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author | Khem Raj <raj.khem@gmail.com> | 2020-11-08 16:02:09 -0800 |
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committer | Richard Purdie <richard.purdie@linuxfoundation.org> | 2020-11-11 10:04:34 +0000 |
commit | 770c69c51f87223eee7bd968fd28a5dc15a955d6 (patch) | |
tree | fbd5f6303a22b4e3c486a51905522c019c5b4d91 /meta/conf/distro | |
parent | 2ccaa99871af8cb5b41e12a619e1bfbea4ca6f33 (diff) | |
download | openembedded-core-contrib-770c69c51f87223eee7bd968fd28a5dc15a955d6.tar.gz |
lto.inc: Add -ffat-lto-objects and -fuse-linker-plugin
This helps to improve LTO and ensure the libs can be linked with non-LTO
objects too
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta/conf/distro')
-rw-r--r-- | meta/conf/distro/include/lto.inc | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/meta/conf/distro/include/lto.inc b/meta/conf/distro/include/lto.inc index fe0f6c9f44..d7fea26c64 100644 --- a/meta/conf/distro/include/lto.inc +++ b/meta/conf/distro/include/lto.inc @@ -20,7 +20,16 @@ LTO_pn-libbsd = "" # Override it for additional or different options if needed e.g. # with clang thin-lto might be better for compile speed -LTO ?= "-flto" +# +# ffat-lto-objects +# object files that contain both the intermediate +# language and the object code. This makes them +# usable for both LTO linking and normal linking +# +# -fuse-linker-plugin +# ensures that libraries participate in LTO by supplying intermediate +# code from .a files to linker +LTO ?= "-flto -ffat-lto-objects -fuse-linker-plugin " SELECTED_OPTIMIZATION_append = "${@bb.utils.contains('DISTRO_FEATURES', 'lto', ' ${LTO}', '', d)}" TARGET_LDFLAGS_append_class-target = "${@bb.utils.contains('DISTRO_FEATURES', 'lto', ' ${LTO}', '', d)}" |