Commit
ab6f56debf made the change to allow building man pages even when disabled
with ./configure --disable-manpages. This works fine, as long as xsltproc is
present. If xsltproc is not present, the command to build a man page (obviously)
fails. Unfortnately it fails with a cryptic message '-o not found', because
$(XSLTPROC) is empty. Add a fallback, to use 'xsltproc' is $(XSLTPROC) is not
defined. This way we get a nice message:
make: xsltproc: Command not found
--stringparam systemd.version $(VERSION) \
--path '$(builddir)/man:$(srcdir)/man'
+XSLT = $(if $(XSLTPROC), $(XSLTPROC), xsltproc)
XSLTPROC_PROCESS_MAN = \
- $(AM_V_XSLT)$(XSLTPROC) -o $@ $(XSLTPROC_FLAGS) $(srcdir)/man/custom-man.xsl $<
+ $(AM_V_XSLT)$(XSLT) -o $@ $(XSLTPROC_FLAGS) $(srcdir)/man/custom-man.xsl $<
XSLTPROC_PROCESS_HTML = \
- $(AM_V_XSLT)$(XSLTPROC) -o $@ $(XSLTPROC_FLAGS) $(srcdir)/man/custom-html.xsl $<
+ $(AM_V_XSLT)$(XSLT) -o $@ $(XSLTPROC_FLAGS) $(srcdir)/man/custom-html.xsl $<
man/%.1: man/%.xml man/custom-man.xsl man/custom-entities.ent
$(XSLTPROC_PROCESS_MAN)