# Makefile — Brave Fencer Musashi decompilation (SLUS-00726, USA)
# =============================================================================
# Phase 4 deliverable. The ONLY live target is `check-env` (the Phase-4
# milestone: toolchain preflight). The split/build/check/expected/clean targets
# have their NAMES fixed here per docs/SETUP.md §6.3, but are loud-failing stubs
# until Phase 5 implements them. Run builds natively from the ext4 clone (H2/R2).
# =============================================================================

SHELL := /bin/bash
.ONESHELL:
.DEFAULT_GOAL := help

# --- paths & tooling ---------------------------------------------------------
PYTHON      := python3
VENV        := .venv
VENV_PY     := $(VENV)/bin/python
MIPS_PREFIX := mipsel-linux-gnu-
AS          := $(MIPS_PREFIX)as
LD          := $(MIPS_PREFIX)ld
OBJCOPY     := $(MIPS_PREFIX)objcopy
CC1_PSX     := tools/bin/gcc-2.7.2-psx/cc1
CC1_CDK     := tools/bin/gcc-2.7.2-cdk/cc1
MASPSX      := tools/maspsx/maspsx.py
# =============================================================================
# Binaries — data-driven (Phase 9). Each binary is an alias key in BINARIES with a
# namespaced <alias>_* variable set. `main` is the retail EXE SLUS_007.26 (the FIRST
# instance); its artifact paths are PRESERVED VERBATIM (build/us/, *.us.* config) so
# its rebuild stays a byte-exact no-op. The clean <bin> path convention (config/
# splat.<bin>.yaml, build/<bin>/, config/check.<bin>.sha, config/symbols.<bin>.txt,
# .run/sig.<bin>.jsonl) is documented now but first INSTANTIATED by Phase 10's second
# binary. Select with `make build BINARY=<alias>`; defaults to the EXE.
# -----------------------------------------------------------------------------
BINARIES := main resident
BINARY   ?= main
$(if $(filter $(BINARY),$(BINARIES)),,$(error BINARY='$(BINARY)' not in BINARIES='$(BINARIES)'))

# --- main (retail EXE SLUS_007.26) — values preserved from Phases 4-8 ---------
main_EXE        := extracted/retail/SLUS_007.26
main_NAME       := SLUS_007.26
main_OUT_DIR    := build/us
main_OUT        := $(main_OUT_DIR)/$(main_NAME)
main_ELF        := $(main_OUT).elf
main_MAPFILE    := $(main_OUT).map
main_LD_SCRIPT  := $(main_OUT).ld
main_SPLAT_YAML := config/splat.us.exe.yaml
main_CHECK_SHA  := config/check.us.sha
main_SYMBOLS    := config/symbols.us.txt
main_SIG        := .run/sig.SLUS_007.26.jsonl
main_GHIDRA_PROG := SLUS_007.26
# The fileoff->vram relation: text loads at file 0x800 / vram 0x80010000, so
# base = 0x80010000 - 0x800 = 0x8000F800. NOT a universal PS1 constant — overlays
# differ. Threaded into the tools as a REQUIRED param starting T5; defined here now.
main_VRAM_BASE  := 0x8000F800
main_TEXT_LO    := 0x80010000
main_TEXT_HI    := 0x800629DC
# Source roots + undefined-sym outputs: main lives at the repo root (verbatim).
main_ASM_DIR     := asm
main_SRC_DIR     := src
main_UNDEF_SYMS  := undefined_syms_auto.txt
main_UNDEF_FUNCS := undefined_funcs_auto.txt

# --- resident (engine blob MAIN.CD/FILE_010/1.1, vram 0x800CEDF8 — Phase 10) ----
# The always-resident engine blob: extracted type-1 (uncompressed) payload, load
# address RAM-proven in Phase 3 (T6b). Flat image (no PS-X EXE header); fileoff 0 ->
# vram 0x800CEDF8 so VRAM_BASE = 0x800CEDF8 (NOT main's 0x8000F800). 365,404 B (0x5935C)
# -> end vram 0x80128154. Its splat output NESTS under asm/resident + src/resident +
# build/resident, kept disjoint from main's asm/ + src/ by the per-binary OBJS glob below.
resident_EXE        := extracted/retail/MAIN.CD.dir/FILE_010.dir/1.1
resident_NAME       := resident
resident_OUT_DIR    := build/resident
resident_OUT        := $(resident_OUT_DIR)/$(resident_NAME)
resident_ELF        := $(resident_OUT).elf
resident_MAPFILE    := $(resident_OUT).map
resident_LD_SCRIPT  := $(resident_OUT).ld
resident_SPLAT_YAML := config/splat.resident.yaml
resident_CHECK_SHA  := config/check.resident.sha
resident_SYMBOLS    := config/symbols.resident.txt
resident_SIG        := .run/sig.resident.jsonl
resident_GHIDRA_PROG := resident
resident_VRAM_BASE  := 0x800CEDF8
resident_TEXT_LO    := 0x800CEDF8
resident_TEXT_HI    := 0x80128154
resident_ASM_DIR     := asm/resident
resident_SRC_DIR     := src/resident
resident_UNDEF_SYMS  := build/resident/undefined_syms_auto.txt
resident_UNDEF_FUNCS := build/resident/undefined_funcs_auto.txt

