Add libopenmpt to cmake

src/CMakeLists.txt

@@ -218,6 +218,8 @@ set(SRB2_CONFIG_HAVE_ZLIB ON CACHE BOOL
 	"Enable zlib support.")
 set(SRB2_CONFIG_HAVE_GME ON CACHE BOOL
 	"Enable GME support.")
+set(SRB2_CONFIG_HAVE_OPENMPT OFF CACHE BOOL
+	"Enable OpenMPT support.")
 set(SRB2_CONFIG_HWRENDER ON CACHE BOOL
 	"Enable hardware rendering through OpenGL.")
 set(SRB2_CONFIG_USEASM OFF CACHE BOOL
@@ -230,7 +232,7 @@ set(SRB2_CONFIG_STATIC_OPENGL OFF CACHE BOOL
 ### use internal libraries?
 if(${CMAKE_SYSTEM} MATCHES "Windows") ###set on Windows only
 	set(SRB2_CONFIG_USE_INTERNAL_LIBRARIES OFF CACHE BOOL
-	"Use SRB2's internal copies of required dependencies (SDL2, PNG, zlib, GME).")
+	"Use SRB2's internal copies of required dependencies (SDL2, PNG, zlib, GME, OpenMPT).")
 endif()
 
 if(${SRB2_CONFIG_HAVE_BLUA})
@@ -340,6 +342,26 @@ if(${SRB2_CONFIG_HAVE_GME})
 	endif()
 endif()
 
+if(${SRB2_CONFIG_HAVE_OPENMPT})
+	if(${SRB2_CONFIG_USE_INTERNAL_LIBRARIES})
+		set(OPENMPT_FOUND ON)
+		set(OPENMPT_INCLUDE_DIRS ${CMAKE_SOURCE_DIR}/libs/libopenmpt/inc/libopenmpt)
+        if(${SRB2_SYSTEM_BITS} EQUAL 64)
+			set(OPENMPT_LIBRARIES "-L${CMAKE_SOURCE_DIR}/libs/libopenmpt/lib/x86 -llibopenmpt")
+		else() # 32-bit
+			set(OPENMPT_LIBRARIES "-L${CMAKE_SOURCE_DIR}/libs/libopenmpt/lib/x86_64 -llibopenmpt")
+		endif()
+	else()
+		find_package(OPENMPT)
+	endif()
+	if(${OPENMPT_FOUND})
+		set(SRB2_HAVE_OPENMPT ON)
+		add_definitions(-DHAVE_OPENMPT)
+	else()
+		message(WARNING "You have specified that OpenMPT is available but it was not found.")
+	endif()
+endif()
+
 if(${SRB2_CONFIG_HAVE_ZLIB})
 	if(${SRB2_CONFIG_USE_INTERNAL_LIBRARIES})
 		set(ZLIB_FOUND ON)

src/sdl/CMakeLists.txt

@@ -146,6 +146,7 @@ if(${SDL2_FOUND})
 			SDL2
 			SDL2_mixer
 			${GME_LIBRARIES}
+			${OPENMPT_LIBRARIES}
 			${PNG_LIBRARIES}
 			${ZLIB_LIBRARIES}
 			${OPENGL_LIBRARIES}
@@ -156,6 +157,7 @@ if(${SDL2_FOUND})
 			${SDL2_LIBRARIES}
 			${SDL2_MIXER_LIBRARIES}
 			${GME_LIBRARIES}
+			${OPENMPT_LIBRARIES}
 			${PNG_LIBRARIES}
 			${ZLIB_LIBRARIES}
 			${OPENGL_LIBRARIES}
@@ -235,6 +237,7 @@ if(${SDL2_FOUND})
 		${SDL2_INCLUDE_DIRS}
 		${SDL2_MIXER_INCLUDE_DIRS}
 		${GME_INCLUDE_DIRS}
+		${OPENMPT_INCLUDE_DIRS}
 		${PNG_INCLUDE_DIRS}
 		${ZLIB_INCLUDE_DIRS}
 		${OPENGL_INCLUDE_DIRS}
@@ -321,6 +324,9 @@ if(${SDL2_FOUND})
 		if(${SRB2_CONFIG_HAVE_GME})
 			getwinlib(libgme "libgme.dll")
 		endif()
+		if(${SRB2_CONFIG_HAVE_OPENMPT})
+			getwinlib(libopenmpt "libopenmpt.dll")
+		endif()
 
 		install(PROGRAMS
 			${win_extra_dll_list}