X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=mk%2Fsub-makefile.mk;h=caeefa6c4acc5f2a80ba05c9c695b44b9759dc44;hb=2fda738875042f7d2339f18b6c8b43ef7901bc94;hp=031d62a1b702ac7121b273cca678da01e4dd4400;hpb=c40387edc47e28241cc4f52b0fdf49e60bc234c6;p=ghc-hetmet.git

diff --git a/mk/sub-makefile.mk b/mk/sub-makefile.mk
index 031d62a..caeefa6 100644
--- a/mk/sub-makefile.mk
+++ b/mk/sub-makefile.mk
@@ -16,6 +16,22 @@ TOPMAKE = $(MAKE) -C $(TOP)
 
 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:
 
@@ -24,9 +40,18 @@ 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