# --- selected-binary aliases (resolve $(BINARY) -> the active instance) -------
EXE        := $($(BINARY)_EXE)
NAME       := $($(BINARY)_NAME)
OUT_DIR    := $($(BINARY)_OUT_DIR)
OUT        := $($(BINARY)_OUT)
ELF        := $($(BINARY)_ELF)
MAPFILE    := $($(BINARY)_MAPFILE)
LD_SCRIPT  := $($(BINARY)_LD_SCRIPT)
SPLAT_YAML := $($(BINARY)_SPLAT_YAML)
CHECK_SHA  := $($(BINARY)_CHECK_SHA)
SYMBOLS    := $($(BINARY)_SYMBOLS)
VRAM_BASE  := $($(BINARY)_VRAM_BASE)
TEXT_LO    := $($(BINARY)_TEXT_LO)
TEXT_HI    := $($(BINARY)_TEXT_HI)
ASM_DIR     := $($(BINARY)_ASM_DIR)
SRC_DIR     := $($(BINARY)_SRC_DIR)
UNDEF_SYMS  := $($(BINARY)_UNDEF_SYMS)
UNDEF_FUNCS := $($(BINARY)_UNDEF_FUNCS)
GHIDRA_PROG := $($(BINARY)_GHIDRA_PROG)

# cc1 smoke flags — the §5.4 first-candidate set; the real triple is pinned only
# after Phase-6 fingerprinting. Used here purely to prove cc1 executes.
CC1_SMOKE_FLAGS := -quiet -O2 -G0 -mips1 -mcpu=3000 -mgas -msoft-float -fgnu-linker

# binutils regression line (docs/SETUP.md §4.5): >= 2.38 is a WARN (PS1-matching
# regression suspect; 2.35 known-good). The verdict is revisited in Phase 5.
BINUTILS_WARN_MAJOR := 2
BINUTILS_WARN_MINOR := 38

.PHONY: help check-env extract build check expected clean report sig-refresh sig-overlays

# -----------------------------------------------------------------------------
help:
	@echo "BFM-decomp — make targets:"
	echo "  make check-env   Phase-4 toolchain preflight (the only live target)"
	echo "  make extract     [Phase 5] splat split -> asm/ + linker scripts"
	echo "  make build       [Phase 5] full pipeline -> build/us/SLUS_007.26 (+ SHA1 check)"
	echo "  make check       [Phase 5] standalone SHA1 verification"
	echo "  make expected    [Phase 5] snapshot build/us -> expected/ (asm-differ baseline)"
	echo "  make clean       [Phase 5] remove build output"
	echo "  make report      [Phase 7] regenerate docs/ progress+difficulty+duplicate digests"
	echo "  make sig-refresh [Phase 7] regenerate .run/sig.*.jsonl from Ghidra (MCP must be stopped)"

# -----------------------------------------------------------------------------
# Phase 7 reports: deterministic, committable docs/ digests. progress/difficulty/dup_report
# are Ghidra-free; sig-refresh regenerates dup_report's input from the saved Ghidra DB.
GHIDRA       := $(or $(GHIDRA_INSTALL_DIR),$(HOME)/ghidra_12.1_PUBLIC)
GHIDRA_PROJ  := $(HOME)/bfm-decomp/ghidra

report:
	$(VENV_PY) tools/progress.py --binary $(BINARY) --audit
	$(VENV_PY) tools/difficulty.py --binary $(BINARY)
	$(VENV_PY) tools/dup_report.py --binary $(BINARY)
# Cross-binary dedup report (Phase 11): binary-spanning, run ONCE (not per-binary), so it
# only fires for the default binary — avoids `make report BINARY=resident` rewriting the
# identical file. --cross ignores --binary and scans every sig in BINARIES.
ifeq ($(BINARY),main)
	$(VENV_PY) tools/dup_report.py --cross
	# Byte-honesty gate (Phase 11): fail-closed if any registered code-share drifted from its
	# recorded signature hash. Last in the recipe, so a stale share fails `make report` (P9).
	$(VENV_PY) tools/dedup_integrate.py --check
endif

sig-refresh:
	@if ss -tln 2>/dev/null | grep -qE ':8080([^0-9]|$$)'; then
		echo "sig-refresh: ERROR — Ghidra MCP serving on :8080; run tools/ghidra_mcp_stop.sh first."; exit 2
	fi
	"$(GHIDRA)/support/analyzeHeadless" "$(GHIDRA_PROJ)" bfm -process $(GHIDRA_PROG) -noanalysis -readOnly \
	  -scriptPath tools/ghidra_scripts -postScript DumpFunctionSignatures.java

