Make wacom, colord, goa optional

Original author: Alexandre Rostovtsev <tetromino@gentoo.org>
--- configure.ac
+++ configure.ac
@@ -137,10 +137,48 @@
 PKG_CHECK_MODULES(MOUSE_PANEL, $COMMON_MODULES xi >= 1.2
                   gnome-settings-daemon >= $GSD_REQUIRED_VERSION x11)
 PKG_CHECK_MODULES(NETWORK_PANEL, $COMMON_MODULES)
-PKG_CHECK_MODULES(ONLINE_ACCOUNTS_PANEL, $COMMON_MODULES goa-1.0 goa-backend-1.0 >= $GOA_REQUIRED_VERSION)
+
+build_online_accounts=false
+AC_ARG_ENABLE(goa,
+  AC_HELP_STRING([--disable-goa],
+                 [disable online accounts management panel]),
+      [case "${enableval}" in
+              yes) WANT_ONLINE_ACCOUNTS=yes ;;
+              no) WANT_ONLINE_ACCOUNTS=no ;;
+              *) AC_MSG_ERROR(bad value ${enableval} for --disable-goa) ;;
+      esac],
+      [WANT_ONLINE_ACCOUNTS=yes]) dnl Default value
+
+if test x$WANT_ONLINE_ACCOUNTS = xyes; then
+      PKG_CHECK_MODULES(ONLINE_ACCOUNTS_PANEL, $COMMON_MODULES goa-1.0 goa-backend-1.0 >= $GOA_REQUIRED_VERSION)
+      build_online_accounts=true
+fi
+AM_CONDITIONAL(BUILD_ONLINE_ACCOUNTS, test "x$build_online_accounts" = "xtrue")
+AC_SUBST(ONLINE_ACCOUNTS_PANEL_CFLAGS)
+AC_SUBST(ONLINE_ACCOUNTS_PANEL_LIBS)
+
 PKG_CHECK_MODULES(POWER_PANEL, $COMMON_MODULES upower-glib >= 0.9.1
                   gnome-settings-daemon >= $GSD_REQUIRED_VERSION)
-PKG_CHECK_MODULES(COLOR_PANEL, $COMMON_MODULES colord >= 0.1.8)
+
+build_color=false
+AC_ARG_ENABLE(color,
+  AC_HELP_STRING([--disable-color],
+                 [disable color management panel]),
+      [case "${enableval}" in
+              yes) WANT_COLOR=yes ;;
+              no) WANT_COLOR=no ;;
+              *) AC_MSG_ERROR(bad value ${enableval} for --disable-color) ;;
+      esac],
+      [WANT_COLOR=yes]) dnl Default value
+
+if test x$WANT_COLOR = xyes; then
+      PKG_CHECK_MODULES(COLOR_PANEL, $COMMON_MODULES colord >= 0.1.8)
+      build_color=true
+fi
+AM_CONDITIONAL(BUILD_COLOR, test "x$build_color" = "xtrue")
+AC_SUBST(COLOR_PANEL_CFLAGS)
+AC_SUBST(COLOR_PANEL_LIBS)
+
 PKG_CHECK_MODULES(PRINTERS_PANEL, $COMMON_MODULES
                   polkit-gobject-1 >= $POLKIT_REQUIRED_VERSION)
 PKG_CHECK_MODULES(REGION_PANEL, $COMMON_MODULES
@@ -174,10 +212,24 @@
 fi
 AM_CONDITIONAL(BUILD_NETWORK, [test x$have_networkmanager = xyes])
 
-# Check for gnome-bluetooth
-PKG_CHECK_MODULES(BLUETOOTH, $COMMON_MODULES gnome-bluetooth-1.0 >= 3.5.5,
-		  [have_bluetooth=yes], have_bluetooth=no)
-AM_CONDITIONAL(BUILD_BLUETOOTH, [test x$have_bluetooth = xyes])
+have_bluetooth=false
+AC_ARG_ENABLE(bluetooth,
+  AC_HELP_STRING([--disable-bluetooth],
+                 [disable bluetooth management panel]),
+      [case "${enableval}" in
+              yes) WANT_BLUETOOTH=yes ;;
+              no) WANT_BLUETOOTH=no ;;
+              *) AC_MSG_ERROR(bad value ${enableval} for --disable-bluetooth) ;;
+      esac],
+      [WANT_BLUETOOTH=yes]) dnl Default value
+
+if test x$WANT_BLUETOOTH = xyes; then
+     # Check for gnome-bluetooth
+     PKG_CHECK_MODULES(BLUETOOTH, $COMMON_MODULES gnome-bluetooth-1.0 >= 3.5.5)
+     have_bluetooth=true
+fi
+
+AM_CONDITIONAL(BUILD_BLUETOOTH, [test x$have_bluetooth = xtrue])
 
