From e89f127b9eeccb4d1fc468e57a6e1cda2ab636ad Mon Sep 17 00:00:00 2001
From: Ingo Weinhold <ingo_weinhold@gmx.de>
Date: Sun, 19 Jun 2011 13:43:24 +0200
Subject: [PATCH] KernelLd rule: opt-out linking against libsupc++

Introduced HAIKU_NO_LIBSUPC++ variable on target to prevent linking
against libsupc++.
---
 build/jam/KernelRules | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/build/jam/KernelRules b/build/jam/KernelRules
index f0dba32319..25b2260bf1 100644
--- a/build/jam/KernelRules
+++ b/build/jam/KernelRules
@@ -44,8 +44,13 @@ rule KernelLd
 	LINKFLAGS on $(1) = $(4) ;
 	if $(3) { LINKFLAGS on $(1) += --script=$(3) ; }
 
-	# Remove any preset LINKLIBS, but link against libgcc.a
-	LINKLIBS on $(1) = $(TARGET_STATIC_LIBSUPC++) $(TARGET_GCC_LIBGCC) ;
+	# Remove any preset LINKLIBS, but link against libgcc.a. Linking against
+	# libsupc++ is opt-out.
+	local libs ;
+	if ! [ on $(1) return HAIKU_NO_LIBSUPC++ ] {
+		libs += $(TARGET_STATIC_LIBSUPC++) ;
+	}
+	LINKLIBS on $(1) =  $(libs) $(TARGET_GCC_LIBGCC) ;
 
 	# TODO: Do we really want to invoke SetupKernel here? The objects should
 	# have been compiled with KernelObjects anyway, so we're doing that twice.