When building with -DCOMPILER_RT_DEFAULT_TARGET_ONLY=ON the compiler-rt
CMake configuration attempts to use CMAKE_*_COMPILER_TARGET variables,
which are usually only defined in cross-compilation mode.
You can build (partially) with LLVM toolchain using the useLLVM flag.
This works like so:
nix-build -A hello --arg crossSystem '{ system =
"aarch64-unknown-linux-musl"; useLLVM = true }'
also don’t separate debug info in lldClang
It doesn’t work currently with that setup hook. Missing build-id?
LLVM should be target independent because it will work with all
machine types. This is different from GCC where it needs to know what
target to build ahead of time.
Whenever we create scripts that are installed to $out, we must use runtimeShell
in order to get the shell that can be executed on the machine we create the
package for. This is relevant for cross-compiling. The only use case for
stdenv.shell are scripts that are executed as part of the build system.
Usages in checkPhase are borderline however to decrease the likelyhood
of people copying the wrong examples, I decided to use runtimeShell as well.
* llvm: build w/polly in-tree, optionally
Don't enable by default yet, defer rebuilds.
* top-level: llvm-polly, clang-polly
* bit hacky re:overrides
* need to explicitly set cmake flags for clang to link in polly
Due to upcoming packaging changes with ATS2, the -gmp release will be the
same as the old release, and it is the most full-featured release. So
nothing is changing other than the .tgz archive name.
This package was written more than a decade ago; this commit updates the layout
to be more conventional without making any meaningful changes. Note that because
it now has a version attribute in the derivation this does change the hash.
Use the system `libffi` (`ie` nixpkgs's) instead of built-in libffi
from ghc source tree.
This will prevent library conflict when ghc dynamically links haskell
packages (linked with ghc built-in libffi) and any external library
which uses nixpkgs `libffi`.
Closes https://github.com/NixOS/nixpkgs/pull/55208.
