Hi All,
I did an update run with autoconf taking it from 2.71 to 2.72
autoconf built without any problems, however collectd then failed for a syntax error in the configure file.
Confirmed that this was due to autoconf by changing the versions back and forward and the problem went away and then came back again.
The collectd build error message is
checking for size_t... yes checking for uid_t... yes checking for gid_t... yes ./configure: line 18710: syntax error near unexpected token `newline' ./configure: line 18710: `yes:' make: *** [collectd:120: /usr/src/log/collectd-4.10.9] Error 2
The section around line 18710 in the configure file is
18707 do : 18708 as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh` 18709 ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default" 18710 if eval test "x$"$as_ac_Header"" = x"yes"; then : 18711 cat >>confdefs.h <<_ACEOF 18712 #define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1 18713 _ACEOF 18714 18715 else 18716 with_libiptc="no (header file missing)" 18717 fi
However there are 15 occurrences of the exact same text as line 18710 in the configure file so I am not convinced if that line is the root cause for the syntax error but some other earlier error that causes a knock-on effect.
However, my knowledge of the coding syntax is definitely not enough to figure out what needs to be fixed/changed.
As collectd is a very old version it is likely that some structural coding or syntax was fine in the past but now with the change from autoconf-2.71 to 2.72 it is no longer allowed, or is flagged up when in the past it was just ignored.
There are quite a few changes in autoconf-2.72 with some being marked as backwards compatibilities. All of them except one say that existing configure scripts will continue working. The one that doesn't mention that is the following change:-
Configure scripts no longer support pre-1989 C compilers. Specifically, compilers that *only* implement the original “K&R” function definition syntax, and not the newer “prototyped” syntax, will not be able to parse the test programs now emitted by AC_CHECK_FUNC, AC_LANG_CALL, and similar macros. AC_PROG_CC still accepts such compilers, but this may change in the near future.
This change was necessary in order to support the upcoming 2024 edition of the C standard (often referred to as “C23”), which will officially remove the function declaration syntax used by AC_CHECK_FUNC in Autoconf 2.71 and earlier. We feel that support for compilers that support only C 2024 is more useful, nowadays, than support for compilers that don’t implement a core feature of C 1989.
However I am unable to figure out from this if the problem I am experiencing is related to this or not. I would not have thought so as I don't believe we are using a pre-1989 C compiler.
Any ideas from anyone on how to fix this issue?
There is nothing critical from a security or other vulnerability aspect in autoconf-2.72 but it would be nice to figure this out before we get to a stage where it has to be made to work.
Regards,
Adolf.
Hello Adolf,
In the build script we are running autoreconf which will regenerate the configure script:
https://git.ipfire.org/?p=ipfire-2.x.git;a=blob;f=lfs/collectd;h=d1d4ea72138...
Is there any output of that command? There should be some warnings which might help us to find out what we need to change.
On 13 Nov 2024, at 10:30, Adolf Belka adolf.belka@ipfire.org wrote:
Hi All,
I did an update run with autoconf taking it from 2.71 to 2.72
autoconf built without any problems, however collectd then failed for a syntax error in the configure file.
Confirmed that this was due to autoconf by changing the versions back and forward and the problem went away and then came back again.
The collectd build error message is
checking for size_t... yes checking for uid_t... yes checking for gid_t... yes ./configure: line 18710: syntax error near unexpected token `newline' ./configure: line 18710: `yes:' make: *** [collectd:120: /usr/src/log/collectd-4.10.9] Error 2
The section around line 18710 in the configure file is
18707 do : 18708 as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh` 18709 ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default" 18710 if eval test "x$"$as_ac_Header"" = x"yes"; then :
There is an extra : here which is probably what causes the syntax error.
18711 cat >>confdefs.h <<_ACEOF 18712 #define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1 18713 _ACEOF 18714 18715 else 18716 with_libiptc="no (header file missing)" 18717 fi
However there are 15 occurrences of the exact same text as line 18710 in the configure file so I am not convinced if that line is the root cause for the syntax error but some other earlier error that causes a knock-on effect.
However, my knowledge of the coding syntax is definitely not enough to figure out what needs to be fixed/changed.
As collectd is a very old version it is likely that some structural coding or syntax was fine in the past but now with the change from autoconf-2.71 to 2.72 it is no longer allowed, or is flagged up when in the past it was just ignored.
There are quite a few changes in autoconf-2.72 with some being marked as backwards compatibilities. All of them except one say that existing configure scripts will continue working. The one that doesn't mention that is the following change:-
Configure scripts no longer support pre-1989 C compilers. Specifically, compilers that *only* implement the original “K&R” function definition syntax, and not the newer “prototyped” syntax, will not be able to parse the test programs now emitted by AC_CHECK_FUNC, AC_LANG_CALL, and similar macros. AC_PROG_CC still accepts such compilers, but this may change in the near future.
This change was necessary in order to support the upcoming 2024 edition of the C standard (often referred to as “C23”), which will officially remove the function declaration syntax used by AC_CHECK_FUNC in Autoconf 2.71 and earlier. We feel that support for compilers that support only C 2024 is more useful, nowadays, than support for compilers that don’t implement a core feature of C 1989.
However I am unable to figure out from this if the problem I am experiencing is related to this or not. I would not have thought so as I don't believe we are using a pre-1989 C compiler.
Any ideas from anyone on how to fix this issue?
There is nothing critical from a security or other vulnerability aspect in autoconf-2.72 but it would be nice to figure this out before we get to a stage where it has to be made to work.
Regards,
Adolf.
Hi Michael,
On 19/11/2024 12:41, Michael Tremer wrote:
Hello Adolf,
In the build script we are running autoreconf which will regenerate the configure script:
https://git.ipfire.org/?p=ipfire-2.x.git;a=blob;f=lfs/collectd;h=d1d4ea72138...
Ah yes, so when I have been looking at the configure script from the source tarball I was more than likely looking at a line number with different code in it than was actually used.
I should probably try and run the collectd patching and autoreconf and after that look at the configure script and see what is at the problem line number.
Is there any output of that command? There should be some warnings which might help us to find out what we need to change.
There is quite a bit and a lot of warnings about variables that are obsolete but i can't tell what might be a problem. Having the correct configure script to look at the actual command at the mentioned line number is probably a good first step.
Here is the log output for the autoupdate, autoreconf and autoreconf in libltdl after all the patches have been applied. Maybe you can see something that doesn't look right. I will try and get the actual configure file that is created and see what is at line 18710 in that file.
