The Minimalist Gnu for Windows distribution comes with support for
the traditional msvcrt libc, as well as ucrt64 libc. The latter
being the newer universal compiler runtime. We follow the msys2
environment naming convention[1]:
| name | toolchain | arch | libc | libc++ |
|------------|-----------|---------|--------|-----------|
| mingw32 | gcc | i686 | msvcrt | libstdc++ |
| mingw64 | gcc | x86_64 | msvcrt | libstdc++ |
| ucrt64 | gcc | x86_64 | ucrt | libstdc++ |
| clang32 | llvm | i686 | ucrt | libc++ |
| clang64 | llvm | x86_64 | ucrt | libc++ |
| clangarm64 | llvm | aarch64 | ucrt | libc++ |
For now nixpkgs only supports the first three with this commit.
--
[1]: https://www.msys2.org/docs/environments/
This commit allows `gccCrossStageStatic` to build dynamically-linked
libraries. Since is no longer restricted to building static
libraries its name is no longer appropriate, and this commit also
renames it to the more-accurate `gccWithoutTargetLibc`.
By default, you can't build a gcc that knows how to create dynamic
libraries unless you have already built the targetPlatform libc.
Because of this, our gcc cross-compiler is built in two stages:
1. Build a cross-compiler (gccCrossStageStatic) that can build
only static libraries.
2. Use gccCrossStageStatic to compile the targetPlatform libc.
3. Use the targetPlatform libc to build a fully-capable cross
compiler.
You might notice that this pattern looks very similar to what we do
with `xgcc` in the stdenv bootstrap. Indeed it is! I would like to
work towards getting the existing stdenv bootstrap to handle cross
compilers as well. However we don't want to cripple `stdenv.xgcc`
by taking away its ability to build dynamic libraries.
It turns out that the only thing gcc needs the targetPlatform libc
for is to emit a DT_NEEDED for `-lc` into `libgcc.so`. That's it!
And since we don't use `gccCrossStageStatic` to build anything other
than libc, it's safe to omit the `DT_NEEDED` because that `libgcc`
will never be loaded by anything other than `libc`. So `libc` will
already be in the process's address space.
Other people have noticed this; crosstool-ng has been using this
approach for a very long time:
36ad0b17a7/scripts/build/cc/gcc.sh (L638-L640)
Upstream `gcc-13` merged `mcfgthreads` support with a caveat: it's
headers interface is not compatible with the patch `nixpkgs` was
carrying in `gcc-12` and before.
To keep both new (`gcc13`) and old (`_pre_gcc13`) version I held back
previous `windows.mcfgthreads` attribute as
`windows.mcfgthreads_pre_gcc_13`. It is used for `gcc` before 13.
The change fixes the build of `pkgsCross.mingwW64.stdenv` itself and
example program:
$ nix build --impure --expr 'with import ./. {}; pkgsCross.mingwW64.re2c.override { stdenv = pkgsCross.mingwW64.gcc11Stdenv; }'
Without the change build frequently fails on `gnumake-4.4` as:
x86_64-w64-mingw32-dlltool: cannot delete libmsvcr120d_defs02133.o: No such file or directory
x86_64-w64-mingw32-dlltool: cannot delete libmsvcr120d_defs02134.o: No such file or directory
Pull upstream patches that fix temporary file collisions and add
missing dll dependencies.
With 0507725 "setup-hooks/strip.sh: run RANLIB on static
archives after stripping" it should now be safe to run strip
on wider range of .a files.
mingw-w64 is a good example where a reference was preserved
to gcc from intermediate stage. Enabling stripping by default
decreases `pkgsCross.mingw32` closure for 20%:
Before:
$ nix path-info -rsSh $(nix-build -A pkgsCross.mingw32.stdenv)
...
/nix/store/qzhkidff0wxhqf2gi97ng6qismzvpnbp-stdenv-linux 43.6K 1.0G
After:
$ nix path-info -rsSh $(nix-build -A pkgsCross.mingw32.stdenv)
...
/nix/store/fj4dv1n3sa3jgcb1j3nwn6njsf943n48-stdenv-linux 43.6K 792.4M
This will begin the process of breaking up the `useLLVM` monolith. That
is good in general, but I hope will be good for NetBSD and Darwin in
particular.
Co-authored-by: sterni <sternenseemann@systemli.org>
PR #115603 / 8ad96b7786 introduced a
syntax error by introducing an '' inside an indented string and thus a
syntax error. Was merged despite the failing ofborg check.
Fixes the evaluation of packages in pkgs/os-specific/windows that
weren't updated to include a new lib parameter after the refactor from
stdenv.lib -> lib (#109490).
I originally only intended this change to fix
`pkgsCross.mingw32.buildPackages.gcc` & `pkgsCross.mingwW64.buildPackages.gcc`
to support building wine with `mingwSupport`, but I noticed this was
an issue for all updated windows packages. Most of these other
packages fail to build for other reasons.
continuation of #109595
pkgconfig was aliased in 2018, however, it remained in
all-packages.nix due to its wide usage. This cleans
up the remaining references to pkgs.pkgsconfig and
moves the entry to aliases.nix.
python3Packages.pkgconfig remained unchanged because
it's the canonical name of the upstream package
on pypi.
Version 6.0.0 brings better Win32 API coverage and bugfixes.
It's been used in various distros long enough to be considered stable.
Latest version 7.0.0 hasn't received extensive testing yet.
Announce mail:
https://sourceforge.net/p/mingw-w64/mailman/message/36416777/
