mirror of
https://github.com/OPM/opm-simulators.git
synced 2025-02-25 18:55:30 -06:00
c3304ed1a1
this is required for GCC >= 4.8 to support the 'Q' suffix for floating point literals (which are used in the quadmath.h header) In order to prevent compilers which eat the flag but do not support it from complaining constantly, it is tested for with "-Werror" enabled...
40 lines
940 B
CMake
40 lines
940 B
CMake
# Module that checks whether the compiler supports the
|
|
# quadruple precision floating point math
|
|
#
|
|
# Sets the following variables:
|
|
# HAVE_QUAD
|
|
# QUADMATH_LIBRARIES
|
|
#
|
|
# perform tests
|
|
include(CheckCSourceCompiles)
|
|
include(CheckCXXSourceCompiles)
|
|
include(CMakePushCheckState)
|
|
include(CheckCXXCompilerFlag)
|
|
|
|
check_cxx_compiler_flag("-Werror -fext-numeric-literals" HAVE_EXTENDED_NUMERIC_LITERALS)
|
|
if (HAVE_EXTENDED_NUMERIC_LITERALS)
|
|
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fext-numeric-literals")
|
|
endif()
|
|
|
|
cmake_push_check_state()
|
|
list(APPEND CMAKE_REQUIRED_LIBRARIES "quadmath")
|
|
CHECK_CXX_SOURCE_COMPILES("
|
|
#include <quadmath.h>
|
|
|
|
int main(void){
|
|
__float128 foo = sqrtq(123.456);
|
|
foo = FLT128_MIN;
|
|
}" HAVE_QUAD)
|
|
cmake_pop_check_state()
|
|
|
|
if (HAVE_QUAD)
|
|
set(QUADMATH_LIBRARIES "quadmath")
|
|
endif()
|
|
|
|
include(FindPackageHandleStandardArgs)
|
|
find_package_handle_standard_args(QuadMath
|
|
DEFAULT_MSG
|
|
QUADMATH_LIBRARIES
|
|
HAVE_QUAD
|
|
)
|