X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=blobdiff_plain;f=mk%2Fsub-makefile.mk;h=caeefa6c4acc5f2a80ba05c9c695b44b9759dc44;hp=1d41bd101a94c622e951c90fc95662d24d615c13;hb=a0c8fa4159e95be94474dd18b21e6c5fc35362ae;hpb=61ef1764bf342f90480602770b43ec3ae768f7f1

diff --git a/mk/sub-makefile.mk b/mk/sub-makefile.mk
index 1d41bd1..caeefa6 100644
--- a/mk/sub-makefile.mk
+++ b/mk/sub-makefile.mk
@@ -14,21 +14,44 @@
 
 TOPMAKE = $(MAKE) -C $(TOP)
 
-default :
-	+$(TOPMAKE) all_$(dir)
+default: all
+
+fast: all
+
+FAST_MAKE_OPTS =\
+  $(dir)_dist_NO_BUILD_DEPS=YES \
+  $(dir)_dist-boot_NO_BUILD_DEPS=YES \
+  $(dir)_dist-install_NO_BUILD_DEPS=YES \
+  OMIT_PHASE_1=YES OMIT_PHASE_2=YES OMIT_PHASE_3=YES
+
+ifneq "$(filter fast,$(MAKECMDGOALS))" ""
+EXTRA_MAKE_OPTS += $(FAST_MAKE_OPTS)
+else
+ifeq "$(FAST)" "YES"
+EXTRA_MAKE_OPTS += $(FAST_MAKE_OPTS)
+endif
+endif
 
 # We must not execute multiple recursive invocations of make in parallel.
 .NOTPARALLEL:
 
-# all comes first, we want it to be the default target
 STD_TARGETS = all clean distclean maintainer_clean install html ps pdf
 
 # The + tells make that we're recursively invoking make, otherwise 'make -j2'
 # goes wrong.
 $(STD_TARGETS): 
-	+$(TOPMAKE) $@_$(dir)
+	+$(TOPMAKE) $@_$(dir) $(EXTRA_MAKE_OPTS)
 
-OTHERTARGETS=$(filter-out $(STD_TARGETS) $(SPEC_TARGETS),$(MAKECMDGOALS))
+OTHERTARGETS=$(filter-out fast help $(STD_TARGETS) $(SPEC_TARGETS),$(MAKECMDGOALS))
 .PHONY: $(OTHERTARGETS)
 $(OTHERTARGETS):
-	+$(TOPMAKE) $(dir)/$@
+	+$(TOPMAKE) $(dir)/$@ $(EXTRA_MAKE_OPTS)
+
+.PHONY: help
+help : sub-help
+
+.PHONY: sub-help
+sub-help :
+	@echo "You are in subdirectory \"$(dir)\"."
+	@echo "Useful targets in this directory:"
+	@cat $(TOP)/SUBMAKEHELP