transmission/cmake/FindICONV.cmake

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# Grabbed from http://public.kitware.com/Bug/view.php?id=13517 and slightly modified.
find_path(ICONV_INCLUDE_DIR iconv.h)
find_library(ICONV_LIBRARY NAMES iconv libiconv libiconv-2 c)
set(ICONV_INCLUDE_DIRS ${ICONV_INCLUDE_DIR})
set(ICONV_LIBRARIES ${ICONV_LIBRARY})
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(ICONV
REQUIRED_VARS
ICONV_LIBRARY
ICONV_INCLUDE_DIR
VERSION_VAR
ICONV_VERSION
)
if(ICONV_FOUND AND NOT DEFINED ICONV_SECOND_ARGUMENT_IS_CONST)
include(CheckCSourceCompiles)
set(CMAKE_REQUIRED_INCLUDES ${ICONV_INCLUDE_DIRS})
set(CMAKE_REQUIRED_LIBRARIES ${ICONV_LIBRARIES})
check_c_source_compiles("
#include <iconv.h>
int main()
{
iconv_t conv = 0;
const char * in = 0;
size_t ilen = 0;
char * out = 0;
size_t olen = 0;
iconv(conv, &in, &ilen, &out, &olen);
return 0;
}"
ICONV_SECOND_ARGUMENT_IS_CONST
FAIL_REGEX "incompatible pointer type"
FAIL_REGEX "discards qualifiers in nested pointer types")
set(CMAKE_REQUIRED_INCLUDES)
set(CMAKE_REQUIRED_LIBRARIES)
endif()
mark_as_advanced(ICONV_INCLUDE_DIR ICONV_LIBRARY ICONV_SECOND_ARGUMENT_IS_CONST)