Commit e8983247 authored by Andy Cedilnik's avatar Andy Cedilnik

ENH: Add a test for C source file like AC_TRY_COMPILE

parent efc41c63
#
# Check if the source code provided in the SOURCE argument compiles.
#
# CHECK_C_SOURCE_COMPILES - macro which checks if the source code compiles\
# SOURCE - source code to try to compile
# VARIABLE - variable to store size if the type exists.
#
# Checks the following optional VARIABLES (not arguments)
# CMAKE_REQUIRED_LIBRARIES - Link to extra libraries
# CMAKE_REQUIRED_FLAGS - Extra flags to C compiler
#
MACRO(CHECK_C_SOURCE_COMPILES SOURCE VAR)
IF("${VAR}" MATCHES "^${VAR}$")
SET(MACRO_CHECK_FUNCTION_DEFINITIONS
"-D${VAR} ${CMAKE_REQUIRED_FLAGS}")
IF(CMAKE_REQUIRED_LIBRARIES)
SET(CHECK_C_SOURCE_COMPILES_ADD_LIBRARIES
"-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}")
ENDIF(CMAKE_REQUIRED_LIBRARIES)
IF(CMAKE_REQUIRED_INCLUDES)
SET(CHECK_C_SOURCE_COMPILES_ADD_INCLUDES
"-DINCLUDE_DIRECTORIES:STRING=${CMAKE_REQUIRED_INCLUDES}")
ENDIF(CMAKE_REQUIRED_INCLUDES)
FILE(WRITE "${CMAKE_BINARY_DIR}/CMakeTmp/src.c"
"${SOURCE}")
MESSAGE(STATUS "Performing Test ${VAR}")
TRY_COMPILE(${VAR}
${CMAKE_BINARY_DIR}
${CMAKE_BINARY_DIR}/CMakeTmp/src.c
CMAKE_FLAGS
"${CHECK_C_SOURCE_COMPILES_ADD_LIBRARIES}"
"${CHECK_C_SOURCE_COMPILES_ADD_INCLUDES}"
OUTPUT_VARIABLE OUTPUT)
IF(${VAR})
SET(${VAR} 1 CACHE INTERNAL "Test ${FUNCTION}")
MESSAGE(STATUS "Performing Test ${VAR} - Success")
WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeOutput.log
"Performing C SOURCE FILE Test ${VAR} succeded with the following output:\n"
"${OUTPUT}\n"
"Source file was:\n${SOURCE}\n" APPEND)
ELSE(${VAR})
MESSAGE(STATUS "Performing Test ${VAR} - Failed")
SET(${VAR} "" CACHE INTERNAL "Test ${FUNCTION}")
WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeError.log
"Performing C SOURCE FILE Test ${VAR} failed with the following output:\n"
"${OUTPUT}\n"
"Source file was:\n${SOURCE}\n" APPEND)
ENDIF(${VAR})
ENDIF("${VAR}" MATCHES "^${VAR}$")
ENDMACRO(CHECK_C_SOURCE_COMPILES)
......@@ -47,4 +47,26 @@ ENDIF("${var}" EQUAL "strange_macro" AND "${second_var}" EQUAL "second_var")
MACRO(ADD_EXECUTABLE exec)
_ADD_EXECUTABLE("mini${exec}" ${ARGN})
ENDMACRO(ADD_EXECUTABLE)
INCLUDE(CheckCSourceCompiles)
Check_C_Source_Compiles(
"
#include <stdio.h>
#ifdef __CLASSIC_C__
int main(){
int ac;
char*av[];
#else
int main(int ac, char*av[]){
#endif
if(ac > 1000){return *av[0];}
return 0;
}"
SOME_CHECK)
IF(SOME_CHECK)
MESSAGE("CheckCSourceCompiles works")
ELSE(SOME_CHECK)
MESSAGE(FATAL_ERROR "CheckCSourceCompiles does not work")
ENDIF(SOME_CHECK)
ADD_EXECUTABLE(MacroTest macroTest.c)
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