# sig-overlays (Phase 11): Ghidra-FREE — sign every location-overlay payload (the 134 SCxx 0.4.dec)
# at the shared overlay vram with tools/sig_image.py, so `make report` (--cross) can find cross-overlay
# duplicates. Each -> .run/sig.ov_<SCxx>_<nnn>.jsonl (gitignored; regenerable). Re-run when overlays
# change; not part of `make report` (it scans whatever ov_* sigs exist, like sig-refresh).
OVERLAY_VRAM := 0x80128158
sig-overlays:
	@n=0
	for f in $$(find extracted/retail -path '*SC*.CD.dir/FILE_*.dir/0.4.dec' | sort); do
		nm=$$(echo "$$f" | sed -E 's|.*/(SC[0-9]+)\.CD\.dir/FILE_([0-9]+)\.dir.*|ov_\1_\2|')
		$(VENV_PY) tools/sig_image.py --image "$$f" --vram-base $(OVERLAY_VRAM) --bootstrap --name "$$nm" >/dev/null
		n=$$((n+1))
	done
	echo "sig-overlays: signed $$n overlays -> .run/sig.ov_*.jsonl"

# -----------------------------------------------------------------------------
# check-env: assert every Phase-4 toolchain component. Runs ALL checks (does not
# stop at the first failure) so the report is complete, then exits nonzero if any
# hard check failed. binutils >= 2.38 is a WARN, never a FAIL (§4.5).
check-env:
	@fail=0
	echo "== BFM-decomp environment preflight (Phase 4 check-env) =="
	echo
	# 1) Python >= 3.12 (system python3 drives tooling + the EXE-hash import)
	pyver=$$($(PYTHON) -c 'import sys; print("%d.%d" % sys.version_info[:2])' 2>/dev/null)
	if $(PYTHON) -c 'import sys; raise SystemExit(0 if sys.version_info[:2] >= (3,12) else 1)' 2>/dev/null; then
		echo "[PASS] python3 $$pyver (>= 3.12)"
	else
		echo "[FAIL] python3 $${pyver:-not-found} (need >= 3.12)"; fail=1
	fi
	# 2) venv present + splat importable
	if [ -x "$(VENV_PY)" ]; then
		if $(VENV_PY) -c 'import splat' 2>/dev/null; then
			sv=$$($(VENV_PY) -c 'import importlib.metadata as m; print(m.version("splat64"))' 2>/dev/null)
			echo "[PASS] venv 'import splat' OK (splat64 $${sv:-?})"
		else
			echo "[FAIL] venv present but 'import splat' failed (run: $(VENV_PY) -m pip install 'splat64[mips]>=0.41.0,<1.0.0')"; fail=1
		fi
	else
		echo "[FAIL] $(VENV_PY) missing (run: $(PYTHON) -m venv $(VENV) && $(VENV)/bin/pip install 'splat64[mips]>=0.41.0,<1.0.0')"; fail=1
	fi
	# 3) cc1 candidates executable — R12-clean smoke (stdin -> /dev/null, no temp file)
	for cc1 in "$(CC1_PSX)" "$(CC1_CDK)"; do
		if [ -x "$$cc1" ] && echo 'int _ce(){return 0;}' | "$$cc1" $(CC1_SMOKE_FLAGS) -o /dev/null 2>/dev/null; then
			echo "[PASS] cc1 runs: $$cc1"
		else
			echo "[FAIL] cc1 not runnable: $$cc1 (see docs/SETUP.md §4.7)"; fail=1
		fi
	done
	# 4) maspsx submodule populated
	if [ -f "$(MASPSX)" ]; then
		echo "[PASS] maspsx present: $(MASPSX)"
	else
		echo "[FAIL] $(MASPSX) missing (run: git submodule update --init)"; fail=1
	fi
	# 5) mipsel binutils on PATH (as / ld / objcopy)
	for t in $(AS) $(LD) $(OBJCOPY); do
		if command -v $$t >/dev/null 2>&1; then
			echo "[PASS] $$t: $$($$t --version | head -1)"
		else
			echo "[FAIL] $$t not on PATH (apt install binutils-mipsel-linux-gnu)"; fail=1
		fi
	done
	# 5b) binutils regression line: >= 2.38 -> WARN (not FAIL); §4.5
	asver=$$($(AS) --version 2>/dev/null | head -1 | grep -oE '[0-9]+\.[0-9]+' | head -1)
	if [ -n "$$asver" ]; then
		amaj=$${asver%%.*}; amin=$${asver##*.}
		if [ "$$amaj" -gt $(BINUTILS_WARN_MAJOR) ] || { [ "$$amaj" -eq $(BINUTILS_WARN_MAJOR) ] && [ "$$amin" -ge $(BINUTILS_WARN_MINOR) ]; }; then
			echo "[WARN] mipsel binutils $$asver >= 2.38 — PS1-matching regression suspect (2.35 known-good); revisit in Phase 5 (docs/SETUP.md §4.5)"
		else
			echo "[PASS] mipsel binutils $$asver (< 2.38)"
		fi
	fi
	# 6) committed EXE hash == EXPECTED_EXE_SHA1 (reused constant; fresh-clone-safe)
	if [ -f "$(EXE)" ]; then
		want=$$($(PYTHON) -c 'from tools.bfm_extract.extract_exe import EXPECTED_EXE_SHA1 as h; print(h)' 2>/dev/null)
		got=$$(sha1sum "$(EXE)" | cut -d' ' -f1)
		if [ -n "$$want" ] && [ "$$got" = "$$want" ]; then
			echo "[PASS] $(EXE) sha1 $$got == EXPECTED_EXE_SHA1"
		else
			echo "[FAIL] $(EXE) sha1 $${got:-none} != expected $${want:-unknown}"; fail=1
		fi
	else
		echo "[FAIL] $(EXE) missing (committed retail EXE)"; fail=1
	fi
	echo
	if [ "$$fail" -ne 0 ]; then
		echo "check-env: FAIL — see the [FAIL] lines above."
		exit 1
	fi
	echo "check-env: OK — Phase-4 toolchain ready."

