diff options
| -rw-r--r-- | Modules/CheckCSourceCompiles.cmake | 53 | ||||
| -rw-r--r-- | Tests/MacroTest/CMakeLists.txt | 22 |
2 files changed, 75 insertions, 0 deletions
diff --git a/Modules/CheckCSourceCompiles.cmake b/Modules/CheckCSourceCompiles.cmake new file mode 100644 index 0000000..f43ebf3 --- /dev/null +++ b/Modules/CheckCSourceCompiles.cmake @@ -0,0 +1,53 @@ +# +# 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}$") +ENDMACRO(CHECK_C_SOURCE_COMPILES) + diff --git a/Tests/MacroTest/CMakeLists.txt b/Tests/MacroTest/CMakeLists.txt index 8e5a5e9..604467c 100644 --- a/Tests/MacroTest/CMakeLists.txt +++ b/Tests/MacroTest/CMakeLists.txt @@ -47,4 +47,26 @@ ENDIF("${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) |