diff options
| -rw-r--r-- | Modules/CheckCXXSourceCompiles.cmake | 53 | ||||
| -rw-r--r-- | Tests/MacroTest/CMakeLists.txt | 17 |
2 files changed, 69 insertions, 1 deletions
diff --git a/Modules/CheckCXXSourceCompiles.cmake b/Modules/CheckCXXSourceCompiles.cmake new file mode 100644 index 0000000..72fe1a9 --- /dev/null +++ b/Modules/CheckCXXSourceCompiles.cmake @@ -0,0 +1,53 @@ +# +# Check if the source code provided in the SOURCE argument compiles. +# +# CHECK_CXX_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_CXX_SOURCE_COMPILES SOURCE VAR) + IF("${VAR}" MATCHES "^${VAR}$") + SET(MACRO_CHECK_FUNCTION_DEFINITIONS + "-D${VAR} ${CMAKE_REQUIRED_FLAGS}") + IF(CMAKE_REQUIRED_LIBRARIES) + SET(CHECK_CXX_SOURCE_COMPILES_ADD_LIBRARIES + "-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}") + ENDIF(CMAKE_REQUIRED_LIBRARIES) + IF(CMAKE_REQUIRED_INCLUDES) + SET(CHECK_CXX_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} + ${CMAKE_BINARY_DIR}/CMakeTmp/src.cxx + CMAKE_FLAGS + "${CHECK_CXX_SOURCE_COMPILES_ADD_LIBRARIES}" + "${CHECK_CXX_SOURCE_COMPILES_ADD_INCLUDES}" + OUTPUT_VARIABLE OUTPUT) + IF(${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}$") +ENDMACRO(CHECK_CXX_SOURCE_COMPILES) + diff --git a/Tests/MacroTest/CMakeLists.txt b/Tests/MacroTest/CMakeLists.txt index 604467c..d4642a7 100644 --- a/Tests/MacroTest/CMakeLists.txt +++ b/Tests/MacroTest/CMakeLists.txt @@ -1,5 +1,5 @@ # a simple C only test case -PROJECT (littleMacroTest C) +PROJECT (littleMacroTest) SET(CMAKE_C_FLAGS "${CMAKE_ANSI_CFLAGS} ${CMAKE_C_FLAGS}") @@ -69,4 +69,19 @@ ELSE(SOME_CHECK) MESSAGE(FATAL_ERROR "CheckCSourceCompiles does not work") ENDIF(SOME_CHECK) +INCLUDE(CheckCXXSourceCompiles) +Check_CXX_Source_Compiles( +" +#include <stdio.h> +int main(int ac, char*av[]){ + if(ac > 1000){return *av[0];} + return 0; +}" +SOME_CHECK) +IF(SOME_CHECK) + MESSAGE("CheckCXXSourceCompiles works") +ELSE(SOME_CHECK) + MESSAGE(FATAL_ERROR "CheckCXXSourceCompiles does not work") +ENDIF(SOME_CHECK) + ADD_EXECUTABLE(MacroTest macroTest.c) |