Makefile.gmloader

ARCH ?= aarch64-linux-gnu
CROSS ?= ${ARCH}-
CC := ${CROSS}gcc
CXX := ${CROSS}g++
LD := ${CROSS}ld
PKG_CONFIG := ${CROSS}pkg-config

BUILD_DATE = $(shell date +"%Y%m%d_%H%M%S")
GIT_BRANCH = ${GITHUB_REF_NAME}
GIT_BRANCH_FRIENDLY = $(subst -,_,$(GIT_BRANCH))

DEVICE_ARCH = aarch64

ifeq ($(ARCH), arm-linux-gnueabihf)
	DEVICE_ARCH = armhf
endif

LIBS=\
	-pthread \
	-lm \
	-lrt \
	$(shell ${PKG_CONFIG} sdl2 --libs) \
	$(shell ${PKG_CONFIG} zlib --libs) \
	$(shell ${PKG_CONFIG} libzip --libs)

# General compilation flags
OPTM?=-Os
COMMONFLAGS=-Wno-strict-aliasing -Werror=return-type -I. -I./thunks/ -I./loader/ -I./gmloader/ -I./build/${ARCH}/thunks/libc -I./jni/ -I./3rdparty/json/include ${OPTM} -MMD
CFLAGS=$(shell ${PKG_CONFIG} sdl2 --cflags) ${COMMONFLAGS}
CXXFLAGS=-std=gnu++2a -fuse-cxa-atexit $(shell ${PKG_CONFIG} sdl2 --cflags) ${COMMONFLAGS}
LDFLAGS=-L3rdparty/libbsd/src/.libs ${OPTM} -Wl,--defsym,BUILD_DATE_$(BUILD_DATE)=0 -Wl,--defsym,GIT_HASH_$(GITHUB_SHA)=0 -Wl,--defsym,GIT_BRANCH_$(GIT_BRANCH_FRIENDLY)=0

# General pre-processing flags
LLVM_FILE?=
LLVM_INC?=/usr/${ARCH}/include
GENERATE?=--llvm-includes ${LLVM_INC}

ifneq (${LLVM_FILE},)
	GENERATE+=--llvm-library-file "${LLVM_FILE}"
endif

# Used by generate_libc.py to generate the function tables that are exported to the
# application.
LIBC_SRCS=$(filter-out $(if ${exclude_file1},,thunks/libc/libc_table.cpp),$(wildcard thunks/libc/*.cpp))
LIBC_TABS=build/${ARCH}/thunks/libc/impl_header.h build/${ARCH}/thunks/libc/impl_tab.h

# Files that are compiled into your loader
LOADER_OBJS=$(patsubst %.cpp,build/%.cpp.o,$(wildcard loader/*.cpp))
THUNK_OBJS=$(patsubst %.cpp,build/%.cpp.o,$(wildcard thunks/*/*.cpp))
JNI_OBJS:=$(patsubst %.cpp,build/%.cpp.o,$(wildcard jni/classes/*.cpp))
JNI_OBJS+=$(patsubst %.cpp,build/%.cpp.o,$(wildcard jni/*.cpp))
GMLOADER_OBJS:=$(patsubst %.cpp,build/%.cpp.o,$(wildcard gmloader/*.cpp))
GMLOADER_OBJS+=$(patsubst %.cpp,build/%.cpp.o,$(wildcard gmloader/classes/*.cpp))

GENERIC_OBJ:=\
	${LOADER_OBJS} \
	${THUNK_OBJS} \
	${JNI_OBJS} \
	${GMLOADER_OBJS}

OBJ=$(patsubst build/%,build/${ARCH}/%,${GENERIC_OBJ})

all: build/${ARCH}/gmloader/gmloadernext.${DEVICE_ARCH}

clean:
	rm -rf build/${ARCH}

# Include libbsd/libmd and their relevant flags
-include 3rdparty/libbsd.mk

# By repeating the generated headers on this rule, we force them to start building
# as soon as possible, so libc_table.cpp isn't waiting forever.
build/${ARCH}/gmloader/gmloadernext.${DEVICE_ARCH}: ${LIBC_TABS} $(BSD_OBJ) $(OBJ)
	$(CXX) $(LDFLAGS) -o $@ $(OBJ) $(BSD_OBJ) $(LIBS)

build/${ARCH}/%.cpp.o: %.cpp
	@mkdir -p $(@D)
	$(CXX) $(CXXFLAGS) $(BSD_FLAGS) $(MD_FLAGS) -c $< -o $@

# The libc_table.cpp symbol table depends on the generated headers
%/libc_table.cpp: ${LIBC_TABS};

# The generated headers depend on the libc sources
${LIBC_TABS} &: ${LIBC_SRCS} thunks/libc/symtab thunks/libc/symtab_exclude thunks/libc/c_prototypes.h thunks/libc/common.hpp
	@mkdir -p $(@D)
	python3 scripts/generate_libc.py ${ARCH} ${GENERATE}

# Include all build dependencies too
-include $(OBJ:%.o=%.d)