cd /usr/src/collectd-4.10.9 && autoupdate -v configure.in autoupdate: running: echo dumpdef | /tools_x86_64/bin/m4 2>/tmp/auCniUF5/m4.defs >/dev/null autom4te: the trace request object is: autom4te: $VAR1 = bless( [ autom4te: '0', autom4te: 0, autom4te: [ autom4te: '/usr/share/autoconf' autom4te: ], autom4te: [ autom4te: '/usr/share/autoconf/m4sugar/m4sugar.m4', autom4te: '/usr/share/autoconf/m4sugar/m4sh.m4', autom4te: '/usr/share/autoconf/autoconf/autoconf.m4', autom4te: 'aclocal.m4', autom4te: '/dev/null' autom4te: ], autom4te: { autom4te: 'AC_CANONICAL_BUILD' => 1, autom4te: 'AC_CANONICAL_HOST' => 1, autom4te: 'AC_CANONICAL_SYSTEM' => 1, autom4te: 'AC_CANONICAL_TARGET' => 1, autom4te: 'AC_CONFIG_AUX_DIR' => 1, autom4te: 'AC_CONFIG_FILES' => 1, autom4te: 'AC_CONFIG_HEADERS' => 1, autom4te: 'AC_CONFIG_LIBOBJ_DIR' => 1, autom4te: 'AC_CONFIG_LINKS' => 1, autom4te: 'AC_CONFIG_MACRO_DIR_TRACE' => 1, autom4te: 'AC_CONFIG_SUBDIRS' => 1, autom4te: 'AC_DEFINE_TRACE_LITERAL' => 1, autom4te: 'AC_FC_FREEFORM' => 1, autom4te: 'AC_FC_PP_DEFINE' => 1, autom4te: 'AC_FC_PP_SRCEXT' => 1, autom4te: 'AC_FC_SRCEXT' => 1, autom4te: 'AC_INIT' => 1, autom4te: 'AC_LIBSOURCE' => 1, autom4te: 'AC_PROG_LIBTOOL' => 1, autom4te: 'AC_REQUIRE_AUX_FILE' => 1, autom4te: 'AC_SUBST' => 1, autom4te: 'AC_SUBST_TRACE' => 1, autom4te: 'AH_OUTPUT' => 1, autom4te: 'AM_AUTOMAKE_VERSION' => 1, autom4te: 'AM_CONDITIONAL' => 1, autom4te: 'AM_ENABLE_MULTILIB' => 1, autom4te: 'AM_EXTRA_RECURSIVE_TARGETS' => 1, autom4te: 'AM_GNU_GETTEXT' => 1, autom4te: 'AM_GNU_GETTEXT_INTL_SUBDIR' => 1, autom4te: 'AM_INIT_AUTOMAKE' => 1, autom4te: 'AM_MAINTAINER_MODE' => 1, autom4te: 'AM_MAKEFILE_INCLUDE' => 1, autom4te: 'AM_NLS' => 1, autom4te: 'AM_PATH_GUILE' => 1, autom4te: 'AM_POT_TOOLS' => 1, autom4te: 'AM_PROG_AR' => 1, autom4te: 'AM_PROG_CC_C_O' => 1, autom4te: 'AM_PROG_CXX_C_O' => 1, autom4te: 'AM_PROG_F77_C_O' => 1, autom4te: 'AM_PROG_FC_C_O' => 1, autom4te: 'AM_PROG_LIBTOOL' => 1, autom4te: 'AM_PROG_MKDIR_P' => 1, autom4te: 'AM_PROG_MOC' => 1, autom4te: 'AM_SILENT_RULES' => 1, autom4te: 'AM_XGETTEXT_OPTION' => 1, autom4te: 'AU_DEFINE' => 1, autom4te: 'GTK_DOC_CHECK' => 1, autom4te: 'IT_PROG_INTLTOOL' => 1, autom4te: 'LT_CONFIG_LTDL_DIR' => 1, autom4te: 'LT_INIT' => 1, autom4te: 'LT_SUPPORTED_TAG' => 1, autom4te: '_AM_COND_ELSE' => 1, autom4te: '_AM_COND_ENDIF' => 1, autom4te: '_AM_COND_IF' => 1, autom4te: '_AM_MAKEFILE_INCLUDE' => 1, autom4te: '_AM_SUBST_NOTMAKE' => 1, autom4te: '_LT_AC_TAGCONFIG' => 1, autom4te: '_m4_warn' => 1, autom4te: 'define' => 1, autom4te: 'include' => 1, autom4te: 'm4_define' => 1, autom4te: 'm4_include' => 1, autom4te: 'm4_pattern_allow' => 1, autom4te: 'm4_pattern_forbid' => 1, autom4te: 'm4_sinclude' => 1, autom4te: 'sinclude' => 1 autom4te: } autom4te: ], 'Autom4te::Request' ); autom4te: running: /tools_x86_64/bin/m4 --nesting-limit=1024 --gnu --include=/usr/share/autoconf --debug=aflq --fatal-warning --debugfile=autom4te.cache/traces.0t --trace=AC_CANONICAL_BUILD --trace=AC_CANONICAL_HOST --trace=AC_CANONICAL_SYSTEM --trace=AC_CANONICAL_TARGET --trace=AC_CONFIG_AUX_DIR --trace=AC_CONFIG_FILES --trace=AC_CONFIG_HEADERS --trace=AC_CONFIG_LIBOBJ_DIR --trace=AC_CONFIG_LINKS --trace=AC_CONFIG_MACRO_DIR_TRACE --trace=AC_CONFIG_SUBDIRS --trace=AC_DEFINE_TRACE_LITERAL --trace=AC_FC_FREEFORM --trace=AC_FC_PP_DEFINE --trace=AC_FC_PP_SRCEXT --trace=AC_FC_SRCEXT --trace=AC_INIT --trace=AC_LIBSOURCE --trace=AC_PROG_LIBTOOL --trace=AC_REQUIRE_AUX_FILE --trace=AC_SUBST --trace=AC_SUBST_TRACE --trace=AH_OUTPUT --trace=AM_AUTOMAKE_VERSION --trace=AM_CONDITIONAL --trace=AM_ENABLE_MULTILIB --trace=AM_EXTRA_RECURSIVE_TARGETS --trace=AM_GNU_GETTEXT --trace=AM_GNU_GETTEXT_INTL_SUBDIR --trace=AM_INIT_AUTOMAKE --trace=AM_MAINTAINER_MODE --trace=AM_MAKEFILE_INCLUDE --trace=AM_NLS --trace=AM_PATH_GUILE --trace=AM_POT_TOOLS --trace=AM_PROG_AR --trace=AM_PROG_CC_C_O --trace=AM_PROG_CXX_C_O --trace=AM_PROG_F77_C_O --trace=AM_PROG_FC_C_O --trace=AM_PROG_LIBTOOL --trace=AM_PROG_MKDIR_P --trace=AM_PROG_MOC --trace=AM_SILENT_RULES --trace=AM_XGETTEXT_OPTION --trace=AU_DEFINE --trace=GTK_DOC_CHECK --trace=IT_PROG_INTLTOOL --trace=LT_CONFIG_LTDL_DIR --trace=LT_INIT --trace=LT_SUPPORTED_TAG --trace=_AM_COND_ELSE --trace=_AM_COND_ENDIF --trace=_AM_COND_IF --trace=_AM_MAKEFILE_INCLUDE --trace=_AM_SUBST_NOTMAKE --trace=_LT_AC_TAGCONFIG --trace=_m4_warn --trace=define --trace=include --trace=m4_define --trace=m4_include --trace=m4_pattern_allow --trace=m4_pattern_forbid --trace=m4_sinclude --trace=sinclude /usr/share/autoconf/m4sugar/m4sugar.m4 /usr/share/autoconf/m4sugar/m4sh.m4 /usr/share/autoconf/autoconf/autoconf.m4 aclocal.m4 /dev/null > autom4te.cache/output.0t aclocal.m4:16: warning: this file was generated for autoconf 2.67. You have another version of autoconf. It may work, but is not guaranteed to. If you have problems, you may need to regenerate the build system entirely. To do so, use the procedure documented by the package, typically `autoreconf'. autom4te: formatting traces for '/tmp/am4t7DDKJt/warnings': _m4_warn autom4te: reading /tmp/am4t7DDKJt/warnings autom4te: formatting traces for '-': AU_DEFINE, define, m4_define autoupdate: running: /usr/bin/autom4te --language=autoconf --verbose --include=/usr/share/autoconf --trace AU_DEFINE:'_au_defun(@<:@$1@:>@, autoupdate: @<:@$2@:>@)' --melt /dev/null >/tmp/auCniUF5/au.m4 autom4te: formatting traces for '/tmp/am4tmsyTME/dependencies': include, m4_include autom4te: up_to_date (autom4te.cache/output.0): up to date autom4te: the trace request object is: autom4te: $VAR1 = bless( [ autom4te: '0', autom4te: 1, autom4te: [ autom4te: '/usr/share/autoconf' autom4te: ], autom4te: [ autom4te: '/usr/share/autoconf/m4sugar/m4sugar.m4', autom4te: '/usr/share/autoconf/m4sugar/m4sh.m4', autom4te: '/usr/share/autoconf/autoconf/autoconf.m4', autom4te: 'aclocal.m4', autom4te: '/dev/null' autom4te: ], autom4te: { autom4te: 'AC_CANONICAL_BUILD' => 1, autom4te: 'AC_CANONICAL_HOST' => 1, autom4te: 'AC_CANONICAL_SYSTEM' => 1, autom4te: 'AC_CANONICAL_TARGET' => 1, autom4te: 'AC_CONFIG_AUX_DIR' => 1, autom4te: 'AC_CONFIG_FILES' => 1, autom4te: 'AC_CONFIG_HEADERS' => 1, autom4te: 'AC_CONFIG_LIBOBJ_DIR' => 1, autom4te: 'AC_CONFIG_LINKS' => 1, autom4te: 'AC_CONFIG_MACRO_DIR_TRACE' => 1, autom4te: 'AC_CONFIG_SUBDIRS' => 1, autom4te: 'AC_DEFINE_TRACE_LITERAL' => 1, autom4te: 'AC_FC_FREEFORM' => 1, autom4te: 'AC_FC_PP_DEFINE' => 1, autom4te: 'AC_FC_PP_SRCEXT' => 1, autom4te: 'AC_FC_SRCEXT' => 1, autom4te: 'AC_INIT' => 1, autom4te: 'AC_LIBSOURCE' => 1, autom4te: 'AC_PROG_LIBTOOL' => 1, autom4te: 'AC_REQUIRE_AUX_FILE' => 1, autom4te: 'AC_SUBST' => 1, autom4te: 'AC_SUBST_TRACE' => 1, autom4te: 'AH_OUTPUT' => 1, autom4te: 'AM_AUTOMAKE_VERSION' => 1, autom4te: 'AM_CONDITIONAL' => 1, autom4te: 'AM_ENABLE_MULTILIB' => 1, autom4te: 'AM_EXTRA_RECURSIVE_TARGETS' => 1, autom4te: 'AM_GNU_GETTEXT' => 1, autom4te: 'AM_GNU_GETTEXT_INTL_SUBDIR' => 1, autom4te: 'AM_INIT_AUTOMAKE' => 1, autom4te: 'AM_MAINTAINER_MODE' => 1, autom4te: 'AM_MAKEFILE_INCLUDE' => 1, autom4te: 'AM_NLS' => 1, autom4te: 'AM_PATH_GUILE' => 1, autom4te: 'AM_POT_TOOLS' => 1, autom4te: 'AM_PROG_AR' => 1, autom4te: 'AM_PROG_CC_C_O' => 1, autom4te: 'AM_PROG_CXX_C_O' => 1, autom4te: 'AM_PROG_F77_C_O' => 1, autom4te: 'AM_PROG_FC_C_O' => 1, autom4te: 'AM_PROG_LIBTOOL' => 1, autom4te: 'AM_PROG_MKDIR_P' => 1, autom4te: 'AM_PROG_MOC' => 1, autom4te: 'AM_SILENT_RULES' => 1, autom4te: 'AM_XGETTEXT_OPTION' => 1, autom4te: 'AU_DEFINE' => 1, autom4te: 'GTK_DOC_CHECK' => 1, autom4te: 'IT_PROG_INTLTOOL' => 1, autom4te: 'LT_CONFIG_LTDL_DIR' => 1, autom4te: 'LT_INIT' => 1, autom4te: 'LT_SUPPORTED_TAG' => 1, autom4te: '_AM_COND_ELSE' => 1, autom4te: '_AM_COND_ENDIF' => 1, autom4te: '_AM_COND_IF' => 1, autom4te: '_AM_MAKEFILE_INCLUDE' => 1, autom4te: '_AM_SUBST_NOTMAKE' => 1, autom4te: '_LT_AC_TAGCONFIG' => 1, autom4te: '_m4_warn' => 1, autom4te: 'define' => 1, autom4te: 'include' => 1, autom4te: 'm4_define' => 1, autom4te: 'm4_include' => 1, autom4te: 'm4_pattern_allow' => 1, autom4te: 'm4_pattern_forbid' => 1, autom4te: 'm4_sinclude' => 1, autom4te: 'sinclude' => 1 autom4te: } autom4te: ], 'Autom4te::Request' ); autom4te: formatting traces for '/tmp/am4tmsyTME/warnings': _m4_warn autom4te: reading /tmp/am4tmsyTME/warnings autom4te: formatting traces for '-': AU_DEFINE autoupdate: running: /tools_x86_64/bin/m4 --include=/tmp/auCniUF5 --include=/usr/share/autoconf /tmp/auCniUF5/input.m4 > /tmp/auCniUF5/updated configure.in:121: warning: The preprocessor macro 'STDC_HEADERS' is obsolete. Except in unusual embedded environments, you can safely include all C89 headers unconditionally. configure.in:500: warning: Update your code to rely only on HAVE_SYS_TIME_H, then remove this warning and the obsolete code below it. All current systems provide time.h; it need not be checked for. Not all systems provide sys/time.h, but those that do, all allow you to include it and time.h simultaneously. configure.in:505: warning: AC_PROG_GCC_TRADITIONAL is obsolete; use AC_PROG_CC
