clang can be installed supporting OpenMP without having omp.h installed: add check (9334c72c) · Commits · 郑智淋 / lammps

cmake/CMakeLists.txt

+5 −1

Original line number	Diff line number	Diff line
		@@ -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 −0

Original line number	Diff line number	Diff line
		@@ -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)