# -----------------------------------------------------------------------------
# Phase-5 build: splat split -> assemble -> link -> objcopy -> SHA1 check.
# The code is 100% assembly (the "all-asm byte-match" milestone). The cpp->cc1->
# maspsx->as path is documented below but dormant until Phase 6 adds `c` segments.
SPLAT       := $(VENV_PY) -m splat
CPP         := $(MIPS_PREFIX)cpp
# (SPLAT_YAML / OUT_DIR / OUT / ELF / MAPFILE / LD_SCRIPT / CHECK_SHA are per-binary
#  aliases in the "Binaries" data block near the top of this file — Phase 9. UNDEF_SYMS /
#  UNDEF_FUNCS / ASM_DIR / SRC_DIR joined them per-binary in Phase 10: a second binary
#  writes its undefined_*_auto under build/<bin>/ and nests its sources under <bin>/.)

# Phase 7 (Task 2'): link the real PsyQ libcd SDK objects in place of the libcd-region asm stubs.
# tools/psyq_integrate.py rewrites the splat .ld (swap stub objects -> build/psyq/libcd/*.o + NOLOAD
# data placement, no carving) and emits the externals defsym fragment. Conditional on the SDK ELF
# objects being present (gitignored, SDK-derived, via tools/psyq_build_libs.sh LIBCD); a fresh clone
# without them builds byte-identically via the stubs.
LIBCD_ELF    := .run/obj40/libcd
LIBCD_OBJDIR := build/psyq/libcd
LIBCD_SYMS   := build/psyq/libcd_externals.ld

# libgs (Phase 7 Task #9, FULL integration): 31 libgs objects in 6 contiguous blocks linked in place
# of the libgs1..libgs6 block stubs (the 5 non-libgs gaps stay gsgapN asm stubs). Same conditional/
# idempotent model as libcd. The curated object dir is SDK-derived (gitignored), regenerated by
# tools/make_libgs.sh (needs the LIBGS ELF from psyq_build_libs.sh LIBGS). GS_106 (block 4) anchors
# uniquely only within the libgs window, so the integrate call passes 0x80051804 0x80057928.
LIBGS_ELF    := .run/obj40/libgs_used
LIBGS_OBJDIR := build/psyq/libgs
LIBGS_SYMS   := build/psyq/libgs_externals.ld

# libetc (Phase 8): 5 objects (VSYNC/INTR/INTR_VB/INTR_DMA/VMODE) in ONE contiguous block at the tail
# of the old 800 subseg (ends at libcd1). Single stub "libetc"; no placement window needed (all 5
# anchor uniquely over the full text window). Same conditional/idempotent model as libcd/libgs.
LIBETC_ELF    := .run/obj40/libetc
LIBETC_OBJDIR := build/psyq/libetc
LIBETC_SYMS   := build/psyq/libetc_externals.ld

# libgpu (Phase 8): EXT+PRIM only — SYS.o EXCLUDED (scattered-.bss, cookbook §9.1, GS_001 class; stays a
# stub in 800c). Curated dir libgpu_used = {EXT,PRIM}; regenerate: tools/psyq_build_libs.sh LIBGPU then
# `mkdir -p .run/obj40/libgpu_used && cp .run/obj40/libgpu/{EXT,PRIM}.o .run/obj40/libgpu_used/`.
LIBGPU_ELF    := .run/obj40/libgpu_used
LIBGPU_OBJDIR := build/psyq/libgpu
LIBGPU_SYMS   := build/psyq/libgpu_externals.ld

