From b23d38f1216c4d70738edaa367cf9ecd2dd4b660 Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Fri, 13 Dec 2019 12:59:26 -0800
Subject: [PATCH] Add configure time check for setsid

Do not assume glibc == linux

Upstream-Status: Pending
Signed-off-by: Khem Raj <raj.khem@gmail.com>

---
 configure    | 1 +
 configure.in | 1 +
 main.c       | 4 ++--
 xtermcfg.hin | 1 +
 4 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/configure b/configure
index 72342c7..c2ec2ac 100755
--- a/configure
+++ b/configure
@@ -5803,6 +5803,7 @@ for ac_func in \
 	unsetenv \
 	sched_yield \
 	setpgid \
+	setsid \
 	strftime \
 	tcgetattr \
 	waitpid \
diff --git a/configure.in b/configure.in
index 56dbc25..0608c80 100644
--- a/configure.in
+++ b/configure.in
@@ -99,6 +99,7 @@ AC_CHECK_FUNCS( \
 	unsetenv \
 	sched_yield \
 	setpgid \
+	setsid \
 	strftime \
 	tcgetattr \
 	waitpid \
diff --git a/main.c b/main.c
index 24da0eb..332174c 100644
--- a/main.c
+++ b/main.c
@@ -2956,7 +2956,7 @@ main(int argc, char *argv[]ENVP_ARG)
     }
 }
 
-#if defined(__osf__) || (defined(__GLIBC__) && !defined(USE_USG_PTYS)) || defined(__DragonFly__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__APPLE__)
+#if defined(__osf__) || (defined(__linux__) && !defined(USE_USG_PTYS)) || defined(__DragonFly__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__APPLE__)
 #define USE_OPENPTY 1
 static int opened_tty = -1;
 #endif
@@ -4205,7 +4205,7 @@ spawnXTerm(XtermWidget xw, unsigned line_speed)
 	    /*
 	     * now in child process
 	     */
-#if defined(_POSIX_SOURCE) || defined(SVR4) || defined(__convex__) || defined(__SCO__) || defined(__QNX__)
+#if HAVE_SETSID
 	    int pgrp = setsid();	/* variable may not be used... */
 #else
 	    int pgrp = getpid();
diff --git a/xtermcfg.hin b/xtermcfg.hin
index 19048cd..e54d2cd 100644
--- a/xtermcfg.hin
+++ b/xtermcfg.hin
@@ -98,6 +98,7 @@
 #undef HAVE_SCHED_YIELD		/* AC_CHECK_FUNCS(sched_yield) */
 #undef HAVE_SETITIMER		/* CF_SETITIMER */
 #undef HAVE_SETPGID		/* AC_CHECK_FUNCS(setpgid) */
+#undef HAVE_SETSID		/* AC_CHECK_FUNCS(setsid) */
 #undef HAVE_STDINT_H		/* AC_PROG_CC_STDC */
 #undef HAVE_STDLIB_H		/* AC_CHECK_HEADERS(stdlib.h) */
 #undef HAVE_STDNORETURN_H	/* CF_C11_NORETURN */
