# Shared variables used by per-target Makefile fragments.
#
# Source this only via the per-target make file (make/iigs.mk etc).

REPO_DIR    := $(abspath $(dir $(lastword $(MAKEFILE_LIST)))/..)

# Tool paths (AMIGA_CC, LLVM816_ROOT, LIBXMP_DIR, ...) come from the file
# install.sh generates; it is the only place they are defined.
-include $(REPO_DIR)/toolchains/config.mk

# $(call requireTool,FILE,INSTALL-TARGET): stop with a clear message when a
# port's compiler is missing, instead of letting recipes run an empty
# command. Goals that only clean need no toolchain. The missing path is not
# printed: with nothing installed it is empty or a bare suffix, and
# `./install.sh doctor` names exactly what is wrong.
requireTool = $(if $(filter-out clean%,$(or $(MAKECMDGOALS),all)),$(if $(wildcard $(1)),,$(error $(2) is not installed; run: ./install.sh install $(2))))

# Space Taxi's levels are extracted from the original C64 game image, which
# is not part of the repository (the owner's private bundle provides it; see
# ./install.sh import). Without it every port still builds the
# STAXI binary and skips only the data derived from the image.
STAXI_RAW_DUMP   := $(REPO_DIR)/stuff/spacetaxi/raw.bin
ROMTOLEVEL_BIN   := $(REPO_DIR)/examples/spacetaxi/assets/romToLevel.py
STAXI_LEVEL_NUMS := 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
HAVE_STAXI_DATA  := $(if $(wildcard $(STAXI_RAW_DUMP)),1)
# $(call staxiData,TARGETS): TARGETS, or nothing (with a note, once per make
# process) without the image.
staxiData = $(if $(HAVE_STAXI_DATA),$(1),$(staxiNote))
staxiNote = $(if $(staxiNoted),,$(eval staxiNoted := 1)$(info note: Space Taxi data skipped: stuff/spacetaxi/raw.bin is not present))
INCLUDE_DIR := $(REPO_DIR)/include
# Machine-specific code lives in src/<machine>/ (iigs, amiga, atarist, dos,
# x68000, dvx); code shared across machines of one CPU lives in a processor
# folder (src/m68k, src/x86).
SRC_DIR     := $(REPO_DIR)/src
SRC_CORE    := $(REPO_DIR)/src/core
SRC_CG      := $(REPO_DIR)/src/codegen
SRC_68K     := $(REPO_DIR)/src/m68k
SRC_X86     := $(REPO_DIR)/src/x86
EXAMPLES    := $(REPO_DIR)/examples

# The tile-bank example (examples/tilebank) loads the host gate's fixture, so
# the host (scripts/check-tilebank.sh) and every port share one expected hash.
# Each port stages its DATA/tilebank with TILEBANK_STAGE: its own bake, every
# other target's bake (to be refused) and the expected pixels.
TILEBANK_PNG       := $(REPO_DIR)/tests/host/tileBank.png
TILEBANK_STAGE     := $(REPO_DIR)/tests/host/tileBankStage.py
TILEBANK_BAKE_DEPS := $(TILEBANK_PNG) $(TILEBANK_STAGE) $(REPO_DIR)/tools/assetbake/assetbake.py

# Portable C sources for libjoey -- present on every target.
CORE_C_SRCS := $(wildcard $(SRC_CORE)/*.c)

# Generic portable-C op defaults (the src/generic backend) -- present on every
# target. spriteEmitStub.c is excluded: it is the no-codegen template and
# redefines jlSpriteCompile / spriteCompiledDraw, which the real
# src/codegen/spriteCompile.c already provides.
GENERIC_C_SRCS := $(filter-out %/spriteEmitStub.c, $(wildcard $(SRC_DIR)/generic/*.c))

# Common include flags. Per-port code can include port.h / surfaceInternal.h
# directly because SRC_CORE is in the include path. EXTRA_CFLAGS is the one
# command-line hook for extra flags on every port (make EXTRA_CFLAGS=-DX);
# make/iigs.mk, which does not use COMMON_CFLAGS, honours it too.
COMMON_CFLAGS := -I$(INCLUDE_DIR) -I$(SRC_CORE) -Wall -Wextra -Werror -O2 $(EXTRA_CFLAGS)