autoupdate: 'configure.in' is updated cd /usr/src/collectd-4.10.9 && autoreconf -vfi autoreconf: export WARNINGS= autoreconf: warning: autoconf input should be named 'configure.ac', not 'configure.in' autoreconf: Entering directory '.' autoreconf: configure.in: not using Gettext autoreconf: running: aclocal --force -I libltdl/m4 aclocal: warning: autoconf input should be named 'configure.ac', not 'configure.in' autoreconf: configure.in: tracing autoreconf: configure.in: adding subdirectory libltdl to autoreconf autoreconf: Entering directory 'libltdl' autoreconf: configure.ac: not using Gettext autoreconf: running: aclocal --force -I m4 autoreconf: configure.ac: tracing autoreconf: running: libtoolize --copy --force --ltdl libtoolize: putting auxiliary files in AC_CONFIG_AUX_DIR, 'config'. libtoolize: copying file 'config/compile' libtoolize: copying file 'config/config.guess' libtoolize: copying file 'config/config.sub' libtoolize: copying file 'config/depcomp' libtoolize: copying file 'config/install-sh' libtoolize: copying file 'config/missing' libtoolize: copying file 'config/ltmain.sh' libtoolize: putting macros in AC_CONFIG_MACRO_DIRS, 'm4'. libtoolize: copying file 'm4/libtool.m4' libtoolize: copying file 'm4/ltargz.m4' libtoolize: You should add the contents of 'm4/ltargz.m4' to 'aclocal.m4'. libtoolize: copying file 'm4/ltdl.m4' libtoolize: copying file 'm4/ltoptions.m4' libtoolize: copying file 'm4/ltsugar.m4' libtoolize: copying file 'm4/ltversion.m4' libtoolize: copying file 'm4/lt~obsolete.m4' libtoolize: putting libltdl files in LT_CONFIG_LTDL_DIR, '.'. libtoolize: copying file './COPYING.LIB' libtoolize: creating file './Makefile.am' libtoolize: copying file './README' libtoolize: creating file './configure.ac' libtoolize: creating file './aclocal.m4' libtoolize: creating file './Makefile.in' libtoolize: copying file './config-h.in' libtoolize: creating file './configure' libtoolize: copying file './libltdl/lt__alloc.h' libtoolize: copying file './libltdl/lt__argz_.h' libtoolize: copying file './libltdl/lt__dirent.h' libtoolize: copying file './libltdl/lt__glibc.h' libtoolize: copying file './libltdl/lt__private.h' libtoolize: copying file './libltdl/lt__strl.h' libtoolize: copying file './libltdl/lt_dlloader.h' libtoolize: copying file './libltdl/lt_error.h' libtoolize: copying file './libltdl/lt_system.h' libtoolize: copying file './libltdl/slist.h' libtoolize: copying file './loaders/dld_link.c' libtoolize: copying file './loaders/dlopen.c' libtoolize: copying file './loaders/dyld.c' libtoolize: copying file './loaders/load_add_on.c' libtoolize: copying file './loaders/loadlibrary.c' libtoolize: copying file './loaders/preopen.c' libtoolize: copying file './loaders/shl_load.c' libtoolize: copying file './lt__alloc.c' libtoolize: copying file './lt__argz.c' libtoolize: copying file './lt__dirent.c' libtoolize: copying file './lt__strl.c' libtoolize: copying file './lt_dlloader.c' libtoolize: copying file './lt_error.c' libtoolize: copying file './ltdl.c' libtoolize: copying file './ltdl.h' libtoolize: copying file './slist.c' libtoolize: Remember to add 'LTDL_INIT' to configure.ac. autoreconf: configure.ac: not using Intltool autoreconf: configure.ac: not using Gtkdoc autoreconf: running: aclocal --force -I m4 autoreconf: running: /usr/bin/autoconf --force autoreconf: running: /usr/bin/autoheader --force autoreconf: running: automake --add-missing --copy --force-missing autoreconf: Leaving directory 'libltdl' autoreconf: running: libtoolize --copy --force --ltdl --ltdl libtoolize: putting auxiliary files in AC_CONFIG_AUX_DIR, 'libltdl/config'. libtoolize: copying file 'libltdl/config/compile' libtoolize: copying file 'libltdl/config/config.guess' libtoolize: copying file 'libltdl/config/config.sub' libtoolize: copying file 'libltdl/config/depcomp' libtoolize: copying file 'libltdl/config/install-sh' libtoolize: copying file 'libltdl/config/missing' libtoolize: copying file 'libltdl/config/ltmain.sh' libtoolize: putting macros in 'libltdl/m4'. libtoolize: copying file 'libltdl/m4/libtool.m4' libtoolize: copying file 'libltdl/m4/ltargz.m4' libtoolize: You should add the contents of 'libltdl/m4/ltargz.m4' to 'aclocal.m4'. libtoolize: copying file 'libltdl/m4/ltdl.m4' libtoolize: copying file 'libltdl/m4/ltoptions.m4' libtoolize: copying file 'libltdl/m4/ltsugar.m4' libtoolize: copying file 'libltdl/m4/ltversion.m4' libtoolize: copying file 'libltdl/m4/lt~obsolete.m4' libtoolize: putting libltdl files in 'libltdl'. libtoolize: copying file 'libltdl/COPYING.LIB' libtoolize: creating file 'libltdl/Makefile.am' libtoolize: copying file 'libltdl/README' libtoolize: creating file 'libltdl/configure.ac' libtoolize: creating file 'libltdl/aclocal.m4' libtoolize: creating file 'libltdl/Makefile.in' libtoolize: copying file 'libltdl/config-h.in' libtoolize: creating file 'libltdl/configure' libtoolize: copying file 'libltdl/libltdl/lt__alloc.h' libtoolize: copying file 'libltdl/libltdl/lt__argz_.h' libtoolize: copying file 'libltdl/libltdl/lt__dirent.h' libtoolize: copying file 'libltdl/libltdl/lt__glibc.h' libtoolize: copying file 'libltdl/libltdl/lt__private.h' libtoolize: copying file 'libltdl/libltdl/lt__strl.h' libtoolize: copying file 'libltdl/libltdl/lt_dlloader.h' libtoolize: copying file 'libltdl/libltdl/lt_error.h' libtoolize: copying file 'libltdl/libltdl/lt_system.h' libtoolize: copying file 'libltdl/libltdl/slist.h' libtoolize: copying file 'libltdl/loaders/dld_link.c' libtoolize: copying file 'libltdl/loaders/dlopen.c' libtoolize: copying file 'libltdl/loaders/dyld.c' libtoolize: copying file 'libltdl/loaders/load_add_on.c' libtoolize: copying file 'libltdl/loaders/loadlibrary.c' libtoolize: copying file 'libltdl/loaders/preopen.c' libtoolize: copying file 'libltdl/loaders/shl_load.c' libtoolize: copying file 'libltdl/lt__alloc.c' libtoolize: copying file 'libltdl/lt__argz.c' libtoolize: copying file 'libltdl/lt__dirent.c' libtoolize: copying file 'libltdl/lt__strl.c' libtoolize: copying file 'libltdl/lt_dlloader.c' libtoolize: copying file 'libltdl/lt_error.c' libtoolize: copying file 'libltdl/ltdl.c' libtoolize: copying file 'libltdl/ltdl.h' libtoolize: copying file 'libltdl/slist.c' libtoolize: Remember to add 'LTDL_INIT' to configure.in. libtoolize: Remember to add 'LT_CONFIG_LTDL_DIR([libltdl])' to 'configure.in'. libtoolize: Consider adding 'AC_CONFIG_MACRO_DIRS([libltdl/m4])' to configure.in, libtoolize: and rerunning libtoolize and aclocal. autoreconf: configure.in: not using Intltool autoreconf: configure.in: not using Gtkdoc autoreconf: running: aclocal --force -I libltdl/m4 aclocal: warning: autoconf input should be named 'configure.ac', not 'configure.in' autoreconf: running: /usr/bin/autoconf --force configure.in:51: warning: AC_PROG_LEX without either yywrap or noyywrap is obsolete ./lib/autoconf/programs.m4:743: _AC_PROG_LEX is expanded from... ./lib/autoconf/programs.m4:736: AC_PROG_LEX is expanded from... configure.in:51: the top level configure.in:125: warning: The preprocessor macro 'STDC_HEADERS' is obsolete. configure.in:125: Except in unusual embedded environments, you can safely include all configure.in:125: C89 headers unconditionally. configure.in:512: warning: Update your code to rely only on HAVE_SYS_TIME_H, configure.in:512: then remove this warning and the obsolete code below it. configure.in:512: All current systems provide time.h; it