Add installation of instead -> sdl_instead symlink

Author: AMDmi3

cmake/InstallSymlink.cmake

@@ -0,0 +1,12 @@
+MACRO(INSTALL_SYMLINK linktarget linkname destination)
+	IF(UNIX)
+		IF(IS_ABSOLUTE ${destination})
+			SET(FULL_DESTINATION "\$ENV{DESTDIR}${destination}/${linkname}")
+		ELSE(IS_ABSOLUTE ${destination})
+			SET(FULL_DESTINATION "\$ENV{DESTDIR}${CMAKE_INSTALL_PREFIX}/${destination}/${linkname}")
+		ENDIF(IS_ABSOLUTE ${destination})
+
+		INSTALL(CODE "MESSAGE(STATUS \"Symlink: ${FULL_DESTINATION} -> ${linktarget}\")
+		              EXECUTE_PROCESS(COMMAND \${CMAKE_COMMAND} -E create_symlink ${linktarget} ${FULL_DESTINATION})")
+	ENDIF()
+ENDMACRO()

src/sdl-instead/CMakeLists.txt

@@ -166,8 +166,12 @@ ADD_EXECUTABLE(sdl-instead ${INSTEAD_SRCS})
 TARGET_LINK_LIBRARIES(sdl-instead ${INSTEAD_LIBS})
 
 # install
+INCLUDE(InstallSymlink)
+
 IF(SYSTEMWIDE)
 	INSTALL(TARGETS sdl-instead DESTINATION ${BINDIR})
+	INSTALL_SYMLINK(sdl-instead instead${CMAKE_EXECUTABLE_SUFFIX} ${BINDIR})
 ELSEIF(STANDALONE)
 	INSTALL(TARGETS sdl-instead DESTINATION ${STANDALONEDIR})
+	INSTALL_SYMLINK(sdl-instead instead${CMAKE_EXECUTABLE_SUFFIX} ${STANDALONEDIR})
 ENDIF(SYSTEMWIDE)