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Notes about issue records_build_flags in experimental

Identifier: records_build_flags
Suites: unstable / trixie / bookworm / bullseye / experimental
Description: Records $CFLAGS, which vary intentionally due to the «-fdebug-prefix-map=${BUILDPATH}=.»,
«-ffile-prefix-map=${BUILDPATH}=.» or «-fmacro-prefix-map=${BUILDPATH}=.» flags.
.
We have a patch pending to GCC to fix this issue centrally:
.
https://gcc.gnu.org/ml/gcc-patches/2016-11/msg00182.html
.
Though the patch is currently unlikely to be merged. If/when this
is accepted, this issue should be fixed for all packages and you
should not need to fix it specifically in your package.
.
There is also a work-in-progress patch to dpkg that could address this issue:
.
https://bugs.debian.org/985553
.
For more background information see:
.
https://alioth-lists.debian.net/pipermail/reproducible-builds/Week-of-Mon-20160822/006788.html
https://alioth-lists.debian.net/pipermail/reproducible-builds/Week-of-Mon-20160905/006984.html
https://alioth-lists.debian.net/pipermail/reproducible-builds/Week-of-Mon-20160912/007076.html
Packages in 'experimental' known to be affected by this issue:
(the 1/4 most-popular ones (within this issue) are underlined)

reproducible icon 18 reproducible packages in experimental/amd64: bash benchmark cubew cyrus-imapd gitlab hdf5 htslib insighttoolkit5 mplayer netcdf netdata osmo-hlr readline samtools tcl8.7 apache2# bind9# openssl+

FTBFS icon 3 FTBFS packages in experimental/amd64: libcgns yosys librep#+

FTBR icon 2 unreproducible packages in experimental/amd64: libtool pnetcdf+

 

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