need not be checked for. configure.in:512: Not all systems provide sys/time.h, but those that do, all allow configure.in:512: you to include it and time.h simultaneously. configure.in:530: warning: AC_PROG_GCC_TRADITIONAL is obsolete; use AC_PROG_CC configure.in:533: warning: ac_ext=c configure.in:533: ac_cpp='$CPP $CPPFLAGS' configure.in:533: ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5' configure.in:533: ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5' configure.in:533: ac_compiler_gnu=$ac_cv_c_compiler_gnu configure.in:533: if test -n "$ac_tool_prefix"; then configure.in:533: # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args. configure.in:533: set dummy ${ac_tool_prefix}gcc; ac_word=$2 configure.in:533: { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 configure.in:533: printf %s "checking for $ac_word... " >&6; } configure.in:533: if test ${ac_cv_prog_CC+y} configure.in:533: then : configure.in:533: printf %s "(cached) " >&6 configure.in:533: else case e in #( configure.in:533: e) if test -n "$CC"; then configure.in:533: ac_cv_prog_CC="$CC" # Let the user override the test. configure.in:533: else configure.in:533: as_save_IFS=$IFS; IFS=$PATH_SEPARATOR configure.in:533: for as_dir in $PATH configure.in:533: do configure.in:533: IFS=$as_save_IFS configure.in:533: case $as_dir in #((( configure.in:533: '') as_dir=./ ;; configure.in:533: */) ;; configure.in:533: *) as_dir=$as_dir/ ;; configure.in:533: esac configure.in:533: for ac_exec_ext in '' $ac_executable_extensions; do configure.in:533: if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then configure.in:533: ac_cv_prog_CC="${ac_tool_prefix}gcc" configure.in:533: printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 configure.in:533: break 2 configure.in:533: fi configure.in:533: done configure.in:533: done configure.in:533: IFS=$as_save_IFS configure.in:533: configure.in:533: fi ;; configure.in:533: esac configure.in:533: fi configure.in:533: CC=$ac_cv_prog_CC configure.in:533: if test -n "$CC"; then configure.in:533: { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5 configure.in:533: printf "%s\n" "$CC" >&6; } configure.in:533: else configure.in:533: { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 configure.in:533: printf "%s\n" "no" >&6; } configure.in:533: fi configure.in:533: configure.in:533: configure.in:533: fi configure.in:533: if test -z "$ac_cv_prog_CC"; then configure.in:533: ac_ct_CC=$CC configure.in:533: # Extract the first word of "gcc", so it can be a program name with args. configure.in:533: set dummy gcc; ac_word=$2 configure.in:533: { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5 configure.in:533: printf %s "checking for $ac_word... " >&6; } configure.in:533: if test ${ac_cv_prog_ac_ct_CC+y} configure.in:533: then : configure.in:533: printf %s "(cached) " >&6 configure.in:533: else case e in #( configure.in:533: e) if test -n "$ac_ct_CC"; then configure.in:533: ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test. configure.in:533: else configure.in:533: as_save_IFS=$IFS; IFS=$PATH_SEPARATOR configure.in:533: for as_dir in $PATH configure.in:533: do configure.in:533: IFS=$as_save_IFS configure.in:533: case $as_dir in #((( configure.in:533: '') as_dir=./ ;; configure.in:533: */) ;; configure.in:533: *) as_dir=$as_dir/ ;; configure.in:533: esac configure.in:533: for ac_exec_ext in '' $ac_executable_extensions; do configure.in:533: if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then configure.in:533: ac_cv_prog_ac_ct_CC="gcc" configure.in:533: printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5 configure.in:533: break 2 configure.in:533: fi configure.in:533: done configure.in:533: done configure.in:533: IFS=$as_save_IFS configure.in:533: configure.in:533: fi ;; configure.in:533: esac configure.in:533: fi configure.in:533: ac_ct_CC=$ac_cv_prog_ac_ct_CC configure.in:533: if test -n "$ac_ct_CC"; then configure.in:533: { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5 configure.in:533: printf "%s\n" "$ac_ct_CC" >&6; } configure.in:533: else configure.in:533: { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5 configure.in:533: printf "%s\n" "no" >&6; } configure.in:533: fi configure.in:533: configure.in:533: if test "x$ac_ct_CC" = x; then configure.in:533: CC="" configure.in:533: else configure.in:533: case $cross_compiling:$ac_tool_warned in configure.in:533: yes: is m4_require'd but not m4_defun'd ./lib/autoconf/programs.m4:189: _AC_TOOL_WARN is expanded from... ./lib/autoconf/programs.m4:221: AC_CHECK_TOOL is expanded from... ./lib/autoconf/c.m4:460: AC_PROG_CC is expanded from... configure.in:533: the top level autoreconf: running: /usr/bin/autoheader --force autoheader: warning: autoconf input should be named 'configure.ac', not 'configure.in' autoreconf: running: automake --add-missing --copy --force-missing automake: warning: autoconf input should be named 'configure.ac', not 'configure.in' Makefile.am:5: warning: 'INCLUDES' is the old name for 'AM_CPPFLAGS' (or '*_CPPFLAGS') automake: warning: autoconf input should be named 'configure.ac', not 'configure.in' autoreconf: Leaving directory '.' cd /usr/src/collectd-4.10.9/libltdl && autoreconf -vfi autoreconf: export WARNINGS= autoreconf: Entering directory '.' autoreconf: configure.ac: not using Gettext autoreconf: running: aclocal --force -I m4 autoreconf: configure.ac: tracing autoreconf: running: libtoolize --copy --force --ltdl libtoolize: putting auxiliary files in AC_CONFIG_AUX_DIR, 'config'. libtoolize: copying file 'config/compile' libtoolize: copying file 'config/config.guess' libtoolize: copying file 'config/config.sub' libtoolize: copying file 'config/depcomp' libtoolize: copying file 'config/install-sh' libtoolize: copying file 'config/missing' libtoolize: copying file 'config/ltmain.sh' libtoolize: putting macros in 'm4'. libtoolize: copying file 'm4/libtool.m4' libtoolize: copying file 'm4/ltargz.m4' libtoolize: copying file 'm4/ltdl.m4' libtoolize: copying file 'm4/ltoptions.m4' libtoolize: copying file 'm4/ltsugar.m4' libtoolize: copying file 'm4/ltversion.m4' libtoolize: copying file 'm4/lt~obsolete.m4' libtoolize: putting libltdl files in LT_CONFIG_LTDL_DIR, '.'. libtoolize: copying file './COPYING.LIB' libtoolize: creating file './Makefile.am' libtoolize: copying file './README' libtoolize: creating file './configure.ac' libtoolize: creating file './aclocal.m4' libtoolize: creating file './Makefile.in' libtoolize: copying file './config-h.in' libtoolize: creating file './configure' libtoolize: copying file './libltdl/lt__alloc.h' libtoolize: copying file './libltdl/lt__argz_.h' libtoolize: copying file './libltdl/lt__dirent.h' libtoolize: copying file './libltdl/lt__glibc.h' libtoolize: copying file './libltdl/lt__private.h' libtoolize: copying file './libltdl/lt__strl.h' libtoolize: copying file './libltdl/lt_dlloader.h' libtoolize: copying file './libltdl/lt_error.h' libtoolize: copying file './libltdl/lt_system.h' libtoolize: copying file './libltdl/slist.h' libtoolize: copying file './loaders/dld_link.c' libtoolize: copying file './loaders/dlopen.c' libtoolize: copying file './loaders/dyld.c' libtoolize: copying file './loaders/load_add_on.c' libtoolize: copying file './loaders/loadlibrary.c' libtoolize: copying file './loaders/preopen.c' libtoolize: copying file './loaders/shl_load.c' libtoolize: copying file './lt__alloc.c' libtoolize: copying file './lt__argz.c' libtoolize: copying file './lt__dirent.c' libtoolize: copying file './lt__strl.c' libtoolize: copying file './lt_dlloader.c' libtoolize: copying file './lt_error.c' libtoolize: copying file './ltdl.c' libtoolize: copying file './ltdl.h' libtoolize: copying file './slist.c' libtoolize: Remember to add 'LTDL_INIT' to configure.ac. libtoolize: Consider adding 'AC_CONFIG_MACRO_DIRS([m4])' to configure.ac, libtoolize: and rerunning libtoolize and aclocal. autoreconf: configure.ac: not using Intltool autoreconf: configure.ac: not using Gtkdoc autoreconf: running: aclocal --force -I m4 autoreconf: running: /usr/bin/autoconf --force autoreconf: running: /usr/bin/autoheader --force autoreconf: running: automake --add-missing --copy --force-missing autoreconf: Leaving directory '.'
