1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
# 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)
if(NOT DEFINED USE_QUADMATH OR USE_QUADMATH)
if(NOT DEFINED HAVE_EXTENDED_NUMERIC_LITERALS)
check_cxx_compiler_flag("-Werror -fext-numeric-literals" HAVE_EXTENDED_NUMERIC_LITERALS)
endif()
if (HAVE_EXTENDED_NUMERIC_LITERALS)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fext-numeric-literals")
endif()
cmake_push_check_state(RESET)
list(APPEND CMAKE_REQUIRED_LIBRARIES "quadmath")
CHECK_CXX_SOURCE_COMPILES("
#include <quadmath.h>
int main(void){
__float128 foo = sqrtq(123.456);
foo = FLT128_MIN;
}" QUADMATH_FOUND)
cmake_pop_check_state()
if (QUADMATH_FOUND)
set(QUADMATH_LIBRARIES "quadmath")
set(HAVE_QUAD "${QUADMATH_FOUND}")
if (NOT TARGET QuadMath::QuadMath)
add_library(QuadMath::QuadMath INTERFACE IMPORTED)
set_target_properties(QuadMath::QuadMath PROPERTIES
INTERFACE_LINK_LIBRARIES quadmath
INTERFACE_COMPILE_DEFINITIONS _GLIBCXX_USE_FLOAT128
INTERFACE_COMPILE_OPTIONS $<$<CXX_COMPILER_ID:GNU>:-fext-numeric-literals>)
endif()
endif()
endif()
if (USE_QUADMATH AND NOT QUADMATH_FOUND)
message(STATUS "Quadruple precision math support is unavailable! Skipping it.")
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Quadmath
DEFAULT_MSG
QUADMATH_LIBRARIES
HAVE_QUAD
)
|
