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[CMake] Add warning for using compile and link pools on unsupported versions of CMake or non-ninja generators.

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Summary: I've gotten feedback from users on CMake 2.8 that the compile and link pool options were not working. This is expected so I'm adding a warning so we can report invalid configurations to users.

Reviewers: eugenis

Reviewed By: eugenis

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D10193

llvm-svn: 239044
This commit is contained in:
Chris Bieneman 2015-06-04 15:33:08 +00:00
parent 22f3e6f348
commit 5b17e7f4ee
1 changed files with 12 additions and 4 deletions
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16
CMakeLists.txt
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@ -32,15 +32,23 @@ project(LLVM)
set(LLVM_PARALLEL_COMPILE_JOBS "" CACHE STRING
"Define the maximum number of concurrent compilation jobs.")
if(LLVM_PARALLEL_COMPILE_JOBS)
set_property(GLOBAL APPEND PROPERTY JOB_POOLS compile_job_pool=${LLVM_PARALLEL_COMPILE_JOBS})
set(CMAKE_JOB_POOL_COMPILE compile_job_pool)
if(CMAKE_VERSION VERSION_LESS 3.0 OR NOT CMAKE_MAKE_PROGRAM STREQUAL "ninja")
message(WARNING "Job pooling is only available with Ninja generators and CMake 3.0 and later.")
else()
set_property(GLOBAL APPEND PROPERTY JOB_POOLS compile_job_pool=${LLVM_PARALLEL_COMPILE_JOBS})
set(CMAKE_JOB_POOL_COMPILE compile_job_pool)
endif()
endif()
set(LLVM_PARALLEL_LINK_JOBS "" CACHE STRING
"Define the maximum number of concurrent link jobs.")
if(LLVM_PARALLEL_LINK_JOBS)
set_property(GLOBAL APPEND PROPERTY JOB_POOLS link_job_pool=${LLVM_PARALLEL_LINK_JOBS})
set(CMAKE_JOB_POOL_LINK link_job_pool)
if(CMAKE_VERSION VERSION_LESS 3.0 OR NOT CMAKE_MAKE_PROGRAM STREQUAL "ninja")
message(WARNING "Job pooling is only available with Ninja generators and CMake 3.0 and later.")
else()
set_property(GLOBAL APPEND PROPERTY JOB_POOLS link_job_pool=${LLVM_PARALLEL_LINK_JOBS})
set(CMAKE_JOB_POOL_LINK link_job_pool)
endif()
endif()
# Add path for custom modules