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clang can be installed supporting OpenMP without having omp.h installed: add check

This commit is contained in:
Axel Kohlmeyer 2019-04-06 08:59:06 -04:00
parent f10534a721
commit 9334c72c04
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GPG Key ID: D9B44E93BF0C375A
2 changed files with 6 additions and 1 deletions
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6
cmake/CMakeLists.txt
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@ -320,10 +320,15 @@ pkg_depends(USER-LB MPI)
pkg_depends(USER-PHONON KSPACE)
pkg_depends(USER-SCAFACOS MPI)
include(CheckIncludeFileCXX)
find_package(OpenMP QUIET)
option(BUILD_OMP "Build with OpenMP support" ${OpenMP_FOUND})
if(BUILD_OMP)
find_package(OpenMP REQUIRED)
check_include_file_cxx(omp.h HAVE_OMP_H_INCLUDE)
if(NOT HAVE_OMP_H_INCLUDE)
message(FATAL_ERROR "Cannot find required 'omp.h' header file")
endif()
set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
endif()
@ -796,7 +801,6 @@ endif()
########################################################################
# Basic system tests (standard libraries, headers, functions, types) #
########################################################################
include(CheckIncludeFileCXX)
foreach(HEADER cmath)
check_include_file_cxx(${HEADER} FOUND_${HEADER})
if(NOT FOUND_${HEADER})

1
cmake/presets/clang.cmake
View File

@ -5,6 +5,7 @@ set(CMAKE_C_COMPILER "clang" CACHE STRING "" FORCE)
set(CMAKE_CXX_FLAGS "-Wall -Wextra -g -O2 -DNDEBG" CACHE STRING "" FORCE)
set(MPI_CXX "clang++" CACHE STRING "" FORCE)
set(MPI_CXX_COMPILER "mpicxx" CACHE STRING "" FORCE)
unset(HAVE_OMP_H_INCLUDE CACHE)
set(OpenMP_C "clang" CACHE STRING "" FORCE)
set(OpenMP_C_FLAGS "-fopenmp" CACHE STRING "" FORCE)