autoconf: Checks for some library functions.

diff --git a/diff.c b/diff.c
index afb629e613e0bcd8034e1701e77f7e16229139d4..5a71489a471568fb3aa51af5d74fa269ec4fadf1 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -2217,7 +2217,7 @@ static int diff_get_patch_id(struct diff_options *options, unsigned char *sha1)
 
                xpp.flags = XDF_NEED_MINIMAL;
                xecfg.ctxlen = 3;
-               xecfg.flags = 3;
+               xecfg.flags = XDL_EMIT_FUNCNAMES;
                ecb.outf = xdiff_outf;
                ecb.priv = &data;
                xdl_diff(&mf1, &mf2, &xpp, &xecfg, &ecb);