-RtsMessages_CC_OPTS += -DProjectVersion=\"$(ProjectVersion)\"
-RtsFlags_CC_OPTS += -DProjectVersion=\"$(ProjectVersion)\"
-RtsFlags_CC_OPTS += -DRtsWay=\"rts$(_way)\"
-RtsFlags_CC_OPTS += -DHostPlatform=\"$(HOSTPLATFORM)\"
-RtsFlags_CC_OPTS += -DBuildPlatform=\"$(BUILDPLATFORM)\"
-RtsFlags_CC_OPTS += -DTargetPlatform=\"$(TARGETPLATFORM)\"
-RtsFlags_CC_OPTS += -DGhcUnregisterised=\"$(GhcUnregisterised)\"
-RtsFlags_CC_OPTS += -DGhcEnableTablesNextToCode=\"$(GhcEnableTablesNextToCode)\"
+# Mac OS X: make sure we compile for the right OS version
+SRC_CC_OPTS += $(MACOSX_DEPLOYMENT_CC_OPTS)
+SRC_HC_OPTS += $(addprefix -optc, $(MACOSX_DEPLOYMENT_CC_OPTS))
+LIB_LD_OPTS += $(addprefix -optl, $(MACOSX_DEPLOYMENT_LD_OPTS))
+
+# XXX DQ is now the same on all platforms, so get rid of it
+DQ = \"
+
+# If Main.c is built with optimisation then the SEH exception stuff on
+# Windows gets confused.
+# This has to be in HC rather than CC opts, as otherwise there's a
+# -optc-O2 that comes after it.
+Main_HC_OPTS += -optc-O0
+
+RtsMessages_CC_OPTS += -DProjectVersion=$(DQ)$(ProjectVersion)$(DQ)
+RtsUtils_CC_OPTS += -DProjectVersion=$(DQ)$(ProjectVersion)$(DQ)
+RtsUtils_CC_OPTS += -DRtsWay=$(DQ)rts$(_way)$(DQ)
+RtsUtils_CC_OPTS += -DHostPlatform=$(DQ)$(HOSTPLATFORM)$(DQ)
+RtsUtils_CC_OPTS += -DBuildPlatform=$(DQ)$(BUILDPLATFORM)$(DQ)
+RtsUtils_CC_OPTS += -DTargetPlatform=$(DQ)$(TARGETPLATFORM)$(DQ)
+RtsUtils_CC_OPTS += -DGhcUnregisterised=$(DQ)$(GhcUnregisterised)$(DQ)
+RtsUtils_CC_OPTS += -DGhcEnableTablesNextToCode=$(DQ)$(GhcEnableTablesNextToCode)$(DQ)
+
+# ffi.h triggers prototype warnings, so disable them here:
+Interpreter_CC_OPTS += -Wno-strict-prototypes
+Adjustor_CC_OPTS += -Wno-strict-prototypes
+sm/Storage_CC_OPTS += -Wno-strict-prototypes
+
+StgCRun_CC_OPTS += -w
+Typeable_CC_OPTS += -w
+RetainerProfile_CC_OPTS += -w
+sm/Compact_CC_OPTS += -w
+# On Windows:
+win32/ConsoleHandler_CC_OPTS += -w
+win32/ThrIOManager_CC_OPTS += -w
+win32/Ticker_CC_OPTS += -w
+# The above warning supression flags are a temporary kludge.
+# While working on this module you are encouraged to remove it and fix
+# any warnings in the module. See
+# http://hackage.haskell.org/trac/ghc/wiki/WorkingConventions#Warnings
+# for details