# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.

#.rst:
# FindIntl
# --------
#
# Find the Gettext libintl headers and libraries.
#
# This module reports information about the Gettext libintl
# installation in several variables.  General variables::
#
#   Intl_FOUND - true if the libintl headers and libraries were found
#   Intl_INCLUDE_DIRS - the directory containing the libintl headers
#   Intl_LIBRARIES - libintl libraries to be linked
#
# The following cache variables may also be set::
#
#   Intl_INCLUDE_DIR - the directory containing the libintl headers
#   Intl_LIBRARY - the libintl library (if any)
#
# .. note::
#   On some platforms, such as Linux with GNU libc, the gettext
#   functions are present in the C standard library and libintl
#   is not required.  ``Intl_LIBRARIES`` will be empty in this
#   case.
#
# .. note::
#   If you wish to use the Gettext tools (``msgmerge``,
#   ``msgfmt``, etc.), use :module:`FindGettext`.


# Written by Roger Leigh <rleigh@codelibre.net>
# brew support is by Alexis Hildebrandt <https://github.com/afh>

# Append custom gettext path to CMAKE_PREFIX_PATH
# if installed via Mac Hombrew
if(APPLE)
  find_program(HOMEBREW_PROG brew)
  if(EXISTS ${HOMEBREW_PROG})
    execute_process(COMMAND ${HOMEBREW_PROG} --prefix gettext
                    OUTPUT_STRIP_TRAILING_WHITESPACE
                    OUTPUT_VARIABLE HOMEBREW_GETTEXT_PREFIX)
    list(APPEND CMAKE_PREFIX_PATH "${HOMEBREW_GETTEXT_PREFIX}")
  endif()
endif()

# Find include directory
find_path(Intl_INCLUDE_DIR
          NAMES "libintl.h"
          DOC "libintl include directory")
mark_as_advanced(Intl_INCLUDE_DIR)

# Find all Intl libraries
find_library(Intl_LIBRARY
             NAMES "intl" "libintl"
             DOC "libintl libraries (if not in the C library)")
mark_as_advanced(Intl_LIBRARY)

FIND_PACKAGE_HANDLE_STANDARD_ARGS(Intl
                                  FOUND_VAR Intl_FOUND
                                  REQUIRED_VARS Intl_INCLUDE_DIR
                                  FAIL_MESSAGE "Failed to find Gettext libintl")

if(Intl_FOUND)
  set(Intl_INCLUDE_DIRS "${Intl_INCLUDE_DIR}")
  if(Intl_LIBRARY)
    set(Intl_LIBRARIES "${Intl_LIBRARY}")
  else()
    unset(Intl_LIBRARIES)
  endif()
endif()