From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Schantl To: development@lists.ipfire.org Subject: [PATCH 1/2] ninja: Allow to limit the parallel build processes. Date: Sat, 26 Dec 2020 18:09:23 +0100 Message-ID: <20201226170924.12208-1-stefan.schantl@ipfire.org> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="===============8090300476631431217==" List-Id: --===============8090300476631431217== Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable When run, ninja normally runs a maximum number of processes in parallel. By default this is the number of cores on the system plus two. In some cases = this can overheat a CPU or run a system out of memory. If run from the command line, p= assing a -jN parameter will limit the number of parallel processes, but some packages = embed the execution of ninja and do not pass a -j parameter. Using this optional procedure allows us to limit the number of parallel proce= sses via an environment variable, NINJAJOBS. Signed-off-by: Stefan Schantl --- lfs/ninja | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/lfs/ninja b/lfs/ninja index c968345f4..ed9f8b778 100644 --- a/lfs/ninja +++ b/lfs/ninja @@ -71,6 +71,14 @@ $(TARGET) : $(patsubst %,$(DIR_DL)/%,$(objects)) @$(PREBUILD) @rm -rf $(DIR_APP) && cd $(DIR_SRC) && tar zxf $(DIR_DL)/$(DL_FILE) =20 + # Allow to limit the paralell build processes ninja will do. + cd $(DIR_APP) && sed -i '/int Guess/a \ + int j =3D 0;\ + char* jobs =3D getenv( "NINJAJOBS" );\ + if ( jobs !=3D NULL ) j =3D atoi( jobs );\ + if ( j > 0 ) return j;\ + ' src/ninja.cc + # Configure and bootstrap the build environment cd $(DIR_APP) && python3 configure.py --bootstrap --verbose =20 --=20 2.20.1 --===============8090300476631431217==--