# libmcrd (Phase 8): 2 objects (LIBMCRD.o = the 55 LIBMCRD_OBJ_* + _card_* memcard I/O; USERFUNC.o), 2
# non-adjacent blocks. Clean (.bss commons all recovered). NB: these are the libmcrd SDK objects; the
# GAME's SaveLoadRoutine/Q#5 save logic is a separate Phase-12 item.
LIBMCRD_ELF    := .run/obj40/libmcrd
LIBMCRD_OBJDIR := build/psyq/libmcrd
LIBMCRD_SYMS   := build/psyq/libmcrd_externals.ld

# libc2 (Phase 8): C stdlib, 17 objects, 2 blocks (16-obj main run libc2_1 + STRCAT.o libc2_2). Clean
# (PRNT.o's printf-format jtbl resolves via NOLOAD .rodata).
LIBC2_ELF    := .run/obj40/libc2
LIBC2_OBJDIR := build/psyq/libc2
LIBC2_SYMS   := build/psyq/libc2_externals.ld

# libgte (Phase 8): GTE math, 53 objects in 22 blocks across the 800b region (subseg lines generated by
# tools/gen_lib_subsegs.py). The integrate window 0x4787C..0x51804 restricts placement to 800b so it
# sees 22 blocks (excludes the 5 deferred libgs-gap objects MTX_05/07/11/REG03/REG11; gsgap1/2/4/5 stay
# stubs). Clean (no scattered .bss). stub list = libgte1..libgte22.
LIBGTE_ELF    := .run/obj40/libgte
LIBGTE_OBJDIR := build/psyq/libgte
LIBGTE_SYMS   := build/psyq/libgte_externals.ld
LIBGTE_STUBS  := libgte1,libgte2,libgte3,libgte4,libgte5,libgte6,libgte7,libgte8,libgte9,libgte10,libgte11,libgte12,libgte13,libgte14,libgte15,libgte16,libgte17,libgte18,libgte19,libgte20,libgte21,libgte22

# Combined libspu+libsnd sound region (Phase 8): the two SDK sound libs interleave in 0x3A444..0x4239C
# so they link as one 60-object region (snd1..snd9). Curated dir .run/obj40/snd_used built by
# tools/make_snd_used.py (4 addresses excluded as scattered-.bss/false-positive stubs). Window arg below.
SND_ELF    := .run/obj40/snd_used
SND_OBJDIR := build/psyq/snd
SND_SYMS   := build/psyq/snd_externals.ld
SND_STUBS  := snd1,snd2,snd3,snd4,snd5,snd6,snd7,snd8,snd9

# Combined libapi+libcard 800c2 region (Phase 8): 22 objects in 4 blocks (apicard1..4). Curated dir
# .run/obj40/apicard_used (tools/make_apicard_used.py). Window 0x61F38..0x62888. (libapi's ~22 objects
# in the 800c3 region are DEFERRED — lowest value.)
APICARD_ELF    := .run/obj40/apicard_used
APICARD_OBJDIR := build/psyq/apicard
APICARD_SYMS   := build/psyq/apicard_externals.ld
APICARD_STUBS  := apicard1,apicard2,apicard3,apicard4

# Assembler flags (docs/SETUP.md §6.2). -G0 is confirmed by the disassembly
# (ledger #8: zero $gp-relative addressing). -no-pad-sections keeps section ends
# un-padded so the link reproduces the original layout.
ASFLAGS       := -Iinclude -march=r3000 -mtune=r3000 -no-pad-sections -O1 -G0
# maspsx ASPSX version — ALWAYS explicit (G8). Inert for the all-asm build; the
# real pin is Phase 6. (Only used on the future cpp->cc1->maspsx `c` path.)
ASPSX_VERSION := 2.56
# Extra maspsx flags. --expand-div is PINNED (Phase-6 fingerprint): the original
# emits the full aspsx div sequence (divu + bnez + break 0x7 zero-check); without it
# maspsx leaves a bare divu and div/rem functions never match. Only affects div/rem,
# so the all-INCLUDE_ASM build and div-free functions are unchanged.
MASPSX_FLAGS  := --expand-div

