X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~mdw/git/fwd/blobdiff_plain/40e9d2eb6382b702d1c45bb8dc5d82eb7feba69f..68263f4f5ac7eba4b364b4756c0b316831fda4e3:/configure.ac

diff --git a/configure.ac b/configure.ac
index d625a0c..b1037ae 100644
--- a/configure.ac
+++ b/configure.ac
@@ -54,6 +54,7 @@ AC_CHECK_DECLS([environ])
 AC_CHECK_DECLS([_sys_siglist])
 
 dnl Libraries.
+AC_SEARCH_LIBS([modf], [m])
 AC_SEARCH_LIBS([socket], [socket])
 AC_SEARCH_LIBS([gethostbyname], [nsl resolv])