From: Thomas Weißschuh linux@weissschuh.net
[ Upstream commit dbdffaf50ff9cee3259a7cef8a7bd9e0f0ba9f13 ]
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-pre... 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 Signed-off-by: Sasha Levin sashal@kernel.org --- Makefile | 1 + 1 file changed, 1 insertion(+)
diff --git a/Makefile b/Makefile index 8b6764d44a610..c4eeb97ab3df2 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