diff options
| author | Jim Meyering <meyering@redhat.com> | 2012-09-09 19:27:25 +0200 |
|---|---|---|
| committer | Jim Meyering <meyering@redhat.com> | 2012-09-10 09:32:50 +0200 |
| commit | 57da212a95054cc230ffb00f38ea655c798926f8 (patch) | |
| tree | e8d689d860f0fbc1197ae7654ffb87c5db895f3f | |
| parent | e571cfd9c7f035886182100b7a5e27ad7d48f1ca (diff) | |
| download | coreutils-57da212a95054cc230ffb00f38ea655c798926f8.tar.xz | |
build: do not require help2man at build-from-tarball time
But do retain full dependencies when building from a git clone.
We do this by converting the full dependency (of the .1 file on
the binary we run with --help) into a dependency on the .c file.
* Makefile.am (do-not-require-help2man): New rule.
(dist-hook): depend on it.
| -rw-r--r-- | Makefile.am | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/Makefile.am b/Makefile.am index 4999ca14d..384b9e937 100644 --- a/Makefile.am +++ b/Makefile.am @@ -92,11 +92,29 @@ BUILT_SOURCES = .version .version: $(AM_V_GEN)echo $(VERSION) > $@-t && mv $@-t $@ +# In general, we run help2man to build a man page from the binary's --help +# output, but when building from a just-unpacked distribution tarball, we +# must not do that, since help2man uses perl. We don't want to depend on +# perl in that case. In general, the .1 file does indeed depend on the +# binary. I.e., for cat, we have this Makefile dependency: +# man/cat.1: src/cat +# That means that once we build src/cat, we would trigger the .x.1 +# rule which runs help2man. The trick is simply to change the RHS to +# "src/cat.c" in the $(distdir) that we're about to tar and compress. +# Also handle the three exceptions corresponding to the three binaries +# for which there is no like-named .c file: dir, vdir, ginstall. +.PHONY: do-not-require-help2man +do-not-require-help2man: + perl -pi -e 's,^(man/.+?\.1:\s*src/.+?)$$,$$1.c,;' \ + -e 's,^(man/.+?\.1:\s*src)/ginstall\.c$$,$$1/install.c,;' \ + -e 's,^(man/.+?\.1:\s*src)/v?dir\.c$$,$$1/ls.c,;' \ + $(distdir)/Makefile.in + # Arrange so that .tarball-version appears only in the distribution # tarball, and never in a checked-out repository. # The perl substitution is to change some key uses of "rm" to "/bin/rm". # See the rm_subst comment for details. -dist-hook: gen-ChangeLog +dist-hook: gen-ChangeLog do-not-require-help2man $(AM_V_GEN)echo $(VERSION) > $(distdir)/.tarball-version $(AM_V_at)perl -pi -e '$(rm_subst)' $(distdir)/Makefile.in |