automake: cleanup pipe-loader handling when using sw/xlib winsys

Rather than defining our own set of variables, use NEED_WINSYS_XLIB
and based on it include the sw/xlib winsys.

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>

configure.ac

@@ -1935,9 +1935,7 @@ AM_CONDITIONAL(NEED_GALLIUM_LLVMPIPE_DRIVER, test "x$HAVE_GALLIUM_I915" = xyes -
 if test "x$enable_gallium_loader" = xyes; then
     GALLIUM_WINSYS_DIRS="$GALLIUM_WINSYS_DIRS sw/null"
 
-    if test "x$enable_gallium_xlib_loader" = xyes; then
-        GALLIUM_WINSYS_DIRS="$GALLIUM_WINSYS_DIRS sw/xlib"
-        NEED_WINSYS_XLIB="yes"
+    if test "x$NEED_WINSYS_XLIB" = xyes; then
         GALLIUM_PIPE_LOADER_DEFINES="$GALLIUM_PIPE_LOADER_DEFINES -DHAVE_PIPE_LOADER_XLIB"
     fi
 
@@ -1963,7 +1961,6 @@ if test "x$enable_gallium_loader" = xyes; then
     AC_SUBST([GALLIUM_PIPE_LOADER_CLIENT_DEFINES])
     AC_SUBST([GALLIUM_PIPE_LOADER_CLIENT_LIBS])
 fi
-AM_CONDITIONAL(NEED_PIPE_LOADER_XLIB, test "x$enable_gallium_xlib_loader" = xyes)
 
 AM_CONDITIONAL(HAVE_I915_DRI, test x$HAVE_I915_DRI = xyes)
 AM_CONDITIONAL(HAVE_I965_DRI, test x$HAVE_I965_DRI = xyes)

src/gallium/targets/gbm/Makefile.am

@@ -56,7 +56,7 @@ gbm_gallium_drm_la_LIBADD += \
 	$(top_builddir)/src/gallium/winsys/sw/dri/libswdri.la
 endif
 
-if NEED_PIPE_LOADER_XLIB
+if NEED_WINSYS_XLIB
 gbm_gallium_drm_la_LIBADD += \
 	$(top_builddir)/src/gallium/winsys/sw/xlib/libws_xlib.la \
 	-lX11 -lXext -lXfixes \

src/gallium/targets/opencl/Makefile.am

@@ -37,7 +37,7 @@ lib@OPENCL_LIBNAME@_la_LIBADD += \
 	$(top_builddir)/src/gallium/winsys/sw/dri/libswdri.la
 endif
 
-if NEED_PIPE_LOADER_XLIB
+if NEED_WINSYS_XLIB
 lib@OPENCL_LIBNAME@_la_LIBADD += \
 	$(top_builddir)/src/gallium/winsys/sw/xlib/libws_xlib.la \
 	-lX11 -lXext -lXfixes \

src/gallium/targets/xa/Makefile.am

@@ -53,7 +53,7 @@ libxatracker_la_LIBADD += \
 	$(top_builddir)/src/gallium/winsys/sw/dri/libswdri.la
 endif
 
-if NEED_PIPE_LOADER_XLIB
+if NEED_WINSYS_XLIB
 libxatracker_la_LIBADD += \
 	$(top_builddir)/src/gallium/winsys/sw/xlib/libws_xlib.la \
 	-lX11 -lXext -lXfixes \

src/gallium/tests/trivial/Makefile.am

@@ -18,7 +18,7 @@ LDADD = $(GALLIUM_PIPE_LOADER_CLIENT_LIBS) \
 	$(top_builddir)/src/gallium/auxiliary/libgallium.la \
 	$(GALLIUM_COMMON_LIB_DEPS)
 
-if NEED_PIPE_LOADER_XLIB
+if NEED_WINSYS_XLIB
 LDADD += \
 	$(top_builddir)/src/gallium/winsys/sw/xlib/libws_xlib.la \
 	-lX11 -lXext -lXfixes \