+ifeq ($(PLATFORM),macosx) # native compiling to Mac OS X
+EXTRA_LDFLAGS = -lstdc++
+PLATFORM = unix
+TARGET = sdl
+endif
+
+ifeq ($(PLATFORM),os2) # native compiling to OS/2
+RANLIB = echo
+PROGNAME = ../$(PROGBASE).exe
+EXTRA_CFLAGS = -Zbin-files -D__ST_MT_ERRNO__ -Zmtd -fomit-frame-pointer
+EXTRA_LDFLAGS = -lsocket
+PLATFORM = unix
+TARGET = x11
+endif
+
+ifeq ($(PLATFORM),unix) # native compiling to Unix (generic)
+PROFILING_FLAGS = -pg
+endif
+
+ifeq ($(PLATFORM),cross-win32) # cross-compiling to Windows
+PROGNAME = ../$(PROGBASE).exe
+EXTRA_LDFLAGS = -lshfolder -lwsock32
+TARGET = sdl
+endif
+
+ifeq ($(PLATFORM),cross-msdos) # cross-compiling to MS-DOS
+PROGBASE = rocks
+PROGNAME = ../$(PROGBASE).exe
+TARGET = allegro
+endif
+
+ifeq ($(PLATFORM),msdos) # native compiling to MS-DOS
+PROGBASE = rocks
+PROGNAME = ../$(PROGBASE).exe
+SYS_CFLAGS = -DTARGET_X11
+SYS_LDFLAGS = -s -lalleg