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FindOpenMP: Add support for Fortran (#14656)

This commit is contained in:
Nicolas Bock 2014-08-06 10:08:00 -04:00 committed by Brad King
parent 7386d0d6df
commit d067840854
2 changed files with 51 additions and 0 deletions
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4
Help/release/dev/FindOpenMP-add-Fortran-support.rst Normal file
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@ -0,0 +1,4 @@
FindOpenMP-add-Fortran-support
------------------------------
* The :module:`FindOpenMP` module learned to support Fortran.

47
Modules/FindOpenMP.cmake
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@ -16,6 +16,7 @@
#
# OpenMP_C_FLAGS - flags to add to the C compiler for OpenMP support
# OpenMP_CXX_FLAGS - flags to add to the CXX compiler for OpenMP support
# OpenMP_Fortran_FLAGS - flags to add to the Fortran compiler for OpenMP support
# OPENMP_FOUND - true if openmp is detected
#
#
@ -27,6 +28,7 @@
# Copyright 2009 Kitware, Inc.
# Copyright 2008-2009 André Rigland Brodtkorb <Andre.Brodtkorb@ifi.uio.no>
# Copyright 2012 Rolf Eike Beer <eike@sf-mail.de>
# Copyright 2014 Nicolas Bock <nicolasbock@gmail.com>
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
@ -106,6 +108,17 @@ int main() {
}
")
# same in Fortran
set(OpenMP_Fortran_TEST_SOURCE
"
program test
use omp_lib
integer :: n
n = omp_get_num_threads()
end program test
"
)
# check c compiler
if(CMAKE_C_COMPILER_LOADED)
# if these are set then do not try to find them again,
@ -176,6 +189,40 @@ if(CMAKE_CXX_COMPILER_LOADED)
unset(OpenMP_CXX_TEST_SOURCE)
endif()
# check Fortran compiler
if(CMAKE_Fortran_COMPILER_LOADED)
# if these are set then do not try to find them again,
# by avoiding any try_compiles for the flags
if(OpenMP_Fortran_FLAGS)
unset(OpenMP_Fortran_FLAG_CANDIDATES)
else()
_OPENMP_FLAG_CANDIDATES("Fortran")
include(${CMAKE_CURRENT_LIST_DIR}/CheckFortranSourceCompiles.cmake)
endif()
foreach(FLAG IN LISTS OpenMP_Fortran_FLAG_CANDIDATES)
set(SAFE_CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")
set(CMAKE_REQUIRED_FLAGS "${FLAG}")
unset(OpenMP_FLAG_DETECTED CACHE)
if(NOT CMAKE_REQUIRED_QUIET)
message(STATUS "Try OpenMP Fortran flag = [${FLAG}]")
endif()
check_fortran_source_compiles("${OpenMP_Fortran_TEST_SOURCE}" OpenMP_FLAG_DETECTED)
set(CMAKE_REQUIRED_FLAGS "${SAFE_CMAKE_REQUIRED_FLAGS}")
if(OpenMP_FLAG_DETECTED)
set(OpenMP_Fortran_FLAGS_INTERNAL "${FLAG}")
break()
endif()
endforeach()
set(OpenMP_Fortran_FLAGS "${OpenMP_Fortran_FLAGS_INTERNAL}"
CACHE STRING "Fortran compiler flags for OpenMP parallization")
list(APPEND _OPENMP_REQUIRED_VARS OpenMP_Fortran_FLAGS)
unset(OpenMP_Fortran_FLAG_CANDIDATES)
unset(OpenMP_Fortran_TEST_SOURCE)
endif()
set(CMAKE_REQUIRED_QUIET ${CMAKE_REQUIRED_QUIET_SAVE})
if(_OPENMP_REQUIRED_VARS)