Regards, Adolf.
On 13 Nov 2024, at 10:30, Adolf Belka adolf.belka@ipfire.org wrote:
Hi All,
I did an update run with autoconf taking it from 2.71 to 2.72
autoconf built without any problems, however collectd then failed for a syntax error in the configure file.
Confirmed that this was due to autoconf by changing the versions back and forward and the problem went away and then came back again.
The collectd build error message is
checking for size_t... yes checking for uid_t... yes checking for gid_t... yes ./configure: line 18710: syntax error near unexpected token `newline' ./configure: line 18710: `yes:' make: *** [collectd:120: /usr/src/log/collectd-4.10.9] Error 2
The section around line 18710 in the configure file is
18707 do : 18708 as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh` 18709 ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default" 18710 if eval test "x$"$as_ac_Header"" = x"yes"; then :
There is an extra : here which is probably what causes the syntax error.
18711 cat >>confdefs.h <<_ACEOF 18712 #define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1 18713 _ACEOF 18714 18715 else 18716 with_libiptc="no (header file missing)" 18717 fi
However there are 15 occurrences of the exact same text as line 18710 in the configure file so I am not convinced if that line is the root cause for the syntax error but some other earlier error that causes a knock-on effect.
However, my knowledge of the coding syntax is definitely not enough to figure out what needs to be fixed/changed.
As collectd is a very old version it is likely that some structural coding or syntax was fine in the past but now with the change from autoconf-2.71 to 2.72 it is no longer allowed, or is flagged up when in the past it was just ignored.
There are quite a few changes in autoconf-2.72 with some being marked as backwards compatibilities. All of them except one say that existing configure scripts will continue working. The one that doesn't mention that is the following change:-
Configure scripts no longer support pre-1989 C compilers. Specifically, compilers that *only* implement the original “K&R” function definition syntax, and not the newer “prototyped” syntax, will not be able to parse the test programs now emitted by AC_CHECK_FUNC, AC_LANG_CALL, and similar macros. AC_PROG_CC still accepts such compilers, but this may change in the near future.
This change was necessary in order to support the upcoming 2024 edition of the C standard (often referred to as “C23”), which will officially remove the function declaration syntax used by AC_CHECK_FUNC in Autoconf 2.71 and earlier. We feel that support for compilers that support only C 2024 is more useful, nowadays, than support for compilers that don’t implement a core feature of C 1989.
However I am unable to figure out from this if the problem I am experiencing is related to this or not. I would not have thought so as I don't believe we are using a pre-1989 C compiler.
Any ideas from anyone on how to fix this issue?
There is nothing critical from a security or other vulnerability aspect in autoconf-2.72 but it would be nice to figure this out before we get to a stage where it has to be made to work.
Regards,
Adolf.
Hi Michael,
I obtained the configure created by the autoreconf etc and I have found the error. Here is the affected line 18710
18706 if test "x$ac_ct_CC" = x; then 18707 CC="" 18708 else 18709 case $cross_compiling:$ac_tool_warned in 18710 yes: 18711 18712 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 18713 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} 18714 ac_tool_warned=yes ;; 18715 esac 18716 CC=$ac_ct_CC 18717 fi 18718 else 18719 CC="$ac_cv_prog_CC" 18720 fi
That line should be yes:) so it is missing a right bracket. Not sure if you can figure where and why that is occurring but presumably a patch can be written to be applied after the autoreconf etc and before the ./configure command
Regards, Adolf.
On 19/11/2024 12:41, Michael Tremer wrote:
Hello Adolf,
In the build script we are running autoreconf which will regenerate the configure script:
https://git.ipfire.org/?p=ipfire-2.x.git;a=blob;f=lfs/collectd;h=d1d4ea72138...
Is there any output of that command? There should be some warnings which might help us to find out what we need to change.
On 13 Nov 2024, at 10:30, Adolf Belka adolf.belka@ipfire.org wrote:
Hi All,
I did an update run with autoconf taking it from 2.71 to 2.72
autoconf built without any problems, however collectd then failed for a syntax error in the configure file.
Confirmed that this was due to autoconf by changing the versions back and forward and the problem went away and then came back again.
The collectd build error message is
checking for size_t... yes checking for uid_t... yes checking for gid_t... yes ./configure: line 18710: syntax error near unexpected token `newline' ./configure: line 18710: `yes:' make: *** [collectd:120: /usr/src/log/collectd-4.10.9] Error 2
The section around line 18710 in the configure file is
18707 do : 18708 as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh` 18709 ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default" 18710 if eval test "x$"$as_ac_Header"" = x"yes"; then :
There is an extra : here which is probably what causes the syntax error.
18711 cat >>confdefs.h <<_ACEOF 18712 #define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1 18713 _ACEOF 18714 18715 else 18716 with_libiptc="no (header file missing)" 18717 fi
However there are 15 occurrences of the exact same text as line 18710 in the configure file so I am not convinced if that line is the root cause for the syntax error but some other earlier error that causes a knock-on effect.
However, my knowledge of the coding syntax is definitely not enough to figure out what needs to be fixed/changed.
As collectd is a very old version it is likely that some structural coding or syntax was fine in the past but now with the change from autoconf-2.71 to 2.72 it is no longer allowed, or is flagged up when in the past it was just ignored.
There are quite a few changes in autoconf-2.72 with some being marked as backwards compatibilities. All of them except one say that existing configure scripts will continue working. The one that doesn't mention that is the following change:-
Configure scripts no longer support pre-1989 C compilers. Specifically, compilers that *only* implement the original “K&R” function definition syntax, and not the newer “prototyped” syntax, will not be able to parse the test programs now emitted by AC_CHECK_FUNC, AC_LANG_CALL, and similar macros. AC_PROG_CC still accepts such compilers, but this may change in the near future.
This change was necessary in order to support the upcoming 2024 edition of the C standard (often referred to as “C23”), which will officially remove the function declaration syntax used by AC_CHECK_FUNC in Autoconf 2.71 and earlier. We feel that support for compilers that support only C 2024 is more useful, nowadays, than support for compilers that don’t implement a core feature of C 1989.
However I am unable to figure out from this if the problem I am experiencing is related to this or not. I would not have thought so as I don't believe we are using a pre-1989 C compiler.
Any ideas from anyone on how to fix this issue?
There is nothing critical from a security or other vulnerability aspect in autoconf-2.72 but it would be nice to figure this out before we get to a stage where it has to be made to work.
Regards,
Adolf.
Hi Michael,
Also reran the collectd autoreconf with the autoconf-2.71 and in that case the line has yes:) so something about the autoconf-2.72 is causing that one yes: in the configure file to be missing the ) . There are something like 20 of those yes: entries and with the autoconf-2.72 only the one I show below is the one with a missing ), all the rest have a yes:) entry.
Regards,
Adolf.
