From 2796361516ebf60825189018cea24d2c5c24ea34 Mon Sep 17 00:00:00 2001
From: Herbert Valerio Riedel <hvr@gnu.org>
Date: Sun, 31 Jan 2016 10:03:46 +0100
Subject: Provide execvpe prototype if missing

---
 cbits/execvpe.c | 5 +++++
 configure.ac    | 1 +
 2 files changed, 6 insertions(+)

diff --git a/cbits/execvpe.c b/cbits/execvpe.c
index 82e1bdc..708b8b2 100644
--- a/cbits/execvpe.c
+++ b/cbits/execvpe.c
@@ -25,6 +25,11 @@
 #define HSUNIX_EXECVPE_H_NO_COMPAT
 #include "execvpe.h"
 
+#if !defined(execvpe) && !HAVE_DECL_EXECVPE
+// On some archs such as AIX, the prototype may be missing
+int execvpe(const char *file, char *const argv[], char *const envp[]);
+#endif
+
 /*
  * We want the search semantics of execvp, but we want to provide our
  * own environment, like execve.  The following copyright applies to
diff --git a/configure.ac b/configure.ac
index f883624..5b6eb7c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -41,6 +41,7 @@ dnl not available on android so check for it
 AC_CHECK_FUNCS([telldir seekdir])
 
 dnl This is e.g. available as a GNU extension in glibc 2.11+
+AC_CHECK_DECLS([execvpe])
 AC_CHECK_FUNCS([execvpe])
 
 AC_CHECK_MEMBERS([struct stat.st_atim])
-- 
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