[build] Fix linking with pedantic linkers

- Explicitly link to x11 on gnome platform.
- Explicitly link evince (shell) with libm.
- Add explicit -lm flag for libevview and backends, so that we do not
  depend on gtk+-2.0's .pc file to pull this flag in.

Fixes bgo#609895.

diff --git a/configure.ac b/configure.ac
index 5f6233580dc0b613f065ece1fdaa7121689cf486..70fae5fc7d9c220423bb51eedabee78db28cecd4 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -155,6 +155,8 @@ case "$with_platform" in
         # the hicolor-icon-theme does not have a pkgconfig file, on gnome we
         # require the gnome icon theme instead.
         SHELL_PLATFORM_PKGS="gnome-icon-theme >= $GNOME_ICON_THEME_REQUIRED"
+        # The totem-screensaver and egg_smclient code use x11 directly.
+        SHELL_PLATFORM_PKGS="$SHELL_PLATFORM_PKGS x11"
         ;;
   *)
         # On all other platforms we issue a warning about the runtime
@@ -345,16 +347,17 @@ AC_SUBST(LIBDOCUMENT_CFLAGS)
 AC_SUBST(LIBDOCUMENT_LIBS)
 
 LIBVIEW_CFLAGS="$LIBVIEW_CFLAGS $GTKUNIXPRINT_CFLAGS $DEBUG_FLAGS"
-LIBVIEW_LIBS="$LIBVIEW_LIBS $GTKUNIXPRINT_LIBS"
+LIBVIEW_LIBS="$LIBVIEW_LIBS $GTKUNIXPRINT_LIBS -lm"
 AC_SUBST(LIBVIEW_CFLAGS)
 AC_SUBST(LIBVIEW_LIBS)
 
 BACKEND_CFLAGS="$BACKEND_CFLAGS -DGDK_MULTIHEAD_SAFE -DGTK_MULTIHEAD_SAFE $DEBUG_FLAGS"
+BACKEND_LIBS="$BACKEND_LIBS -lm"
 AC_SUBST(BACKEND_CFLAGS)
 AC_SUBST(BACKEND_LIBS)
 
 SHELL_CFLAGS="$SHELL_CORE_CFLAGS $DBUS_CFLAGS $KEYRING_CFLAGS $GCONF_CFLAGS -DGDK_MULTIHEAD_SAFE -DGTK_MULTIHEAD_SAFE $DEBUG_FLAGS"
-SHELL_LIBS="$SHELL_CORE_LIBS $DBUS_LIBS $KEYRING_LIBS $GCONF_LIBS -lz"
+SHELL_LIBS="$SHELL_CORE_LIBS $DBUS_LIBS $KEYRING_LIBS $GCONF_LIBS -lz -lm"
 AC_SUBST(SHELL_CFLAGS)
 AC_SUBST(SHELL_LIBS)