74 lines
2.5 KiB
Bash
74 lines
2.5 KiB
Bash
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#!/usr/bin/env bash
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#
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# Cross-compile the FreeBSD emulation-check fixtures (compiler/src/it/freebsd/*.pas)
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# with --target freebsd-x86_64 on a Linux host. The resulting static, freestanding
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# FreeBSD ET_EXEC binaries are then run inside a FreeBSD VM (see the freebsd-crosscheck
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# job in .github/workflows/bootstrap.yml) to validate the FreeBSD syscall leaf and
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# struct-stat layout that host-side static ELF checks cannot catch.
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#
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# Usage:
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# BLAISE=/path/to/blaise scripts/freebsd-crosscheck-build.sh [OUTDIR]
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#
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# BLAISE path to a native-backend blaise binary that supports --target
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# freebsd-x86_64 (defaults to compiler/target/blaise).
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# OUTDIR where to write the cross-compiled binaries (defaults to
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# target/freebsd-crosscheck).
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#
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# The binaries CANNOT run on the Linux host (FreeBSD syscall numbers/ABI); this
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# script only builds and sanity-checks the emitted ELF shape. Prints
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# FREEBSD_CROSSBUILD_OK on success.
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set -euo pipefail
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ROOT="$(cd "$(dirname "$0")/.." && pwd)"
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cd "$ROOT"
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BLAISE="${BLAISE:-compiler/target/blaise}"
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OUTDIR="${1:-target/freebsd-crosscheck}"
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FIXDIR="compiler/src/it/freebsd"
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if [ ! -x "$BLAISE" ]; then
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echo "error: blaise binary not found or not executable: $BLAISE" >&2
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exit 1
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fi
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mkdir -p "$OUTDIR"
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# The compiler resolves blaise_rtl.a / the RTL source relative to its own binary;
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# the RTL source lives in the compiler tree. Both unit paths mirror the normal
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# native build.
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UNIT_ARGS=(
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--unit-path runtime/src/main/pascal
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--unit-path stdlib/src/main/pascal
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)
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for src in "$FIXDIR"/*.pas; do
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name="$(basename "$src" .pas)"
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out="$OUTDIR/$name"
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echo "cross-compiling $src -> $out (freebsd-x86_64)"
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"$BLAISE" \
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--source "$src" \
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--backend native \
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--target freebsd-x86_64 \
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--output "$out" \
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"${UNIT_ARGS[@]}"
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# Sanity-check the emitted ELF is a FreeBSD (EI_OSABI=9) ET_EXEC. readelf is
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# part of binutils, always present on the Linux runner.
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osabi="$(readelf -hW "$out" | awk -F: '/OS\/ABI/ {print $2}' | xargs)"
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etype="$(readelf -hW "$out" | awk -F: '/Type:/ {print $2}' | awk '{print $1}')"
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case "$osabi" in
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*FreeBSD*) : ;;
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*) echo "error: $out is not a FreeBSD binary (OS/ABI=$osabi)" >&2; exit 1 ;;
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esac
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if [ "$etype" != "EXEC" ]; then
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echo "error: $out is not a static ET_EXEC (Type=$etype)" >&2
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exit 1
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fi
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done
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# Drop the .o intermediates the compiler leaves beside each output, so the VM
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# job can run every executable in OUTDIR without tripping over object files.
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rm -f "$OUTDIR"/*.o
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echo "FREEBSD_CROSSBUILD_OK"
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