From: Andi Kleen <andi@firstfloor.org>
To: linux-kernel@vger.kernel.org
Cc: sam@ravnborg.org, x86@kernel.org, linux-kbuild@vger.kernel.org,
Andi Kleen <ak@linux.intel.com>
Subject: [PATCH 11/20] Kbuild, lto: Add a gcc-ld script to let run gcc as ld
Date: Tue, 18 Feb 2014 15:28:49 +0100 [thread overview]
Message-ID: <1392733738-8290-12-git-send-email-andi@firstfloor.org> (raw)
In-Reply-To: <1392733738-8290-1-git-send-email-andi@firstfloor.org>
From: Andi Kleen <ak@linux.intel.com>
For LTO we need to run the link step with gcc, not ld.
Since there are a lot of linker options passed to it, add a gcc-ld wrapper
that wraps them as -Wl,
Signed-off-by: Andi Kleen <ak@linux.intel.com>
---
scripts/gcc-ld | 34 ++++++++++++++++++++++++++++++++++
1 file changed, 34 insertions(+)
create mode 100644 scripts/gcc-ld
diff --git a/scripts/gcc-ld b/scripts/gcc-ld
new file mode 100644
index 0000000..1e71ef3
--- /dev/null
+++ b/scripts/gcc-ld
@@ -0,0 +1,34 @@
+#!/bin/sh
+# run gcc with ld options
+# used as a wrapper to execute link time optimizations
+# yes virginia, this is not pretty
+
+case "${KBUILD_VERBOSE}" in
+*1*) set -x ;;
+esac
+
+ARGS="-nostdlib"
+
+while [ "$1" != "" ] ; do
+ case "$1" in
+ -save-temps|-m32|-m64) N="$1" ;;
+ -r) N="$1" ;;
+ -[Wg]*) N="$1" ;;
+ -[olv]|-[Ofd]*|-nostdlib) N="$1" ;;
+ --end-group|--start-group)
+ N="-Wl,$1" ;;
+ -[RTFGhIezcbyYu]*|\
+--script|--defsym|-init|-Map|--oformat|-rpath|\
+-rpath-link|--sort-section|--section-start|-Tbss|-Tdata|-Ttext|\
+--version-script|--dynamic-list|--version-exports-symbol|--wrap|-m)
+ A="$1" ; shift ; N="-Wl,$A,$1" ;;
+ --param) shift ; N="--param $1" ;;
+ -[m]*) N="$1" ;;
+ -*) N="-Wl,$1" ;;
+ *) N="$1" ;;
+ esac
+ ARGS="$ARGS $N"
+ shift
+done
+
+exec $CC $ARGS
--
1.8.5.2
next prev parent reply other threads:[~2014-02-18 14:29 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-18 14:28 Link Time Optimization patchkit v3 Andi Kleen
2014-02-18 14:28 ` [PATCH 01/20] x86, lto: Disable LTO for the x86 VDSO Andi Kleen
2014-02-18 14:28 ` [PATCH 02/20] lto: Disable LTO for hweight functions Andi Kleen
2014-02-18 14:28 ` [PATCH 03/20] lto: Make asmlinkage __visible Andi Kleen
2014-02-18 14:28 ` [PATCH 04/20] lto, workaround: Add workaround for initcall reordering Andi Kleen
2014-02-18 14:28 ` [PATCH 05/20] lto: Handle LTO common symbols in module loader Andi Kleen
2014-02-18 14:53 ` Konrad Rzeszutek Wilk
2014-02-18 14:28 ` [PATCH 06/20] lto: Disable LTO for sys_ni Andi Kleen
2014-02-18 14:28 ` [PATCH 07/20] lto: Don't let LATENCYTOP and LOCKDEP select KALLSYMS_ALL Andi Kleen
2014-02-18 14:28 ` [PATCH 08/20] Kbuild, lto, workaround: Don't warn for initcall_reference in modpost Andi Kleen
2014-02-18 14:28 ` [PATCH 09/20] Kbuild, lto: Drop .number postfixes " Andi Kleen
2014-02-18 14:28 ` [PATCH 10/20] Kbuild, lto: add ld-version and ld-ifversion macros Andi Kleen
2014-02-18 14:28 ` Andi Kleen [this message]
2014-02-18 14:28 ` [PATCH 12/20] Kbuild, lto: Disable LTO for asm-offsets.c Andi Kleen
2014-02-18 14:28 ` [PATCH 13/20] Kbuild, lto: Set TMPDIR for LTO v2 Andi Kleen
2014-02-18 14:35 ` H. Peter Anvin
2014-02-18 14:28 ` [PATCH 14/20] Kbuild, lto: Handle basic LTO in modpost Andi Kleen
2014-02-18 14:28 ` [PATCH 15/20] Kbuild, lto: Fix single pass kallsyms for LTO Andi Kleen
2014-02-18 14:28 ` [PATCH 16/20] Kbuild, lto: Add Link Time Optimization support v2 Andi Kleen
2014-02-18 14:28 ` [PATCH 17/20] Kbuild, bloat-o-meter: Ignore .lto_priv postfix Andi Kleen
2014-02-18 14:51 ` Konrad Rzeszutek Wilk
2014-02-18 14:28 ` [PATCH 18/20] lto: Mark spinlocks noinline when inline spinlocks are disabled Andi Kleen
2014-02-18 14:28 ` [PATCH 19/20] lto, module: Warn about modules that are not fully LTOed Andi Kleen
2014-02-18 14:50 ` Konrad Rzeszutek Wilk
2014-02-18 18:52 ` Andi Kleen
2014-02-18 14:28 ` [PATCH 20/20] lto: Don't inline __const_udelay Andi Kleen
2014-02-18 14:34 ` Link Time Optimization patchkit v3 H. Peter Anvin
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