# Object set must match the splat linker script's references. After the Phase-6 asm->c
# flip the text subseg is src/800.c -> build/src/800.o; the per-function
# asm/nonmatchings/<seg>/*.s are TEXTUALLY .include'd by the .c (via INCLUDE_ASM) at
# assembly time, so they are NOT separate objects and must be excluded from the glob.
# header.s and the data subseg stay asm. Globbed at parse time -> run the canonical
# `make extract && make build`.
# Per-binary object scoping (Phase 10): main's sources live at the repo-level asm/ + src/;
# a second binary (resident) nests at asm/<bin>/ + src/<bin>/. The active binary's roots are
# $(ASM_DIR)/$(SRC_DIR). main's roots CONTAIN the nested siblings, so they must be pruned from
# main's glob (else resident's .s/.c contaminate main's OBJS and the link). The prune list is
# DERIVED FROM $(BINARIES) — the $(filter $(ASM_DIR)/%,...) guard prunes only a sibling whose
# root is genuinely nested under the active root, so it self-balances as binaries are added.
OTHER_BINS := $(filter-out $(BINARY),$(BINARIES))
ASM_PRUNE  := $(foreach b,$(OTHER_BINS),$(if $(filter $(ASM_DIR)/%,$($(b)_ASM_DIR)),-not -path '$($(b)_ASM_DIR)/*'))
SRC_PRUNE  := $(foreach b,$(OTHER_BINS),$(if $(filter $(SRC_DIR)/%,$($(b)_SRC_DIR)),-not -path '$($(b)_SRC_DIR)/*'))
ASM_SRCS := $(shell find $(ASM_DIR) -name '*.s' -not -path '$(ASM_DIR)/nonmatchings/*' $(ASM_PRUNE) 2>/dev/null)
C_SRCS   := $(shell find $(SRC_DIR) -name '*.c' $(SRC_PRUNE) 2>/dev/null)
OBJS     := $(ASM_SRCS:%.s=build/%.o) $(C_SRCS:%.c=build/%.o)

# extract: splat split -> asm/, the linker script, include/ macros, undefined_*_auto.txt.
extract:
	@mkdir -p $(OUT_DIR)
	$(SPLAT) split $(SPLAT_YAML)
ifeq ($(BINARY),main)
	# Phase 7 (LZSS): reorder splat's section-major .main into the real
	# .data(front) -> .rodata -> .data(tail) sandwich, so the migrated LZSS
	# jtbl_80072A38 (800.o .rodata) lands at 0x80072A38 between 531DC.data and
	# 6324C.data. Idempotent; keyed off splat's exact output (re-run = no-op).
	# EXE-only (overlays have no rodata island) — gated to BINARY=main; --front/--tail
	# name the sandwich .data objects (cookbook §8).
	$(PYTHON) tools/ld_interleave.py --front 53198.data.o --tail 6324C.data.o $(LD_SCRIPT)
endif

# The linker script is an `extract` output, not produced by `build` — guard with a
# friendly message instead of make's raw "No rule to make target".
$(LD_SCRIPT):
	@echo "make: $(LD_SCRIPT) missing — run 'make extract' first."; exit 1

# Assemble one splat .s (all-asm path).
build/asm/%.o: asm/%.s
	@mkdir -p $(dir $@)
	@echo "  AS      $@"
	@$(AS) $(ASFLAGS) -o $@ $<

# C path (Phase 6): modern cpp -> vintage cc1 -> maspsx -> modern as. Each src/*.c is
# splat-generated INCLUDE_ASM stubs (file-scope __asm__ .include of the per-function
# asm/nonmatchings/<seg>/<fn>.s); as we match, stubs are replaced by real C. The flags
# below are the docs/SETUP.md §5.4 FIRST-CANDIDATE set — provisional until the Phase-6
# fingerprint ladder PINS the triple (then this block + ASPSX_VERSION are updated, G8).
CPPFLAGS := -lang-c -Iinclude -undef -Wall -fno-builtin -Dmips -D__GNUC__=2 -D__OPTIMIZE__ -Dpsx -D_PSYQ -D_MIPSEL -D_LANGUAGE_C
CC1FLAGS := -quiet -O2 -G0 -mips1 -mcpu=3000 -mgas -msoft-float -fgnu-linker
build/src/%.o: src/%.c
	@mkdir -p $(dir $@)
	@echo "  CC      $@"
	@set -o pipefail; $(CPP) $(CPPFLAGS) $< | $(CC1_PSX) $(CC1FLAGS) | $(VENV_PY) $(MASPSX) --aspsx-version=$(ASPSX_VERSION) $(MASPSX_FLAGS) | $(AS) $(ASFLAGS) -o $@

# Per-module optimization override (SETUP §5.5 — per-module compiler mixing). The boot/
# main/game-mode-dispatch module (src/boot.c, vram 0x80010000-0x800123F0) was compiled at
# -O0, NOT the -O2 game-code default: frame-pointer setup + unfolded large-offset loads
# are the evidence (GameModeDispatch byte-matches only at -O0). gcc 2.7.2 has no
# per-function optimize pragma, so opt level is per-file. Target-specific CC1FLAGS (the
# pattern recipe reads $(CC1FLAGS), so this overrides it for just build/src/boot.o):
build/src/boot.o: CC1FLAGS := -quiet -O0 -G0 -mips1 -mcpu=3000 -mgas -msoft-float -fgnu-linker

