kit

kit
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extract.sh (2737B)

      1 #!/usr/bin/env bash
      2 # test/libc/musl/extract.sh — build a musl sysroot container image and
      3 # unpack /sysroot from it into $XDG_CACHE_HOME/kit/sysroots/linux-musl[-ARCH]/.
      4 # Cached after the first successful run; pass `-f` to force a rebuild.
      5 #
      6 # Usage:
      7 #   extract.sh              # default aarch64 -> $XDG_CACHE_HOME/kit/sysroots/linux-musl/
      8 #   extract.sh -a aarch64   # same as default
      9 #   extract.sh -a x64       # x86_64       -> $XDG_CACHE_HOME/kit/sysroots/linux-musl-x64/
     10 #   extract.sh -a rv64      # riscv64      -> $XDG_CACHE_HOME/kit/sysroots/linux-musl-rv64/
     11 #
     12 # Arch-specific Containerfiles live next to this script
     13 # (Containerfile, Containerfile.x64, Containerfile.rv64).
     14 #
     15 # The aarch64 sysroot uses the bare `musl-sysroot` name (no arch suffix)
     16 # for consistency with existing test-libc-musl usage. test-libc on Linux
     17 # uses the arch-suffixed paths uniformly and re-targets `musl-sysroot` for
     18 # aarch64.
     19 #
     20 # Output layout (per arch):
     21 #   $XDG_CACHE_HOME/kit/sysroots/linux-musl[-ARCH]/
     22 #     lib/      crt1.o crti.o crtn.o libc.a libssp_nonshared.a ld-musl-*
     23 #     include/  musl + linux-headers tree
     24 #     PROVENANCE
     25 set -eu
     26 
     27 ROOT="$(cd "$(dirname "$0")/../../.." && pwd)"
     28 _KIT_SYSROOTS="${XDG_CACHE_HOME:-$HOME/.cache}/kit/sysroots"
     29 ARCH=aarch64
     30 FORCE=0
     31 
     32 while [ $# -gt 0 ]; do
     33     case "$1" in
     34         -a) ARCH="$2"; shift 2 ;;
     35         --arch=*) ARCH="${1#--arch=}"; shift ;;
     36         -f|--force) FORCE=1; shift ;;
     37         *) echo "unknown arg: $1" >&2; exit 2 ;;
     38     esac
     39 done
     40 
     41 case "$ARCH" in
     42     aarch64)
     43         SYSROOT="$_KIT_SYSROOTS/linux-musl"
     44         PLATFORM="linux/arm64"
     45         CFILE="Containerfile"
     46         TAG="kit-musl-sysroot"
     47         ;;
     48     x64)
     49         SYSROOT="$_KIT_SYSROOTS/linux-musl-x64"
     50         PLATFORM="linux/amd64"
     51         CFILE="Containerfile.x64"
     52         TAG="kit-musl-sysroot-x64"
     53         ;;
     54     rv64)
     55         SYSROOT="$_KIT_SYSROOTS/linux-musl-rv64"
     56         PLATFORM="linux/riscv64"
     57         CFILE="Containerfile.rv64"
     58         TAG="kit-musl-sysroot-rv64"
     59         ;;
     60     *)
     61         echo "extract.sh: unknown arch '$ARCH' (want aarch64|x64|rv64)" >&2
     62         exit 2
     63         ;;
     64 esac
     65 
     66 if [ -f "$SYSROOT/PROVENANCE" ] && [ $FORCE -eq 0 ]; then
     67     echo "musl sysroot already present at $SYSROOT (use -f to rebuild)"
     68     exit 0
     69 fi
     70 
     71 if ! command -v podman >/dev/null 2>&1; then
     72     echo "extract.sh: podman is required" >&2
     73     exit 1
     74 fi
     75 
     76 cd "$ROOT/test/libc/musl"
     77 echo "Building $TAG (Alpine $ARCH + musl-dev)..."
     78 podman build --platform "$PLATFORM" -f "$CFILE" -t "$TAG" . >/dev/null
     79 
     80 rm -rf "$SYSROOT"
     81 mkdir -p "$SYSROOT"
     82 
     83 echo "Extracting sysroot to $SYSROOT..."
     84 podman run --rm --platform "$PLATFORM" "$TAG" | tar -C "$SYSROOT" -xf -
     85 
     86 echo "Done. Provenance:"
     87 cat "$SYSROOT/PROVENANCE"