Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Fix OpenMP on macOS #6114

Merged
merged 3 commits into from
Oct 23, 2024
Merged

Fix OpenMP on macOS #6114

Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
44d3154
Fix OpenMP on macOS
cybaol Aug 24, 2024
e91faf0
Remove hardcode
cybaol Sep 20, 2024
3aa7609
Adopt the way from LightGBM
cybaol Oct 20, 2024
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
22 changes: 21 additions & 1 deletion CMakeLists.txt
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -286,8 +286,28 @@ endif()

# OpenMP (optional)
option(WITH_OPENMP "Build with parallelization using OpenMP" TRUE)
option(USE_HOMEBREW_FALLBACK "(macOS-only) also look in 'brew --prefix' for libraries (e.g. OpenMP)" TRUE)
if(WITH_OPENMP)
find_package(OpenMP COMPONENTS C CXX)
if(APPLE)
find_package(OpenMP COMPONENTS C CXX)
if(NOT OpenMP_FOUND)
if(USE_HOMEBREW_FALLBACK)
# libomp 15.0+ from brew is keg-only, so have to search in other locations.
# See https://github.com/Homebrew/homebrew-core/issues/112107#issuecomment-1278042927.
execute_process(COMMAND brew --prefix libomp
OUTPUT_VARIABLE HOMEBREW_LIBOMP_PREFIX
OUTPUT_STRIP_TRAILING_WHITESPACE)
set(OpenMP_C_FLAGS "-Xpreprocessor -fopenmp -I${HOMEBREW_LIBOMP_PREFIX}/include")
set(OpenMP_CXX_FLAGS "-Xpreprocessor -fopenmp -I${HOMEBREW_LIBOMP_PREFIX}/include")
set(OpenMP_C_LIB_NAMES omp)
set(OpenMP_CXX_LIB_NAMES omp)
set(OpenMP_omp_LIBRARY ${HOMEBREW_LIBOMP_PREFIX}/lib/libomp.dylib)
endif()
find_package(OpenMP COMPONENTS C CXX)
endif()
else()
find_package(OpenMP COMPONENTS C CXX)
endif()
endif()
if(OpenMP_FOUND)
string(APPEND CMAKE_C_FLAGS " ${OpenMP_C_FLAGS}")
Expand Down