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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
#[=======================================================================[.rst:
FindIntl
--------
.. versionadded:: 3.2
Find the Gettext libintl headers and libraries.
This module reports information about the Gettext libintl
installation in several variables.
.. variable:: Intl_FOUND
True if libintl is found.
.. variable:: Intl_INCLUDE_DIRS
The directory containing the libintl headers.
.. variable:: Intl_LIBRARIES
The intl libraries to be linked.
.. variable:: Intl_VERSION
.. versionadded:: 3.21
The version of intl found (x.y.z)
.. variable:: Intl_VERSION_MAJOR
.. versionadded:: 3.21
The major version of intl
.. variable:: Intl_VERSION_MINOR
.. versionadded:: 3.21
The minor version of intl
.. variable:: Intl_VERSION_PATCH
.. versionadded:: 3.21
The patch version of intl
.. versionadded:: 3.20
This module defines :prop_tgt:`IMPORTED` target ``Intl::Intl``.
The following cache variables may also be set:
.. variable:: Intl_INCLUDE_DIR
The directory containing the libintl headers
.. variable:: Intl_LIBRARY
The libintl library (if any)
.. variable:: Intl_IS_BUILT_IN
.. versionadded:: 3.20
whether ``intl`` is a part of the C library.
.. 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::
Some libintl implementations don't embed the version number in their header files.
In this case the variables ``Intl_VERSION*`` will be empty.
.. note::
If you wish to use the Gettext tools (``msgmerge``,
``msgfmt``, etc.), use :module:`FindGettext`.
#]=======================================================================]
cmake_policy(PUSH)
cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
include(${CMAKE_CURRENT_LIST_DIR}/CMakePushCheckState.cmake)
if(CMAKE_C_COMPILER_LOADED)
include(${CMAKE_CURRENT_LIST_DIR}/CheckCSourceCompiles.cmake)
elseif(CMAKE_CXX_COMPILER_LOADED)
include(${CMAKE_CURRENT_LIST_DIR}/CheckCXXSourceCompiles.cmake)
else()
# If neither C nor CXX are loaded, implicit intl makes no sense.
set(Intl_IS_BUILT_IN FALSE)
endif()
# Check if Intl is built in to the C library.
if(NOT DEFINED Intl_IS_BUILT_IN)
if(NOT DEFINED Intl_INCLUDE_DIR AND NOT DEFINED Intl_LIBRARY)
cmake_push_check_state(RESET)
set(CMAKE_REQUIRED_QUIET TRUE)
set(Intl_IMPLICIT_TEST_CODE [[
#include <libintl.h>
int main(void) {
gettext("");
dgettext("", "");
dcgettext("", "", 0);
return 0;
}
]])
if(CMAKE_C_COMPILER_LOADED)
check_c_source_compiles("${Intl_IMPLICIT_TEST_CODE}" Intl_IS_BUILT_IN)
else()
check_cxx_source_compiles("${Intl_IMPLICIT_TEST_CODE}" Intl_IS_BUILT_IN)
endif()
cmake_pop_check_state()
else()
set(Intl_IS_BUILT_IN FALSE)
endif()
endif()
set(_Intl_REQUIRED_VARS)
if(Intl_IS_BUILT_IN)
set(_Intl_REQUIRED_VARS _Intl_IS_BUILT_IN_MSG)
set(_Intl_IS_BUILT_IN_MSG "built in to C library")
else()
set(_Intl_REQUIRED_VARS Intl_LIBRARY Intl_INCLUDE_DIR)
find_path(Intl_INCLUDE_DIR
NAMES "libintl.h"
DOC "libintl include directory")
mark_as_advanced(Intl_INCLUDE_DIR)
find_library(Intl_LIBRARY
NAMES "intl" "libintl"
NAMES_PER_DIR
DOC "libintl libraries (if not in the C library)")
mark_as_advanced(Intl_LIBRARY)
endif()
# NOTE: glibc's libintl.h does not define LIBINTL_VERSION
if(Intl_INCLUDE_DIR AND EXISTS "${Intl_INCLUDE_DIR}/libintl.h")
file(STRINGS ${Intl_INCLUDE_DIR}/libintl.h Intl_VERSION_DEFINE REGEX "LIBINTL_VERSION (.*)")
if(Intl_VERSION_DEFINE MATCHES "(0x[A-Fa-f0-9]+)")
set(Intl_VERSION_NUMBER "${CMAKE_MATCH_1}")
# encoding -> version number: (major<<16) + (minor<<8) + patch
math(EXPR Intl_VERSION_MAJOR "${Intl_VERSION_NUMBER} >> 16" OUTPUT_FORMAT HEXADECIMAL)
math(EXPR Intl_VERSION_MINOR "(${Intl_VERSION_NUMBER} - (${Intl_VERSION_MAJOR} << 16)) >> 8" OUTPUT_FORMAT HEXADECIMAL)
math(EXPR Intl_VERSION_PATCH "${Intl_VERSION_NUMBER} - ((${Intl_VERSION_MAJOR} << 16) + (${Intl_VERSION_MINOR} << 8))" OUTPUT_FORMAT HEXADECIMAL)
math(EXPR Intl_VERSION_MAJOR "${Intl_VERSION_MAJOR}" OUTPUT_FORMAT DECIMAL)
math(EXPR Intl_VERSION_MINOR "${Intl_VERSION_MINOR}" OUTPUT_FORMAT DECIMAL)
math(EXPR Intl_VERSION_PATCH "${Intl_VERSION_PATCH}" OUTPUT_FORMAT DECIMAL)
set(Intl_VERSION "${Intl_VERSION_MAJOR}.${Intl_VERSION_MINOR}.${Intl_VERSION_PATCH}")
endif()
unset(Intl_VERSION_DEFINE)
unset(Intl_VERSION_NUMBER)
endif()
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(Intl
FOUND_VAR Intl_FOUND
REQUIRED_VARS ${_Intl_REQUIRED_VARS}
VERSION_VAR Intl_VERSION
FAIL_MESSAGE "Failed to find Gettext libintl")
unset(_Intl_REQUIRED_VARS)
unset(_Intl_IS_BUILT_IN_MSG)
if(Intl_FOUND)
if(Intl_IS_BUILT_IN)
set(Intl_INCLUDE_DIRS "")
set(Intl_LIBRARIES "")
else()
set(Intl_INCLUDE_DIRS "${Intl_INCLUDE_DIR}")
set(Intl_LIBRARIES "${Intl_LIBRARY}")
endif()
if(NOT TARGET Intl::Intl)
add_library(Intl::Intl INTERFACE IMPORTED)
set_target_properties(Intl::Intl PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${Intl_INCLUDE_DIRS}"
INTERFACE_LINK_LIBRARIES "${Intl_LIBRARIES}")
endif()
endif()
cmake_policy(POP)
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