GitHub/libevent
1
0
Fork 0
mirror of https://github.com/libevent/libevent.git synced 2025-01-09 00:56:20 +08:00
Code Issues Packages Projects Releases Wiki Activity

Make cmake's check_const_exists() rely on cache

Browse Source
This commit is contained in:
Azat Khuzhin 2018-10-18 23:16:05 +03:00
parent 878bb2d3b9
commit 4c61a04cd5
No known key found for this signature in database
GPG Key ID: B86086848EF8686D
1 changed files with 16 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
cmake/CheckConstExists.cmake
View File

@ -1,23 +1,25 @@
include(CheckCSourceCompiles)
macro(check_const_exists CONST FILES VARIABLE)
set(check_const_exists_source "")
foreach(file ${FILES})
if (NOT DEFINED ${VARIABLE})
set(check_const_exists_source "")
foreach(file ${FILES})
set(check_const_exists_source
"${check_const_exists_source}
#include <${file}>")
endforeach()
set(check_const_exists_source
"${check_const_exists_source}
#include <${file}>")
endforeach()
set(check_const_exists_source
"${check_const_exists_source}
int main() { (void)${CONST}; return 0; }")
int main() { (void)${CONST}; return 0; }")
check_c_source_compiles("${check_const_exists_source}" ${VARIABLE})
check_c_source_compiles("${check_const_exists_source}" ${VARIABLE})
if (${${VARIABLE}})
set(${VARIABLE} 1 CACHE INTERNAL "Have const ${CONST}")
message(STATUS "Looking for ${CONST} - found")
else()
set(${VARIABLE} 0 CACHE INTERNAL "Have const ${CONST}")
message(STATUS "Looking for ${CONST} - not found")
if (${${VARIABLE}})
set(${VARIABLE} 1 CACHE INTERNAL "Have const ${CONST}")
message(STATUS "Looking for ${CONST} - found")
else()
set(${VARIABLE} 0 CACHE INTERNAL "Have const ${CONST}")
message(STATUS "Looking for ${CONST} - not found")
endif()
endif()
endmacro(check_const_exists)