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From 873d4759aa7b0581bf34e8a7ebfcbeca789ed6e1 Mon Sep 17 00:00:00 2001
From: Florian Schmaus <flo@geekplace.eu>
Date: Tue, 16 May 2023 09:56:48 +0200
Subject: [PATCH] m4/ptyfuncs.m4 tools/configure: add linux headers for pty
functions
To avoid implicit function declarations, which will cause an error on
modern compilers. See https://wiki.gentoo.org/wiki/Modern_C_porting
Downstream Gentoo bug: https://bugs.gentoo.org/904449
Signed-off-by: Florian Schmaus <flo@geekplace.eu>
---
m4/ptyfuncs.m4 | 3 +++
tools/configure | 3 +++
2 files changed, 6 insertions(+)
diff --git a/m4/ptyfuncs.m4 b/m4/ptyfuncs.m4
index 3e37b5a23c8b..d1a2208398e3 100644
--- a/m4/ptyfuncs.m4
+++ b/m4/ptyfuncs.m4
@@ -19,6 +19,9 @@ AC_DEFUN([AX_CHECK_PTYFUNCS], [
AC_LINK_IFELSE([AC_LANG_SOURCE([
#ifdef INCLUDE_LIBUTIL_H
#include INCLUDE_LIBUTIL_H
+#else
+#include <pty.h>
+#include <utmp.h>
#endif
int main(void) {
openpty(0,0,0,0,0);
diff --git a/tools/configure b/tools/configure
index 5df30df9b35c..01f57b20c318 100755
--- a/tools/configure
+++ b/tools/configure
@@ -9002,6 +9002,9 @@ See \`config.log' for more details" "$LINENO" 5; }
#ifdef INCLUDE_LIBUTIL_H
#include INCLUDE_LIBUTIL_H
+#else
+#include <pty.h>
+#include <utmp.h>
#endif
int main(void) {
openpty(0,0,0,0,0);
--
2.39.3
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