From 5971d0532c1a7be66796eda248454e008324967e Mon Sep 17 00:00:00 2001
From: Arun Thomas <arun@minix3.org>
Date: Wed, 29 Jun 2011 10:32:37 +0200
Subject: [PATCH] GCC build option for elf libs and usr.bin

---
 docs/UPDATING        | 4 ++--
 lib/elf_build.sh     | 2 +-
 lib/libelf/Makefile  | 4 ++--
 usr.bin/Makefile.inc | 4 ++--
 4 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/docs/UPDATING b/docs/UPDATING
index fc5cbd4b1..ff539f21f 100644
--- a/docs/UPDATING
+++ b/docs/UPDATING
@@ -3,8 +3,8 @@
 	make -C usr.bin/m4 install
 
 20110629:
-	You must install clang. It is now used to build some of
-	the userland utilities.
+	You must install clang. By default, it is used to build the
+	elf libraries and some userland utilities.
 
 20110628:
 	Since buildworld will also build the elf-libraries, you
diff --git a/lib/elf_build.sh b/lib/elf_build.sh
index b0cf857ee..6b03019af 100755
--- a/lib/elf_build.sh
+++ b/lib/elf_build.sh
@@ -2,7 +2,7 @@
 
 set -e
 
-export CC=clang
+export CC=${CC:-clang}
 export COMPILER_TYPE=gnu
 export PATH=$PATH:/usr/pkg/bin
 
diff --git a/lib/libelf/Makefile b/lib/libelf/Makefile
index 04425708c..8534a8881 100644
--- a/lib/libelf/Makefile
+++ b/lib/libelf/Makefile
@@ -1,8 +1,8 @@
 # $Id$
 
-# Requires clang and NBSD_LIBC
+# Requires NBSD_LIBC and clang/gcc (we default to using clang)
 NBSD_LIBC:= yes
-CC:= clang
+CC:=${CC:C/^cc/clang/}
 COMPILER_TYPE:= gnu
 
 LIB=	elf
diff --git a/usr.bin/Makefile.inc b/usr.bin/Makefile.inc
index ef03e0ef1..9b4467498 100644
--- a/usr.bin/Makefile.inc
+++ b/usr.bin/Makefile.inc
@@ -1,6 +1,6 @@
-# Require clang and NBSD_LIBC
+# Requires NBSD_LIBC and clang/gcc (we default to using clang)
 NBSD_LIBC:= yes
-CC:= clang
+CC:=${CC:C/^cc/clang/}
 COMPILER_TYPE:= gnu
 
 CPPFLAGS+= -D_NETBSD_SOURCE