 # Check for CUPS 1.4 or newer
 AC_ARG_ENABLE([cups],
@@ -237,11 +289,23 @@
     if test "$host_cpu" = s390 -o "$host_cpu" = s390x; then
       have_wacom=no
     else
-      PKG_CHECK_MODULES(WACOM_PANEL, $COMMON_MODULES
-                        gnome-settings-daemon >= $GSD_REQUIRED_VERSION
-                        xi >= 1.2 x11 libwacom >= $LIBWACOM_REQUIRED_VERSION
-                        gnome-desktop-3.0 >= $GNOME_DESKTOP_REQUIRED_VERSION)
-      have_wacom=yes
+      AC_ARG_ENABLE(wacom,
+        AC_HELP_STRING([--disable-wacom],
+                       [disable wacom management panel]),
+            [case "${enableval}" in
+                    yes) WANT_WACOM=yes ;;
+                    no) WANT_WACOM=no ;;
+                    *) AC_MSG_ERROR(bad value ${enableval} for --disable-wacom) ;;
+            esac],
+            [WANT_WACOM=yes]) dnl Default value
+      
+      if test x$WANT_WACOM = xyes; then
+            PKG_CHECK_MODULES(WACOM_PANEL, $COMMON_MODULES
+                              gnome-settings-daemon >= $GSD_REQUIRED_VERSION
+                              xi >= 1.2 x11 libwacom >= $LIBWACOM_REQUIRED_VERSION
+                              gnome-desktop-3.0 >= $GNOME_DESKTOP_REQUIRED_VERSION)
+            have_wacom=yes
+      fi
     fi
     ;;
   *)
@@ -509,6 +573,11 @@
 else
 	AC_MSG_NOTICE([   Bluetooth panel disabled])
 fi
+if test "x$build_color" = "xtrue"; then
+	AC_MSG_NOTICE([** colord (Color panel)])
+else
+	AC_MSG_NOTICE([   Color panel disabled])
+fi
 if test "x$enable_cups" = "xyes"; then
 	AC_MSG_NOTICE([** CUPS (Printers panel)])
 else
@@ -519,6 +588,11 @@
 else
 	AC_MSG_NOTICE([   Users panel webcam support disabled])
 fi
+if test "x$build_online_accounts" = "xtrue"; then
+	AC_MSG_NOTICE([** gnome-online-accounts (Online Accounts panel)])
+else
+	AC_MSG_NOTICE([   Online Accounts panel disabled])
+fi
 if test "x$with_libsocialweb" = "xyes"; then
 	AC_MSG_NOTICE([** libsocialweb (Background panel Flickr support)])
 else
@@ -529,6 +603,11 @@
 else
 	AC_MSG_NOTICE([   Using ConsoleKit for session tracking])
 fi
+if test "x$build_wacom" = "xtrue"; then
+	AC_MSG_NOTICE([** libwacom (Wacom Graphics Tablet panel)])
+else
+	AC_MSG_NOTICE([   Wacom Graphics Tablet panel disabled])
+fi
 if test "x$have_wacom" = "xyes"; then
 	AC_MSG_NOTICE([** wacom (Wacom tablet panel)])
 else
--- panels/Makefile.am
+++ panels/Makefile.am
@@ -3,10 +3,8 @@
 	background \
 	screen \
 	power \
-	color \
 	display \
 	mouse \
-	online-accounts \
 	region \
 	info \
 	sound \
@@ -15,6 +13,10 @@
 	user-accounts \
 	datetime
 
+if BUILD_COLOR
+SUBDIRS += color
+endif
+ 
 if BUILD_WACOM
 SUBDIRS += wacom
 endif
@@ -31,4 +33,8 @@
 SUBDIRS += bluetooth
 endif
 
+if BUILD_ONLINE_ACCOUNTS
+SUBDIRS += online-accounts
+endif
+
 -include $(top_srcdir)/git.mk