132 lines
3.0 KiB
Makefile
132 lines
3.0 KiB
Makefile
# Makefile for standalone MontaukOS app (template)
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# Usage:
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# make Build the app
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# make clean Remove build artifacts
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# make install Copy ELF to MontaukOS ramdisk bin directory
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#
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# Copy this entire directory, rename it, and edit APP_NAME/SRCS below.
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MAKEFLAGS += -rR
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.SUFFIXES:
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# ---- App configuration ----
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# Change these for your app:
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APP_NAME := myapp
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SRCS := src/main.cpp src/stb_truetype_impl.cpp src/cxxrt.cpp
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# Optional features — set to 1 to enable:
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# USE_TLS=1 HTTPS/TLS support (libtls + libbearssl)
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# USE_JPEG=1 JPEG image decoding (libjpeg / stb_image)
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# USE_CRT=1 Link the shared Montauk CRT and use main(argc, argv)
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USE_TLS ?= 0
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USE_JPEG ?= 0
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USE_CRT ?= 0
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# ---- Toolchain ----
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# Looks for the cross-compiler via MONTAUKOS, then falls back to system g++.
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MONTAUKOS ?= $(HOME)/dev/MontaukOS
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TOOLCHAIN := $(MONTAUKOS)/toolchain/local/bin/x86_64-elf-
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ifneq ($(wildcard $(TOOLCHAIN)gcc),)
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CXX := $(TOOLCHAIN)g++
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else
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CXX := g++
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endif
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# ---- Paths ----
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SYSROOT := sysroot
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OBJDIR := obj
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BINDIR := bin
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LINK_LD := link.ld
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# ---- Compiler flags ----
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CXXFLAGS := \
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-std=gnu++20 \
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-g -O2 -pipe \
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-Wall \
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-Wextra \
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-Wno-unused-parameter \
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-Wno-unused-function \
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-nostdinc \
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-ffreestanding \
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-fno-stack-protector \
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-fno-stack-check \
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-fno-PIC \
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-fno-rtti \
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-fno-exceptions \
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-ffunction-sections \
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-fdata-sections \
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-m64 \
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-march=x86-64 \
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-msse \
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-msse2 \
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-mno-red-zone \
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-mcmodel=small \
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-I $(SYSROOT)/include \
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-I src \
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-isystem $(SYSROOT)/include/libc
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ifeq ($(USE_CRT),1)
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CXXFLAGS += -DMONTAUK_USE_CRT=1
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endif
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# ---- Linker flags ----
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LDFLAGS := \
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-nostdlib \
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-static \
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-Wl,--build-id=none \
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-Wl,--gc-sections \
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-Wl,-m,elf_x86_64 \
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-z max-page-size=0x1000 \
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-T $(LINK_LD)
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# ---- Libraries ----
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# Order matters: libtls depends on libbearssl, everything depends on liblibc.
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LIBS :=
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ifeq ($(USE_TLS),1)
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LIBS += $(SYSROOT)/lib/libtls.a $(SYSROOT)/lib/libbearssl.a
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endif
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ifeq ($(USE_JPEG),1)
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LIBS += $(SYSROOT)/lib/libjpeg.a
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endif
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LIBS += $(SYSROOT)/lib/liblibc.a
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CRT_PRELUDE :=
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CRT_POSTLUDE :=
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ifeq ($(USE_CRT),1)
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CRT_PRELUDE := $(SYSROOT)/lib/crt1.o $(SYSROOT)/lib/crti.o
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CRT_POSTLUDE := $(SYSROOT)/lib/crtn.o
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endif
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# ---- Build rules ----
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OBJS := $(addprefix $(OBJDIR)/,$(SRCS:.cpp=.o))
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TARGET := $(BINDIR)/$(APP_NAME).elf
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.PHONY: all clean install
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all: $(TARGET)
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$(TARGET): $(OBJS) $(LINK_LD) Makefile
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@mkdir -p $(BINDIR)
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$(CXX) $(CXXFLAGS) $(LDFLAGS) $(CRT_PRELUDE) $(OBJS) $(LIBS) $(CRT_POSTLUDE) -o $@
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@echo "Built: $@"
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$(OBJDIR)/%.o: %.cpp Makefile
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@mkdir -p $(dir $@)
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$(CXX) $(CXXFLAGS) -c $< -o $@
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clean:
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rm -rf $(OBJDIR) $(BINDIR)
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# Copy the built ELF into the MontaukOS ramdisk tree for testing.
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install: $(TARGET)
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@mkdir -p $(MONTAUKOS)/programs/bin/apps/$(APP_NAME)
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cp $(TARGET) $(MONTAUKOS)/programs/bin/apps/$(APP_NAME)/$(APP_NAME).elf
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@echo "Installed to $(MONTAUKOS)/programs/bin/apps/$(APP_NAME)/"
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