From: Andi Kleen <ak@xxxxxxxxxxxxxxx> The primary goal of the script is to mangle linker command line arguments into something which gcc understands. Such as converting "-z now" into "-Wl,-z,now". The script was removed by commit 86879fd277e8 (scripts: remove obsolete gcc-ld script) as there was no use in the kernel. It had been added long time ago to support exactly these lto patches, so we need to add it back now. Since the removed version, it is improved a bit: * some missing linker and gcc command line arguments were added, and * when V=1 is specified, it prints the final gcc command line [js] rebase + commit message massage Cc: Masahiro Yamada <masahiroy@xxxxxxxxxx> Cc: Michal Marek <michal.lkml@xxxxxxxxxxx> Cc: Nick Desaulniers <ndesaulniers@xxxxxxxxxx> Cc: linux-kbuild@xxxxxxxxxxxxxxx Signed-off-by: Andi Kleen <ak@xxxxxxxxxxxxxxx> Signed-off-by: Martin Liska <mliska@xxxxxxx> Signed-off-by: Jiri Slaby <jslaby@xxxxxxx> --- scripts/gcc-ld | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100755 scripts/gcc-ld diff --git a/scripts/gcc-ld b/scripts/gcc-ld new file mode 100755 index 000000000000..13e85ece8d04 --- /dev/null +++ b/scripts/gcc-ld @@ -0,0 +1,40 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# run gcc with ld options +# used as a wrapper to execute link time optimizations +# yes virginia, this is not pretty + +ARGS="-nostdlib" + +for j in "$@" ; do + if [ "$j" = -v ] ; then + exec `$CC -print-prog-name=ld` -v + fi +done + +while [ "$1" != "" ] ; do + case "$1" in + -save-temps*|-m32|-m64) N="$1" ;; + -r) N="$1" ;; + -flinker-output*) N="$1" ;; + -[Wg]*) N="$1" ;; + -[olv]|-[Ofd]*|-nostdlib) N="$1" ;; + --end-group|--start-group|--whole-archive|--no-whole-archive|\ +--no-undefined|--hash-style*|--build-id*|--eh-frame-hdr|-Bsymbolic) + N="-Wl,$1" ;; + -[RTFGhIezcbyYu]*|\ +--script|--defsym|-init|-Map|--oformat|-rpath|\ +-rpath-link|--sort-section|--section-start|-Tbss|-Tdata|-Ttext|-soname|\ +--version-script|--dynamic-list|--version-exports-symbol|--wrap|-m|-z) + A="$1" ; shift ; N="-Wl,$A,$1" ;; + -[m]*) N="$1" ;; + -*) N="-Wl,$1" ;; + *) N="$1" ;; + esac + ARGS="$ARGS $N" + shift +done + +[ -n "$V" ] && echo >&2 $CC $ARGS + +exec $CC $ARGS -- 2.38.1
