autoconf: {f77-name-mangling} (F77_FUNC): Add.

From 0f1d65c1278105126377ffc026bc991cd5df4998 Mon Sep 17 00:00:00 2001
From: "Matthew D. Langston" <[EMAIL REDACTED]>
Date: Wed, 2 Jun 1999 12:49:08 +0000
Subject: [PATCH] {f77-name-mangling} (F77_FUNC): Add. (F77_FUNC_): Likewise.

---
 acconfig.h | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/acconfig.h b/acconfig.h
index ea6988fd..02ecfc2e 100644
--- a/acconfig.h
+++ b/acconfig.h
@@ -45,6 +45,21 @@
 /* Define if you have <dirent.h>.  */
 #undef DIRENT
 
+/*
+ * Define to a macro that performs the appropriate name mangling on its
+ * argument to make the C identifier, which *does not* contain
+ * underscores, match the name mangling scheme of the Fortran 77
+ * compiler.
+ */
+#undef F77_FUNC
+
+/*
+ * Define to a macro that performs the appropriate name mangling on its
+ * argument to make the C identifier, which *does* contain underscores,
+ * match the name mangling scheme of the Fortran 77 compiler.
+ */
+#undef F77_FUNC_
+
 /* Define to the type of elements in the array set by `getgroups'.
    Usually this is either `int' or `gid_t'.  */
 #undef GETGROUPS_T