[Daniel Shane] | I am trying to write a rule that will rebuild a tar.gz of a number of | directories when some of the files change. Here is an example of Makefile | that works with make : | | DIRS = project1 project2 | RESULT = $(foreach dir,$(DIR),$(dir).tar.gz) | | all: $(RESULT) | | $(RESULT): | tar xvf $@ ($subst .tar.gz,,$@) | | include tar_deps.mk | | tar_deps.mk: Makefile | for dir in $(DIRS); do \ | echo -n "$$f.tar.gz: " >> $@; \ | find $$f -type f -printf "%p " >> $@; \ | done; | | This uses a cleaver "include" make trick. When tar_deps gets overriten, make | will re-include it and re-scan the Makefile. | | Now when I use this with automake, it doesnt work because I cant seem to be | able to pass the "include tar_deps.mk" statement intact to the Makefile | since it is also a keywork of automake. Does anyone have an idea on how I | could work around this?
foreach, subst, and include are not portable, so I suggest you take all these rules out of your Makefile.am. Intead, you can create a file called GNUmakefile and fill it with all the above rules, plus `include Makefile'. This way if a user runs GNU make all the rules from GNUmakefile and Makefile will be used, otherwise only Makefile will be read. (Projects like fileutils, textutils, shellutils, autoconf, and bison, use a similar setup.) -- Alexandre Duret-Lutz
