From dcb97d12a4a6117546e453b455de53beabab7c9f Mon Sep 17 00:00:00 2001
From: Brent Cook <bcook@openbsd.org>
Date: Sun, 19 Apr 2015 14:55:25 -0500
Subject: use alternate cflags on AIX and HP-UX vendor compilers

---
 configure.ac | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 2cd9814..59542d0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -9,6 +9,9 @@ AC_CONFIG_MACRO_DIR([m4])
 
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 
+# This must be called before AC_PROG_CC
+USER_CFLAGS="$CFLAGS"
+
 AC_PROG_CC
 AC_PROG_CC_STDC
 AM_PROG_CC_C_O
@@ -20,6 +23,9 @@ CFLAGS="$CFLAGS -Wall -std=gnu99"
 case $host_os in
 	*aix*)
 		HOST_OS=aix
+		if [ $CC != "gcc" ]; then
+			CFLAGS="$USER_CFLAGS"
+		fi
 		AC_SUBST([PLATFORM_LDADD], ['-lperfstat -lpthread'])
 		;;
 	*cygwin*)
@@ -36,7 +42,11 @@ case $host_os in
 		;;
 	*hpux*)
 		HOST_OS=hpux;
-		CFLAGS="$CFLAGS -mlp64"
+		if [ $CC = "gcc" ]; then
+			CFLAGS="$CFLAGS -mlp64"
+		else
+			CFLAGS="-g -O2 +DD64 $USER_CFLAGS"
+		fi
 		CPPFLAGS="$CPPFLAGS -D_XOPEN_SOURCE=600 -D__STRICT_ALIGNMENT"
 		AC_SUBST([PLATFORM_LDADD], ['-lpthread'])
 		;;
-- 
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