Re: [OE-core] [PATCH] cargo-c: fix debug symbols containing TMPDIR references

[Yash Shinde <Yash.Shinde@windriver.com>]

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On 08-10-2025 23:13, Frédéric Martinsons wrote:
> Do you think it is cargo-c specific? Or all recipes which inherits 
> cargo class must have that?
>
The error logs pointed out to cargo-c binaries only.

For cargo, DEBUG_PREFIX_MAP is already defined:
https://git.yoctoproject.org/poky/tree/meta/recipes-devtools/rust/cargo_1.90.0.bb#n22

This remaps the rust source path i.e $RUSTSRC.
However, cargo-c uses a separate source installation directory 
($CARGO_HOME) which isn't covered
by DEBUG_PREFIX_MAP.



Regards,
Yash
> Le mer. 8 oct. 2025, 15:01, Yash Shinde via lists.openembedded.org 
> <https://urldefense.com/v3/__http://lists.openembedded.org__;!!AjveYdw8EvQ!eT6NUyxobn9jkx3pHarcK-637_es2YI-QyHcS2uLhyDXsf2bIzqgfXyiGljcR3YtFoalO9cR6w0vcM-0RUYHKsb9Ca4-IUA$> 
> <Yash.Shinde=windriver.com@lists.openembedded.org> a écrit :
>
>     From: Yash Shinde <Yash.Shinde@windriver.com>
>
>     When building cargo-c with DEBUG mode, QA checks fail due to
>     absolute paths from the build environment (TMPDIR) being embedded into
>     the debug symbols/binaries. This causes issues such as:
>
>       ERROR: do_package_qa: File /usr/bin/.debug/cargo-capi contains
>     reference to TMPDIR [buildpaths]
>       ERROR: do_package_qa: File /usr/bin/.debug/cargo-cinstall
>     contains reference to TMPDIR [buildpaths]
>       ERROR: do_package_qa: File /usr/bin/.debug/cargo-cbuild contains
>     reference to TMPDIR [buildpaths]
>       ERROR: do_package_qa: File /usr/bin/.debug/cargo-ctest contains
>     reference to TMPDIR [buildpaths]
>
>     To fix this, pass an additional -ffile-prefix-map option to
>     DEBUG_PREFIX_MAP to
>     ensure that paths under `${CARGO_HOME}` are remapped to
>     `${TARGET_DBGSRC_DIR}`.
>     This ensures debug info is reproducible and does not leak
>     host-specific paths.
>
>     Signed-off-by: Yash Shinde <Yash.Shinde@windriver.com>
>     ---
>      meta/recipes-devtools/rust/cargo-c_0.10.16+cargo-0.91.0.bb
>     <https://urldefense.com/v3/__http://cargo-0.91.0.bb__;!!AjveYdw8EvQ!eT6NUyxobn9jkx3pHarcK-637_es2YI-QyHcS2uLhyDXsf2bIzqgfXyiGljcR3YtFoalO9cR6w0vcM-0RUYHKsb90kr3UWQ$>
>     | 2 ++
>      1 file changed, 2 insertions(+)
>
>     diff --git
>     a/meta/recipes-devtools/rust/cargo-c_0.10.16+cargo-0.91.0.bb
>     <https://urldefense.com/v3/__http://cargo-0.91.0.bb__;!!AjveYdw8EvQ!eT6NUyxobn9jkx3pHarcK-637_es2YI-QyHcS2uLhyDXsf2bIzqgfXyiGljcR3YtFoalO9cR6w0vcM-0RUYHKsb90kr3UWQ$>
>     b/meta/recipes-devtools/rust/cargo-c_0.10.16+cargo-0.91.0.bb
>     <https://urldefense.com/v3/__http://cargo-0.91.0.bb__;!!AjveYdw8EvQ!eT6NUyxobn9jkx3pHarcK-637_es2YI-QyHcS2uLhyDXsf2bIzqgfXyiGljcR3YtFoalO9cR6w0vcM-0RUYHKsb90kr3UWQ$>
>     index fd15f02da9..5ef68e13c2 100644
>     --- a/meta/recipes-devtools/rust/cargo-c_0.10.16+cargo-0.91.0.bb
>     <https://urldefense.com/v3/__http://cargo-0.91.0.bb__;!!AjveYdw8EvQ!eT6NUyxobn9jkx3pHarcK-637_es2YI-QyHcS2uLhyDXsf2bIzqgfXyiGljcR3YtFoalO9cR6w0vcM-0RUYHKsb90kr3UWQ$>
>     +++ b/meta/recipes-devtools/rust/cargo-c_0.10.16+cargo-0.91.0.bb
>     <https://urldefense.com/v3/__http://cargo-0.91.0.bb__;!!AjveYdw8EvQ!eT6NUyxobn9jkx3pHarcK-637_es2YI-QyHcS2uLhyDXsf2bIzqgfXyiGljcR3YtFoalO9cR6w0vcM-0RUYHKsb90kr3UWQ$>
>     @@ -12,6 +12,8 @@ SRC_URI =
>     "crate://crates.io/cargo-c/${PV};name=cargo-c
>     <https://urldefense.com/v3/__http://crates.io/cargo-c/$*7BPV*7D;name=cargo-c__;JSU!!AjveYdw8EvQ!eT6NUyxobn9jkx3pHarcK-637_es2YI-QyHcS2uLhyDXsf2bIzqgfXyiGljcR3YtFoalO9cR6w0vcM-0RUYHKsb9-NilF0c$>
>     \
>      SRC_URI[cargo-c.sha256sum] =
>     "17d431789b050b0fcf678455dfd5ceb7e5b45cd806140f8fe03b16b995d6cbff"
>      S = "${CARGO_VENDORING_DIRECTORY}/cargo-c-${PV}"
>
>     +DEBUG_PREFIX_MAP +=
>     "-ffile-prefix-map=${CARGO_HOME}=${TARGET_DBGSRC_DIR}"
>     +
>      inherit cargo cargo-update-recipe-crates pkgconfig
>
>      DEPENDS = "openssl curl"
>     -- 
>     2.49.0
>
>
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-- 
Regards,
Yash Shinde

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