Issue an explicit warning if the docs can't be built at 'make dist'

[platform/upstream/libvorbis.git] / doc / Makefile.am

diff --git a/doc/Makefile.am b/doc/Makefile.am
index bf3adbf..6ad6aab 100644 (file)
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -105,6 +105,7 @@ $(BUILDDIR)/draft-rtp.xml: draft-kerr-avt-vorbis-rtp-03.txt
 # cat $< | sed 's/\f//g' | sed 's/</\&lt;/g' | sed 's/>/\&gt;/g' > $@
 
 # explicit rules for generating docs
+if BUILD_DOCS
 Vorbis_I_spec.html: $(SPEC_PNG_BUILD) $(BUILDDIR)/Vorbis_I_spec.xml
        cd build; xsltproc --xinclude --output Vorbis_I_spec.html spec-html.xsl Vorbis_I_spec.xml && mv $@ ..
 
@@ -117,6 +118,15 @@ Vorbis_I_spec.pdf: Vorbis_I_spec.fo $(SPEC_PNG_BUILD) $(SPEC_PDF_BUILD)
        cd build; pdfxmltex --interaction nonstopmode spec.fo
        rm build/spec.fo
        mv build/spec.pdf $@
+else
+Vorbis_I_spec.html: NO_DOCS_ERROR
+Vorbis_I_spec.pdf: NO_DOCS_ERROR
+NO_DOCS_ERROR:
+       @echo
+       @echo "*** Documentation has not been built! ***"
+       @echo "Try re-running after passing --enable-docs to configure."
+       @echo
+endif
 
 # clean up build dir
 clean-local: