We need the math library on some systems.

Ticket 138



git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@1798 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishd/Makefile.am

@@ -68,4 +68,4 @@ varnishd_LDADD = \
 	$(top_builddir)/lib/libvarnish/libvarnish.la \
 	$(top_builddir)/lib/libcompat/libcompat.a \
 	$(top_builddir)/lib/libvcl/libvcl.la \
-	${DL_LIBS} ${PTHREAD_LIBS}
+	${DL_LIBS} ${PTHREAD_LIBS} ${LIBM}

configure.ac

@@ -50,6 +50,9 @@ PTHREAD_LIBS="${LIBS}"
 LIBS="${save_LIBS}"
 AC_SUBST(PTHREAD_LIBS)
 
+AC_CHECK_LIBM
+AC_SUBST(LIBM)
+
 # Checks for header files.
 AC_HEADER_STDC
 AC_HEADER_SYS_WAIT