CMake macro to find SDL2 Mixer

CMakeLists.txt

@@ -20,7 +20,8 @@ endif()
 
 find_package(SDL2 REQUIRED)
 find_package(SDL2_Image REQUIRED)
-include_directories(${SDL2_INCLUDE_DIR} ${SDL2_IMAGE_INCLUDE_DIR})
+find_package(SDL2_Mixer REQUIRED)
+include_directories(${SDL2_INCLUDE_DIR} ${SDL2_IMAGE_INCLUDE_DIR} ${SDL2_MIXER_INCLUDE_DIR})
 
 file(COPY uNext/files DESTINATION .)
 
@@ -29,5 +30,6 @@ include_directories(uNext)
 file(GLOB_RECURSE uMario_SOURCES "uNext/*.cpp")
 add_executable (uMario ${uMario_SOURCES})
 
-target_link_libraries(uMario ${SDL2_LIBRARY} ${SDL2_IMAGE_LIBRARY})
+target_link_libraries(uMario ${SDL2_LIBRARY} ${SDL2_IMAGE_LIBRARY} ${SDL2_MIXER_LIBRARY})
+
 install(TARGETS uMario RUNTIME DESTINATION ${BIN_DIR})

cmake/FindSDL2_Mixer.cmake

@@ -0,0 +1,98 @@
+# Locate SDL_mixer library
+#
+# This module defines:
+#
+# ::
+#
+#   SDL_MIXER_LIBRARIES, the name of the library to link against
+#   SDL_MIXER_INCLUDE_DIRS, where to find the headers
+#   SDL_MIXER_FOUND, if false, do not try to link against
+#   SDL_MIXER_VERSION_STRING - human-readable string containing the version of SDL_mixer
+#
+#
+#
+# For backward compatiblity the following variables are also set:
+#
+# ::
+#
+#   SDLMIXER_LIBRARY (same value as SDL_MIXER_LIBRARIES)
+#   SDLMIXER_INCLUDE_DIR (same value as SDL_MIXER_INCLUDE_DIRS)
+#   SDLMIXER_FOUND (same value as SDL_MIXER_FOUND)
+#
+#
+#
+# $SDLDIR is an environment variable that would correspond to the
+# ./configure --prefix=$SDLDIR used in building SDL.
+#
+# Created by Eric Wing.  This was influenced by the FindSDL.cmake
+# module, but with modifications to recognize OS X frameworks and
+# additional Unix paths (FreeBSD, etc).
+
+#=============================================================================
+# Copyright 2005-2009 Kitware, Inc.
+# Copyright 2012 Benjamin Eikel
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+#  License text for the above reference.)
+
+find_path(SDL2_MIXER_INCLUDE_DIR SDL_mixer.h
+  HINTS
+    ENV SDL2MIXERDIR
+    ENV SDL2DIR
+  PATH_SUFFIXES SDL2
+                # path suffixes to search inside ENV{SDLDIR}
+                include/SDL2 include
+)
+
+if(CMAKE_SIZEOF_VOID_P EQUAL 8)
+  set(VC_LIB_PATH_SUFFIX lib/x64)
+else()
+  set(VC_LIB_PATH_SUFFIX lib/x86)
+endif()
+
+find_library(SDL2_MIXER_LIBRARY
+  NAMES SDL2_mixer
+  HINTS
+    ENV SDL2MIXERDIR
+    ENV SDL2DIR
+  PATH_SUFFIXES lib ${VC_LIB_PATH_SUFFIX}
+)
+
+if(SDL2_MIXER_INCLUDE_DIR AND EXISTS "${SDL2_MIXER_INCLUDE_DIR}/SDL_mixer.h")
+  file(STRINGS "${SDL2_MIXER_INCLUDE_DIR}/SDL_mixer.h" SDL_MIXER_VERSION_MAJOR_LINE REGEX "^#define[ \t]+SDL_MIXER_MAJOR_VERSION[ \t]+[0-9]+$")
+  file(STRINGS "${SDL2_MIXER_INCLUDE_DIR}/SDL_mixer.h" SDL2_MIXER_VERSION_MINOR_LINE REGEX "^#define[ \t]+SDL2_MIXER_MINOR_VERSION[ \t]+[0-9]+$")
+  file(STRINGS "${SDL2_MIXER_INCLUDE_DIR}/SDL_mixer.h" SDL2_MIXER_VERSION_PATCH_LINE REGEX "^#define[ \t]+SDL2_MIXER_PATCHLEVEL[ \t]+[0-9]+$")
+  string(REGEX REPLACE "^#define[ \t]+SDL2_MIXER_MAJOR_VERSION[ \t]+([0-9]+)$" "\\1" SDL2_MIXER_VERSION_MAJOR "${SDL2_MIXER_VERSION_MAJOR_LINE}")
+  string(REGEX REPLACE "^#define[ \t]+SDL2_MIXER_MINOR_VERSION[ \t]+([0-9]+)$" "\\1" SDL2_MIXER_VERSION_MINOR "${SDL2_MIXER_VERSION_MINOR_LINE}")
+  string(REGEX REPLACE "^#define[ \t]+SDL2_MIXER_PATCHLEVEL[ \t]+([0-9]+)$" "\\1" SDL2_MIXER_VERSION_PATCH "${SDL2_MIXER_VERSION_PATCH_LINE}")
+  set(SDL2_MIXER_VERSION_STRING ${SDL2_MIXER_VERSION_MAJOR}.${SDL2_MIXER_VERSION_MINOR}.${SDL2_MIXER_VERSION_PATCH})
+  unset(SDL2_MIXER_VERSION_MAJOR_LINE)
+  unset(SDL2_MIXER_VERSION_MINOR_LINE)
+  unset(SDL2_MIXER_VERSION_PATCH_LINE)
+  unset(SDL2_MIXER_VERSION_MAJOR)
+  unset(SDL2_MIXER_VERSION_MINOR)
+  unset(SDL2_MIXER_VERSION_PATCH)
+endif()
+
+set(SDL2_MIXER_LIBRARIES ${SDL2_MIXER_LIBRARY})
+set(SDL2_MIXER_INCLUDE_DIRS ${SDL2_MIXER_INCLUDE_DIR})
+
+include(FindPackageHandleStandardArgs)
+
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL2_mixer
+                                  REQUIRED_VARS SDL2_MIXER_LIBRARIES SDL2_MIXER_INCLUDE_DIRS
+                                  VERSION_VAR SDL2_MIXER_VERSION_STRING)
+
+# for backward compatiblity
+#set(SDLMIXER_LIBRARY ${SDL_MIXER_LIBRARIES})
+#set(SDLMIXER_INCLUDE_DIR ${SDL_MIXER_INCLUDE_DIRS})
+#set(SDLMIXER_FOUND ${SDL_MIXER_FOUND})
+
+mark_as_advanced(SDL2_MIXER_LIBRARY SDL2_MIXER_INCLUDE_DIR)