Skip to content

CMake: Demote the OpenMP mixed linkage check to NOTICE #5434

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

Open
wants to merge 2 commits into
base: develop
Choose a base branch
from
Open

CMake: Demote the OpenMP mixed linkage check to NOTICE #5434

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
fd8f0d4
CMake: Demote the OpenMP mixed linkage check to NOTICE
ywwry66 Sep 1, 2025
ed6c223
CMake: Improve the wording of the OpenMP mixed linkage check
ywwry66 Sep 2, 2025
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
14 changes: 10 additions & 4 deletions cmake/system.cmake
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -418,10 +418,16 @@ if (USE_OPENMP)
if (NOT NOFORTRAN)
find_package(OpenMP COMPONENTS Fortran REQUIRED)
# Avoid mixed OpenMP linkage
get_target_property(OMP_C_LIB OpenMP::OpenMP_C INTERFACE_LINK_LIBRARIES)
get_target_property(OMP_Fortran_LIB OpenMP::OpenMP_Fortran INTERFACE_LINK_LIBRARIES)
if (NOT OMP_C_LIB STREQUAL OMP_Fortran_LIB)
message(FATAL_ERROR "Multiple OpenMP runtime libraries detected. Mixed OpenMP runtime linkage is dangerous. You may pass -DOpenMP_LANG_LIB_NAMES and -DOpenMP_omp_LIBRARY to manually choose the OpenMP library.")
get_target_property(OMP_C_LIBS OpenMP::OpenMP_C INTERFACE_LINK_LIBRARIES)
get_target_property(OMP_F_LIBS OpenMP::OpenMP_Fortran INTERFACE_LINK_LIBRARIES)
if (NOT OMP_C_LIBS STREQUAL OMP_F_LIBS)
message(NOTICE
"CMake detected different OpenMP libraries for C and Fortran:\n"
"C=${OMP_C_LIBS}\n"
"Fortran=${OMP_F_LIBS}\n"
"In case you encounter issues, please check that this is correct.\n"
"You may pass -DOpenMP_<lang>_LIB_NAMES and -DOpenMP_<libname>_LIBRARY to cmake to manually force the OpenMP library."
)
endif()
endif ()
endif ()
Expand Down
Loading