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authorThomas Weißschuh <linux@weissschuh.net>2025-02-19 22:22:13 +0100
committerMasahiro Yamada <masahiroy@kernel.org>2025-03-15 21:19:44 +0900
commitdbdffaf50ff9cee3259a7cef8a7bd9e0f0ba9f13 (patch)
tree2dc6c7315759b9463a11db776b96059de8c3315d /Makefile
parent268d191abc57a89f4ed92efcb276aae54f86c88c (diff)
kbuild, rust: use -fremap-path-prefix to make paths relative
Remap source path prefixes in all output, including compiler diagnostics, debug information, macro expansions, etc. This removes a few absolute paths from the binary and also makes it possible to use core::panic::Location properly. Equivalent to the same configuration done for C sources in commit 1d3730f0012f ("kbuild: support -fmacro-prefix-map for external modules") and commit a73619a845d5 ("kbuild: use -fmacro-prefix-map to make __FILE__ a relative path"). Link: https://doc.rust-lang.org/rustc/command-line-arguments.html#--remap-path-prefix-remap-source-names-in-output Acked-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Tested-by: Gary Guo <gary@garyguo.net> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Diffstat (limited to 'Makefile')
-rw-r--r--Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index f2ec8d05c0f5..30242e731a0d 100644
--- a/Makefile
+++ b/Makefile
@@ -1068,6 +1068,7 @@ endif
# change __FILE__ to the relative path to the source directory
ifdef building_out_of_srctree
KBUILD_CPPFLAGS += $(call cc-option,-fmacro-prefix-map=$(srcroot)/=)
+KBUILD_RUSTFLAGS += --remap-path-prefix=$(srcroot)/=
endif
# include additional Makefiles when needed