manpage build: fail early when xmlto is not available
When we try to build manpages with xmlto and sed, but xmlto is
missing fail at the xmlto stage. Otherwise, one may run `cd doc;
make' and miss the warnings like:
xmlto: not found
sed: hg.1: No such file or directory
and end up with empty files installed as manpages.
SOURCES=$(wildcard *.[0-9].txt)
MAN=$(SOURCES:%.txt=%)
HTML=$(SOURCES:%.txt=%.html)
PREFIX=/usr/local
MANDIR=$(PREFIX)/share/man
INSTALL=install -c -m 644
PYTHON=python
ASCIIDOC=asciidoc
all: man html
man: $(MAN)
html: $(HTML)
hg.1.txt: hg.1.gendoc.txt
touch hg.1.txt
hg.1.gendoc.txt: ../mercurial/commands.py ../mercurial/help.py
${PYTHON} gendoc.py > $@
%: %.xml
xmlto man $*.xml && \
sed -e 's/^\.hg/\\\&.hg/' $* > $*~ && \
mv $*~ $*
%.xml: %.txt
$(ASCIIDOC) -d manpage -b docbook $*.txt
%.html: %.txt
$(ASCIIDOC) -b html4 $*.txt || $(ASCIIDOC) -b html $*.txt
MANIFEST: man html
# tracked files are already in the main MANIFEST
$(RM) $@
for i in $(MAN) $(HTML) hg.1.gendoc.txt; do \
echo "doc/$$i" >> $@ ; \
done
install: man
for i in $(MAN) ; do \
subdir=`echo $$i | sed -n 's/..*\.\([0-9]\)$$/man\1/p'` ; \
mkdir -p $(DESTDIR)$(MANDIR)/$$subdir ; \
$(INSTALL) $$i $(DESTDIR)$(MANDIR)/$$subdir ; \
done
clean:
$(RM) $(MAN) $(MAN:%=%.xml) $(MAN:%=%.html) *.[0-9].gendoc.txt MANIFEST