OpenTTD-patches/cmake/FindAllegro.cmake

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#[=======================================================================[.rst:
FindAllegro
-------
Finds the allegro library.
Result Variables
^^^^^^^^^^^^^^^^
This will define the following variables:
``Allegro_FOUND``
True if the system has the allegro library.
``Allegro_INCLUDE_DIRS``
Include directories needed to use allegro.
``Allegro_LIBRARIES``
Libraries needed to link to allegro.
``Allegro_VERSION``
The version of the allegro library which was found.
Cache Variables
^^^^^^^^^^^^^^^
The following cache variables may also be set:
``Allegro_INCLUDE_DIR``
The directory containing ``allegro.h``.
``Allegro_LIBRARY``
The path to the allegro library.
#]=======================================================================]
find_package(PkgConfig QUIET)
pkg_check_modules(PC_Allegro QUIET allegro<5)
find_path(Allegro_INCLUDE_DIR
NAMES allegro.h
PATHS ${PC_Allegro_INCLUDE_DIRS}
)
find_library(Allegro_LIBRARY
NAMES alleg
PATHS ${PC_Allegro_LIBRARY_DIRS}
)
set(Allegro_VERSION ${PC_Allegro_VERSION})
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Allegro
FOUND_VAR Allegro_FOUND
REQUIRED_VARS
Allegro_LIBRARY
Allegro_INCLUDE_DIR
VERSION_VAR Allegro_VERSION
)
if(Allegro_FOUND)
set(Allegro_LIBRARIES ${Allegro_LIBRARY})
set(Allegro_INCLUDE_DIRS ${Allegro_INCLUDE_DIR})
endif()
mark_as_advanced(
Allegro_INCLUDE_DIR
Allegro_LIBRARY
)