[ptxdist] [PATCH] host-expat: build without docbook

[Roland Hieber <r.hieber@pengutronix.de>]

docbook is only used to generate the man pages, which we don't use.
Disable it to prevent errors in the prepare stage when bulding on Debian
stretch and docbook-utils are installed:

    checking for docbook2man... docbook2man
    configure: error: Your local docbook2man was found to work with SGML rather
      than XML. Please install docbook2X and use variable DOCBOOK_TO_MAN to point
      configure to command docbook2x-man of docbook2X.
      Or use DOCBOOK_TO_MAN="xmlto man --skip-validation" if you have xmlto around.
      You can also configure using --without-docbook if you can do without a man
      page for xmlwf.

Signed-off-by: Roland Hieber <r.hieber@pengutronix.de>
---
 rules/host-expat.make | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/rules/host-expat.make b/rules/host-expat.make
index e28aabcd6..02d93f42d 100644
--- a/rules/host-expat.make
+++ b/rules/host-expat.make
@@ -32,6 +32,7 @@ HOST_EXPAT_DIR	= $(HOST_BUILDDIR)/$(HOST_EXPAT)
 HOST_EXPAT_CONF_TOOL	:= autoconf
 HOST_EXPAT_CONF_OPT	:= \
 	$(HOST_AUTOCONF) \
-	--disable-static
+	--disable-static \
+	--without-docbook
 
 # vim: syntax=make
-- 
2.19.1


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