From: Andi Kleen <ak@xxxxxxxxxxxxxxx>
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@xxxxxxxxxxxxxxx>
---
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
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