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Merge #13732: Depends: Fix Qt's rcc determinism

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6b5506a286 Fix Qt's rcc determinism for depends/gitian (Fuzzbawls)

Pull request description:

  With the update to Qt 5.9 having been merged, Qt's `rcc` tool now embeds a file's last modified time in it's output. Since the build system generates temporary files for all locale translations (`*.qm` files) at build time, the resulting `qrc_bitcoin_locale.cpp` file was always being generated in a non-deterministic way.

  This is a backport of https://bugreports.qt.io/browse/QTBUG-62511, which is included in Qt versions 5.11+, that allows for an environment variable (`QT_RCC_SOURCE_DATE_OVERRIDE`) to override the behavior described above. This environment variable is in turn set in the gitian descriptors, as that is where determinism is vital for release purposes.

  Prior to this, the `qt_libbitcoinqt_a-qrc_bitcoin_locale.o` object file (included into `libbitcoinqt.a`) was returning a different `sha256sum` for each and every build, regardless of file contents change, thus breaking determinism in the resulting binaries.

  This should fix #13731

Tree-SHA512: 174017e41f9afc3950ef54a9419de81577ec900db9aec3c78ccd3d879c6aecaaeb944fde0615b933f43e6ca9d7898a27ec071cdd0b91cb772755a3012de96725
This commit is contained in:
MarcoFalke
2018-07-29 08:06:40 -04:00
parent ad51e1372b 6b5506a286
commit e8ffec69f7
5 changed files with 21 additions and 1 deletions
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contrib/gitian-descriptors/gitian-osx.yml
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@@ -40,6 +40,7 @@ script: |
FAKETIME_PROGS="ar ranlib date dmg genisoimage"
export QT_RCC_TEST=1
export QT_RCC_SOURCE_DATE_OVERRIDE=1
export GZIP="-9n"
export TAR_OPTIONS="--mtime="$REFERENCE_DATE\\\ $REFERENCE_TIME""
export TZ="UTC"