build: use an autoconf macro to get to -lm

[empathy.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 810b735138c19a6b37fb65bbfcb60303f5c7db67..e235118abe87646a8026570af5b187988e6e60eb 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -167,6 +167,9 @@ AC_SUBST(LDFLAGS)
 # Pkg-Config dependency checks
 # -----------------------------------------------------------
 
+AC_CHECK_LIBM
+AC_SUBST(LIBM)
+
 PKG_CHECK_MODULES(EMPATHY,
 [
    dbus-glib-1