[gnome-shell] configure: Make wayland entirely optional

[Jasper St. Pierre <jstpierre src gnome org>]

commit edd1c89ea1814ae03d25879435c0d4f34eab9c67
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Tue Aug 27 23:45:00 2013 -0400

    configure: Make wayland entirely optional

 configure.ac    |   14 ++++++++++----
 src/Makefile.am |   19 ++++++++++++++++---
 2 files changed, 26 insertions(+), 7 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 01b8c57..3cbcaf0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -97,7 +97,16 @@ SHARED_PCS="gio-unix-2.0 >= $GIO_MIN_VERSION
 
 PKG_CHECK_MODULES(GNOME_SHELL, $SHARED_PCS)
 PKG_CHECK_MODULES(MUTTER, libmutter >= $MUTTER_MIN_VERSION)
-PKG_CHECK_MODULES(MUTTER_WAYLAND, libmutter-wayland >= $MUTTER_MIN_VERSION)
+
+AC_MSG_CHECKING([for wayland support])
+PKG_CHECK_EXISTS([libmutter-wayland >= $MUTTER_MIN_VERSION],
+                 [MUTTER_WAYLAND_TYPELIB_DIR=`$PKG_CONFIG --variable=typelibdir libmutter-wayland`
+                  AC_SUBST(MUTTER_WAYLAND_TYPELIB_DIR)
+                  have_mutter_wayland=yes],
+                 [have_mutter_wayland=no])
+
+AC_MSG_RESULT($have_mutter_wayland)
+AM_CONDITIONAL(HAVE_MUTTER_WAYLAND, test $have_mutter_wayland != no)
 
 PKG_CHECK_MODULES(GNOME_SHELL_JS, gio-2.0 gjs-internals-1.0 >= $GJS_MIN_VERSION)
 PKG_CHECK_MODULES(ST, clutter-1.0 gtk+-3.0 libcroco-0.6 >= 0.6.8 x11)
@@ -138,9 +147,6 @@ AC_SUBST(MUTTER_GIR_DIR)
 MUTTER_TYPELIB_DIR=`$PKG_CONFIG --variable=typelibdir libmutter`
 AC_SUBST(MUTTER_TYPELIB_DIR)
 
-MUTTER_WAYLAND_TYPELIB_DIR=`$PKG_CONFIG --variable=typelibdir libmutter-wayland`
-AC_SUBST(MUTTER_WAYLAND_TYPELIB_DIR)
-
 GJS_CONSOLE=`$PKG_CONFIG --variable=gjs_console gjs-1.0`
 AC_SUBST(GJS_CONSOLE)
 
diff --git a/src/Makefile.am b/src/Makefile.am
index 89072fb..7af1f80 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -33,7 +33,11 @@ bin_SCRIPTS += gnome-shell-extension-tool gnome-shell-extension-prefs \
               gnome-shell-perf-tool
 EXTRA_DIST += gnome-shell-extension-tool.in gnome-shell-extension-prefs.in \
              gnome-shell-perf-tool.in
-bin_PROGRAMS = gnome-shell gnome-shell-wayland
+bin_PROGRAMS = gnome-shell
+
+if HAVE_MUTTER_WAYLAND
+bin_PROGRAMS += gnome-shell-wayland
+endif HAVE_MUTTER_WAYLAND
 
 generated_script_substitutions = \
            -e "s|@bindir[ ]|$(bindir)|g" \
@@ -75,9 +79,13 @@ gnome_shell_cflags =                         \
        -DJSDIR=\"$(pkgdatadir)/js\"
 
 privlibdir = $(pkglibdir)
-privlib_LTLIBRARIES = libgnome-shell-js.la libgnome-shell-menu.la libgnome-shell.la libgnome-shell-wayland.la
+privlib_LTLIBRARIES = libgnome-shell-js.la libgnome-shell-menu.la libgnome-shell.la
 noinst_LTLIBRARIES += libgnome-shell-base.la
 
+if HAVE_MUTTER_WAYLAND
+privlib_LTLIBRARIES += libgnome-shell-wayland.la
+endif HAVE_MUTTER_WAYLAND
+
 shell_built_sources = \
        shell-enum-types.h \
        shell-enum-types.c
@@ -166,7 +174,6 @@ libgnome_shell_sources =            \
        $(NULL)
 
 libgnome_shell_la_SOURCES = $(libgnome_shell_sources)
-libgnome_shell_wayland_la_SOURCES = $(libgnome_shell_sources)
 
 libgnome_shell_la_gir_sources = \
        $(filter-out %-private.h $(shell_private_sources), $(shell_public_headers_h) 
$(libgnome_shell_base_la_SOURCES) $(libgnome_shell_sources))
@@ -182,6 +189,9 @@ gnome_shell_CPPFLAGS = \
 gnome_shell_LDADD = libgnome-shell.la libgnome-shell-js.la $(MUTTER_LIBS) $(BLUETOOTH_LIBS)
 gnome_shell_DEPENDENCIES = libgnome-shell.la
 
+if HAVE_MUTTER_WAYLAND
+libgnome_shell_wayland_la_SOURCES = $(libgnome_shell_sources)
+
 gnome_shell_wayland_SOURCES = main.c
 gnome_shell_wayland_CPPFLAGS = \
        -DHAVE_WAYLAND \
@@ -191,6 +201,7 @@ gnome_shell_wayland_CPPFLAGS = \
 
 gnome_shell_wayland_LDADD = libgnome-shell-wayland.la libgnome-shell-js.la $(MUTTER_WAYLAND_LIBS) 
$(BLUETOOTH_LIBS)
 gnome_shell_wayland_DEPENDENCIES = libgnome-shell-wayland.la
+endif HAVE_MUTTER_WAYLAND
 
 ########################################
 
@@ -292,9 +303,11 @@ libgnome_shell_la_LDFLAGS = $(libgnome_shell_ldflags)
 libgnome_shell_la_LIBADD = $(MUTTER_LIBS) libgnome-shell-base.la
 libgnome_shell_la_CPPFLAGS = $(MUTTER_CFLAGS) $(gnome_shell_cflags)
 
+if HAVE_MUTTER_WAYLAND
 libgnome_shell_wayland_la_LDFLAGS = $(libgnome_shell_ldflags)
 libgnome_shell_wayland_la_LIBADD = $(MUTTER_WAYLAND_LIBS) libgnome-shell-base.la
 libgnome_shell_wayland_la_CPPFLAGS = $(MUTTER_WAYLAND_CFLAGS) -DHAVE_WAYLAND $(gnome_shell_cflags)
+endif HAVE_MUTTER_WAYLAND
 
 ShellMenu-0.1.gir: libgnome-shell-menu.la
 ShellMenu_0_1_gir_INCLUDES = Gio-2.0