build: Add --disable-manpages configure option

It's not enough to check for xsltproc - the system may not have the docbook stylesheets installed. This patch also allows builders to override the generation/installation of manpages entirely; for example, manpages are of no use for embedded systems, so it's better to not even waste the power building them.

---
 configure.ac    |   10 ++++++++--
 man/Makefile.am |    4 ++--
 2 files changed, 10 insertions(+), 4 deletions(-)

From: Colin Walters <[email protected]>
Date: Wed, 9 Jan 2013 19:35:05 -0500
Subject: [PATCH] build: Add --disable-manpages configure option

It's not enough to check for xsltproc - the system may not have the docbook stylesheets installed. This patch also allows builders to override the generation/installation of manpages entirely; for example, manpages are of no use for embedded systems, so it's better to not even waste the power building them.

This is equivalent to the code in systemd and kmod's configure.ac.

---
 configure.ac    |   10 ++++++++--
 man/Makefile.am |    4 ++--
 2 files changed, 10 insertions(+), 4 deletions(-)

index 0e6db86..273b9b8 100644
@@ -226,8 +226,14 @@ if test "x$HAVE_LIBUDEV" = xyes; then
 fi
 AM_CONDITIONAL(HAVE_LIBUDEV, [test "x$HAVE_LIBUDEV" = xyes])
 
-AC_PATH_PROG(XSLTPROC, xsltproc)
-AM_CONDITIONAL([HAVE_XSLTPROC], [test "x$XSLTPROC" != "x"])
+AC_ARG_ENABLE([manpages],
+        AS_HELP_STRING([--disable-manpages], [disable manpages @<:@default=enabled@:>@]),
+	[], enable_manpages=yes)
+AM_CONDITIONAL([BUILD_MANPAGES], [test "x$enable_manpages" = "xyes"])
+AC_PATH_PROG([XSLTPROC], [xsltproc], [no])
+AS_IF([test "x$XSLTPROC" = "xno" && test "x$enable_manpages" = "xyes"], [
+	AC_MSG_ERROR([xsltproc command not found, try ./configure --disable-manpages])
+])
 
 if test "x$INTEL" != "xno" -o "x$RADEON" != "xno" -o "x$NOUVEAU" != "xno" -o "x$OMAP" != "xno"; then
     # Check for atomic intrinsics

index 32acd07..42c3616 100644
@@ -22,7 +22,7 @@ CLEANFILES =
 EXTRA_DIST =
 man_MANS =
 
-if HAVE_XSLTPROC
+if BUILD_MANPAGES
 
 CLEANFILES += $(MANPAGES) $(MANPAGES_ALIASES)
 EXTRA_DIST += $(MANPAGES) $(MANPAGES_ALIASES) $(XML_FILES)

@@ -51,4 +51,4 @@ XSLTPROC_PROCESS_MAN = \
 %.7: %.xml
 	$(XSLTPROC_PROCESS_MAN)
 
-endif # HAVE_XSLTPROC
+endif # BUILD_MANPAGES

1.7.1

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Hi Colin

Sorry for the delay. I picked this up and integrated it into a rewrite of the man-pages build-instructions. Just sent it today "man: fix manpage build instructions"

Thanks
David