The explanation for the conditional introduced by
61d9f201ba is longer than a reasonable
inline comment should be. It directed the reader to use `git blame`,
but that tends to bitrot. Let's point the user to a specific nixpkgs
git hash.
This commit cannot be squashed into the previous commit, because a
commit cannot mention its own commit-hash (without performaing an
expensive double-sha1 preimage attack, of course).
boost-context changed its name for mips from "mips1" to "mips" in this
commit:
6edc8184a7
however the native-build code to detect the local architecture still
reports "mips1":
67c074b249/boostcpp.jam (L637)
Therefore native builds of boost-context on mips must specify
architecture= explicitly; without this you will get link failures
"undefined reference to `jump_fcontext`" in code that uses
boost-context.
Currently the "cross compile" codepath, which provides explicit
architecture/abi/address-model/binary-format/os parameters, is
prefixed by this comment:
```
# TODO: make this unconditional
```
This commit does so, at least if `isMips`.
This commit is needed in order for native builds of nix to succeed on
mips.
This commit makes two changes:
1. Boost changed its taxonomy for architecture names between the 1.77 and
1.78 releases, in this commit:
6edc8184a7
2. During the review of #161162 I [was asked about][1] the source of
the [mips64-context.patch][2] that I had included in the original
version of the PR. I searched through the boost-context revision
history and found [a nearly identical patch][3], which I
substituted in the final, merged version of the PR.
As it turns out, my [mips64-context.patch][2] was an earlier
revision of what was eventually accepted to boost-context. The
only difference between the two patches is the name they use:
mips64 vs mips1.
When switching to the accepted version of the boost patch, I should
have also updated libraries/boost/generic.nix to change mips64 to
mips1. This commit does that.
[1]: https://github.com/NixOS/nixpkgs/pull/161162#discussion_r847903087
[2]: https://raw.githubusercontent.com/a-m-joseph/nixpkgs/1ca5025945470ce96408552b9117674b12efaf04/pkgs/development/libraries/boost/mips64-context.patch
[3]: e3f744a186.patch
Prior needsUserConfig setting is unconditionally applied for darwin.
This is not valid for static builds and should only be set for dynamically linked darwin builds.
There is an edge case when cross compiling where the auto detection
script would not correctly recognize the compiler (as it is only
good at recognizing native compilers, really, which we don't have
anymore since we don't need the build->build one anymore).
If bootstrap.sh doesn't detect the compiler correctly, it'll generate
a project-config.jam with a syntax error which breaks the build in a
hard to spot way: only a warning is displayed after configuring, the
build will appear to run normally until it fails quietly just before
installing. By providing it explicitly, we can prevent this.
If we build two things in one derivation, it becomes more complicated
and its build time is extended. Therefore we should avoid this if
possible. There's a good opportunity for this with boost: We have
boost-build packaged already. This has the additional benefit that
we can get rid of $CC_FOR_BUILD entirely in boost, meaning we don't
need to rely on (as many) hacks to make boost understand our way of
cross compiling.
Unfortunately boost-build is not backwards compatible, so we need to
build a specific boost-build for each boost derivation (the number
could probably be reduced, but I'm not interested in testing a lot
of boost builds at the moment).
Additionally we fix a few cross compilation problems:
- boost couldn't cope with different types of compilers for native
and cross (as happens if useLLVM is true). Since we only use one
of them per derivation, this is no longer an issue.
- boost didn't find the cross ar and ranlib for compilation (since
it doesn't check $AR or $RANLIB). Instead it used plain ar and
ranlib form $PATH which were the native ones before. This is now
fixed by setting these tools explicitly in user-config.jam (and
no longer providing the native tools).
With these changes, pkgsLLVM.boost builds.
On darwin, instead of patching the clang-darwin.jam definition, we
instead supply -rpath $out/lib via <linkflags> which causes the
correct directory to be added to the libraries' rpaths, so that
they find each other.
Use the attribute mpi to provide a system wide default MPI
implementation. The default is openmpi (as before).
This now allows for overriding the MPI implentation by using
the overlay mechanism. Build all packages with mpich instead
of the default openmpi can now be achived like this:
self: super:
{
mpi = super.mpich;
}
All derivations that have been using "mpi ? null" to provide optional
building with MPI have been change in the following way to allow for
optional builds with MPI:
{ ...
, mpi
, useMpi ? false
}
We can use use `stdenv.hostPlatform.isStatic` instead, and move the
logic per package. The least opionated benefit of this is that it makes
it much easier to replace packages with modified ones, as there is no
longer any issue of overlay order.
CC @FRidh @matthewbauer
Boost generates its installed cmake configuration using custom logic
in its own build system; while this logic *knows* where it should be
installed, the generated config overrides the correct information with
new paths based on the location of the cmake configuration file in an
attempt to let the package be relocated after installation.
This patch simply undoes that.
Users who want to patch boost may put a postInstall hook in an overlay, which
requires that that expression runs them on the buildPhase and installPhase.
darwin-no-system-python.patch does not apply cleany on Boost 1.55's
sources. Fix this patch file for Boost 1.55, making it build
successfully on macOS.
He prefers to contribute to his own nixpkgs fork triton.
Since he is still marked as maintainer in many packages
this leaves the wrong impression he still maintains those.
