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kit
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extract.sh (2614B)

      1 #!/usr/bin/env bash
      2 # test/libc/musl/extract.sh — build a musl sysroot container image and
      3 # unpack /sysroot from it into build/musl-sysroot[-ARCH]/ on the host.
      4 # Cached after the first successful run; pass `-f` to force a rebuild.
      5 #
      6 # Usage:
      7 #   extract.sh              # default aarch64 -> build/musl-sysroot/
      8 #   extract.sh -a aarch64   # same as default
      9 #   extract.sh -a x64       # x86_64       -> build/musl-sysroot-x64/
     10 #   extract.sh -a rv64      # riscv64      -> build/musl-sysroot-rv64/
     11 #
     12 # Arch-specific Containerfiles live next to this script
     13 # (Containerfile, Containerfile.x64, Containerfile.rv64).
     14 #
     15 # The aarch64 sysroot keeps the historical bare `build/musl-sysroot/`
     16 # path so test-libc-musl (the kit-ld dynamic/static aarch64 harness) is
     17 # unaffected. test-libc on Linux uses the arch-suffixed paths uniformly
     18 # and re-targets `build/musl-sysroot/` for aarch64.
     19 #
     20 # Output layout (per arch):
     21 #   build/musl-sysroot[-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 ARCH=aarch64
     29 FORCE=0
     30 
     31 while [ $# -gt 0 ]; do
     32     case "$1" in
     33         -a) ARCH="$2"; shift 2 ;;
     34         --arch=*) ARCH="${1#--arch=}"; shift ;;
     35         -f|--force) FORCE=1; shift ;;
     36         *) echo "unknown arg: $1" >&2; exit 2 ;;
     37     esac
     38 done
     39 
     40 case "$ARCH" in
     41     aarch64)
     42         SYSROOT="$ROOT/build/musl-sysroot"
     43         PLATFORM="linux/arm64"
     44         CFILE="Containerfile"
     45         TAG="kit-musl-sysroot"
     46         ;;
     47     x64)
     48         SYSROOT="$ROOT/build/musl-sysroot-x64"
     49         PLATFORM="linux/amd64"
     50         CFILE="Containerfile.x64"
     51         TAG="kit-musl-sysroot-x64"
     52         ;;
     53     rv64)
     54         SYSROOT="$ROOT/build/musl-sysroot-rv64"
     55         PLATFORM="linux/riscv64"
     56         CFILE="Containerfile.rv64"
     57         TAG="kit-musl-sysroot-rv64"
     58         ;;
     59     *)
     60         echo "extract.sh: unknown arch '$ARCH' (want aarch64|x64|rv64)" >&2
     61         exit 2
     62         ;;
     63 esac
     64 
     65 if [ -f "$SYSROOT/PROVENANCE" ] && [ $FORCE -eq 0 ]; then
     66     echo "musl sysroot already present at $SYSROOT (use -f to rebuild)"
     67     exit 0
     68 fi
     69 
     70 if ! command -v podman >/dev/null 2>&1; then
     71     echo "extract.sh: podman is required" >&2
     72     exit 1
     73 fi
     74 
     75 cd "$ROOT/test/libc/musl"
     76 echo "Building $TAG (Alpine $ARCH + musl-dev)..."
     77 podman build --platform "$PLATFORM" -f "$CFILE" -t "$TAG" . >/dev/null
     78 
     79 rm -rf "$SYSROOT"
     80 mkdir -p "$SYSROOT"
     81 
     82 echo "Extracting sysroot to $SYSROOT..."
     83 podman run --rm --platform "$PLATFORM" "$TAG" | tar -C "$SYSROOT" -xf -
     84 
     85 echo "Done. Provenance:"
     86 cat "$SYSROOT/PROVENANCE"