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Ninja: add CMAKE_JOB_POOLS variable as default for JOBS_POOLS

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This enables configuration of build parallelism with the Ninja generator by
passing arguments on the command line to CMake. For example,

  cmake \
    '-DCMAKE_JOB_POOLS:STRING=compile=5;link=2' \
    -DCMAKE_JOB_POOL_COMPILE:STRING=compile \
    -DCMAKE_JOB_POOL_LINK:STRING=link \
      ~/src/MyProject
This commit is contained in:
Matt McCormick 2017-11-20 16:49:41 -05:00
parent 4d52b46c70
commit 07185055d5
5 changed files with 20 additions and 0 deletions
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1
Help/manual/cmake-variables.7.rst
View File

@ -50,6 +50,7 @@ Variables that Provide Information
/variable/CMAKE_IMPORT_LIBRARY_SUFFIX
/variable/CMAKE_JOB_POOL_COMPILE
/variable/CMAKE_JOB_POOL_LINK
/variable/CMAKE_JOB_POOLS
/variable/CMAKE_LANG_COMPILER_AR
/variable/CMAKE_LANG_COMPILER_RANLIB
/variable/CMAKE_LINK_LIBRARY_SUFFIX

3
Help/prop_gbl/JOB_POOLS.rst
View File

@ -19,5 +19,8 @@ Defined pools could be used globally by setting
or per target by setting the target properties
:prop_tgt:`JOB_POOL_COMPILE` and :prop_tgt:`JOB_POOL_LINK`.
If not set, this property uses the value of the :variable:`CMAKE_JOB_POOLS`
variable.
Build targets provided by CMake that are meant for individual interactive
use, such as ``install``, are placed in the ``console`` pool automatically.

7
Help/release/dev/cmake-job-pool.rst Normal file
View File

@ -0,0 +1,7 @@
cmake-job-pool
--------------
* A :variable:`CMAKE_JOB_POOLS` variable was added specify a value to use for
the :prop_gbl:`JOB_POOLS` property. This enables control over build
parallelism with command line configuration parameters when using the Ninja
generator.

6
Help/variable/CMAKE_JOB_POOLS.rst Normal file
View File

@ -0,0 +1,6 @@
CMAKE_JOB_POOLS
---------------
If the :prop_gbl:`JOB_POOLS` global property is not set, the value
of this variable is used in its place. See :prop_gbl:`JOB_POOLS`
for additional information.

3
Source/cmLocalNinjaGenerator.cxx
View File

@ -207,6 +207,9 @@ void cmLocalNinjaGenerator::WritePools(std::ostream& os)
const char* jobpools =
this->GetCMakeInstance()->GetState()->GetGlobalProperty("JOB_POOLS");
if (!jobpools) {
jobpools = this->GetMakefile()->GetDefinition("CMAKE_JOB_POOLS");
}
if (jobpools) {
cmGlobalNinjaGenerator::WriteComment(
os, "Pools defined by global property JOB_POOLS");