1 files changed, 54 insertions, 0 deletions
diff --git a/src/tools/zcc b/src/tools/zcc
new file mode 100755
index 0000000..19904ea
--- /dev/null
+++ b/src/tools/zcc
@@ -0,0 +1,54 @@
+#!/bin/bash
+# zcc: compiles a ZC (ZygoteC) program into a static binary. the binary holds
+# the runtime, the program and a memory map sized to them, and needs nothing
+# from the system but the kernel (linux x86-64 and any host with a static
+# libc). the program reads and writes through the same syscalls as zy(1).
+#
+#   src/tools/zcc [-o OUT] [-k] FILE.zc
+#
+# -o OUT    the binary to write (default: FILE without .zc)
+# -k        keep the build directory and print where it is
+# CC        the C compiler (default cc). CFLAGS adds to the default -O2
+#
+# the build is three steps: automap sizes the map to the program and writes the
+# genome (the compiled program image) for it; the micro core and its linux port
+# are compiled against that map; and the link is static. make run PROG= builds
+# the same image without the static link.
+set -e
+here="$(cd "$(dirname "$0")/../.." && pwd)"
+CC=${CC:-cc}
+out=""; keep=0
+while [ $# -gt 0 ]; do
+	case "$1" in
+		-o) [ $# -ge 2 ] || { echo "zcc: -o needs a name" >&2; exit 2; }; out="$2"; shift 2 ;;
+		-k) keep=1; shift ;;
+		-h|--help) sed -n '2,15p' "$0"; exit 0 ;;
+		-*) echo "zcc: unknown option $1" >&2; exit 2 ;;
+		*) break ;;
+	esac
+done
+[ $# -eq 1 ] || { echo "usage: src/tools/zcc [-o OUT] [-k] FILE.zc" >&2; exit 2; }
+src="$1"
+[ -f "$src" ] || { echo "zcc: no such file: $src" >&2; exit 1; }
+case "$src" in *.zc) ;; *) echo "zcc: the source must end in .zc" >&2; exit 2 ;; esac
+[ -n "$out" ] || { out="${src%.zc}"; out="$(basename "$out")"; }
+case "$src" in /*) abs="$src" ;; *) abs="$PWD/$src" ;; esac
+
+work="$(mktemp -d "${TMPDIR:-/tmp}/zcc.XXXXXX")"
+cleanup() { [ "$keep" = 1 ] && echo "zcc: build kept in $work" >&2 || rm -rf "$work"; }
+trap cleanup EXIT
+
+# the map and the genome for this program only
+( cd "$here" && bash src/tools/automap.sh run "$work/run" src/runtime/run.zc "$abs" ) >/dev/null
+cp "$here/src/micro/micro.c" "$here/src/micro/micro_port.h" "$here/src/micro/port_linux.c" \
+	"$here/src/core/fops.h" "$here/src/core/bops.h" "$here/src/core/stack.h" "$work/run/"
+
+# static where the toolchain allows it; a plain link otherwise, with a note
+static=-static
+if ! printf 'int main(void){return 0;}\n' | $CC -x c -static -o "$work/probe" - >/dev/null 2>&1; then
+	static=""
+	echo "zcc: this toolchain cannot link -static; the binary is dynamic" >&2
+fi
+$CC -O2 -w -fwrapv ${CFLAGS:-} $static "$work/run/micro.c" "$work/run/port_linux.c" \
+	-I"$work/run" -o "$out"
+echo "zcc: wrote $out ($(wc -c < "$out" | tr -d ' ') bytes)"