On 4/28/23 05:20, Khem Raj wrote:
This should help canonicalize the relative paths and symlinks
during cross compile, -fcanon-prefix-map is newly added in gcc-13+ [1]
[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108464#c8
Signed-off-by: Khem Raj <[email protected]>
---
meta/conf/bitbake.conf | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
index d94ffe1df9..453bef37a9 100644
--- a/meta/conf/bitbake.conf
+++ b/meta/conf/bitbake.conf
@@ -644,7 +644,8 @@ EXTRA_OEMAKE:prepend:task-install = "${PARALLEL_MAKEINST} "
# Optimization flags.
##################################################################
# Beware: applied last to first
-DEBUG_PREFIX_MAP ?=
"-fmacro-prefix-map=${S}=/usr/src/debug/${PN}/${EXTENDPE}${PV}-${PR} \
+DEBUG_PREFIX_MAP ?= "-fcanon-prefix-map \
+ -fmacro-prefix-map=${S}=/usr/src/debug/${PN}/${EXTENDPE}${PV}-${PR} \
-fdebug-prefix-map=${S}=/usr/src/debug/${PN}/${EXTENDPE}${PV}-${PR} \
-fmacro-prefix-map=${B}=/usr/src/debug/${PN}/${EXTENDPE}${PV}-${PR} \
-fdebug-prefix-map=${B}=/usr/src/debug/${PN}/${EXTENDPE}${PV}-${PR} \
Maybe we can take the opportunity to also cleanup DEBUG_PREFIX_MAP by
replacing debug/macro/canon with a single -ffile-prefix-map ?
From the gcc 13.1.1 manpage:
-ffile-prefix-map=old=new
When compiling files residing in directory old, record any
references to them in the result of the
compilation as if the files resided in directory new instead.
Specifying this option is equivalent to
specifying all the individual -f*-prefix-map options. This can be
used to make reproducible builds
that are location independent. Directories referenced by directives
are not affected by these options.
See also -fmacro-prefix-map, -fdebug-prefix-map,
-fprofile-prefix-map and -fcanon-prefix-map.
Jacob
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