From: Robert Schwebel <r.schwebel@pengutronix.de>
Date: Sun, 29 Nov 2009 00:00:00 +0100
Subject: [PATCH] xmlstarlet: bail out if no dtd parsing support in libxml2

We use xmlParseDTD without testing if libxml2 has support
for it enabled. This can result in the following linker error:

xml_validate.o: In function `valAgainstDtd':
xmlstarlet-1.0.1/src/xml_validate.c:229:
undefined reference to `xmlParseDTD'

Signed-off-by: Robert Schwebel <r.schwebel@pengutronix.de>
Applied-Upstream: 1.0.2, commit:5f2a71f57c1500b98ee2d1f9f6757854349e0072
---
 src/xml_validate.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/xml_validate.c b/src/xml_validate.c
index 911bb16d1d5f..a7f55b8da864 100644
--- a/src/xml_validate.c
+++ b/src/xml_validate.c
@@ -226,6 +226,11 @@ valAgainstDtd(valOptionsPtr ops, char* dtdvalid, xmlDocPtr doc, char* filename)
     {
         xmlDtdPtr dtd;
 
+#if !defined(LIBXML_VALID_ENABLED)
+	xmlGenericError(xmlGenericErrorContext,
+	"libxml2 has no validation support");
+	return 2;
+#endif
         dtd = xmlParseDTD(NULL, (const xmlChar *)dtdvalid);
         if (dtd == NULL)
         {