#!/bin/sh
# Builds M2make with the V3 M2 compiler itself.
# Usage: ./build_m2.sh   (from the tools/m2make directory)
# Output: b_v3/M2make (a V3-built binary)
#
# Session: SysShim + FileIO (runtime/syslib) + M2makeOS + M2make,
# then qbe + cc with the runtime shim and m2make_os.c.
set -e
cd "$(dirname "$0")"
M2=../../compiler/M2
SYS=../../runtime/syslib
rm -rf b_v3
mkdir -p b_v3
cp M2make.mod M2makeOS.def m2make_os.c b_v3/
cp M2makeOS_v3.mod b_v3/M2makeOS.mod
cd b_v3
mkdir -p gen_ssa
echo "=== Compiling (M2 session) ==="
# NB: M2 exits 0 even when it reports "Incorrect source", so gate on
# the verdict text instead of the exit code.
"../$M2" \
    "../$SYS/SysShim.def" "../$SYS/SysShim.mod" \
    "../$SYS/FileIO.def" "../$SYS/FileIO.mod" \
    M2makeOS.def M2makeOS.mod M2make.mod \
    2>&1 | tee m2.log | grep -q Parsed || exit 1
echo "=== Assembling and linking ==="
qbe -o gen_ssa/M2make.s gen_ssa/M2make.ssa || exit 1
cc gen_ssa/M2make.s "../$SYS/shim.c" m2make_os.c \
    -o M2make -lm || exit 1
echo "=== b_v3/M2make built ==="