15 lines
364 B
CMake
15 lines
364 B
CMake
|
include(CheckCSourceCompiles)
|
||
|
|
|
||
|
|
function(check_64bit_assembly)
|
||
|
|
check_c_source_compiles("
|
||
|
|
#include <stdint.h>
|
||
|
|
|
||
|
|
int main()
|
||
|
|
{
|
||
|
|
uint64_t a = 11, tmp;
|
||
|
|
__asm__ __volatile__(\"movq $0x100000000,%1; mulq %%rsi\" : \"+a\"(a) : \"S\"(tmp) : \"cc\", \"%rdx\");
|
||
|
|
}
|
||
|
|
" HAS_64BIT_ASM)
|
||
|
|
set(HAS_64BIT_ASM ${HAS_64BIT_ASM} PARENT_SCOPE)
|
||
|
|
endfunction()
|