# link (the .ld pulls in the .o by path) + objcopy to the raw PS-X EXE image.
$(OUT): $(OBJS) $(LD_SCRIPT)
	@set -e
	mkdir -p $(dir $@)
# PsyQ SDK library integrations are EXE-only (libgs/libgte/sound/apicard are
# SLUS_007.26's layout). A second binary (BINARY != main) skips this block and links
# its own stubs. NB: ifeq/endif are make directives (column 0, no tab), resolved at
# parse time; with .ONESHELL the included recipe lines still run as one shell.
ifeq ($(BINARY),main)
	# Wire in the real libcd objects (after the build objects exist — the externals discovery
	# trial-links the whole image). Idempotent: re-running re-derives the externals only.
	if [ -d "$(LIBCD_ELF)" ]; then
		$(PYTHON) tools/psyq_integrate.py --vram-base $(main_VRAM_BASE) --exe $(main_EXE) --symbols $(main_SYMBOLS) $(LIBCD_ELF) $(LD_SCRIPT) $(LIBCD_OBJDIR) $(LIBCD_SYMS) libcd1,libcd2
	else
		echo "  (no $(LIBCD_ELF) — libcd region stays asm stubs; run tools/psyq_build_libs.sh LIBCD)"
	fi
	if [ -d "$(LIBGS_ELF)" ]; then
		$(PYTHON) tools/psyq_integrate.py --vram-base $(main_VRAM_BASE) --exe $(main_EXE) --symbols $(main_SYMBOLS) $(LIBGS_ELF) $(LD_SCRIPT) $(LIBGS_OBJDIR) $(LIBGS_SYMS) libgs1,libgs2,libgs3,libgs4,libgs5,libgs6 0x80051804 0x80057928
	else
		echo "  (no $(LIBGS_ELF) — libgs region stays asm stubs; run tools/make_libgs.sh)"
	fi
	if [ -d "$(LIBETC_ELF)" ]; then
		$(PYTHON) tools/psyq_integrate.py --vram-base $(main_VRAM_BASE) --exe $(main_EXE) --symbols $(main_SYMBOLS) $(LIBETC_ELF) $(LD_SCRIPT) $(LIBETC_OBJDIR) $(LIBETC_SYMS) libetc
	else
		echo "  (no $(LIBETC_ELF) — libetc region stays asm stubs; run tools/psyq_build_libs.sh LIBETC)"
	fi
	if [ -d "$(LIBGPU_ELF)" ]; then
		$(PYTHON) tools/psyq_integrate.py --vram-base $(main_VRAM_BASE) --exe $(main_EXE) --symbols $(main_SYMBOLS) $(LIBGPU_ELF) $(LD_SCRIPT) $(LIBGPU_OBJDIR) $(LIBGPU_SYMS) libgpu
	else
		echo "  (no $(LIBGPU_ELF) — libgpu region stays asm stubs; run tools/psyq_build_libs.sh LIBGPU + curate libgpu_used)"
	fi
	if [ -d "$(LIBMCRD_ELF)" ]; then
		$(PYTHON) tools/psyq_integrate.py --vram-base $(main_VRAM_BASE) --exe $(main_EXE) --symbols $(main_SYMBOLS) $(LIBMCRD_ELF) $(LD_SCRIPT) $(LIBMCRD_OBJDIR) $(LIBMCRD_SYMS) libmcrd1,libmcrd2
	else
		echo "  (no $(LIBMCRD_ELF) — libmcrd region stays asm stubs; run tools/psyq_build_libs.sh LIBMCRD)"
	fi
	if [ -d "$(LIBC2_ELF)" ]; then
		$(PYTHON) tools/psyq_integrate.py --vram-base $(main_VRAM_BASE) --exe $(main_EXE) --symbols $(main_SYMBOLS) $(LIBC2_ELF) $(LD_SCRIPT) $(LIBC2_OBJDIR) $(LIBC2_SYMS) libc2_1,libc2_2
	else
		echo "  (no $(LIBC2_ELF) — libc2 region stays asm stubs; run tools/psyq_build_libs.sh LIBC2)"
	fi
	if [ -d "$(LIBGTE_ELF)" ]; then
		$(PYTHON) tools/psyq_integrate.py --vram-base $(main_VRAM_BASE) --exe $(main_EXE) --symbols $(main_SYMBOLS) $(LIBGTE_ELF) $(LD_SCRIPT) $(LIBGTE_OBJDIR) $(LIBGTE_SYMS) $(LIBGTE_STUBS) 0x8004787C 0x80051804
	else
		echo "  (no $(LIBGTE_ELF) — libgte region stays asm stubs; run tools/psyq_build_libs.sh LIBGTE)"
	fi
	if [ -d "$(SND_ELF)" ]; then
		$(PYTHON) tools/psyq_integrate.py --vram-base $(main_VRAM_BASE) --exe $(main_EXE) --symbols $(main_SYMBOLS) $(SND_ELF) $(LD_SCRIPT) $(SND_OBJDIR) $(SND_SYMS) $(SND_STUBS) 0x8003A444 0x8004239C
	else
		echo "  (no $(SND_ELF) — sound region stays asm stubs; run tools/psyq_build_libs.sh LIBSPU LIBSND + tools/make_snd_used.py)"
	fi
	if [ -d "$(APICARD_ELF)" ]; then
		$(PYTHON) tools/psyq_integrate.py --vram-base $(main_VRAM_BASE) --exe $(main_EXE) --symbols $(main_SYMBOLS) $(APICARD_ELF) $(LD_SCRIPT) $(APICARD_OBJDIR) $(APICARD_SYMS) $(APICARD_STUBS) 0x80061F38 0x80062888
	else
		echo "  (no $(APICARD_ELF) — apicard region stays asm stubs; run tools/psyq_build_libs.sh LIBAPI LIBCARD + tools/make_apicard_used.py)"
	fi
endif
	SYMS=""; [ -f "$(LIBCD_SYMS)" ] && SYMS="-T $(LIBCD_SYMS)"; [ -f "$(LIBGS_SYMS)" ] && SYMS="$$SYMS -T $(LIBGS_SYMS)"; [ -f "$(LIBETC_SYMS)" ] && SYMS="$$SYMS -T $(LIBETC_SYMS)"; [ -f "$(LIBGPU_SYMS)" ] && SYMS="$$SYMS -T $(LIBGPU_SYMS)"; [ -f "$(LIBMCRD_SYMS)" ] && SYMS="$$SYMS -T $(LIBMCRD_SYMS)"; [ -f "$(LIBC2_SYMS)" ] && SYMS="$$SYMS -T $(LIBC2_SYMS)"; [ -f "$(LIBGTE_SYMS)" ] && SYMS="$$SYMS -T $(LIBGTE_SYMS)"; [ -f "$(SND_SYMS)" ] && SYMS="$$SYMS -T $(SND_SYMS)"; [ -f "$(APICARD_SYMS)" ] && SYMS="$$SYMS -T $(APICARD_SYMS)"
	echo "  LD      $(ELF)"
	$(LD) -T $(LD_SCRIPT) -T $(UNDEF_SYMS) -T $(UNDEF_FUNCS) $$SYMS --no-check-sections -Map $(MAPFILE) -o $(ELF)
	echo "  OBJCOPY $@"
	$(OBJCOPY) -O binary $(ELF) $@

