(svn r4149) -Codechange: [OSX] rewrite of how universal binaries are compiled

	Now OSX stores object files in .OSX and instead of making FAT object files, there are one for each architecture
	Each architecture got their own targets to make a non-FAT binary and in the end, lipo will merge them into one binary

	It's now possible to select which architectures you want to support by defining OTTD_PPC, OTTD_PPC970 (G5) and/or OTTD_i386
	All combos are supported. UNIVERSAL_BINARY and TRIPLE_BINARY can still be used even though it's possible to gain the same result by using the new flags
	Making a universal build when you already got part of it compiled (say the PPC part), it will reuse it and only compile the i386 part to save time
	Note: in some cases when you switch flags, you risk that openttd is not updated. Delete it and try again. The Makefile can't solve this except if it forces linking each time

	This fixes: FS#87 universal binary building borked in 0.4.7
	Now universal binaries work on OSX 10.3.9 again

	Building universal binaries no longer needs to store flags in Makefile.config as the new design makes it possible to figure everything out automatically

1 files changed, 12 insertions, 13 deletions

diff --git a/Makefile b/Makefile
index d732b971c..5fb9a1eb7 100644
--- a/Makefile
+++ b/Makefile
@@ -108,6 +108,8 @@
 #
 # UNIVERSAL_BINARY: builds a universal binary for OSX. Make sure you got both PPC and x86 libs. Only works with GCC 4 or newer
 # TRIPLE_BINARY: builds a universal binary with the addition of code optimised for G5 (which means a total of 3 binaries in one file)
+# OTTD_PPC, OTTD_PPC970, OTTD_i386: compile for target architecture.
+#    Multiple flags can be used so OTTD_PPC:=1 OTTD_i386:=1 produces the same result as UNIVERSAL_BINARY
 #
 # JAGUAR: Crosscompiling for OSX 1.2.8 (codenamed Jaguar). Only works if OSX is defined too. Only works with GCC 4 or newer
 #	This can be changed to any PPC version of OSX by changing the ppc flags in Makefile.config
@@ -130,7 +132,7 @@
 
 # Makefile version tag
 # it checks if the version tag in Makefile.config is the same and force update outdated config files
-MAKEFILE_VERSION:=9
+MAKEFILE_VERSION:=10
 
 # CONFIG_WRITER has to be found even for manual configuration
 CONFIG_WRITER=makefiledir/Makefile.config_writer
@@ -345,11 +347,6 @@ endif
 ifdef OSX
 # these compilerflags makes the app run as fast as possible without making the app unstable. It works on G3 or newer
 BASECFLAGS += -O3 -funroll-loops -fsched-interblock -falign-loops=16 -falign-jumps=16 -falign-functions=16 -falign-jumps-max-skip=15 -falign-loops-max-skip=15 -mdynamic-no-pic
-ifdef IS_G5
-ifndef UNIVERSAL_BINARY
-BASECFLAGS += $(G5_FLAGS)
-endif
-endif
 else
 ifdef MORPHOS
 BASECFLAGS += -I/gg/os-include -O2 -noixemul -fstrict-aliasing -fexpensive-optimizations
@@ -830,9 +827,12 @@ $(ENDIAN_CHECK): endian_check.c
 	$(Q)$(CC_HOST) $(CFLAGS_HOST) $(CDEFS) $< -o $@
 
 
+ifndef NATIVE_OSX
+# OSX links in os/macosx/Makefile to handle universal binaries better
 $(TTD): $(OBJS) $(MAKE_CONFIG)
 	@echo '===> Linking $@'
 	$(Q)$(CC) $(LDFLAGS) $(TTDLDFLAGS) $(OBJS) $(LIBS) -o $@
+endif
 
 $(STRGEN): strgen/strgen.c endian_host.h
 	@echo '===> Compiling and Linking $@'
@@ -899,7 +899,7 @@ FORCE:
 clean:
 	@echo '===> Cleaning up'
 # endian.h is out-dated and no longer in use, so it can be removed soon
-	$(Q)rm -rf .deps *~ $(TTD) $(STRGEN) core table/strings.h $(LANGS) $(OBJS) $(OSX_MIDI_PLAYER_FILE) endian.h endian_host.h endian_target.h $(ENDIAN_CHECK)
+	$(Q)rm -rf .deps *~ $(TTD) $(STRGEN) core table/strings.h $(LANGS) $(OBJS) $(OSX_MIDI_PLAYER_FILE) endian.h endian_host.h endian_target.h $(ENDIAN_CHECK) .OSX
 
 mrproper: clean
 	$(Q)rm -rf $(MAKE_CONFIG)
@@ -1006,20 +1006,19 @@ endif
 	$(Q)$(CC) $(OBJCFLAGS) $(CDEFS) -MM $< | sed 's#^$(@F:%.d=%.o):#$@ $(@:.deps/%.d=%.o):#' > $@
 
 
-ifndef TRIPLE_BINARY
-# building tripple binary object files is handled in os/macosx/Makefile
-# TARGET_CPU_FLAGS is used to set target CPUs in OSX universal binaries. It's empty for all other builds
+ifndef NATIVE_OSX
+# OSX uses os/macosx/Makefile to compile files
 %.o: %.c $(MAKE_CONFIG)
 	@echo '===> Compiling $<'
-	$(Q)$(CC) $(TARGET_CPU_FLAGS) $(CFLAGS) $(CDEFS) -c -o $@ $<
+	$(Q)$(CC) $(CFLAGS) $(CDEFS) -c -o $@ $<
 
 %.o: %.cpp  $(MAKE_CONFIG)
 	@echo '===> Compiling $<'
-	$(Q)$(CXX) $(TARGET_CPU_FLAGS) $(CFLAGS) $(CDEFS) -c -o $@ $<
+	$(Q)$(CXX) $(CFLAGS) $(CDEFS) -c -o $@ $<
 
 %.o: %.m  $(MAKE_CONFIG)
 	@echo '===> Compiling $<'
-	$(Q)$(CC) $(TARGET_CPU_FLAGS) $(CFLAGS) $(CDEFS) -c -o $@ $<
+	$(Q)$(CC) $(CFLAGS) $(CDEFS) -c -o $@ $<
 endif
 
 %.o: %.rc