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| author | Masahiro Yamada <masahiroy@kernel.org> | 2021-08-19 09:57:37 +0900 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2021-09-03 08:17:20 +0900 |
| commit | 8f1305124ea48943d1dd07683ed4f82c69b232ee (patch) | |
| tree | edc931cae96df457c7af9a6d53f22436e4bab1a6 /scripts/link-vmlinux.sh | |
| parent | a8390ba9ddce15242a41ca04d097b75fd54fd63f (diff) | |
| download | linux-8f1305124ea48943d1dd07683ed4f82c69b232ee.tar.gz linux-8f1305124ea48943d1dd07683ed4f82c69b232ee.tar.bz2 linux-8f1305124ea48943d1dd07683ed4f82c69b232ee.zip | |
kbuild: merge vmlinux_link() between the ordinary link and Clang LTO
When Clang LTO is enabled, vmlinux_link() reuses vmlinux.o instead of
re-linking ${KBUILD_VMLINUX_OBJS} and ${KBUILD_VMLINUX_LIBS}.
That is the only difference here, so merge the similar code.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'scripts/link-vmlinux.sh')
| -rwxr-xr-x | scripts/link-vmlinux.sh | 30 |
1 files changed, 14 insertions, 16 deletions
diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh index 36ef7b37fc5d..a6c4d0bce3ba 100755 --- a/scripts/link-vmlinux.sh +++ b/scripts/link-vmlinux.sh @@ -154,12 +154,23 @@ vmlinux_link() local objects local strip_debug local map_option + local objs + local libs info LD ${output} # skip output file argument shift + if [ -n "${CONFIG_LTO_CLANG}" ]; then + # Use vmlinux.o instead of performing the slow LTO link again. + objs=vmlinux.o + libs= + else + objs="${KBUILD_VMLINUX_OBJS}" + libs="${KBUILD_VMLINUX_LIBS}" + fi + # The kallsyms linking does not need debug symbols included. if [ "$output" != "${output#.tmp_vmlinux.kallsyms}" ] ; then strip_debug=-Wl,--strip-debug @@ -170,22 +181,9 @@ vmlinux_link() fi if [ "${SRCARCH}" != "um" ]; then - if [ -n "${CONFIG_LTO_CLANG}" ]; then - # Use vmlinux.o instead of performing the slow LTO - # link again. - objects="--whole-archive \ - vmlinux.o \ - --no-whole-archive \ - ${@}" - else - objects="--whole-archive \ - ${KBUILD_VMLINUX_OBJS} \ - --no-whole-archive \ - --start-group \ - ${KBUILD_VMLINUX_LIBS} \ - --end-group \ - ${@}" - fi + objects="--whole-archive ${objs} --no-whole-archive \ + --start-group ${libs} --end-group \ + $@" ${LD} ${KBUILD_LDFLAGS} ${LDFLAGS_vmlinux} \ ${strip_debug#-Wl,} \ |