CVS commit: src/external/gpl3/gcc/dist/gcc

["Christos Zoulas" <christos%netbsd.org@localhost>]

Module Name:    src
Committed By:   christos
Date:           Sat Nov 14 21:24:03 UTC 2020

Modified Files:
        src/external/gpl3/gcc/dist/gcc: file-prefix-map.c

Log Message:
PR/55802: Andreas Gustafsson: Unbreak reproducible builds.

For reproducible builds to work we need to have a consistent command
line (because the command line gets recorded in dwarf). So we can't
do:

    -ffile-prefix-map=/joe/random/src=/usr/src

because then /joe/random/src gets recorded. We do instead:

    -ffile-prefix-map=\$NETBSDSRCDIR=/usr/src

The patch restores the environment variable parsing that got lost
in the last 2 gcc upgrades.


To generate a diff of this commit:
cvs rdiff -u -r1.4 -r1.5 src/external/gpl3/gcc/dist/gcc/file-prefix-map.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.