On 19/11/2024 14:43, Adolf Belka wrote:
Hi Michael,
I obtained the configure created by the autoreconf etc and I have found the error. Here is the affected line 18710
18706 if test "x$ac_ct_CC" = x; then 18707 CC="" 18708 else 18709 case $cross_compiling:$ac_tool_warned in 18710 yes: 18711 18712 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 18713 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} 18714 ac_tool_warned=yes ;; 18715 esac 18716 CC=$ac_ct_CC 18717 fi 18718 else 18719 CC="$ac_cv_prog_CC" 18720 fi
That line should be yes:) so it is missing a right bracket. Not sure if you can figure where and why that is occurring but presumably a patch can be written to be applied after the autoreconf etc and before the ./configure command
Regards, Adolf.
On 19/11/2024 12:41, Michael Tremer wrote:
Hello Adolf,
In the build script we are running autoreconf which will regenerate the configure script:
https://git.ipfire.org/?p=ipfire-2.x.git;a=blob;f=lfs/collectd;h=d1d4ea72138...
Is there any output of that command? There should be some warnings which might help us to find out what we need to change.
On 13 Nov 2024, at 10:30, Adolf Belka adolf.belka@ipfire.org wrote:
Hi All,
I did an update run with autoconf taking it from 2.71 to 2.72
autoconf built without any problems, however collectd then failed for a syntax error in the configure file.
Confirmed that this was due to autoconf by changing the versions back and forward and the problem went away and then came back again.
The collectd build error message is
checking for size_t... yes checking for uid_t... yes checking for gid_t... yes ./configure: line 18710: syntax error near unexpected token `newline' ./configure: line 18710: `yes:' make: *** [collectd:120: /usr/src/log/collectd-4.10.9] Error 2
The section around line 18710 in the configure file is
18707 do : 18708 as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh` 18709 ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default" 18710 if eval test "x$"$as_ac_Header"" = x"yes"; then :
There is an extra : here which is probably what causes the syntax error.
18711 cat >>confdefs.h <<_ACEOF 18712 #define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1 18713 _ACEOF 18714 18715 else 18716 with_libiptc="no (header file missing)" 18717 fi
However there are 15 occurrences of the exact same text as line 18710 in the configure file so I am not convinced if that line is the root cause for the syntax error but some other earlier error that causes a knock-on effect.
However, my knowledge of the coding syntax is definitely not enough to figure out what needs to be fixed/changed.
As collectd is a very old version it is likely that some structural coding or syntax was fine in the past but now with the change from autoconf-2.71 to 2.72 it is no longer allowed, or is flagged up when in the past it was just ignored.
There are quite a few changes in autoconf-2.72 with some being marked as backwards compatibilities. All of them except one say that existing configure scripts will continue working. The one that doesn't mention that is the following change:-
Configure scripts no longer support pre-1989 C compilers. Specifically, compilers that *only* implement the original “K&R” function definition syntax, and not the newer “prototyped” syntax, will not be able to parse the test programs now emitted by AC_CHECK_FUNC, AC_LANG_CALL, and similar macros. AC_PROG_CC still accepts such compilers, but this may change in the near future.
This change was necessary in order to support the upcoming 2024 edition of the C standard (often referred to as “C23”), which will officially remove the function declaration syntax used by AC_CHECK_FUNC in Autoconf 2.71 and earlier. We feel that support for compilers that support only C 2024 is more useful, nowadays, than support for compilers that don’t implement a core feature of C 1989.
However I am unable to figure out from this if the problem I am experiencing is related to this or not. I would not have thought so as I don't believe we are using a pre-1989 C compiler.
Any ideas from anyone on how to fix this issue?
There is nothing critical from a security or other vulnerability aspect in autoconf-2.72 but it would be nice to figure this out before we get to a stage where it has to be made to work.
Regards,
Adolf.
Let’s maybe try to avoid running autoconf altogether.
There might be a small chance because only two patches change configure.ac. There are others that change Makefile.in, so this might not work at all. Let’s see…
Could you please remove the patches in src/patches/collectd with number 12 and 13? Then remove the autoreconf commands from lfs/collectd.
Things should hopefully still apply and after the first run of configure, make should not try to run autoconf again. Not sure but worth a try.
I can’t remember what has stopped us from moving with upstream apart from the RRD file format. If this all doesn’t work, maybe we should look at this all again and see if we can’t migrate to the latest upstream version again.
Best, -Michael
On 19 Nov 2024, at 13:55, Adolf Belka adolf.belka@ipfire.org wrote: Hi Michael,
Also reran the collectd autoreconf with the autoconf-2.71 and in that case the line has yes:) so something about the autoconf-2.72 is causing that one yes: in the configure file to be missing the ) . There are something like 20 of those yes: entries and with the autoconf-2.72 only the one I show below is the one with a missing ), all the rest have a yes:) entry.
Regards,
Adolf.
On 19/11/2024 14:43, Adolf Belka wrote: Hi Michael,
I obtained the configure created by the autoreconf etc and I have found the error. Here is the affected line 18710
18706 if test "x$ac_ct_CC" = x; then 18707 CC="" 18708 else 18709 case $cross_compiling:$ac_tool_warned in 18710 yes: 18711 18712 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 18713 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} 18714 ac_tool_warned=yes ;; 18715 esac 18716 CC=$ac_ct_CC 18717 fi 18718 else 18719 CC="$ac_cv_prog_CC" 18720 fi
That line should be yes:) so it is missing a right bracket. Not sure if you can figure where and why that is occurring but presumably a patch can be written to be applied after the autoreconf etc and before the ./configure command
Regards, Adolf.
On 19/11/2024 12:41, Michael Tremer wrote: Hello Adolf, In the build script we are running autoreconf which will regenerate the configure script: https://git.ipfire.org/?p=ipfire-2.x.git;a=blob;f=lfs/collectd;h=d1d4ea72138... Is there any output of that command? There should be some warnings which might help us to find out what we need to change.
On 13 Nov 2024, at 10:30, Adolf Belka adolf.belka@ipfire.org wrote: Hi All, I did an update run with autoconf taking it from 2.71 to 2.72 autoconf built without any problems, however collectd then failed for a syntax error in the configure file. Confirmed that this was due to autoconf by changing the versions back and forward and the problem went away and then came back again. The collectd build error message is checking for size_t... yes checking for uid_t... yes checking for gid_t... yes ./configure: line 18710: syntax error near unexpected token `newline' ./configure: line 18710: `yes:' make: *** [collectd:120: /usr/src/log/collectd-4.10.9] Error 2 The section around line 18710 in the configure file is 18707 do : 18708 as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh` 18709 ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default" 18710 if eval test "x$"$as_ac_Header"" = x"yes"; then :
There is an extra : here which is probably what causes the syntax error.
18711 cat >>confdefs.h <<_ACEOF 18712 #define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1 18713 _ACEOF 18714 18715 else 18716 with_libiptc="no (header file missing)" 18717 fi However there are 15 occurrences of the exact same text as line 18710 in the configure file so I am not convinced if that line is the root cause for the syntax error but some other earlier error that causes a knock-on effect. However, my knowledge of the coding syntax is definitely not enough to figure out what needs to be fixed/changed. As collectd is a very old version it is likely that some structural coding or syntax was fine in the past but now with the change from autoconf-2.71 to 2.72 it is no longer allowed, or is flagged up when in the past it was just ignored. There are quite a few changes in autoconf-2.72 with some being marked as backwards compatibilities. All of them except one say that existing configure scripts will continue working. The one that doesn't mention that is the following change:- Configure scripts no longer support pre-1989 C compilers. Specifically, compilers that *only* implement the original “K&R” function definition syntax, and not the newer “prototyped” syntax, will not be able to parse the test programs now emitted by AC_CHECK_FUNC, AC_LANG_CALL, and similar macros. AC_PROG_CC still accepts such compilers, but this may change in the near future. This change was necessary in order to support the upcoming 2024 edition of the C standard (often referred to as “C23”), which will officially remove the function declaration syntax used by AC_CHECK_FUNC in Autoconf 2.71 and earlier. We feel that support for compilers that support only C 2024 is more useful, nowadays, than support for compilers that don’t implement a core feature of C 1989. However I am unable to figure out from this if the problem I am experiencing is related to this or not. I would not have thought so as I don't believe we are using a pre-1989 C compiler. Any ideas from anyone on how to fix this issue? There is nothing critical from a security or other vulnerability aspect in autoconf-2.72 but it would be nice to figure this out before we get to a stage where it has to be made to work. Regards, Adolf.
Hi Michael,
On 20/11/2024 19:25, Michael Tremer wrote:
Let’s maybe try to avoid running autoconf altogether.
There might be a small chance because only two patches change configure.ac. There are others that change Makefile.in, so this might not work at all. Let’s see…
Could you please remove the patches in src/patches/collectd with number 12 and 13? Then remove the autoreconf commands from lfs/collectd.
Things should hopefully still apply and after the first run of configure, make should not try to run autoconf again. Not sure but worth a try.
I removed the two patches and also removed the two autoreconf commands, leaving the autoupdate command in place.
