On Fri, May 26, 2023 at 10:27 PM Jacob Kroon <[email protected]> wrote: > > 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 ?
Yes, somewhere I had such a patch and I dropped it from my queue IIRC it was for clang alone maybe but it is not a simple replacement, we have to adjust some recipes to this option, > > 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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