cmake/modules/FindIconv.cmake

0001 # - Try to find Iconv
0002 # Once done this will define
0003 #
0004 #  ICONV_FOUND - system has Iconv
0005 #  ICONV_INCLUDE_DIR - the Iconv include directory
0006 #  ICONV_LIBRARIES - Link these to use Iconv
0007 #  ICONV_SECOND_ARGUMENT_IS_CONST - the second argument for iconv() is const
0008 #
0009 include(CheckCXXSourceCompiles)
0010
0011 if (ICONV_INCLUDE_DIR AND ICONV_LIBRARIES)
0012   # Already in cache, be silent
0013   set(ICONV_FIND_QUIETLY TRUE)
0014 endif ()
0015
0016 find_path(ICONV_INCLUDE_DIR iconv.h)
0017
0018 find_library(ICONV_LIBRARIES NAMES iconv libiconv libiconv-2 c)
0019
0020 if(ICONV_INCLUDE_DIR AND ICONV_LIBRARIES)
0021    set(ICONV_FOUND TRUE)
0022 endif()
0023
0024 set(CMAKE_REQUIRED_INCLUDES ${ICONV_INCLUDE_DIR})
0025 set(CMAKE_REQUIRED_LIBRARIES ${ICONV_LIBRARIES})
0026 if(ICONV_FOUND)
0027   check_cxx_source_compiles("
0028   #include <iconv.h>
0029   int main(){
0030     iconv_t conv = 0;
0031     const char* in = 0;
0032     size_t ilen = 0;
0033     char* out = 0;
0034     size_t olen = 0;
0035     iconv(conv, &in, &ilen, &out, &olen);
0036     return 0;
0037   }
0038 " ICONV_SECOND_ARGUMENT_IS_CONST )
0039 endif()
0040 set(CMAKE_REQUIRED_INCLUDES)
0041 set(CMAKE_REQUIRED_LIBRARIES)
0042
0043 if(ICONV_FOUND)
0044   if(NOT ICONV_FIND_QUIETLY)
0045     message(STATUS "Found Iconv: ${ICONV_LIBRARIES}")
0046   endif()
0047 else()
0048   if(Iconv_FIND_REQUIRED)
0049     message(FATAL_ERROR "Could not find Iconv")
0050   endif()
0051 endif()
0052
0053 mark_as_advanced(
0054   ICONV_INCLUDE_DIR
0055   ICONV_LIBRARIES
0056   ICONV_SECOND_ARGUMENT_IS_CONST
0057 )