build: make wayland support unconditional

In the wayland branch of mutter, we want to build a wayland version
of the mutter libraries, and that's much easier if we just build
wayland support unconditionally.
The define is kept to avoid a huge diff, but should be removed
in a later patch.
Also, wayland support can still be disable at runtime, by
launching mutter without the --nested switch.

https://bugzilla.gnome.org/show_bug.cgi?id=705497

configure.ac

@@ -113,11 +113,6 @@ AC_ARG_ENABLE(shape,
                  [disable mutter's use of the shaped window extension]),,
   enable_shape=auto)
 
-AC_ARG_ENABLE(wayland,
-  AC_HELP_STRING([--enable-wayland],
-                 [Enable support for running as a hybrid X and Wayland compositor]),,
-  enable_wayland=no)
-
 ## Wayland support requires the xserver.xml protocol extension found in the weston
 ## repository but since there aren't currently established conventions for
 ## installing and discovering these we simply require a location to be given
@@ -216,29 +211,16 @@ if test x$have_xcursor = xyes; then
   AC_DEFINE(HAVE_XCURSOR, , [Building with Xcursor support])
 fi
 
-have_wayland=no
-if test x$enable_wayland = "xyes"; then
-  WAYLAND_VERSION=0.1
-  AC_MSG_CHECKING([Wayland >= $WAYLAND_VERSION])
-  if ! $PKG_CONFIG --atleast-version $WAYLAND_VERSION wayland-server; then
-    AC_MSG_ERROR([wayland support enabled but no suitable wayland-server package found])
-  fi
-  AC_MSG_RESULT(yes)
+# We always build with wayland enabled
+AC_DEFINE(HAVE_WAYLAND, , [Building with Wayland support])
 
-  AC_PATH_PROG([WAYLAND_SCANNER],[wayland-scanner],[no])
-  AS_IF([test "x$WAYLAND_SCANNER" = "xno"],
+AC_PATH_PROG([WAYLAND_SCANNER],[wayland-scanner],[no])
+AS_IF([test "x$WAYLAND_SCANNER" = "xno"],
   AC_MSG_ERROR([Could not find wayland-scanner in your PATH, required for parsing wayland extension protocols]))
-  AC_SUBST([WAYLAND_SCANNER])
-
-  AC_SUBST(XWAYLAND_PATH)
-
-  MUTTER_PC_MODULES="$MUTTER_PC_MODULES wayland-server"
-  AC_DEFINE(HAVE_WAYLAND, , [Building with Wayland support])
-  have_wayland=yes
-fi
-
-AM_CONDITIONAL(HAVE_WAYLAND, test x$have_wayland = "xyes")
+AC_SUBST([WAYLAND_SCANNER])
+AC_SUBST(XWAYLAND_PATH)
 
+MUTTER_PC_MODULES="$MUTTER_PC_MODULES wayland-server"
 PKG_CHECK_MODULES(MUTTER, $MUTTER_PC_MODULES)
 
 PKG_CHECK_EXISTS([xi >= 1.6.99.1],
@@ -496,14 +478,12 @@ fi
 
 dnl ==========================================================================
 echo "
-mutter-$VERSION
+mutter-wayland-$VERSION
 
 	prefix:                   ${prefix}
 	source code location:	  ${srcdir}
 	compiler:		  ${CC}
 
-	Wayland:		  ${have_wayland}
-
 	Startup notification:     ${have_startup_notification}
 	libcanberra:              ${have_libcanberra}
 	Introspection:            ${found_introspection}

data/Makefile.am

@@ -1,7 +1,3 @@
 defaultcursordir = $(datadir)/mutter/cursors
 
-dist_defaultcursor_DATA =
-
-if HAVE_WAYLAND
-dist_defaultcursor_DATA += left_ptr.png
-endif
+dist_defaultcursor_DATA = left_ptr.png

src/Makefile.am

@@ -29,24 +29,18 @@ INCLUDES=								\
 	-DMUTTER_PLUGIN_DIR=\"@MUTTER_PLUGIN_DIR@\"			\
 	-DGETTEXT_PACKAGE=\"$(GETTEXT_PACKAGE)\"
 
-if HAVE_WAYLAND
 INCLUDES += \
 	-I$(srcdir)/wayland						\
 	-I$(builddir)/wayland						\
 	-DXWAYLAND_PATH='"@XWAYLAND_PATH@"'
-endif
 
 mutter_built_sources = \
 	$(dbus_idle_built_sources)		\
 	mutter-enum-types.h 			\
-	mutter-enum-types.c
-
-if HAVE_WAYLAND
-mutter_built_sources += \
+	mutter-enum-types.c			\
 	wayland/xserver-protocol.c		\
 	wayland/xserver-server-protocol.h	\
 	wayland/xserver-client-protocol.h
-endif
 
 libmutter_la_SOURCES =				\
 	core/async-getprop.c			\
@@ -178,7 +172,6 @@ libmutter_la_SOURCES =				\
 	ui/ui.c					\
 	$(mutter_built_sources)
 
-if HAVE_WAYLAND
 libmutter_la_SOURCES +=				\
 	wayland/meta-wayland.c			\
 	wayland/meta-wayland-private.h		\
@@ -194,7 +187,6 @@ libmutter_la_SOURCES +=				\
 	wayland/meta-wayland-seat.h		\
 	wayland/meta-wayland-stage.h		\
 	wayland/meta-wayland-stage.c
-endif
 
 libmutter_la_LDFLAGS = -no-undefined
 libmutter_la_LIBADD  = $(MUTTER_LIBS)
@@ -376,7 +368,6 @@ $(dbus_idle_built_sources) : Makefile.am idle-monitor.xml
 		--c-generate-object-manager						\
 		$(srcdir)/idle-monitor.xml
 
-if HAVE_WAYLAND
 wayland/%-protocol.c : $(top_builddir)/protocol/%.xml
 	mkdir -p wayland
 	$(AM_V_GEN)$(WAYLAND_SCANNER) code < $< > $@
@@ -386,4 +377,3 @@ wayland/%-server-protocol.h : $(top_builddir)/protocol/%.xml
 wayland/%-client-protocol.h : $(top_builddir)/protocol/%.xml
 	mkdir -p wayland
 	$(AM_V_GEN)$(WAYLAND_SCANNER) client-header < $< > $@
-endif