From 193f1e81edd6b1b56b0eb0ff8aa4b41c7b4257b4 Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Sun, 24 Sep 2017 09:12:58 -0400
Subject: [PATCH] glob: Do not assume glibc glob internals.

It has been proposed that glibc glob start using gl_lstat,
which the API allows it to do.  GNU 'make' should not get in
the way of this.  See:
https://sourceware.org/ml/libc-alpha/2017-09/msg00409.html

* dir.c (local_lstat): New function, like local_stat.
(dir_setup_glob): Use it to initialize gl_lstat too, as the API
requires.
---
 dir.c | 29 +++++++++++++++++++++++++++--
 1 file changed, 27 insertions(+), 2 deletions(-)

Index: kbuild-0.1.9998svn3427/src/kmk/dir.c
===================================================================
--- kbuild-0.1.9998svn3427.orig/src/kmk/dir.c
+++ kbuild-0.1.9998svn3427/src/kmk/dir.c
@@ -1559,6 +1559,32 @@ static int dir_exists_p (const char *dir
 }
 #endif
 
+/* Similarly for lstat.  */
+#if !defined(lstat) && !defined(WINDOWS32) || defined(VMS)
+# ifndef VMS
+#  ifndef HAVE_SYS_STAT_H
+int lstat (const char *path, struct stat *sbuf);
+#  endif
+# else
+    /* We are done with the fake lstat.  Go back to the real lstat */
+#   ifdef lstat
+#     undef lstat
+#   endif
+# endif
+# define local_lstat lstat
+#elif defined(WINDOWS32)
+/* Windows doesn't support lstat().  */
+# define local_lstat local_stat
+#else
+static int
+local_lstat (const char *path, struct stat *buf)
+{
+  int e;
+  EINTRLOOP (e, lstat (path, buf));
+  return e;
+}
+#endif
+
 void
 dir_setup_glob (glob_t *gl)
 {
@@ -1566,15 +1592,11 @@ dir_setup_glob (glob_t *gl)
   gl->gl_readdir = read_dirstream;
   gl->gl_closedir = free;
   gl->gl_stat = local_stat;
-#ifdef __EMX__ /* The FreeBSD implementation actually uses gl_lstat!! */
-  gl->gl_lstat = local_stat;
-#endif
+  gl->gl_lstat = local_lstat;
 #ifdef GLOB_WITH_EXTENDED_KMK_MEMBERS
   gl->gl_exists = file_exists_p;
   gl->gl_isdir = dir_exists_p;
 #endif
-  /* We don't bother setting gl_lstat, since glob never calls it.
-     The slot is only there for compatibility with 4.4 BSD.  */
 }
 
 void