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Makefile: Magic silent rules.

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Use the facilities of GNU make to create a magic function that will
on the first invocation print a description of how to enable verbose
compile lines and then print the quiet rule.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Carl Worth <cworth@cworth.org>
Cc: Mikhail Gusarov <dottedmag@dottedmag.net>

[ickle: Rebased, and duplicate command string eliminated.]
[ickle: Fixed verbose bug pointed out by Mikhail]
This commit is contained in:
Chris Wilson 2009-11-21 20:32:20 +00:00 committed by Carl Worth
parent 5d56e931b9
commit 530df68258
3 changed files with 23 additions and 6 deletions
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23
Makefile
View file

@ -2,6 +2,10 @@
WARN_FLAGS=-Wall -Wextra -Wmissing-declarations -Wwrite-strings -Wswitch-enum
CFLAGS=-O2
# Additional programs that are used during the compilation process.
EMACS ?= emacs
GZIP ?= gzip
# Additional flags that we will append to whatever the user set.
# These aren't intended for the user to manipulate.
extra_cflags := $(shell pkg-config --cflags glib-2.0 gmime-2.4 talloc)
@ -31,14 +35,27 @@ include lib/Makefile.local
# And get user settings from the output of configure
include Makefile.config
# The user has not set any verbosity, default to quiet mode and inform the
# user how to enable verbose compiles.
ifeq ($(V),)
quiet_DOC := "Use \"$(MAKE) V=1\" to see the verbose compile lines.\n"
quiet = @echo $(quiet_DOC)$(eval quiet_DOC:=)" $1 $@"; $($1)
endif
# The user has explicitly enabled quiet compilation.
ifeq ($(V),0)
quiet = @echo " $1 $@"; $($1)
endif
# Otherwise, print the full command line.
quiet ?= $($1)
%.o: %.cc $(all_deps)
$(CXX) -c $(CXXFLAGS) $< -o $@
$(call quiet,CXX) -c $(CXXFLAGS) $< -o $@
%.o: %.c $(all_deps)
$(CC) -c $(CFLAGS) $< -o $@
$(call quiet,CC) -c $(CFLAGS) $< -o $@
%.elc: %.el
emacs -batch -f batch-byte-compile $<
$(call quiet,EMACS) -batch -f batch-byte-compile $<
.deps/%.d: %.c $(all_deps)
@set -e; rm -f $@; mkdir -p $$(dirname $@) ; \

4
Makefile.local
View file

@ -20,10 +20,10 @@ notmuch_client_srcs = \
notmuch_client_modules = $(notmuch_client_srcs:.c=.o)
notmuch: $(notmuch_client_modules) lib/notmuch.a
$(CXX) $^ $(LDFLAGS) -o $@
$(call quiet,CXX) $^ $(LDFLAGS) -o $@
notmuch.1.gz: notmuch.1
gzip --stdout notmuch.1 > notmuch.1.gz
$(call quiet,GZIP) --stdout $^ > $@
install: all notmuch.1.gz
for d in $(DESTDIR)$(prefix)/bin/ $(DESTDIR)$(prefix)/share/man/man1 \

2
lib/Makefile.local
View file

@ -18,7 +18,7 @@ libnotmuch_cxx_srcs = \
libnotmuch_modules = $(libnotmuch_c_srcs:.c=.o) $(libnotmuch_cxx_srcs:.cc=.o)
$(dir)/notmuch.a: $(libnotmuch_modules)
$(AR) rcs $@ $^
$(call quiet,AR) rcs $@ $^
SRCS := $(SRCS) $(libnotmuch_c_srcs) $(libnotmuch_cxx_srcs)
CLEAN := $(CLEAN) $(libnotmuch_modules) $(dir)/notmuch.a