[CMake] Can cmake do configure tests?

[Alexander Neundorf]

On Thursday 06 August 2009, Michael Jackson wrote:
> Here is some snippets from a project that I use: (hdf5)
>
> # Include all the necessary files for macros
> INCLUDE (${CMAKE_ROOT}/Modules/CheckFunctionExists.cmake)
> INCLUDE (${CMAKE_ROOT}/Modules/CheckIncludeFile.cmake)
> INCLUDE (${CMAKE_ROOT}/Modules/CheckIncludeFileCXX.cmake)
> INCLUDE (${CMAKE_ROOT}/Modules/CheckIncludeFiles.cmake)
> INCLUDE (${CMAKE_ROOT}/Modules/CheckLibraryExists.cmake)
> INCLUDE (${CMAKE_ROOT}/Modules/CheckSymbolExists.cmake)
> INCLUDE (${CMAKE_ROOT}/Modules/CheckTypeSize.cmake)

The above can be shortened to 

INCLUDE (CheckFunctionExists)
INCLUDE (CheckIncludeFile)
INCLUDE (CheckIncludeFileCXX)
INCLUDE (CheckIncludeFiles)
INCLUDE (CheckLibraryExists)
INCLUDE (CheckSymbolExists)
INCLUDE (CheckTypeSize)

> CHECK_LIBRARY_EXISTS("ws2_32" printf HAVE_LIBWS2_32)
> CHECK_LIBRARY_EXISTS("wsock32" printf HAVE_LIBWSOCK32)
>
> CHECK_TYPE_SIZE(char           SIZEOF_CHAR)
> CHECK_TYPE_SIZE(short          SIZEOF_SHORT)
> CHECK_TYPE_SIZE(int            SIZEOF_INT)
> CHECK_TYPE_SIZE(long           SIZEOF_LONG)
>
> CHECK_FUNCTION_EXISTS(strdup            HAVE_STRDUP)
> CHECK_FUNCTION_EXISTS(snprintf          HAVE_SNPRINTF)
> CHECK_FUNCTION_EXISTS(system            HAVE_SYSTEM)
>
> CHECK_SYMBOL_EXISTS(TIOCGWINSZ "sys/ioctl.h" HAVE_TIOCGWINSZ)
> CHECK_SYMBOL_EXISTS(TIOCGETD   "sys/ioctl.h" HAVE_TIOCGETD)

and usually after all that you want to use the configure_file() command to 
generate your specific config.h

Alex