cmake: Rewrite FindIconv from scratch.

This version supports BSD correctly.
This commit is contained in:
Andreas Schneider 2013-07-12 11:24:53 +02:00
parent 98ea781550
commit 81df0406eb

View file

@ -2,79 +2,78 @@
# Once done this will define
#
# ICONV_FOUND - system has Iconv
# ICONV_INCLUDE_DIR - the Iconv include directory
# ICONV_INCLUDE_DIRS - the Iconv include directory
# ICONV_LIBRARIES - Link these to use Iconv
# ICONV_SECOND_ARGUMENT_IS_CONST - the second argument for iconv() is const
# ICONV_DEFINITIONS - Compiler switches required for using Iconv
#
# Copyright (c) 2013 Andreas Schneider <asn@cryptomilk.org>
#
# Redistribution and use is allowed according to the terms of the New
# BSD license.
# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
#
include(CheckCCompilerFlag)
include(CheckCSourceCompiles)
IF (ICONV_INCLUDE_DIR AND ICONV_LIBRARIES)
# Already in cache, be silent
SET(ICONV_FIND_QUIETLY TRUE)
ENDIF (ICONV_INCLUDE_DIR AND ICONV_LIBRARIES)
include(CheckIncludeFile)
include(CheckFunctionExists)
include(CheckLibraryExists)
include(CheckPrototypeDefinition)
IF(APPLE)
FIND_PATH(ICONV_INCLUDE_DIR iconv.h
find_path(ICONV_INCLUDE_DIR
NAMES
iconv.h sys/iconv.h
PATHS
/opt/local/include/
NO_CMAKE_SYSTEM_PATH
)
FIND_LIBRARY(ICONV_LIBRARIES NAMES iconv libiconv c
PATHS
/opt/local/lib/
NO_CMAKE_SYSTEM_PATH
)
ENDIF(APPLE)
FIND_PATH(ICONV_INCLUDE_DIR iconv.h PATHS /opt/local/include /sw/include)
string(REGEX REPLACE "(.*)/include/?" "\\1" ICONV_INCLUDE_BASE_DIR "${ICONV_INCLUDE_DIR}")
FIND_LIBRARY(ICONV_LIBRARIES NAMES iconv libiconv c HINTS "${ICONV_INCLUDE_BASE_DIR}/lib" PATHS /opt/local/lib)
IF(ICONV_INCLUDE_DIR AND ICONV_LIBRARIES)
SET(ICONV_FOUND TRUE)
ENDIF(ICONV_INCLUDE_DIR AND ICONV_LIBRARIES)
)
set(CMAKE_REQUIRED_INCLUDES ${ICONV_INCLUDE_DIR})
set(CMAKE_REQUIRED_LIBRARIES ${ICONV_LIBRARIES})
IF(ICONV_FOUND)
check_c_compiler_flag("-Werror" ICONV_HAVE_WERROR)
set (CMAKE_C_FLAGS_BACKUP "${CMAKE_C_FLAGS}")
if(ICONV_HAVE_WERROR)
set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Werror")
endif(ICONV_HAVE_WERROR)
check_c_source_compiles("
#include <iconv.h>
int main(){
iconv_t conv = 0;
const char* in = 0;
size_t ilen = 0;
char* out = 0;
size_t olen = 0;
iconv(conv, &in, &ilen, &out, &olen);
return 0;
}
" ICONV_SECOND_ARGUMENT_IS_CONST )
set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS_BACKUP}")
ENDIF(ICONV_FOUND)
check_include_file(iconv.h HAVE_ICONV_H)
check_include_file(sys/iconv.h HAVE_SYS_ICONV_H)
set(CMAKE_REQUIRED_INCLUDES)
set(CMAKE_REQUIRED_LIBRARIES)
IF(ICONV_FOUND)
IF(NOT ICONV_FIND_QUIETLY)
MESSAGE(STATUS "Found Iconv: ${ICONV_LIBRARIES}")
ENDIF(NOT ICONV_FIND_QUIETLY)
ELSE(ICONV_FOUND)
IF(Iconv_FIND_REQUIRED)
MESSAGE(FATAL_ERROR "Could not find Iconv")
ENDIF(Iconv_FIND_REQUIRED)
ENDIF(ICONV_FOUND)
MARK_AS_ADVANCED(
ICONV_INCLUDE_DIR
ICONV_LIBRARIES
ICONV_SECOND_ARGUMENT_IS_CONST
find_library(ICONV_LIBRARY
NAMES
iconv
libiconv
PATHS
)
if (ICONV_LIBRARY)
get_filename_component(NAME _ICONV_NAME)
get_filename_component(PATH _ICONV_PATH)
check_library_exists(${_ICONV_NAME} iconv ${_ICONV_PATH} HAVE_ICONV)
else()
check_function_exists(iconv HAVE_ICONV)
endif()
if (HAVE_ICONV_H)
set(_ICONV_PROTO_INCLUDE "iconv.h")
endif (HAVE_ICONV_H)
if (HAVE_SYS_ICONV_H)
set(_ICONV_PROTO_INCLUDE "sys/iconv.h")
endif (HAVE_SYS_ICONV_H)
check_prototype_definition(iconv
"size_t iconv(iconv_t cd, const char **inbuf, size_t *inbytesleft, char **outbuf, size_t *outbytesleft)"
"-1"
${_ICONV_PROTO_INCLUDE}
HAVE_ICONV_CONST)
set(ICONV_INCLUDE_DIRS
${ICONV_INCLUDE_DIR}
)
if (ICONV_LIBRARY)
set(ICONV_LIBRARIES
${ICONV_LIBRARIES}
${ICONV_LIBRARY}
)
endif (ICONV_LIBRARY)
include(FindPackageHandleStandardArgs)
if (ICONV_LIBRARIES)
find_package_handle_standard_args(Iconv DEFAULT_MSG ICONV_LIBRARIES ICONV_INCLUDE_DIRS)
else()
find_package_handle_standard_args(Iconv DEFAULT_MSG ICONV_INCLUDE_DIRS)
endif()
# show the ICONV_INCLUDE_DIRS and ICONV_LIBRARIES variables only in the advanced view
mark_as_advanced(ICONV_INCLUDE_DIRS ICONV_LIBRARIES)