shells/filc-llvm.nix

Shell for hacking on the Fil-C LLVM/Clang (FilPizlonator, clang CodeGen) outside Nix with incremental ninja builds. See docs/llvm-dev.md.

λpkgs, sources?

pkgs
sources	default import../lib/sources.nix inherit pkgs;

let

9lib=

import../lib inherit pkgs;

used by cmakeArgs

10filc0=

import../compiler/filc0.nix inherit pkgs sources;

used by cmakeArgs

11filcc-dev=

import../toolchain.nix

12inherit

pkgs sources

13devLlvm=

true

16cmakeArgs=

pkgs.lib.escapeShellArgs

lib.cmakeFlags

filc0.cmakeOptions

Faster relinks than gold for the edit/build loop.

21LLVM_USE_LINKER=

"lld"

22LLVM_USE_SPLIT_DWARF=

true

23CMAKE_C_COMPILER_LAUNCHER=

"ccache"

24CMAKE_CXX_COMPILER_LAUNCHER=

"ccache"

uses filc0 lib used by configure

29configure=

pkgs.writeShellScriptBin"filc-llvm-configure"

set -eu

exec cmake -S "$FILC_SRC/llvm" -B "$FILC_DEV_LLVM" -G Ninja ${cmakeArgs} "$@"

uses cmakeArgs

34build=

pkgs.writeShellScriptBin"filc-llvm-build"

set -eu

[ -f "$FILC_DEV_LLVM/build.ninja" ] || filc-llvm-configure

if [ $# -eq 0 ]; then set -- clang; fi

exec ninja -C "$FILC_DEV_LLVM" "$@"

41worktree=

pkgs.writeShellScriptBin"filc-llvm-worktree"

# usage: filc-llvm-worktree <existing fil-c clone> <new worktree dir> <branch>

# Creates a sparse worktree at the revision filnix pins (${sources.coreRev}).

set -eu

git -C "$1" fetch ${pkgs.lib.escapeShellArgsources.filc0-src.url} ${sources.coreRev}

git -C "$1" worktree add --no-checkout -b "$3" "$2" ${sources.coreRev}

git -C "$2" sparse-checkout set --no-cone \

/LLVM-LICENSE.txt /llvm/ /clang/ /cmake/ /third-party/ \

/libcxx/ /libcxxabi/ /libc/ /runtimes/ /filc/ /libpas/

git -C "$2" checkout "$3"

pkgs.mkShell

54name=

"filc-llvm"

55packages=

pkgs.cmake pkgs.ninja pkgs.python3 pkgs.ccache pkgs.lld pkgs.git configure build worktree filcc-dev

68shellHook=

export FILC_SRC="''${FILC_SRC:-$HOME/fil-c-dev}"

export FILC_DEV_LLVM="''${FILC_DEV_LLVM:-$FILC_SRC/build-filnix}"

echo "Fil-C LLVM dev shell"

echo " FILC_SRC=$FILC_SRC"

echo " FILC_DEV_LLVM=$FILC_DEV_LLVM"

echo " filc-llvm-build [targets] (default: clang)"

echo " clang / clang++ run the dev clang with the pinned Fil-C runtime"