[gentoo-commits] gentoo-x86 commit in eclass: toolchain-funcs.eclass

[Mike Frysinger (vapier)]

vapier      09/12/01 04:44:17

  Modified:             toolchain-funcs.eclass
  Log:
  tc-has-tls: new thread local storage test function

Revision  Changes    Path
1.97                 eclass/toolchain-funcs.eclass

file : http://sources.gentoo.org/viewcvs.py/gentoo-x86/eclass/toolchain-funcs.eclass?rev=1.97&view=markup
plain: http://sources.gentoo.org/viewcvs.py/gentoo-x86/eclass/toolchain-funcs.eclass?rev=1.97&content-type=text/plain
diff : http://sources.gentoo.org/viewcvs.py/gentoo-x86/eclass/toolchain-funcs.eclass?r1=1.96&r2=1.97

Index: toolchain-funcs.eclass
===================================================================
RCS file: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v
retrieving revision 1.96
retrieving revision 1.97
diff -u -r1.96 -r1.97
--- toolchain-funcs.eclass	27 Nov 2009 21:31:29 -0000	1.96
+++ toolchain-funcs.eclass	1 Dec 2009 04:44:17 -0000	1.97
@@ -1,6 +1,6 @@
 # Copyright 1999-2007 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
-# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.96 2009/11/27 21:31:29 vapier Exp $
+# $Header: /var/cvsroot/gentoo-x86/eclass/toolchain-funcs.eclass,v 1.97 2009/12/01 04:44:17 vapier Exp $
 
 # @ECLASS: toolchain-funcs.eclass
 # @MAINTAINER:
@@ -170,6 +170,35 @@
 	return $([[ ${host} == *-mint* ]])
 }
 
+# @FUNCTION: tc-has-tls
+# @USAGE: [-s|-c|-l] [toolchain prefix]
+# @DESCRIPTION:
+# See if the toolchain supports thread local storage (TLS).  Use -s to test the
+# compiler, -c to also test the assembler, and -l to also test the C library
+# (the default).
+tc-has-tls() {
+	local base="${T}/test-tc-tls"
+	cat <<-EOF > "${base}.c"
+	int foo(int *i) {
+		static __thread int j = 0;
+		return *i ? j : *i;
+	}
+	EOF
+	local flags
+	case $1 in
+		-s) flags="-S";;
+		-c) flags="-c";;
+		-l) ;;
+		-*) die "Usage: tc-has-tls [-c|-l] [toolchain prefix]";;
+	esac
+	: ${flags:=-fPIC -shared -Wl,-z,defs}
+	[[ $1 == -* ]] && shift
+	$(tc-getCC "$@") ${flags} "${base}.c" -o "${base}" >&/dev/null
+	local ret=$?
+	rm -f "${base}"*
+	return ${ret}
+}
+
 
 # Parse information from CBUILD/CHOST/CTARGET rather than
 # use external variables from the profile.