From 673d8593b7ef274dadbfff97fd641e3c563fc716 Mon Sep 17 00:00:00 2001
From: Tony Cook <tony@develop-help.com>
Date: Sat, 9 Apr 2011 00:05:24 +1000
Subject: check --whole-archive is supported before using it

netbsd for pre 4.6 gcc requires --whole-archive to build shared
libraries, but this is rejected and not required in 4.6.0.

Simply changing the option to -Wl,--whole-archive works on gcc 4.6.0
but fails for the system cc on NetBSD 5.1/x64.
---
 hints/netbsd.sh | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'hints/netbsd.sh')

diff --git a/hints/netbsd.sh b/hints/netbsd.sh
index d812f60fea..c64be440e0 100644
--- a/hints/netbsd.sh
+++ b/hints/netbsd.sh
@@ -35,7 +35,15 @@ case "$osvers" in
 		d_dlopen=$define
 		d_dlerror=$define
 		cccdlflags="-DPIC -fPIC $cccdlflags"
-		lddlflags="--whole-archive -shared $lddlflags"
+		lddlflags="-shared $lddlflags"
+		# gcc 4.6 doesn't support --whole-archive, but check for it
+		# if the user chooses a new compiler later, this is pointless
+		echo 'int f(void) { return 0; }' >try.c
+		if ${cc:-cc} $cccdlflags -c try.c -otry.o 2>&1 &&
+                   ${cc:-cc} --whole-archive $lddlflags try.o -otry.so 2>&1 ; then
+		    lddlflags="--whole-archive $lddlflags"
+		fi
+		rm try.c try.o try.so 2>/dev/null
 		rpathflag="-Wl,-rpath,"
 		case "$osvers" in
 		1.[0-5]*)
-- 
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