# vim:ts=4:sw=4:expandtab:autoindent:

#

# The MIT License

#

# Copyright (c) 2008, 2009 Flusspferd contributors (see "CONTRIBUTORS" or

#                                      http://flusspferd.org/contributors.txt)

#

# Permission is hereby granted, free of charge, to any person obtaining a copy

# of this software and associated documentation files (the "Software"), to deal

# in the Software without restriction, including without limitation the rights

# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

# copies of the Software, and to permit persons to whom the Software is

# furnished to do so, subject to the following conditions:

#

# The above copyright notice and this permission notice shall be included in

# all copies or substantial portions of the Software.

#

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

# THE SOFTWARE.

#

Include(CheckFunctionExists)

include(CheckCXXSourceCompiles)

if(ICONV_INCLUDE_DIR)

  set(ICONV_FIND_QUIETLY TRUE)

endif()

find_path(ICONV_INCLUDE_DIR iconv.h

    HINTS

    ${CMAKE_PREFIX_PATH}

    ${ICONV_DIR}

    $ENV{ICONV_DIR}

    PATH_SUFFIXES include

)

if(NOT ICONV_INCLUDE_DIR STREQUAL "ICONV_INCLUDE_DIR-NOTFOUND")

    set(CMAKE_REQUIRED_INCLUDES ${ICONV_INCLUDE_DIR})

    check_function_exists(iconv_open ICONV_IN_GLIBC)

endif()

if(NOT ICONV_IN_GLIBC)

    if (CMAKE_CL_64)

        find_library(ICONV_LIBRARY

            NAMES iconv64

            HINTS

            ${CMAKE_PREFIX_PATH}

            ${ICONV_DIR}

            $ENV{ICONV_DIR}

            PATH_SUFFIXES lib64 lib

            )

    else()

        find_library(ICONV_LIBRARY

            NAMES iconv

            HINTS

            ${CMAKE_PREFIX_PATH}

            ${ICONV_DIR}

            $ENV{ICONV_DIR}

            PATH_SUFFIXES lib64 lib

            )

    endif()

    set(ICONV_TEST ${ICONV_LIBRARY})

else()

    set(ICONV_TEST "In glibc")

endif()

set(CMAKE_REQUIRED_INCLUDES ${ICONV_INCLUDE_DIR})

set(CMAKE_REQUIRED_LIBRARIES ${ICONV_LIBRARY})

if(MSVC_VERSION GREATER 1800)

    set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} legacy_stdio_definitions.lib)

endif()

check_cxx_source_compiles(

    "#include <iconv.h>

     int main() {

        iconv(iconv_t(-1), 0, 0, 0, 0);

     }"

    ICONV_COMPILES)

include(FindPackageHandleStandardArgs)

find_package_handle_standard_args(ICONV DEFAULT_MSG ICONV_TEST ICONV_INCLUDE_DIR ICONV_COMPILES)

if(ICONV_FOUND)

  set(ICONV_LIBRARIES ${ICONV_LIBRARY})

else(ICONV_FOUND)

  set(ICONV_LIBRARIES)

endif(ICONV_FOUND)

if(ICONV_FOUND)

    set(CMAKE_REQUIRED_INCLUDES ${ICONV_INCLUDE_DIR})

    set(CMAKE_REQUIRED_LIBRARIES ${ICONV_LIBRARIES})

    if(MSVC_VERSION GREATER 1800)

        set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} legacy_stdio_definitions.lib)

    endif()

    if (NOT DEFINED ICONV_ACCEPTS_NONCONST_INPUT)

        # Display a useful message first time we come through here

        message(STATUS "One (and only one) of the ICONV_ACCEPTS_... tests must pass")

    endif()

    check_cxx_source_compiles(

        "#include <iconv.h>

         int main() {

            char *p = 0;

            iconv(iconv_t(-1), &p, 0, 0, 0);

         }"

        ICONV_ACCEPTS_NONCONST_INPUT)

    check_cxx_source_compiles(

        "#include <iconv.h>

         int main() {

            char const *p = 0;

            iconv(iconv_t(-1), &p, 0, 0, 0);

         }"

        ICONV_ACCEPTS_CONST_INPUT)

    if (ICONV_LIBRARY)

        list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES ${ICONV_LIBRARY})

        list(REMOVE_DUPLICATES CMAKE_REQUIRED_LIBRARIES)

    endif()

endif()

if(NOT ICONV_ACCEPTS_CONST_INPUT AND NOT ICONV_ACCEPTS_NONCONST_INPUT)

  MESSAGE(FATAL_ERROR "Unable to determine iconv() signature")

elseif(ICONV_ACCEPTS_CONST_INPUT AND ICONV_ACCEPTS_NONCONST_INPUT)

  MESSAGE(FATAL_ERROR "Unable to determine iconv() signature - both test cases passed!")

endif()

mark_as_advanced(ICONV_LIBRARY ICONV_INCLUDE_DIR)