man, configure.ac: Only generate man pages if we can do it offline

Instead of relying on downloading the stylesheet from the Internet for
generating man pages, only generate them if the stylesheet is available
locally.

Signed-off-by: Jonas Ådahl <jadahl@gmail.com>

diff --git a/configure.ac b/configure.ac
index 0d842e1..c584439 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -76,6 +76,20 @@ fi
 AC_PATH_PROG(XSLTPROC, xsltproc)
 AM_CONDITIONAL([HAVE_XSLTPROC], [test "x$XSLTPROC" != "x"])
 
+AC_MSG_CHECKING([for docbook manpages stylesheet])
+MANPAGES_STYLESHEET=http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl
+AC_PATH_PROGS_FEATURE_CHECK([XSLTPROC_TMP], [xsltproc],
+                           AS_IF([`"$ac_path_XSLTPROC_TMP" --nonet "$MANPAGES_STYLESHEET" > /dev/null 2>&1`],
+                                 [HAVE_MANPAGES_STYLESHEET=yes]))
+if test "x$HAVE_MANPAGES_STYLESHEET" = "xyes"; then
+       AM_CONDITIONAL([HAVE_MANPAGES_STYLESHEET], true)
+       AC_SUBST(MANPAGES_STYLESHEET)
+       AC_MSG_RESULT([yes])
+else
+       AM_CONDITIONAL([HAVE_MANPAGES_STYLESHEET], false)
+       AC_MSG_RESULT([no])
+fi
+
 AM_CONDITIONAL(BUILD_DOCS, [test x$enable_documentation = xyes])
 if test "x$enable_documentation" = "xyes"; then
        AC_PATH_PROG(DOXYGEN, doxygen)

diff --git a/doc/man/Makefile.am b/doc/man/Makefile.am
index a6a5072..1407953 100644 (file)
--- a/doc/man/Makefile.am
+++ b/doc/man/Makefile.am
@@ -16,6 +16,7 @@ EXTRA_DIST =
 man_MANS =
 
 if HAVE_XSLTPROC
+if HAVE_MANPAGES_STYLESHEET
 
 CLEANFILES += $(MANPAGES) $(MANPAGES_ALIASES)
 EXTRA_DIST += $(MANPAGES) $(MANPAGES_ALIASES) $(XML_FILES)
@@ -25,11 +26,12 @@ XSLTPROC_FLAGS = \
        --stringparam man.authors.section.enabled 0 \
        --stringparam man.copyright.section.enabled 0 \
        --stringparam funcsynopsis.style ansi \
-       --stringparam man.output.quietly 1
+       --stringparam man.output.quietly 1 \
+       --nonet
 
 XSLTPROC_PROCESS_MAN = \
        $(AM_V_GEN)$(MKDIR_P) $(dir $@) && \
-       $(XSLTPROC) -o $@ $(XSLTPROC_FLAGS) http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl $< && \
+       $(XSLTPROC) -o $@ $(XSLTPROC_FLAGS) $(MANPAGES_STYLESHEET) $< && \
        $(SED) -i -e 's/^\.so \(.*\)\.\(.\)$$/\.so man\2\/\1\.\2/' $(MANPAGES_ALIASES)
 
 %.1: %.xml
@@ -46,4 +48,5 @@ XSLTPROC_PROCESS_MAN = \
 
 wl_display_connect_to_fd.3: wl_display_connect.3
 
+endif # HAVE_MANPAGES_STYLESHEET
 endif # HAVE_XSLTPROC