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# Copyright (C) 2025 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:
FindGLib
--------
Find the GLib headers and libraries.
Optional Components
^^^^^^^^^^^^^^^^^^^
The ``COMPONENTS`` (or ``OPTIONAL_COMPONENTS``) keyword can be passed to
``find_package()``, the followin GLib components can be searched for:
- ``Module``
- ``Object``
- ``Thread``
- ``Gio``
- ``GioUnix``
For each one of the requested components, a matching target with the
``GLib::`` prefix will be defined.
Imported Targets
^^^^^^^^^^^^^^^^
``GLib::GLib``
The GLib library; if found.
``GLib::Module``
The GLib dynamic module loader library; if found. This is an optional
component.
``GLib::Object``
The GLib object, parameter, and signal library; if found. This is an
optional component.
``GLib::Thread``
The GLib threading support library; if found. This is an optional
component.
``GLib::Gio``
The GLib input/output library; if found. This is an optional component.
``GLib::GioUnix``
Unix additions to the GLib input/output library; if found. This is an
optional component.
Note that targets are aware of their dependencies. For example ``GLib::Gio``
requires ``GLib::Object``, and targets linking against ``GLib::Gio`` do _not_
need to also specify ``GLib::Object`` manually.
Result Variables
^^^^^^^^^^^^^^^^
This will define the following variables in your project:
``GLib_FOUND``
true if (the requested version of) GLib is available.
``GLib_VERSION``
Version of GLib and its components.
``GLib_Module_FOUND``
true if the optional ``Module`` component is available.
``GLib_Object_FOUND``
true if the optional ``Object`` component is available.
``GLib_Thread_FOUND``
true if the optional ``Thread`` component is available.
``GLib_Gio_FOUND``
true if the optional ``Gio`` component is available.
``GLib_GioUnix_FOUND``
true if the optional ``GioUnix`` component is available.
#]=======================================================================]
find_package(PkgConfig QUIET)
pkg_check_modules(PC_GLib QUIET glib-2.0)
set(GLib_COMPILE_OPTIONS ${PC_GLib_CFLAGS_OTHER})
set(GLib_VERSION ${PC_GLib_VERSION})
find_library(GLib_LIBRARY
NAMES glib-2.0
HINTS ${PC_GLib_LIBDIR}
${PC_GLib_LIBRARY_DIRS}
)
find_path(GLib_INCLUDE_DIR
NAMES glib.h
HINTS ${PC_GLib_INCLUDEDIR}
${PC_GLib_INCLUDE_DIRS}
PATH_SUFFIXES glib-2.0
)
# The glibconfig.h file is usually installed under $PREFIX/lib/glib-2.0
# instead of $PREFIX/include/glib-2.0, but the needed include path will
# be provided by pkg-config, so we can use the same set of HINTS here,
# plus a path derived from the location of the library.
cmake_path(REPLACE_FILENAME GLib_LIBRARY
OUTPUT_VARIABLE GLib_LIBRARY_DIR)
cmake_path(APPEND GLib_LIBRARY_DIR
glib-2.0 include
OUTPUT_VARIABLE GLib_Config_LIBDIR_INCLUDE_HINT)
find_path(GLib_Config_INCLUDE_DIR
NAMES glibconfig.h
HINTS ${PC_GLib_INCLUDEDIR}
${PC_GLib_INCLUDE_DIRS}
${GLib_Config_LIBDIR_INCLUDE_HINT}
)
set(GLib_INCLUDE_DIRS "${GLib_INCLUDE_DIR};${GLib_Config_INCLUDE_DIR}")
if (NOT GLib_VERSION AND EXISTS "${GLib_Config_INCLUDE_DIR}/glibconfig.h")
file(READ "${GLib_Config_INCLUDE_DIR}/glibconfig.h" GLib_Config_CONTENT)
string(REGEX MATCH "#define +GLIB_MAJOR_VERSION +([0-9]+)" _dummy "${GLib_Config_CONTENT")
set(GLib_VERSION_MAJOR "${CMAKE_MATCH_1}")
string(REGEX MATCH "#define +GLIB_MINOR_VERSION +([0-9]+)" _dummy "${GLib_Config_CONTENT")
set(GLib_VERSION_MINOR "${CMAKE_MATCH_1}")
string(REGEX MATCH "#define +GLIB_MICRO_VERSION +([0-9]+)" _dummy "${GLib_Config_CONTENT")
set(GLib_VERSION_MICRO "${CMAKE_MATCH_1}")
set(GLib_VERSION "${GLib_VERSION_MAJOR}.${GLib_VERSION_MINOR}.${GLib_VERSION_MICRO}")
endif ()
if (GLib_LIBRARY AND NOT TARGET GLib::GLib)
add_library(GLib::GLib UNKNOWN IMPORTED GLOBAL)
set_target_properties(GLib::GLib PROPERTIES
IMPORTED_LOCATION "${GLib_LIBRARY}"
INTERFACE_COMPILE_OPTIONS "${GLib_COMPILE_OPTIONS}"
INTERFACE_INCLUDE_DIRECTORIES "${GLib_INCLUDE_DIRS}"
)
endif ()
macro(GLib_DeclareComponent name module library)
set(GLib_${name}__module "${module}")
set(GLib_${name}__library "${library}")
set(GLib_${name}__dependencies "${ARGN}")
endmacro()
function(GLib_HandleComponent name)
if (TARGET GLib::${name})
set(GLib_${name}_FOUND TRUE PARENT_SCOPE)
return()
endif ()
set(module "${GLib_${name}__module}")
set(library "${GLib_${name}__library}")
set(dependencies "${GLib_${name}__dependencies}")
if (NOT dependencies)
set(dependencies GLib)
endif ()
foreach (depname IN LISTS dependencies)
GLib_HandleComponent(${depname})
set(GLib_${depname}_FOUND "${GLib_${depname}_FOUND}" PARENT_SCOPE)
endforeach ()
pkg_check_modules(PC_GLib_${name} QUIET ${module})
find_library(GLib_${name}_LIBRARY
NAMES ${library}
HINTS ${PC_GLib_LIBDIR}
${PC_GLib_LIBRARY_DIRS}
${PC_GLib_${name}_LIBDIR}
${PC_GLib_${name}_LIBRARY_DIRS}
)
if (NOT GLib_${name}_LIBRARY)
return()
endif ()
set(GLib_${name}_FOUND TRUE PARENT_SCOPE)
list(TRANSFORM dependencies PREPEND GLib::)
add_library(GLib::${name} UNKNOWN IMPORTED GLOBAL)
set_target_properties(GLib::${name} PROPERTIES IMPORTED_LOCATION "${GLib_${name}_LIBRARY}")
target_include_directories(GLib::${name} INTERFACE ${PC_GLib_${name}_INCLUDEDIR})
target_include_directories(GLib::${name} INTERFACE ${PC_GLib_${name}_INCLUDE_DIRS})
target_compile_options(GLib::${name} INTERFACE ${PC_GLib_${name}_CFLAGS})
target_compile_options(GLib::${name} INTERFACE ${PC_GLib_${name}_CFLAGS_OTHER})
target_link_libraries(GLib::${name} INTERFACE ${dependencies})
endfunction()
GLib_DeclareComponent(Module gmodule-2.0 gmodule-2.0)
GLib_DeclareComponent(Object gobject-2.0 gobject-2.0)
GLib_DeclareComponent(Thread gthread-2.0 gthread-2.0)
GLib_DeclareComponent(Gio gio-2.0 gio-2.0 Object)
GLib_DeclareComponent(GioUnix gio-unix-2.0 gio-2.0 Gio)
foreach (component IN LISTS GLib_FIND_COMPONENTS)
GLib_HandleComponent(${component})
endforeach ()
mark_as_advanced(
GLib_INCLUDE_DIR
GLib_Config_INCLUDE_DIR
GLib_LIBRARY
)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(GLib
REQUIRED_VARS GLib_LIBRARY GLib_INCLUDE_DIRS
VERSION_VAR GLib_VERSION
HANDLE_COMPONENTS
)
|
