From d3b710b0da49a8c7b6516dc32d4be65fe602cb39 Mon Sep 17 00:00:00 2001
From: "Todd C. Miller" <Todd.Miller@sudo.ws>
Date: Tue, 12 May 2020 09:52:27 -0600
Subject: [PATCH] cfmakeraw(3) is broken on AIX, don't use it there The
 cfmakeraw(3) function exists but does not set VMIN to 1 or VTIME to 0 in
 c_cc[] in struct termios, which makes it useless.  The AIX version also
 doesn't clear the CSIZE and PARENB flags from c_cflag.

---
 configure    | 3 +++
 configure.ac | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/configure b/configure
index 41fe11ae2..9b36de251 100755
--- a/configure
+++ b/configure
@@ -15605,6 +15605,9 @@ fi
 		    *)		RTLD_PRELOAD_VAR="LDR_PRELOAD";;
 		esac
 
+		# cfmakeraw is broken on AIX (and is not documented)
+		: ${ac_cv_func_cfmakeraw='no'}
+
 		# strnlen/strndup may be broken on AIX < 6 depending
 		# on the libc version, use our own.
 		if test $OSMAJOR -lt 6; then
diff --git a/configure.ac b/configure.ac
index bf345c24c..aa9dc0ce0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1894,6 +1894,9 @@ case "$host" in
 		    *)		RTLD_PRELOAD_VAR="LDR_PRELOAD";;
 		esac
 
+		# cfmakeraw is broken on AIX (and is not documented)
+		: ${ac_cv_func_cfmakeraw='no'}
+
 		# strnlen/strndup may be broken on AIX < 6 depending
 		# on the libc version, use our own.
 		if test $OSMAJOR -lt 6; then