$NetBSD: patch-bin_9c,v 1.2 2024/02/11 10:01:46 vins Exp $

Let pkgsrc define its own compiler.

--- bin/9c.orig	2022-09-12 14:35:36.000000000 +0000
+++ bin/9c
@@ -3,7 +3,7 @@
 test -f "$PLAN9/config" && . "$PLAN9/config"
 usegcc()
 {
-	cc=${CC9:-gcc}
+	cc=${CC9:-@CC@}
 	cflags=" \
 		-O2 \
 		-c \
@@ -60,7 +60,7 @@ quiet()
 
 useclang()
 {
-	cc=${CC9:-clang}
+	cc=${CC9:-@CC@}
 	cflags=" \
 		-O2 \
 		-c \
@@ -87,7 +87,7 @@ useclang()
 
 usexlc()
 {
-	cc=${CC9:-xlc_r}
+	cc=${CC9:-@CC@}
 	cflags=" \
 		-c \
 		-O2 \
@@ -103,15 +103,34 @@ usexlc()
 	cflags="$cflags $CC9FLAGS"
 }
 
-tag="${SYSNAME:-`uname`}-${CC9:-cc}"
+usesunpro()
+{
+    cc=${CC9:-@CC@} 
+	cflags=" \
+		-mt \
+		-g \
+		-c \
+		-xO3 \
+		-xCC \
+		-fast \
+		-errfmt \
+		-erroff=%none \
+	"
+}
+
+
+
+tag="${SYSNAME:-`uname`}-${CC9:-@CC@}"
 case "$tag" in
 *DragonFly*gcc*|*BSD*gcc*)	usegcc ;;
 *DragonFly*clang|*BSD*clang*)	useclang ;;
+*NetBSD*cc*|DragonFly*cc*)	usegcc ;;
+*OpenBSD*cc*|FreeBSD*cc*)	useclang ;;
 *Darwin*)
 		useclang
 		cflags="$cflags -g3 -m64"
 		;;
-*HP-UX*)	cc=${CC9:-cc}; cflags="-g -O -c -Ae" ;;
+*HP-UX*)	cc=${CC9:-@CC@}; cflags="-g -O -c -Ae" ;;
 *Linux*)	usegcc
 		case "${CC9:-gcc}" in
 		tcc)
@@ -120,9 +139,10 @@ case "$tag" in
 			;;
 		esac
 		;;
-*OSF1*)		cc=${CC9:-cc}; cflags="-g -O -c" ;;
-*SunOS*-cc)	cc=cc;
-		cflags="-mt -g -O -c -xCC -D__sun__"
+*OSF1*)		cc=${CC9:-@CC@}; cflags="-g -O -c" ;;
+*SunOS*-cc)
+		usesunpro
+		cflags="$cflags -D__sun__"
 		u=`uname`
 		v=`uname -r`
 		s=`echo $u$v | tr '. ' '__'`