[libchamplain/libchamplain-0-10] build: link against libm

[JiÅÃ Techet <jiritechet src gnome org>]

commit 7cfe135aba3eabc9694e13517c0e02f562ed98e8
Author: FrÃdÃric PÃters <fpeters 0d be>
Date:   Tue Aug 30 21:40:22 2011 +0200

    build: link against libm
    
    https://bugzilla.gnome.org/show_bug.cgi?id=657760

 champlain/Makefile.am |    2 +-
 configure.ac          |    3 +++
 2 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/champlain/Makefile.am b/champlain/Makefile.am
index afa941c..a4b55a6 100644
--- a/champlain/Makefile.am
+++ b/champlain/Makefile.am
@@ -131,7 +131,7 @@ nodist_libchamplain_ CHAMPLAIN_API_VERSION@_la_SOURCES = \
 	$(libchamplain_headers_built)	\
 	$(libchamplain_sources_built)
 
-libchamplain_ CHAMPLAIN_API_VERSION@_la_LIBADD = $(DEPS_LIBS) $(SOUP_LIBS) $(MEMPHIS_LIBS)
+libchamplain_ CHAMPLAIN_API_VERSION@_la_LIBADD = $(DEPS_LIBS) $(SOUP_LIBS) $(MEMPHIS_LIBS) $(LIBM)
 
 libchamplain_ CHAMPLAIN_API_VERSION@_la_LDFLAGS = \
 	-version-info $(LIBRARY_VERSION)\
diff --git a/configure.ac b/configure.ac
index 5a8f3f8..b64984a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -56,6 +56,9 @@ AC_SUBST(LIBRARY_VERSION)
 
 # Checks for libraries.
 
+AC_CHECK_LIBM
+AC_SUBST(LIBM)
+
 PKG_CHECK_MODULES(DEPS,
   [   glib-2.0 >= 2.16
       gobject-2.0 >= 2.10