Build system & dependency refactoring

Switched to a makefile + clang build system
Now builds as a library by default
Removed SDL2 dependency
Changed RT64 integration to use zilmar spec in order to pass a window
handle
Proper unaligned loads and stores implementation

Makefile

@@ -0,0 +1,108 @@
+CONFIG ?= Debug
+LIB ?= 0
+
+ifeq ($(CONFIG),Debug)
+BUILD_DIR     := build/debug
+FUNC_OPTFLAGS := -Og -g -fno-strict-aliasing
+OPTFLAGS      := -Og -g -fno-strict-aliasing
+# Static C runtime linking
+LIBS          := -Wl,/nodefaultlib:libcmt -Wl,/nodefaultlib:ucrt -Wl,/nodefaultlib:libucrt -llibcmtd -llibvcruntimed -llibucrtd
+# Dynamic
+# LIBS          := -Wl,/nodefaultlib:libcmt -Wl,/nodefaultlib:ucrt -Wl,/nodefaultlib:libucrt -lmsvcrtd -lvcruntimed -lucrtd
+else ifeq ($(CONFIG),Release)
+BUILD_DIR     := build/release
+FUNC_OPTFLAGS := -O2 -g -fno-strict-aliasing
+OPTFLAGS      := -O2 -g -fno-strict-aliasing
+# Static C runtime linking
+LIBS          := -Wl,/nodefaultlib:libcmt -Wl,/nodefaultlib:ucrt -Wl,/nodefaultlib:libucrt -llibcmt -llibvcruntime -llibucrt
+# Dynamic
+# LIBS          := -Wl,/nodefaultlib:libcmt -Wl,/nodefaultlib:ucrt -Wl,/nodefaultlib:libucrt -lmsvcrt -lvcruntime -lucrt
+else
+$(error "Invalid build configuration: $(CONFIG)")
+endif
+
+SRC_DIRS := portultra src rsp
+
+FUNCS_DIR := RecompiledFuncs
+FUNCS_LIB := $(BUILD_DIR)/RecompiledFuncs.lib
+FUNCS_C_SRCS   := $(wildcard $(FUNCS_DIR)/*.c)
+FUNCS_CXX_SRCS := $(wildcard $(FUNCS_DIR)/*.cpp)
+
+FUNC_BUILD_DIR := $(BUILD_DIR)/RecompiledFuncs
+FUNCS_C_OBJS   := $(addprefix $(BUILD_DIR)/,$(FUNCS_C_SRCS:.c=.o))
+FUNCS_CXX_OBJS := $(addprefix $(BUILD_DIR)/,$(FUNCS_CXX_SRCS:.cpp=.o))
+ALL_FUNC_OBJS  := $(FUNCS_C_OBJS) $(FUNCS_CXX_OBJS)
+
+BUILD_SRC_DIRS := $(addprefix $(BUILD_DIR)/,$(SRC_DIRS))
+C_SRCS   := $(foreach dir,$(SRC_DIRS),$(wildcard $(dir)/*.c))
+CXX_SRCS := $(foreach dir,$(SRC_DIRS),$(wildcard $(dir)/*.cpp))
+
+C_OBJS   := $(addprefix $(BUILD_DIR)/,$(C_SRCS:.c=.o))
+CXX_OBJS := $(addprefix $(BUILD_DIR)/,$(CXX_SRCS:.cpp=.o))
+ALL_OBJS := $(C_OBJS) $(CXX_OBJS)
+
+
+CC  := clang
+CXX := clang++
+LIB := clang++
+LD  := clang++
+
+FUNC_CFLAGS   := $(FUNC_OPTFLAGS) -c -Wno-unused-but-set-variable
+FUNC_CXXFLAGS := $(FUNC_OPTFLAGS) -std=c++20 -c
+FUNC_CPPFLAGS := -Iinclude
+LIBFLAGS      := $(OPTFLAGS) -fuse-ld=llvm-lib
+LIB_DIR       ?= C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.29.30133\lib\x64
+UCRT_DIR      ?= C:\Program Files (x86)\Windows Kits\10\lib\10.0.22000.0\ucrt\x64;
+SDK_DIR       ?= C:\Program Files (x86)\Windows Kits\10\lib\10.0.22000.0\um\x64
+
+WARNFLAGS := -Wall -Wextra -Wpedantic -Wno-gnu-anonymous-struct
+CFLAGS    := -ffunction-sections -fdata-sections $(OPTFLAGS) $(WARNFLAGS) -c
+CXXFLAGS  := -ffunction-sections -fdata-sections $(OPTFLAGS) $(WARNFLAGS) -std=c++20 -c
+CPPFLAGS  := -Iinclude -Ithirdparty
+LDFLAGS   := -v -Wl,/OPT:REF $(OPTFLAGS) $(LIBS) -L"$(LIB_DIR:;=)" -L"$(UCRT_DIR:;=)" -L"$(SDK_DIR:;=)" lib/RT64/$(CONFIG)/RT64.lib
+
+ifeq ($(LIB),1)
+TARGET := $(BUILD_DIR)/MMRecomp.dll
+LDFLAGS += -shared
+else
+TARGET := $(BUILD_DIR)/MMRecomp.exe
+endif
+
+default: $(TARGET)
+
+clean: 
+	rmdir /S /Q $(subst /,\\,$(BUILD_DIR))
+
+cleanfuncs:
+
+
+$(FUNCS_CXX_OBJS) : $(BUILD_DIR)/%.o : %.cpp | $(FUNC_BUILD_DIR)
+	@$(CXX) $(FUNC_CXXFLAGS) $(FUNC_CPPFLAGS) $^ -o $@
+	
+$(FUNCS_C_OBJS) : $(BUILD_DIR)/%.o : %.c | $(FUNC_BUILD_DIR)
+	@$(CC) $(FUNC_CFLAGS) $(FUNC_CPPFLAGS) $^ -o $@
+
+$(FUNCS_LIB): $(ALL_FUNC_OBJS) | $(BUILD_DIR)
+	$(LIB) $(LIBFLAGS) $(FUNC_BUILD_DIR)/*.o -o $@
+
+
+
+$(CXX_OBJS) : $(BUILD_DIR)/%.o : %.cpp | $(BUILD_SRC_DIRS)
+	$(CXX) -MMD -MF $(@:.o=.d) $(CXXFLAGS) $(CPPFLAGS) $< -o $@
+	
+$(C_OBJS) : $(BUILD_DIR)/%.o : %.c | $(BUILD_SRC_DIRS)
+	$(CC) -MMD -MF $(@:.o=.d) $(CFLAGS) $(CPPFLAGS) $< -o $@
+
+$(TARGET): $(FUNCS_LIB) $(ALL_OBJS) | $(BUILD_SRC_DIRS)
+	$(LD) $(LDFLAGS) -o $@ $^
+
+$(BUILD_SRC_DIRS) $(FUNC_BUILD_DIR) $(BUILD_DIR):
+	mkdir $(subst /,\\,$@)
+
+-include $(ALL_OBJS:.o=.d)
+
+MAKEFLAGS += --no-builtin-rules
+.SUFFIXES:
+.PHONY: default clean cleanfuncs
+
+print-% : ; $(info $* is a $(flavor $*) variable set to [$($*)]) @true