Unfortunately it failed to build and had the following error message
aclocal.m4:16: warning: this file was generated for autoconf 2.67. You have another version of autoconf. It may work, but is not guaranteed to. If you have problems, you may need to regenerate the build system entirely. To do so, use the procedure documented by the package, typically `autoreconf'. configure.in:533: error: AC_PROG_CC cannot be called after AM_PROG_CC_C_O configure.in:533: the top level autom4te: error: /tools_x86_64/bin/m4 failed with exit status: 1 make[1]: *** [Makefile:375: configure] Error 1 make[1]: Leaving directory '/usr/src/collectd-4.10.9' make: *** [collectd:117: /usr/src/log/collectd-4.10.9] Error 2
I can’t remember what has stopped us from moving with upstream apart from the RRD file format. If this all doesn’t work, maybe we should look at this all again and see if we can’t migrate to the latest upstream version again.
As far as I can remember it was mentioned that the issue was the changed format and RRD being used in so many places making the update require changes in so many places in IPFire-2.x
Regards,
Adolf.
Best, -Michael
On 19 Nov 2024, at 13:55, Adolf Belka adolf.belka@ipfire.org wrote: Hi Michael,
Also reran the collectd autoreconf with the autoconf-2.71 and in that case the line has yes:) so something about the autoconf-2.72 is causing that one yes: in the configure file to be missing the ) . There are something like 20 of those yes: entries and with the autoconf-2.72 only the one I show below is the one with a missing ), all the rest have a yes:) entry.
Regards,
Adolf.
On 19/11/2024 14:43, Adolf Belka wrote: Hi Michael,
I obtained the configure created by the autoreconf etc and I have found the error. Here is the affected line 18710
18706 if test "x$ac_ct_CC" = x; then 18707 CC="" 18708 else 18709 case $cross_compiling:$ac_tool_warned in 18710 yes: 18711 18712 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 18713 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} 18714 ac_tool_warned=yes ;; 18715 esac 18716 CC=$ac_ct_CC 18717 fi 18718 else 18719 CC="$ac_cv_prog_CC" 18720 fi
That line should be yes:) so it is missing a right bracket. Not sure if you can figure where and why that is occurring but presumably a patch can be written to be applied after the autoreconf etc and before the ./configure command
Regards, Adolf.
On 19/11/2024 12:41, Michael Tremer wrote: Hello Adolf, In the build script we are running autoreconf which will regenerate the configure script: https://git.ipfire.org/?p=ipfire-2.x.git;a=blob;f=lfs/collectd;h=d1d4ea72138... Is there any output of that command? There should be some warnings which might help us to find out what we need to change.
On 13 Nov 2024, at 10:30, Adolf Belka adolf.belka@ipfire.org wrote: Hi All, I did an update run with autoconf taking it from 2.71 to 2.72 autoconf built without any problems, however collectd then failed for a syntax error in the configure file. Confirmed that this was due to autoconf by changing the versions back and forward and the problem went away and then came back again. The collectd build error message is checking for size_t... yes checking for uid_t... yes checking for gid_t... yes ./configure: line 18710: syntax error near unexpected token `newline' ./configure: line 18710: `yes:' make: *** [collectd:120: /usr/src/log/collectd-4.10.9] Error 2 The section around line 18710 in the configure file is 18707 do : 18708 as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh` 18709 ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default" 18710 if eval test "x$"$as_ac_Header"" = x"yes"; then :
There is an extra : here which is probably what causes the syntax error.
18711 cat >>confdefs.h <<_ACEOF 18712 #define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1 18713 _ACEOF 18714 18715 else 18716 with_libiptc="no (header file missing)" 18717 fi However there are 15 occurrences of the exact same text as line 18710 in the configure file so I am not convinced if that line is the root cause for the syntax error but some other earlier error that causes a knock-on effect. However, my knowledge of the coding syntax is definitely not enough to figure out what needs to be fixed/changed. As collectd is a very old version it is likely that some structural coding or syntax was fine in the past but now with the change from autoconf-2.71 to 2.72 it is no longer allowed, or is flagged up when in the past it was just ignored. There are quite a few changes in autoconf-2.72 with some being marked as backwards compatibilities. All of them except one say that existing configure scripts will continue working. The one that doesn't mention that is the following change:- Configure scripts no longer support pre-1989 C compilers. Specifically, compilers that *only* implement the original “K&R” function definition syntax, and not the newer “prototyped” syntax, will not be able to parse the test programs now emitted by AC_CHECK_FUNC, AC_LANG_CALL, and similar macros. AC_PROG_CC still accepts such compilers, but this may change in the near future. This change was necessary in order to support the upcoming 2024 edition of the C standard (often referred to as “C23”), which will officially remove the function declaration syntax used by AC_CHECK_FUNC in Autoconf 2.71 and earlier. We feel that support for compilers that support only C 2024 is more useful, nowadays, than support for compilers that don’t implement a core feature of C 1989. However I am unable to figure out from this if the problem I am experiencing is related to this or not. I would not have thought so as I don't believe we are using a pre-1989 C compiler. Any ideas from anyone on how to fix this issue? There is nothing critical from a security or other vulnerability aspect in autoconf-2.72 but it would be nice to figure this out before we get to a stage where it has to be made to work. Regards, Adolf.
Hello Adolf,
Hmm, then let us maybe look at migrating collectd. It will be a pain, but it seems that fixing the autoconf problem won’t be much easier.
There is a migration script here:
https://github.com/collectd/collectd/blob/db4a13bdf37b1103c2014261458323e26b...
Should we maybe start with building a new branch with the latest version of collectd 5 and simply check if a newly installed system is still working? I don’t think there will be that many changes required. Would you be up for giving that a go?
If we can then run the migration script on existing systems we might almost be there…
-Michael
On 22 Nov 2024, at 18:01, Adolf Belka adolf.belka@ipfire.org wrote:
Hi Michael,
On 20/11/2024 19:25, Michael Tremer wrote:
Let’s maybe try to avoid running autoconf altogether. There might be a small chance because only two patches change configure.ac. There are others that change Makefile.in, so this might not work at all. Let’s see… Could you please remove the patches in src/patches/collectd with number 12 and 13? Then remove the autoreconf commands from lfs/collectd. Things should hopefully still apply and after the first run of configure, make should not try to run autoconf again. Not sure but worth a try.
I removed the two patches and also removed the two autoreconf commands, leaving the autoupdate command in place.
Unfortunately it failed to build and had the following error message
aclocal.m4:16: warning: this file was generated for autoconf 2.67. You have another version of autoconf. It may work, but is not guaranteed to. If you have problems, you may need to regenerate the build system entirely. To do so, use the procedure documented by the package, typically `autoreconf'. configure.in:533: error: AC_PROG_CC cannot be called after AM_PROG_CC_C_O configure.in:533: the top level autom4te: error: /tools_x86_64/bin/m4 failed with exit status: 1 make[1]: *** [Makefile:375: configure] Error 1 make[1]: Leaving directory '/usr/src/collectd-4.10.9' make: *** [collectd:117: /usr/src/log/collectd-4.10.9] Error 2
I can’t remember what has stopped us from moving with upstream apart from the RRD file format. If this all doesn’t work, maybe we should look at this all again and see if we can’t migrate to the latest upstream version again.
As far as I can remember it was mentioned that the issue was the changed format and RRD being used in so many places making the update require changes in so many places in IPFire-2.x
Regards,
Adolf.
Best, -Michael
On 19 Nov 2024, at 13:55, Adolf Belka adolf.belka@ipfire.org wrote: Hi Michael,
Also reran the collectd autoreconf with the autoconf-2.71 and in that case the line has yes:) so something about the autoconf-2.72 is causing that one yes: in the configure file to be missing the ) . There are something like 20 of those yes: entries and with the autoconf-2.72 only the one I show below is the one with a missing ), all the rest have a yes:) entry.
Regards,
Adolf.
On 19/11/2024 14:43, Adolf Belka wrote: Hi Michael,
I obtained the configure created by the autoreconf etc and I have found the error. Here is the affected line 18710
18706 if test "x$ac_ct_CC" = x; then 18707 CC="" 18708 else 18709 case $cross_compiling:$ac_tool_warned in 18710 yes: 18711 18712 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 18713 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} 18714 ac_tool_warned=yes ;; 18715 esac 18716 CC=$ac_ct_CC 18717 fi 18718 else 18719 CC="$ac_cv_prog_CC" 18720 fi
That line should be yes:) so it is missing a right bracket. Not sure if you can figure where and why that is occurring but presumably a patch can be written to be applied after the autoreconf etc and before the ./configure command
Regards, Adolf.
On 19/11/2024 12:41, Michael Tremer wrote: Hello Adolf, In the build script we are running autoreconf which will regenerate the configure script: https://git.ipfire.org/?p=ipfire-2.x.git;a=blob;f=lfs/collectd;h=d1d4ea72138... Is there any output of that command? There should be some warnings which might help us to find out what we need to change.
