Pull #320261 introduced the possibility to consistently override
dependencies within an llvm package set. I think #325175 accidentally
dropped this, so reinstate it.
Signed-off-by: Peter Waller <p@pwaller.net>
Now most packages in the llvm suite are built as separate derivations.
The exceptions are:
* compiler-rt must currently be built with llvm. This increases llvm's
size by 6 MB
* clang-tools-extra must be built with clang
In addition, the top-level llvm attribute is defaulted to llvm 3.4, and
llvm 3.3 must be accessed by the llvm_33 attribute. This is to make the
out-of-date packages obvious in the hope that eventually all will be
updated to work with 3.4 and 3.3 can be removed. I think we should keep
this policy in the future (latest llvm gets top-level name, the rest are
versioned until they can be removed).
The llvm packages (except libc++, which exception I will try to remove
on the next update) can all be accessed via the llvmPackages attribute,
and there are also aliases for the packages that already existed (llvm,
clang, and dragonegg).
Signed-off-by: Shea Levy <shea@shealevy.com>
Some packages in the llvm suite (e.g. compiler-rt) cannot be built
separate from the build of llvm, and while some others (e.g. clang) can
the combined build is much better tested (we've had to work around
annoying issues before). So this puts llvm, clang, clang-tools-extra,
compiler-rt, lld, lldb, and polly all into one big build (llvmFull).
This build includes a static llvm, as dynamic is similarly less tested
and has known failures.
This also updates libc++ and dragonegg. libc++ now builds against
libc++abi as a separate package rather than building it during the
libc++ build.
The clang purity patch is gone. Instead, we simply set --sysroot to
/var/empty for pure builds, as all impure paths are either looked up in
the gcc prefix (which we hard-code at compile time) or in the sysroot.
This also means that if NIX_ENFORCE_PURITY is 0 then clang will look in
the normal Linux paths by default, which is the proper behavior IMO.
polly required an updated isl. When stdenv-updates is merged, perhaps we
can update the isl used by gcc and avoid having two versions.
Since llvm on its own is now separate from the llvm used by clang, I've
removed myself as maintainer from llvm and will leave maintenance of
that to those who are interested in llvm separate from clang.
Signed-off-by: Shea Levy <shea@shealevy.com>
The 3.4 code was tested preliminary in x-updates,
described by 2e4eab1228.
Updates to llvm break builds of dependent packages (in all cases I've seen),
and often upstream isn't too fast in porting to the newest version.
Consequently, it seems better to keep more versions (two ATM),
both in one file to share eventual changes.
Also, using versioned llvm_* attributes is proposed because of this.
Conflicts (a little tricky, I did some cleanup of interacting changes):
pkgs/development/compilers/llvm/default.nix
pkgs/development/libraries/libpng/default.nix
pkgs/tools/package-management/nixops/default.nix
pkgs/top-level/all-packages.nix
Note that there is some duplication when building clang now. The llvm source
is unpacked twice, ./configure is run twice, and two small unit test
libraries are compiled twice. IMO this is a fair tradeoff for having
llvm be a separate build unaffected by changes to clang
svn path=/nixpkgs/trunk/; revision=29919
