%% Bill Moseley <[EMAIL PROTECTED]> writes:
bm> The problem I'm having is getting make to only run the program *once*.
bm> I tried some rules like this:
bm> html: $(version_file)
bm> cd $(srcdir)/../doc && bin/build
bm> CHANGES.html: $(pod_dir)/CHANGES.pod
bm> $(MAKE) html
bm> INSTALL.html: $(pod_dir)/INSTALL.pod
bm> $(MAKE) html
bm> API.html: $(top_srcdir)/perl/API.pm
bm> $(MAKE) html
bm> The above does not work, of course, because "make html" gets run
bm> over and over for each target, instead of just once.
You need a stamp file: a single file that represents the last time the
build was performed. Just write it like this:
all: .html-stamp
.html-stamp: $(version_file) $(pod_dir)/CHANGES.pod \
$(pod_dir)/INSTALL.pod $(top_srcdir)/perl/API.pm
cd $(srcdir)/../doc && bin/build
@touch .html-stamp
No need for an extra level of make recursion.
--
-------------------------------------------------------------------------------
Paul D. Smith <[EMAIL PROTECTED]> Find some GNU make tips at:
http://www.gnu.org http://make.paulandlesley.org
"Please remain calm...I may be mad, but I am a professional." --Mad Scientist
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