[Libva] [PATCH 1/2] Don't try to build the documentation if doxygen isn't found

[Xiang, Haihao]

From: "Xiang, Haihao" <haihao.xiang at intel.com>

Making all in doc
make[2]: Entering directory `/home/xhh/graphics/ex/vaapi/libva/doc'
enable_docs=no Doxyfile
/bin/bash: Doxyfile: command not found
make[2]: *** [html-out/index.html] Error 127
make[2]: Leaving directory `/home/xhh/graphics/ex/vaapi/libva/doc'

Signed-off-by: Xiang, Haihao <haihao.xiang at intel.com>
---
 configure.ac |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 0cef554..b296d4c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -175,7 +175,10 @@ AC_SYS_LARGEFILE
 
 # Check for Doxygen
 if test "$enable_docs" = "yes"; then
-    AC_CHECK_TOOL([DOXYGEN], [doxygen], [enable_docs="no"])
+    AC_CHECK_TOOL([DOXYGEN], [doxygen], [no])
+    if test "$DOXYGEN" = "no"; then
+       enable_docs="no"
+    fi
 fi
 AM_CONDITIONAL(ENABLE_DOCS, test "$enable_docs" = "yes")
 
-- 
1.7.9.5