CMakeModules/FindIconv.cmake

   1 # - Try to find Iconv
   2 # Once done this will define
   3 #
   4 #  ICONV_FOUND - system has Iconv
   5 #  ICONV_INCLUDE_DIR - the Iconv include directory
   6 #  ICONV_LIBRARIES - Link these to use Iconv
   7 #  ICONV_SECOND_ARGUMENT_IS_CONST - the second argument for iconv() is const
   8 #
   9 include(CheckCCompilerFlag)
  10 include(CheckCSourceCompiles)
  11
  12 IF (ICONV_INCLUDE_DIR AND ICONV_LIBRARIES)
  13   # Already in cache, be silent
  14   SET(ICONV_FIND_QUIETLY TRUE)
  15 ENDIF (ICONV_INCLUDE_DIR AND ICONV_LIBRARIES)
  16
  17 FIND_PATH(ICONV_INCLUDE_DIR iconv.h HINTS /sw/include/ PATHS /opt/local)
  18
  19 FIND_LIBRARY(ICONV_LIBRARIES NAMES iconv libiconv c PATHS /opt/local)
  20
  21 IF(ICONV_INCLUDE_DIR AND ICONV_LIBRARIES)
  22    SET(ICONV_FOUND TRUE)
  23 ENDIF()
  24
  25 set(CMAKE_REQUIRED_INCLUDES ${ICONV_INCLUDE_DIR})
  26 set(CMAKE_REQUIRED_LIBRARIES ${ICONV_LIBRARIES})
  27 IF(ICONV_FOUND)
  28   check_c_compiler_flag("-Werror" ICONV_HAVE_WERROR)
  29   set (CMAKE_C_FLAGS_BACKUP "${CMAKE_C_FLAGS}")
  30   if(ICONV_HAVE_WERROR)
  31     set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Werror")
  32   ENDIF()
  33   check_c_source_compiles("
  34   #include <iconv.h>
  35   int main(){
  36     iconv_t conv = 0;
  37     const char* in = 0;
  38     size_t ilen = 0;
  39     char* out = 0;
  40     size_t olen = 0;
  41     iconv(conv, &in, &ilen, &out, &olen);
  42     return 0;
  43   }
  44 " ICONV_SECOND_ARGUMENT_IS_CONST )
  45   set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS_BACKUP}")
  46 ENDIF()
  47 set(CMAKE_REQUIRED_INCLUDES)
  48 set(CMAKE_REQUIRED_LIBRARIES)
  49
  50 IF(ICONV_FOUND)
  51   IF(NOT ICONV_FIND_QUIETLY)
  52     MESSAGE(STATUS "Found Iconv: ${ICONV_LIBRARIES}")
  53   ENDIF()
  54 ELSE()
  55   IF(Iconv_FIND_REQUIRED)
  56     MESSAGE(FATAL_ERROR "Could not find Iconv")
  57   ENDIF()
  58 ENDIF()
  59
  60 MARK_AS_ADVANCED(
  61   ICONV_INCLUDE_DIR
  62   ICONV_LIBRARIES
  63   ICONV_SECOND_ARGUMENT_IS_CONST
  64 )