mirror of
https://github.com/gperftools/gperftools
synced 2024-12-22 07:20:01 +00:00
42 lines
1.1 KiB
CMake
42 lines
1.1 KiB
CMake
|
function(check_omit_fp_by_default result)
|
||
|
|
set(src "${CMAKE_CURRENT_BINARY_DIR}/fp.c")
|
||
|
|
set(asm "${CMAKE_CURRENT_BINARY_DIR}/fp.s")
|
||
|
|
file(WRITE ${src}
|
||
|
|
"int f(int x) { return x; } int main() { return f(0); }")
|
||
|
|
execute_process(
|
||
|
|
COMMAND ${CMAKE_CXX_COMPILER} -O2 -S -o ${asm} ${src}
|
||
|
|
RESULT_VARIABLE compiled)
|
||
|
|
if(compiled EQUAL 0 AND EXISTS ${asm})
|
||
|
|
file(STRINGS ${asm} asm_instructions)
|
||
|
|
set(fp_instructions "mov" "rsp" "rbp")
|
||
|
|
foreach(asm_instruction IN LISTS asm_instructions)
|
||
|
|
list(GET fp_instructions 0 fp_instruction)
|
||
|
|
if(asm_instruction MATCHES "${fp_instruction}")
|
||
|
|
list(REMOVE_AT fp_instructions 0)
|
||
|
|
endif()
|
||
|
|
|
||
|
|
list(LENGTH fp_instructions len)
|
||
|
|
if(len EQUAL 0)
|
||
|
|
set(matched_all ON)
|
||
|
|
break()
|
||
|
|
endif()
|
||
|
|
endforeach()
|
||
|
|
|
||
|
|
file(REMOVE ${asm})
|
||
|
|
endif()
|
||
|
|
|
||
|
|
file(REMOVE ${src})
|
||
|
|
|
||
|
|
if(NOT matched_all)
|
||
|
|
set(${result} ON PARENT_SCOPE)
|
||
|
|
endif()
|
||
|
|
|
||
|
|
if(result)
|
||
|
|
set(fp_omitted "Success")
|
||
|
|
else()
|
||
|
|
set(fp_omitted "Failed")
|
||
|
|
endif()
|
||
|
|
message(
|
||
|
|
STATUS "Checking if frame pointers are omitted by default - ${fp_omitted}")
|
||
|
|
endfunction()
|