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# - Try to find GTK+ 3.x or 4.x
#
# Copyright (C) 2012 Raphael Kubo da Costa <rakuco@webkit.org>
# Copyright (C) 2013, 2015, 2020 Igalia S.L.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND ITS CONTRIBUTORS ``AS
# IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR ITS
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#[=======================================================================[.rst:
FindGTK
-------
Find GTK headers and libraries.
Optional Components
^^^^^^^^^^^^^^^^^^^
The ``COMPONENTS`` (or ``OPTIONAL_COMPONENTS``) keyword can be passed to
``find_package()``, the following GTK components can be searched for:
- ``unix-print``
Imported Targets
^^^^^^^^^^^^^^^^
``GTK::GTK``
The GTK library, if found.
``GTK::UnixPrint``
The GTK unix-print library, if found.
Result Variables
^^^^^^^^^^^^^^^^
This will define the following variables in your project:
``GTK_FOUND``
true if (the requested version of) GTK is available.
``GTK_UNIX_PRINT_FOUND``
true if the ``unix-print`` component is available.
``GTK_4``
whether GTK 4 was detected
``GTK_3``
whether GTK 3 was detected
``GTK_VERSION``
the version of GTK.
``GTK_SUPPORTS_BROADWAY``
true if the Broadway target is built into GTK.
``GTK_SUPPORTS_QUARTZ``
true if the Quartz target is built into GTK.
``GTK_SUPPORTS_WAYLAND``
true if the Wayland target is built into GTK.
``GTK_SUPPORTS_WIN32``
true if the Windows target is built into GTK.
``GTK_SUPPORTS_X11``
true if the X11 target is built into GTK.
#]=======================================================================]
if (NOT DEFINED GTK_FIND_VERSION)
message(FATAL_ERROR "No GTK version specified")
endif ()
if (GTK_FIND_VERSION VERSION_LESS 3.90)
set(GTK_PC_MODULE "gtk+-3.0")
set(GTK_PC_UNIX_PRINT_MODULE "gtk+-unix-print-3.0")
set(GTK_4 FALSE)
set(GTK_3 TRUE)
else ()
set(GTK_PC_MODULE "gtk4")
set(GTK_PC_UNIX_PRINT_MODULE "gtk4-unix-print")
set(GTK_4 TRUE)
set(GTK_3 FALSE)
endif ()
find_package(PkgConfig QUIET)
pkg_check_modules(GTK IMPORTED_TARGET ${GTK_PC_MODULE})
set(GTK_VERSION_OK TRUE)
if (GTK_VERSION)
if (GTK_FIND_VERSION_EXACT)
if (NOT("${GTK_FIND_VERSION}" VERSION_EQUAL "${GTK_VERSION}"))
set(GTK_VERSION_OK FALSE)
endif ()
else ()
if ("${GTK_VERSION}" VERSION_LESS "${GTK_FIND_VERSION}")
set(GTK_VERSION_OK FALSE)
endif ()
endif ()
endif ()
# Set all the GTK_SUPPORTS_<target> variables to FALSE initially.
foreach (gtk_target broadway quartz wayland win32 x11)
string(TOUPPER "GTK_SUPPORTS_${gtk_target}" gtk_target)
set(${gtk_target} FALSE)
endforeach ()
if (GTK_VERSION AND GTK_VERSION_OK)
# Fetch the "targets" variable and set GTK_SUPPORTS_<target>.
pkg_get_variable(GTK_TARGETS ${GTK_PC_MODULE} targets)
separate_arguments(GTK_TARGETS)
foreach (gtk_target ${GTK_TARGETS})
string(TOUPPER "GTK_SUPPORTS_${gtk_target}" gtk_target)
set(${gtk_target} TRUE)
endforeach ()
endif ()
if (TARGET PkgConfig::GTK AND NOT TARGET GTK::GTK)
add_library(GTK::GTK INTERFACE IMPORTED GLOBAL)
set_property(TARGET GTK::GTK PROPERTY
INTERFACE_LINK_LIBRARIES PkgConfig::GTK
)
endif ()
# Try to find additional components
foreach (gtk_component ${GTK_FIND_COMPONENTS})
if (NOT "${gtk_component}" STREQUAL unix-print)
message(FATAL_ERROR "Invalid component name: ${gtk_component}")
endif ()
pkg_check_modules(GTK_UNIX_PRINT IMPORTED_TARGET "${GTK_PC_UNIX_PRINT_MODULE}")
if (GTK_FIND_REQUIRED_unix-print AND NOT GTK_UNIX_PRINT_FOUND)
message(FATAL_ERROR "Component unix-print not found")
endif ()
if (TARGET PkgConfig::GTK_UNIX_PRINT AND NOT TARGET GTK::UnixPrint)
add_library(GTK::UnixPrint INTERFACE IMPORTED GLOBAL)
set_property(TARGET GTK::UnixPrint PROPERTY
INTERFACE_LINK_LIBRARIES PkgConfig::GTK_UNIX_PRINT)
endif ()
endforeach ()
include(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(GTK DEFAULT_MSG GTK_VERSION GTK_VERSION_OK)
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