[Libva] [PATCH] fix for GL_DEPS_LIBS when there is neither gl.pc nor libGL.so

[Xiang, Haihao]

The root cause for this issue is to link wrong libraries when build
libva-egl. the following patch can fix this issue:

---
 va/Makefile.am |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/va/Makefile.am b/va/Makefile.am
index a2a26e6..968474f 100644
--- a/va/Makefile.am
+++ b/va/Makefile.am
@@ -120,7 +120,7 @@ libva_egl_la_SOURCES                =
 libva_egl_la_LDFLAGS           = $(LDADD)
 libva_egl_la_DEPENDENCIES      = $(libvacorelib) egl/libva_egl.la libva-x11.la
 libva_egl_la_LIBADD            = $(libvacorelib) egl/libva_egl.la libva-x11.la \
-       $(GL_DEPS_LIBS) -ldl
+       $(EGL_DEPS_LIBS) -ldl
 endif
 
 if USE_WAYLAND
-- 
1.7.9.5


> ---
>  configure.ac |   11 +++++++++--
>  1 file changed, 9 insertions(+), 2 deletions(-)
> 
> diff --git a/configure.ac b/configure.ac
> index 9c282b2..eedd6fb 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -236,12 +236,19 @@ GL_DEPS_LIBS=""
>  if test "$USE_X11:$enable_glx" = "yes:yes"; then
>      saved_CFLAGS="$CFLAGS"
>      saved_LIBS="$LIBS"
> -    PKG_CHECK_MODULES([GL_DEPS], [gl], [], [GL_DEPS_LIBS="-lX11 -lGL"])
> +    PKG_CHECK_MODULES([GL_DEPS], [gl], [], [_GL_DEPS_LIBS="-lX11 -lGL"])
>      CFLAGS="$CFLAGS $GL_DEPS_CFLAGS"
> -    LIBS="$LIBS $GL_DEPS_LIBS"
> +    if test -nz "$GL_DEPS_LIBS" ; then
> +        LIBS="$LIBS $GL_DEPS_LIBS"
> +    else
> +        LIBS="$LIBS $_GL_DEPS_LIBS"
> +    fi
>      AC_CHECK_HEADERS([GL/gl.h])
>      AC_CHECK_HEADERS([GL/glx.h])
>      AC_CHECK_LIB(GL, glXCreateContext, [USE_GLX="yes"])
> +    if test "$USE_GLX" = "yes" && test -z "$GL_DEPS_LIBS"; then
> +        GL_DEPS_LIBS = "$_GL_DEPS_LIBS="
> +    fi
>      CFLAGS="$saved_CFLAGS"
>      LIBS="$saved_LIBS"
>  fi