[clutter-gst] build: Add -lm dependency to clutter-gst-3.0.la

[Philip Withnall <pwithnall src gnome org>]

commit b9de8d411b15c54369401ffe2db2e1fdb3d5f07d
Author: Philip Withnall <philip withnall collabora co uk>
Date:   Mon Dec 1 11:45:37 2014 +0000

    build: Add -lm dependency to clutter-gst-3.0.la
    
    It uses rint(), cos() and sin().
    
    https://bugzilla.gnome.org/show_bug.cgi?id=740963

 clutter-gst/Makefile.am |    3 ++-
 configure.ac            |    2 ++
 2 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/clutter-gst/Makefile.am b/clutter-gst/Makefile.am
index e434408..5a428de 100644
--- a/clutter-gst/Makefile.am
+++ b/clutter-gst/Makefile.am
@@ -90,7 +90,7 @@ AM_CFLAGS =                           \
 
 lib_LTLIBRARIES = libclutter-gst- CLUTTER_GST_MAJORMINOR@.la
 
-libclutter_gst_ CLUTTER_GST_MAJORMINOR@_la_LIBADD  = @CLUTTER_GST_LIBS@ $(GST_LIBS) $(GUDEV_LIBS) $(HW_LIBS)
+libclutter_gst_ CLUTTER_GST_MAJORMINOR@_la_LIBADD  = @CLUTTER_GST_LIBS@ $(GST_LIBS) $(GUDEV_LIBS) $(HW_LIBS) 
$(LIBM)
 libclutter_gst_ CLUTTER_GST_MAJORMINOR@_la_LDFLAGS =   \
        $(CLUTTER_GST_LT_LDFLAGS)                       \
        $(GL_LDFLAGS)                                   \
@@ -121,6 +121,7 @@ plugin_LTLIBRARIES = libgstclutter- CLUTTER_GST_MAJORMINOR@.la
 libgstclutter_ CLUTTER_GST_MAJORMINOR@_la_LIBADD  = \
        $(PLUGIN_LIBS) \
        $(HW_LIBS) \
+       $(LIBM) \
        libclutter-gst- CLUTTER_GST_MAJORMINOR@.la
 libgstclutter_ CLUTTER_GST_MAJORMINOR@_la_LDFLAGS =    \
        $(GL_LDFLAGS)           \
diff --git a/configure.ac b/configure.ac
index b8f82e1..a0b5d6e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -140,6 +140,8 @@ AM_CONDITIONAL([HAVE_PYTHON], [test "x$have_python" = "xyes"])
 
 dnl ========================================================================
 
+LT_LIB_M
+
 PKG_CHECK_MODULES(CLUTTER_GST,
                   [clutter-1.0 >= $CLUTTER_REQ_VERSION
                    cogl-2.0-experimental >= $COGL_REQ_VERSION