Hi Paul :)
> Why doesn't it
> work? It doesn't work because GNU make actually caches the contents of
> directories as it reads them, for performance reasons.
I supposed that some caching was the cause, but for me was
reasonable that $wildcard will not expand if the new file wasn't
cached.
> If you make that file an explicit target, rather than a side-effect,
> _then_ it will work.
In the real makefile, it is an implicit target. I will see if I
can make explicit targets, because now all affected files are
implicit ones (well, they match something as path/* and the like).
Otherwise I'll stick to the $(shell) solution.
> >> Is this a bug or a feature?
> jb> Feature.
> Maybe, maybe not. But, not as straightforward as it seems at any rate :).
Interesting ;))))
Thanks a lot for your answer and explanation. Now I have things
clearer, Paul :))
Note that this is a generated Makefile, part of a bigger proyect
not yet released, but since it is GPL and it may be dumber than I
think, I attach it so you can see what is all about. Feel free to
ignore and feel free to criticize it ;)) Currently you cannot do
'make install' without doing before 'make all' due to the $(wildcard)
function issue, but I'll fix ASAP ;))
Ra�l
# *** Makefile *** Generated Makefile, PLEASE DON'T EDIT.
# ./0
#
# This is a *generated* Makefile, please don't edit ;))
# Copyright (C) 2002 Ra�l N��ez de Arenas Coronado
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation;
# either version 2 of the License,
# or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty
# of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# ('GPL') along with this program; if not, write to:
#
# Free Software Foundation, Inc.
# 59 Temple Place, Suite 330
# Boston, MA 02111-1307 USA
#
# Report bugs to <[EMAIL PROTECTED]>
#
.PHONY: all install help clean
.DELETE_ON_ERROR:
.SECONDARY:
.SUFFIXES:
.SUFFIXES:.c .o .h .d .a .so
.DEFAULT:;@:
# Convenience variables
override GOALS=
override XDEFS:=-DCONFDIR=\"/usr/local/etc/\" -DDATADIR=\"/usr/local/lib/vcinit/\"
override OBJECTS=$(sort $(patsubst %.c, %.o, $(wildcard src/*.c lib/*.c)))
override DEPENDS=$(sort $(patsubst %.c, %.d, $(wildcard src/*.c lib/*.c bin/*.c
sbin/*.c)))
# Goals to build
override GOALS+=$(if $(filter src/%.o, $(OBJECTS)),src/library.a)
override GOALS+=$(if $(filter lib/%.o, $(OBJECTS)),lib/libvcinit.a)
override GOALS+=$(if $(filter lib/%.o, $(OBJECTS)),lib/libvcinit.so)
override GOALS+=$(basename $(wildcard bin/*.c sbin/*.c))
all: $(GOALS)
# Misc functions for installation (David <[EMAIL PROTECTED]> and myself).
# This function install files to their proper location (just *files*),
# logging the names of those installed files in the process...
install_files=\
$(foreach filename,$(wildcard $(1)),{\
[ -d $(filename) ] || {\
cp -f $(filename) $(2) > /dev/null 2>&1 || {\
printf "Couldn't install file \"$(filename)\", aborting.\n";\
exit 1;\
};\
chmod $(3) $(2)$(notdir $(filename));\
printf "$(2)$(notdir $(filename))\n";\
};\
};)
# This function creates installation directories
makedir=\
if [ ! -z "$(1)" ];\
then\
[ -d "$(1)" ] || mkdir -m 755 -p "$(1)" > /dev/null 2>&1 || {\
printf "Cannot create directory \"$(1)\", aborting...\n";\
exit 1;\
};\
fi
install: all
@$(call makedir,/usr/local/)
@$(call makedir,/usr/local/bin/)
@$(call makedir,/usr/local/sbin/)
@$(call makedir,/usr/local/lib/)
@$(call makedir,/usr/local/man/man1)
@$(call makedir,/usr/local/man/man5)
@$(call makedir,/usr/local/man/man8)
@$(call makedir,/usr/local/info/)
@$(call makedir,/usr/local/doc/vcinit/)
@$(call makedir,/usr/local/etc/)
@$(call makedir,/usr/local/lib/vcinit/)
@$(call makedir,/usr/local/include/vcinit/)
@$(call install_files,$(filter bin/%, $(filter-out
bin/_%,$(GOALS))),/usr/local/bin/,555)
@$(call install_files,$(filter sbin/%, $(filter-out
sbin/_%,$(GOALS))),/usr/local/sbin/,555)
@$(call install_files,doc/*.1,/usr/local/man/,444)
@$(call install_files,doc/*.8,/usr/local/man/,444)
@$(call install_files,doc/*.5,/usr/local/man/,444)
@$(call install_files,doc/*.info,/usr/local/info/,444)
@$(call install_files,doc/*.html,/usr/local/doc/vcinit/,444)
@$(call install_files,doc/*.txt,/usr/local/doc/vcinit/,444)
@$(call install_files,include/*.h,/usr/local/include/vcinit/,444)
