Files @ r25625:c14e95bbb24a
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Location: cpp/openttd-patchpack/source/cmake/FindAllegro.cmake

Patric Stout
Add: '-X' option to ignore global folders in the search path (#9341)

This is extreme useful for automated testing. Without this, OpenTTD
will always look in your personal-dir (like ~/.local/share/openttd
or %USER%\Documents\OpenTTD). For most users this is exactly what
we want, that there is a shared place for all their files.

However, for automated testing this is rather annoying, as your
local development files influence the automated test. As such,
'-X' counters this, and only gives the local folders. This is
especially useful in combination with '-x' and '-c'.
#[=======================================================================[.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
)