Any -O argument will enable optimizations in GNU ld. We can use -O2
here, as this matches our compile flags. Note that this would also
enable additional optimizations if using the lld or gold linkers,
when compared to -O0.
This is no longer needed after 3bef7c22 in the mingw-w64 git repository,
which is first included in mingw-w64 v7.0.0.
As of the previous bump to our Guix time machine, we now use mingw-w64
v7.0.0.
- Add "--no-insert-timestamp" LDFLAG for x86_64-w64-mingw32 builds
"The option --no-insert-timestamp can be used to insert a zero value for
the timestamp, this ensuring that binaries produced from identical
sources will compare identically." - ld(1)
- Set "SetDateSave off" in NSIS script
From https://nsis.sourceforge.io/Docs/Chapter4.html#flags
"This command sets the file date/time saving flag which is used by the
File command to determine whether or not to save the last write date and
time of the file, so that it can be restored on installation. Valid
flags are 'on' and 'off'. 'on' is the default."
- Add commented out NSIS options for reproducibility debugging in NSIS
script
- Make ZIPs deterministic by reseting file modification times to
SOURCE_DATE_EPOCH using touch(1) (Reference:
https://reproducible-builds.org/docs/archives/)
- store_path() previously only worked for cross compilation packages, we
remove this assumption here
- Add CROSS_GCC_LIB variable which points to where gcc libs/headers are
located
- Add gcc libs/headers to our CROSS_*_PATH environment variables
- Check that all directories in CROSS_*_PATH are sane