@$(call install_files,lib/*.h,/usr/local/include/vcinit/,444)
@$(call install_files,lib/libvcinit.a,/usr/local/lib/,444)
@$(call install_files,lib/libvcinit.so,/usr/local/lib/,555)
@if [ -e /usr/local/lib/libvcinit.so ] ;\
then \
ln -sf /usr/local/lib/libvcinit.so /usr/local/lib/libvcinit.so.1 ;\
printf "/usr/local/lib/libvcinit.so.1\n" ;\
fi
@$(foreach filename,$(wildcard conf/*), \
{ \
[ -f /usr/local/etc/$(notdir $(filename)) ] && \
mv -f /usr/local/etc/$(notdir $(filename)) \
/usr/local/etc/$(notdir $(filename))~ \
> /dev/null 2>&1;\
} || true ; )
@$(call install_files,conf/*,/usr/local/etc/,644)
@if [ -e data/Makefile ] ;\
then \
$(MAKE) -C data -f Makefile DATADIR=/usr/local/lib/vcinit/ ;\
else \
$(call install_files,data/*,/usr/local/lib/vcinit/,444) true ;\
fi
@rmdir -p \
/usr/local/ /usr/local/bin/ /usr/local/sbin/ \
/usr/local/man/man1 /usr/local/man/man8 /usr/local/man/man5
/usr/local/man/ \
/usr/local/info/ /usr/local/doc/vcinit/ /usr/local/etc/
/usr/local/lib/vcinit/ /usr/local/lib/ /usr/local/include/vcinit/ \
> /dev/null 2>&1 || true
help:
@printf "\n"
@printf " Run the command 'make <target>' for doing what you want ;)\n"
@printf " Those are the available make targets (default is 'all'):\n"
@printf "\n"
@printf " all - Builds the package\n"
@printf " install - Installs the package (building if necessary)\n"
@printf " clean - Cleans the build tree\n"
@printf " distclean - Cleans the build tree for distribution\n"
@printf " help - Shows this help\n"
@printf "\n"
clean:
@printf "Removing core files... " >&2 ; rm -f core bin/core sbin/core src/core
> /dev/null 2>&1 ; printf "done.\n" >&2
@printf "Removing object files... " >&2 ; rm -f $(OBJECTS) bin/*.o sbin/*.o >
/dev/null 2>&1 ; printf "done.\n" >&2
@printf "Removing project goals and dependencies... " >&2 ; rm -f $(GOALS)
$(DEPENDS) > /dev/null 2>&1 ; printf "done.\n" >&2
distclean: clean
@printf "Removing generated files... " >&2 ; rm -f Makefile debug.h >
/dev/null 2>&1 ; printf "done.\n" >&2
@printf "Removing empty directories... " >&2 ; rmdir * > /dev/null 2>&1 ;
printf "done.\n" >&2
# Clean and modify some variables
override IDIRS:=$(sort $(filter-out -I%, ))
override IDIRS:=$(patsubst %, -I%, src lib include bin sbin . $(IDIRS))
override LDIRS:=$(sort $(filter-out -L%, ))
override LDIRS:=$(patsubst %, -L%, $(LDIRS))
override LIBES:=$(sort $(filter lib%, libcrypt))
override LIBES:=$(patsubst lib%, -l%, $(LIBES))
override CDEFS:=$(sort $(filter-out -D%, ))
override CDEFS:=$(patsubst %, -D%, $(CDEFS))
## Flags ##
override CFLAGS+=$(IDIRS) $(CDEFS) $(XDEFS)
override CFLAGS+=-Wall -W $(sort ) -DNDEBUG -UTEST -O2
override CFLAGS+=-DPROJECT=\"vcinit\" -DVERSION=\"1.0rc9\"
override LDFLAGS+=$(LDIRS) $(LIBES) -s
## Implicit rules
src/%.o: src/%.c src/%.d Makefile
@printf "Compiling object '$(notdir $@)'\n" >&2
@/usr/bin/gcc $(CFLAGS) -MD -MP -DOBJNAME=\"$(basename $(notdir $@))\" -c -o
$@ $<
lib/%.o: lib/%.c lib/%.d Makefile
@printf "Compiling library object '$(notdir $@)'\n" >&2
@/usr/bin/gcc $(CFLAGS) -fPIC -DPIC -MD -MP -DOBJNAME=\"$(basename $(notdir
$@))\" -c -o $@ $<
bin/%.o: bin/%.c bin/%.d Makefile
@printf "Compiling binary '$(notdir $@)'\n" >&2
@/usr/bin/gcc $(CFLAGS) -MD -MP -DOBJNAME=\"$(basename $(notdir $@))\" -c -o
$@ $<
bin/%: bin/%.o $(filter %.a,$(GOALS))
@printf "Linking binary '$(notdir $@)'\n" >&2
@/usr/bin/gcc $(LDFLAGS) -o $@ $^
sbin/%.o: sbin/%.c sbin/%.d Makefile
@printf "Compiling system binary '$(notdir $@)'\n" >&2
@/usr/bin/gcc $(CFLAGS) -MD -MP -DOBJNAME=\"$(basename $(notdir $@))\" -c -o
$@ $<
sbin/%: sbin/%.o $(filter %.a,$(GOALS))
@printf "Linking system binary '$(notdir $@)'\n" >&2
@/usr/bin/gcc $(LDFLAGS) -o $@ $^
src/library.a: $(filter src/%,$(OBJECTS))
@printf "Creating private library\n" >&2
@/usr/bin/ar rcsu $@ $^
lib/libvcinit.a: $(filter lib/%,$(OBJECTS))
@printf "Creating static library '$(notdir $@)'\n" >&2
@/usr/bin/ar rcsu $@ $^
lib/libvcinit.so: $(filter lib/%,$(OBJECTS))
@printf "Creating shared library '$(notdir $@)'\n" >&2
@/usr/bin/gcc $(LDFLAGS) -o $@ -shared -Wl,-soname -Wl,libvcinit.so.1 $^
Makefile:;@:
## Dependencies
ifneq ($(DEPENDS),)
-include $(DEPENDS)
endif
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