support make goals after initial {'', dist, data}clean goal(s)

[notmuch] / Makefile

diff --git a/Makefile b/Makefile
index ff654e11e7944624d55aaa3ab86c98028f35bfe3..d2010fe48669e549cc4c0865362c3f5103a349ca 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -1,24 +1,71 @@
-PROGS=notmuch
+# We want the all target to be the implicit target (if no target is
+# given explicitly on the command line) so mention it first.
+all:
 
-MYCFLAGS=-Wall -O0 -g `pkg-config --cflags glib-2.0 talloc`
-MYCXXFLAGS=$(MYCFLAGS) `xapian-config --cxxflags`
+# Sub-directory Makefile.local fragments can append to these variables
+# to have directory-specific cflags as necessary.
 
-MYLDFLAGS=`pkg-config --libs glib-2.0 talloc` `xapian-config --libs`
+extra_cflags :=
+extra_cxxflags :=
 
-all: $(PROGS)
+# Get settings from the output of configure by running it to generate
+# Makefile.config if it doesn't exist yet.
 
-%.o: %.cc
-       $(CXX) -c $(CXXFLAGS) $(MYCXXFLAGS) $< -o $@
+# If Makefile.config doesn't exist, then srcdir won't be
+# set. Conditionally set it (assuming a plain srcdir build) so that
+# the rule to generate Makefile.config can actually work.
+srcdir ?= .
 
-%.o: %.c
-       $(CC) -c $(CFLAGS) $(MYCFLAGS) $< -o $@
+include Makefile.config
 
-notmuch: notmuch.o database.o date.o message.o message-file.o query.o xutil.o
-       $(CC) $(MYLDFLAGS) $^ -o $@
+# We make all targets depend on the Makefiles themselves.
+global_deps = Makefile Makefile.config Makefile.local \
+       $(subdirs:%=%/Makefile) $(subdirs:%=%/Makefile.local)
 
-Makefile.dep: *.c *.cc
-       $(CC) -M $(CPPFLAGS) $(MYCFLAGS) $^ > $@
--include Makefile.dep
+INCLUDE_MORE := yes
+ifneq ($(filter clean distclean dataclean, $(word 1, $(MAKECMDGOALS))),)
+CLEAN_GOAL := $(word 1, $(MAKECMDGOALS))
 
-clean:
-       rm -f $(PROGS) *.o Makefile.dep
+# If there are more goals following CLEAN_GOAL, run $(MAKE)s in parts.
+ifneq ($(word 2, $(MAKECMDGOALS)),)
+INCLUDE_MORE := no
+FOLLOWING_GOALS := $(wordlist 2, 99, $(MAKECMDGOALS))
+
+.PHONY: $(FOLLOWING_GOALS) make_in_parts
+$(FOLLOWING_GOALS):
+       @true
+$(CLEAN_GOAL): make_in_parts
+make_in_parts:
+       $(MAKE) $(CLEAN_GOAL)
+       $(MAKE) $(FOLLOWING_GOALS) configure_options="$(configure_options)"
+endif
+
+else
+CLEAN_GOAL :=
+endif
+
+# Potentially speedup make clean, distclean and dataclean ; avoid
+# re-creating Makefile.config if it exists but configure is newer.
+ifneq ($(CLEAN_GOAL),)
+Makefile.config: | $(srcdir)/configure
+else
+Makefile.config: $(srcdir)/configure
+endif
+ifeq ($(configure_options),)
+       @echo ""
+       @echo "Note: Calling ./configure with no command-line arguments. This is often fine,"
+       @echo "      but if you want to specify any arguments (such as an alternate prefix"
+       @echo "      into which to install), call ./configure explicitly and then make again."
+       @echo "      See \"./configure --help\" for more details."
+       @echo ""
+endif
+       $(srcdir)/configure $(configure_options)
+
+ifeq ($(INCLUDE_MORE),yes)
+# runtime variable definitions available in all subdirs
+include $(srcdir)/Makefile.global
+# Finally, include all of the Makefile.local fragments where all the
+# real work is done.
+
+include $(subdirs:%=%/Makefile.local) Makefile.local
+endif