Setup build enviorment

Makefile

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+#Build architecture/variant string, possible values: x86, armv7le, etc...
+PLATFORM ?= PSX
+
+#Build profile, possible values: release, debug, profile, coverage
+BUILD_DIR     ?= bin
+BUILD_PROFILE ?= debug
+
+CONFIG_NAME ?= $(PLATFORM)-$(BUILD_PROFILE)
+OUTPUT_DIR   = $(BUILD_DIR)/$(CONFIG_NAME)
+TARGET       = $(OUTPUT_DIR)/$(ARTIFACT)
+
+#Compiler definitions
+HAS_LINUX_MIPS_GCC = $(shell which mipsel-linux-gnu-gcc > /dev/null 2> /dev/null && echo true || echo false)
+ifeq ($(HAS_LINUX_MIPS_GCC),true)
+PREFIX ?= mipsel-linux-gnu
+FORMAT ?= elf32-tradlittlemips
+else
+PREFIX ?= mipsel-none-elf
+FORMAT ?= elf32-littlemips
+endif
+
+CC  ?= $(PREFIX)-gcc-10
+CXX ?= $(PREFIX)-g++-10
+LD  ?= $(CXX)
+AR  ?= ar
+
+#architecture flags
+ARCHFLAGS  = -march=mips1 -mabi=32 -EL -fno-pic -mno-shared -mno-abicalls -mfp32
+ARCHFLAGS += -fno-stack-protector -nostdlib -ffreestanding
+
+#Compiler flags for build profiles
+CCFLAGS_release += -O3
+CCFLAGS_debug   += -O0
+
+CXXFLAGS += -fno-exceptions -fno-rtti
+
+USE_FUNCTION_SECTIONS ?= true
+ifeq ($(USE_FUNCTION_SECTIONS),true)
+CCFLAGS_all += -ffunction-sections
+endif
+CCFLAGS_all += -mno-gpopt -fomit-frame-pointer
+CCFLAGS_all += -fno-builtin -fno-strict-aliasing -Wno-attributes
+CCFLAGS_all += $(ARCHFLAGS)
+
+CCFLAGS_all += $(CCFLAGS_$(BUILD_PROFILE))
+
+#Linker flags
+LDFLAGS_release += -Os
+
+LDFLAGS_all += -Wl,-Map=$(TARGET).map -nostdlib -T$(LDSCRIPT) -static -Wl,--gc-sections -Wl,--build-id=none
+LDFLAGS_all += $(ARCHFLAGS) -Wl,--oformat=$(FORMAT)
+LDFLAGS_all += $(LDFLAGS_$(BUILD_PROFILE))
+
+LIBS_all    += $(LIBS_$(BUILD_PROFILE))
+
+DEPS = -Wp,-MMD,$(@:%.o=%.d),-MT,$@
+
+#Macro to expand files recursively: parameters $1 -  directory, $2 - extension, i.e. cpp
+rwildcard = $(wildcard $(addprefix $1/*.,$2)) $(foreach d,$(wildcard $1/*),$(call rwildcard,$d,$2))
+
+#Object files list
+OBJS = $(addprefix $(OUTPUT_DIR)/,$(addsuffix .o, $(subst ..,!super,$(basename $(SRCS)))))
+
+#Compiling rule
+$(OUTPUT_DIR)/%.o: %.c
+	@mkdir -p $(dir $@)
+	$(CC) -c $(DEPS) -o $@ $(CCFLAGS_all) $(CCFLAGS) $<
+
+$(OUTPUT_DIR)/%.o: %.cpp
+	@mkdir -p $(dir $@)
+	$(CXX) -c $(DEPS) -o $@ $(CCFLAGS_all) $(CXXFLAGS) $<
+
+.SECONDEXPANSION:
+$(OUTPUT_DIR)/%.o: $$(subst !super,..,%.s)
+	@mkdir -p $(dir $@)
+	$(CC) $(ARCHFLAGS) -I$(PCSX_REDUX) -g -c -o $@ $<
+
+#Linking rule
+$(TARGET).a: $(OBJS)
+	@mkdir -p $(dir $@)
+	$(AR) rcs $(TARGET).a $(OBJS)
+
+
+$(TARGET).elf: $(OBJS)
+	$(LD) -o $(TARGET).elf $(LDFLAGS_all) $(LDFLAGS) $(OBJS) $(LIBS_all) $(LIBS)
+
+#Strips the psexe
+$(TARGET).psexe: $(TARGET).elf
+	$(PREFIX)-objcopy $(addprefix -R , $(OVERLAYSECTION)) -O binary $< $@
+
+#Rules section for default compilation and linking
+rebuild: 
+	$(MAKE) clean 
+	$(MAKE) all
+
+#Inclusion of dependencies (object files to source and includes)
+-include $(OBJS:%.o=%.d)