Add FindGeekbit.cmake

1 files changed, 84 insertions, 0 deletions

diff --git a/cmake/FindGeekbit.cmake b/cmake/FindGeekbit.cmake
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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:
+FindGeekbit
+-----------
+
+Find Geekbit (an open source software development kit for the Geekbit
+handheld video game console) libraries and header files.
+
+Imported targets
+^^^^^^^^^^^^^^^^
+
+This module defines the following :prop_tgt:`IMPORTED` targets:
+
+  ``geekbit::geekbit``,
+  The geekbit library, if found.
+
+Result variables
+^^^^^^^^^^^^^^^^
+
+This module will set the following variables in your project:
+
+``GEEKBIT_FOUND``
+  true if geekbit libraries and header files were found.
+``GEEKBIT_VERSION``
+  geekbit release version
+``GEEKBIT_INCLUDE_DIRS``
+  the directory containing the geekbit headers; note
+  ``GEEKBIT_INCLUDE_DIRS`` is also required
+``GEEKBIT_LIBRARIES``
+  geekbit libraries to be linked; note ``GEEKBIT_LIBRARIES`` is also
+  required
+
+#]=======================================================================]
+
+find_path(GEEKBIT_INCLUDE_DIRS
+    NAMES
+        geekbit/gb.h
+    HINTS
+        ENV GEEKBIT_PATH
+    PATH_SUFFIXES
+        include
+)
+
+find_library(GEEKBIT_LIBRARIES
+    NAMES geekbit
+    HINTS
+        ENV GEEKBIT_PATH
+    PATH_SUFFIXES
+        lib
+)
+
+# Header files are meant to be included as "geekbit/<file>.h". Therefore,
+# the "geekbit" directory must not be referred to by GEEKBIT_INCLUDE_DIRS.
+string(REGEX REPLACE "include/geekbit[/]*$"
+    "include" GEEKBIT_INCLUDE_DIRS ${GEEKBIT_INCLUDE_DIRS})
+
+if(GEEKBIT_INCLUDE_DIRS AND EXISTS "${GEEKBIT_INCLUDE_DIRS}/geekbit/version.h")
+    set(version_regex "^#define[ \t]+GEEKBIT_VERSION_STRING[ \t]+\"([0-9\.]+)\"$")
+    file(STRINGS "${GEEKBIT_INCLUDE_DIRS}/geekbit/version.h" GEEKBIT_VERSION_LINE REGEX ${version_regex})
+    string(REGEX REPLACE ${version_regex} "\\1" GEEKBIT_VERSION "${GEEKBIT_VERSION_LINE}")
+    unset(GEEKBIT_VERSION_LINE)
+    unset(version_regex)
+endif()
+
+include(FindPackageHandleStandardArgs)
+
+find_package_handle_standard_args(Geekbit
+    REQUIRED_VARS
+        GEEKBIT_LIBRARIES GEEKBIT_INCLUDE_DIRS
+    VERSION_VAR
+        GEEKBIT_VERSION
+)
+
+if(GEEKBIT_FOUND)
+    if(NOT TARGET Geekbit::Geekbit)
+        add_library(Geekbit::Geekbit INTERFACE IMPORTED)
+        target_include_directories(Geekbit::Geekbit
+            INTERFACE "${GEEKBIT_INCLUDE_DIRS}")
+        set_target_properties(Geekbit::Geekbit PROPERTIES
+            IMPORTED_LOCATION "${GEEKBIT_LIBRARIES}")
+    endif()
+endif()