On 13 Nov 2024, at 10:30, Adolf Belka adolf.belka@ipfire.org wrote: Hi All, I did an update run with autoconf taking it from 2.71 to 2.72 autoconf built without any problems, however collectd then failed for a syntax error in the configure file. Confirmed that this was due to autoconf by changing the versions back and forward and the problem went away and then came back again. The collectd build error message is checking for size_t... yes checking for uid_t... yes checking for gid_t... yes ./configure: line 18710: syntax error near unexpected token `newline' ./configure: line 18710: `yes:' make: *** [collectd:120: /usr/src/log/collectd-4.10.9] Error 2 The section around line 18710 in the configure file is 18707 do : 18708 as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh` 18709 ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default" 18710 if eval test "x$"$as_ac_Header"" = x"yes"; then :
There is an extra : here which is probably what causes the syntax error.
18711 cat >>confdefs.h <<_ACEOF 18712 #define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1 18713 _ACEOF 18714 18715 else 18716 with_libiptc="no (header file missing)" 18717 fi However there are 15 occurrences of the exact same text as line 18710 in the configure file so I am not convinced if that line is the root cause for the syntax error but some other earlier error that causes a knock-on effect. However, my knowledge of the coding syntax is definitely not enough to figure out what needs to be fixed/changed. As collectd is a very old version it is likely that some structural coding or syntax was fine in the past but now with the change from autoconf-2.71 to 2.72 it is no longer allowed, or is flagged up when in the past it was just ignored. There are quite a few changes in autoconf-2.72 with some being marked as backwards compatibilities. All of them except one say that existing configure scripts will continue working. The one that doesn't mention that is the following change:- Configure scripts no longer support pre-1989 C compilers. Specifically, compilers that *only* implement the original “K&R” function definition syntax, and not the newer “prototyped” syntax, will not be able to parse the test programs now emitted by AC_CHECK_FUNC, AC_LANG_CALL, and similar macros. AC_PROG_CC still accepts such compilers, but this may change in the near future. This change was necessary in order to support the upcoming 2024 edition of the C standard (often referred to as “C23”), which will officially remove the function declaration syntax used by AC_CHECK_FUNC in Autoconf 2.71 and earlier. We feel that support for compilers that support only C 2024 is more useful, nowadays, than support for compilers that don’t implement a core feature of C 1989. However I am unable to figure out from this if the problem I am experiencing is related to this or not. I would not have thought so as I don't believe we are using a pre-1989 C compiler. Any ideas from anyone on how to fix this issue? There is nothing critical from a security or other vulnerability aspect in autoconf-2.72 but it would be nice to figure this out before we get to a stage where it has to be made to work. Regards, Adolf.
Hi Michael,
On 23/11/2024 10:12, Michael Tremer wrote:
Hello Adolf,
Hmm, then let us maybe look at migrating collectd. It will be a pain, but it seems that fixing the autoconf problem won’t be much easier.
There is a migration script here:
https://github.com/collectd/collectd/blob/db4a13bdf37b1103c2014261458323e26b...
Should we maybe start with building a new branch with the latest version of collectd 5 and simply check if a newly installed system is still working? I don’t think there will be that many changes required. Would you be up for giving that a go?
I will give that a go and see what happens and we can work from there.
Regards,
Adolf
If we can then run the migration script on existing systems we might almost be there…
-Michael
On 22 Nov 2024, at 18:01, Adolf Belka adolf.belka@ipfire.org wrote:
Hi Michael,
On 20/11/2024 19:25, Michael Tremer wrote:
Let’s maybe try to avoid running autoconf altogether. There might be a small chance because only two patches change configure.ac. There are others that change Makefile.in, so this might not work at all. Let’s see… Could you please remove the patches in src/patches/collectd with number 12 and 13? Then remove the autoreconf commands from lfs/collectd. Things should hopefully still apply and after the first run of configure, make should not try to run autoconf again. Not sure but worth a try.
I removed the two patches and also removed the two autoreconf commands, leaving the autoupdate command in place.
Unfortunately it failed to build and had the following error message
aclocal.m4:16: warning: this file was generated for autoconf 2.67. You have another version of autoconf. It may work, but is not guaranteed to. If you have problems, you may need to regenerate the build system entirely. To do so, use the procedure documented by the package, typically `autoreconf'. configure.in:533: error: AC_PROG_CC cannot be called after AM_PROG_CC_C_O configure.in:533: the top level autom4te: error: /tools_x86_64/bin/m4 failed with exit status: 1 make[1]: *** [Makefile:375: configure] Error 1 make[1]: Leaving directory '/usr/src/collectd-4.10.9' make: *** [collectd:117: /usr/src/log/collectd-4.10.9] Error 2
I can’t remember what has stopped us from moving with upstream apart from the RRD file format. If this all doesn’t work, maybe we should look at this all again and see if we can’t migrate to the latest upstream version again.
As far as I can remember it was mentioned that the issue was the changed format and RRD being used in so many places making the update require changes in so many places in IPFire-2.x
Regards,
Adolf.
Best, -Michael
On 19 Nov 2024, at 13:55, Adolf Belka adolf.belka@ipfire.org wrote: Hi Michael,
Also reran the collectd autoreconf with the autoconf-2.71 and in that case the line has yes:) so something about the autoconf-2.72 is causing that one yes: in the configure file to be missing the ) . There are something like 20 of those yes: entries and with the autoconf-2.72 only the one I show below is the one with a missing ), all the rest have a yes:) entry.
Regards,
Adolf.
On 19/11/2024 14:43, Adolf Belka wrote: Hi Michael,
I obtained the configure created by the autoreconf etc and I have found the error. Here is the affected line 18710
18706 if test "x$ac_ct_CC" = x; then 18707 CC="" 18708 else 18709 case $cross_compiling:$ac_tool_warned in 18710 yes: 18711 18712 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5 18713 printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;} 18714 ac_tool_warned=yes ;; 18715 esac 18716 CC=$ac_ct_CC 18717 fi 18718 else 18719 CC="$ac_cv_prog_CC" 18720 fi
That line should be yes:) so it is missing a right bracket. Not sure if you can figure where and why that is occurring but presumably a patch can be written to be applied after the autoreconf etc and before the ./configure command
Regards, Adolf.
On 19/11/2024 12:41, Michael Tremer wrote: Hello Adolf, In the build script we are running autoreconf which will regenerate the configure script: https://git.ipfire.org/?p=ipfire-2.x.git;a=blob;f=lfs/collectd;h=d1d4ea72138... Is there any output of that command? There should be some warnings which might help us to find out what we need to change. > On 13 Nov 2024, at 10:30, Adolf Belka adolf.belka@ipfire.org wrote: > Hi All, > I did an update run with autoconf taking it from 2.71 to 2.72 > autoconf built without any problems, however collectd then failed for a syntax error in the configure file. > Confirmed that this was due to autoconf by changing the versions back and forward and the problem went away and then came back again. > The collectd build error message is > checking for size_t... yes > checking for uid_t... yes > checking for gid_t... yes > ./configure: line 18710: syntax error near unexpected token `newline' > ./configure: line 18710: `yes:' > make: *** [collectd:120: /usr/src/log/collectd-4.10.9] Error 2 > The section around line 18710 in the configure file is > 18707 do : > 18708 as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh` > 18709 ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default" > 18710 if eval test "x$"$as_ac_Header"" = x"yes"; then : There is an extra : here which is probably what causes the syntax error. > 18711 cat >>confdefs.h <<_ACEOF > 18712 #define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1 > 18713 _ACEOF > 18714 > 18715 else > 18716 with_libiptc="no (header file missing)" > 18717 fi > However there are 15 occurrences of the exact same text as line 18710 in the configure file so I am not convinced if that line is the root cause for the syntax error but some other earlier error that causes a knock-on effect. > However, my knowledge of the coding syntax is definitely not enough to figure out what needs to be fixed/changed. > As collectd is a very old version it is likely that some structural coding or syntax was fine in the past but now with the change from autoconf-2.71 to 2.72 it is no longer allowed, or is flagged up when in the past it was just ignored. > There are quite a few changes in autoconf-2.72 with some being marked as backwards compatibilities. All of them except one say that existing configure scripts will continue working. The one that doesn't mention that is the following change:- > Configure scripts no longer support pre-1989 C compilers. > Specifically, compilers that *only* implement the original “K&R” > function definition syntax, and not the newer “prototyped” syntax, > will not be able to parse the test programs now emitted by > AC_CHECK_FUNC, AC_LANG_CALL, and similar macros. AC_PROG_CC still > accepts such compilers, but this may change in the near future. > This change was necessary in order to support the upcoming 2024 > edition of the C standard (often referred to as “C23”), which will > officially remove the function declaration syntax used by > AC_CHECK_FUNC in Autoconf 2.71 and earlier. We feel that support > for compilers that support only C 2024 is more useful, nowadays, > than support for compilers that don’t implement a core feature of > C 1989. > However I am unable to figure out from this if the problem I am experiencing is related to this or not. I would not have thought so as I don't believe we are using a pre-1989 C compiler. > Any ideas from anyone on how to fix this issue? > There is nothing critical from a security or other vulnerability aspect in autoconf-2.72 but it would be nice to figure this out before we get to a stage where it has to be made to work. > Regards, > Adolf.
-
Adolf Belka -
Michael Tremer