diff options
| author | Bruce Dubbs <bdubbs@linuxfromscratch.org> | 2019-02-19 06:05:57 +0000 |
|---|---|---|
| committer | Bruce Dubbs <bdubbs@linuxfromscratch.org> | 2019-02-19 06:05:57 +0000 |
| commit | e050677ffbe61adb53ec3abd6c80228e0a9cab75 (patch) | |
| tree | 9ebdfb9d9cea48f323e8b5fc19403054a0ec3aed /chapter06 | |
| parent | 1d19f36da9ae9dde0f249fc3851a02e465cb7ec1 (diff) | |
Add an optional modification to theh build procedure for ninja to allow use the
the environment variable NINJAJOBS.
git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@11526 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
Diffstat (limited to 'chapter06')
| -rw-r--r-- | chapter06/ninja.xml | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/chapter06/ninja.xml b/chapter06/ninja.xml index 96533f1fe..5be498eb7 100644 --- a/chapter06/ninja.xml +++ b/chapter06/ninja.xml @@ -39,7 +39,7 @@ <sect2 role="installation"> <title>Installation of Ninja</title> -<!-- + <para>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 @@ -47,22 +47,28 @@ will limit the number of parallel processes, but some packages embed the execution of ninja and do not pass a -j parameter.</para> - <para>Using the <emphasis>optional</emphasis> patch below allows a user to + <para>Using the <emphasis>optional</emphasis> procedure below allows a user to limit the number of parallel processes via an environment variable, - NINJAJOBS. <command>For example</command> setting: + NINJAJOBS. <command>For example</command>, setting: - <!- - Using <command> here to make the output bold. We really don't want + <!--Using <command> here to make the output bold. We really don't want users setting this now and experience shows that many users blindly - copy/paste anything in a box. - -> + copy/paste anything in a box. --> <screen>export NINJAJOBS=4</screen> will limit ninja to four parallel processes.</para> - <para>If desired, install the patch by running:</para> + <para>If desired, add the capability to use the environment variable + NINJAJOBS by running:</para> + +<screen><userinput remap="pre">sed -i '/int Guess/a \ + int j = 0;\ + char* jobs = getenv( "NINJAJOBS" );\ + if ( jobs != NULL ) j = atoi( jobs );\ + if ( j > 0 ) return j;\ +' src/ninja.cc</userinput></screen> -<screen><userinput remap="pre">patch -Np1 -i ../ninja-1.8.2-add_NINJAJOBS_var-1.patch</userinput></screen> ---> <para>Build Ninja with:</para> <screen><userinput remap="configure">python3 configure.py --bootstrap</userinput></screen> |