# build = produce $(OUT) and verify its SHA1 (check pulls in $(OUT)).
build: check

# check: SHA1 of the build vs the committed original hash. The definition of "build OK".
check: $(OUT)
	@got=$$(sha1sum $(OUT) | cut -d' ' -f1)
	want=$$(cut -d' ' -f1 $(CHECK_SHA) 2>/dev/null)
	if [ -z "$$want" ]; then echo "[FAIL] $(CHECK_SHA) missing or empty"; exit 1; fi
	if [ "$$got" = "$$want" ]; then
		echo "[ OK ] $(OUT)"
		echo "       sha1 $$got == $(CHECK_SHA)  (BYTE-IDENTICAL)"
	else
		echo "[FAIL] $(OUT)"
		echo "       got  $$got"
		echo "       want $$want"
		exit 1
	fi

# expected: snapshot a SHA1-verified build into expected/build/ as the asm-differ
# baseline for Phase 6 (asm-differ diffs build/<obj> vs expected/build/<obj>).
expected: build
	@set -e
	mkdir -p expected/build
	# Per-binary-safe (Phase 10): refresh ONLY the active binary's image dir, then merge-copy
	# build/ into the shared expected/ mirror. cp MERGES (never deletes), so `make expected
	# BINARY=X` preserves binary Y's baseline even when Y isn't currently in build/ (the old
	# `rm -rf expected/build` wiped every sibling). asm-differ reads expected/$(OUT) (image mode)
	# + expected/build/<obj> (object mode); both resolve under the merged mirror.
	rm -rf expected/$(OUT_DIR)
	cp -r build/. expected/build/
	echo "expected: baseline refreshed for binary=$(BINARY) -> expected/build/ (siblings preserved)"

# clean: remove ALL regenerable outputs (build/ + the splat tree) so a config change
# is followed by a stale-free `make clean && make extract && make build` (H3).
clean:
	@rm -rf build expected asm undefined_syms_auto.txt undefined_funcs_auto.txt
	@rm -f include/include_asm.h include/macro.inc include/labels.inc include/gte_macros.inc
	@echo "clean: removed build/, expected/, and the regenerated splat tree (asm/, include macros, undefined_*_auto.txt)."