(svn r655) Add the necessary bits to make building on SunOS/Solaris work

makefiledir/Makefile.config_writer

@@ -77,6 +77,7 @@ $(MAKE_CONFIG):
 	$(call CONFIG_LINE,FREEBSD:=$(FREEBSD))
 	$(call CONFIG_LINE,MORPHOS:=$(MORPHOS))
 	$(call CONFIG_LINE,BEOS:=$(BEOS))
+	$(call CONFIG_LINE,SUNOS:=$(SUNOS))
 	$(call CONFIG_LINE,CYGWIN:=$(CYGWIN))
 	$(call CONFIG_LINE,MINGW:=$(MINGW))
 	$(call CONFIG_LINE,)	

makefiledir/Makefile.libdetection

@@ -39,6 +39,13 @@ BEOS_NET_SERVER:=1
 endif
 endif
 
+# Automatically recognize if building on SunOS/Solaris
+ifeq ($(shell uname), SunOS)
+SUNOS:=1
+# SunOS uses UNIX setup too
+UNIX:=1
+endif
+
 # FreeBSD uses sdl11 instead of sdl
 ifdef FREEBSD
 SDL-CONFIG:=sdl11-config