Makefile: start moving to macro based Makefile target generation
- libam-riscv32-nemu is working. - libam on platforms other than riscv32-nemu has not been worked on yet. - klib has not been worked on yet.
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5 changed files with 93 additions and 92 deletions
87
Makefile
87
Makefile
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@ -1,4 +1,5 @@
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# Makefile for AbstractMachine Kernels and Libraries
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include scripts/helpers/rules.mk
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### *Get a more readable version of this Makefile* by `make html` (requires python-markdown)
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html:
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@ -17,9 +18,6 @@ endif
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### Override checks when `make clean/clean-all/html`
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ifeq ($(findstring $(MAKECMDGOALS),clean|clean-all|html),)
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### Print build info message
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$(info # Building $(NAME)-$(MAKECMDGOALS) [$(ARCH)])
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### Check: environment variable `$AM_HOME` looks sane
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ifeq ($(wildcard $(AM_HOME)/am/include/am.h),)
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$(error $$AM_HOME must be an AbstractMachine repo)
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@ -36,33 +34,16 @@ ARCH_SPLIT = $(subst -, ,$(ARCH))
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ISA = $(word 1,$(ARCH_SPLIT))
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PLATFORM = $(word 2,$(ARCH_SPLIT))
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### Check if there is something to build
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ifeq ($(flavor SRCS), undefined)
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$(error Nothing to build)
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endif
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### Checks end here
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endif
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## 2. General Compilation Targets
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### Create the destination directory (`build/$ARCH`)
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WORK_DIR = $(shell pwd)
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DST_DIR = $(WORK_DIR)/build/$(ARCH)
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$(shell mkdir -p $(DST_DIR))
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### Compilation targets (a binary image or archive)
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IMAGE_REL = build/$(NAME)-$(ARCH)
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IMAGE = $(abspath $(IMAGE_REL))
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ARCHIVE = $(WORK_DIR)/build/$(NAME)-$(ARCH).a
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### Collect the files to be linked: object files (`.o`) and libraries (`.a`)
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OBJS = $(addprefix $(DST_DIR)/, $(addsuffix .o, $(basename $(SRCS))))
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LIBS := $(sort $(LIBS) am klib) # lazy evaluation ("=") causes infinite recursions
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LINKAGE = $(OBJS) \
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$(addsuffix -$(ARCH).a, $(join \
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$(addsuffix /build/, $(addprefix $(AM_HOME)/, $(LIBS))), \
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$(LIBS) ))
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WORK_DIR ?= $(shell pwd)
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DST_DIR ?= $(WORK_DIR)/build/$(ARCH)
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LIB_BUILDDIR ?= $(DST_DIR)/lib
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INSTALLDIR ?= $(WORK_DIR)/build/install/$(ARCH)
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## 3. General Compilation Flags
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@ -76,27 +57,13 @@ OBJDUMP ?= $(CROSS_COMPILE)objdump
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OBJCOPY ?= $(CROSS_COMPILE)objcopy
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READELF ?= $(CROSS_COMPILE)readelf
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### Compilation flags
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INC_PATH += $(WORK_DIR)/include $(addsuffix /include/, $(addprefix $(AM_HOME)/, $(LIBS)))
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INCFLAGS += $(addprefix -I, $(INC_PATH))
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ARCH_H := arch/$(ARCH).h
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CFLAGS += -lm -g -O3 -MMD -Wall $(INCFLAGS) \
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-D__ISA__=\"$(ISA)\" -D__ISA_$(shell echo $(ISA) | tr a-z A-Z)__ \
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-D__ARCH__=$(ARCH) -D__ARCH_$(shell echo $(ARCH) | tr a-z A-Z | tr - _) \
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-D__PLATFORM__=$(PLATFORM) -D__PLATFORM_$(shell echo $(PLATFORM) | tr a-z A-Z | tr - _) \
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-DARCH_H=\"$(ARCH_H)\" \
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-fno-asynchronous-unwind-tables -fno-builtin -fno-stack-protector \
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-Wno-main -U_FORTIFY_SOURCE -fvisibility=hidden
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CXXFLAGS += $(CFLAGS) -ffreestanding -fno-rtti -fno-exceptions
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ASFLAGS += $(INCFLAGS)
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LDFLAGS += -z noexecstack
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INTERFACE_LDFLAGS += -z noexecstack
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## 4. Arch-Specific Configurations
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### Paste in arch-specific configurations (e.g., from `scripts/x86_64-qemu.mk`)
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-include $(AM_HOME)/scripts/$(ARCH).mk
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### Fall back to native gcc/binutils if there is no cross compiler
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ifeq ($(wildcard $(shell which $(CC))),)
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$(info # $(CC) not found; fall back to default gcc and binutils)
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@ -105,43 +72,31 @@ endif
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## 5. Compilation Rules
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### Rule (compile): a single `.c` -> `.o` (gcc)
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$(DST_DIR)/%.o: %.c
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@mkdir -p $(dir $@) && echo + CC $<
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@$(CC) -std=gnu11 $(CFLAGS) -c -o $@ $(realpath $<)
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### Build libam
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### Rule (compile): a single `.cc` -> `.o` (g++)
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$(DST_DIR)/%.o: %.cc
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@mkdir -p $(dir $@) && echo + CXX $<
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@$(CXX) -std=c++17 $(CXXFLAGS) -c -o $@ $(realpath $<)
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#### Include archetecture specific build flags
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include $(AM_HOME)/scripts/$(ARCH).mk
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### Rule (compile): a single `.cpp` -> `.o` (g++)
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$(DST_DIR)/%.o: %.cpp
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@mkdir -p $(dir $@) && echo + CXX $<
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@$(CXX) -std=c++17 $(CXXFLAGS) -c -o $@ $(realpath $<)
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#### Generating build rules with ADD_LIBRARY call. Target specific build flags can be tuned via changing prefixed variables (AM_ here)
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AM_INCPATH += $(AM_HOME)/am/include $(AM_HOME)/am/src $(AM_HOME)/klib/include
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AM_CFLAGS += -lm -g -O3 -MMD -Wall $(addprefix -I, $(AM_INCPATH)) \
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-D__ISA__=\"$(ISA)\" -D__ISA_$(shell echo $(ISA) | tr a-z A-Z)__ \
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-D__ARCH__=$(ARCH) -D__ARCH_$(shell echo $(ARCH) | tr a-z A-Z | tr - _) \
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-D__PLATFORM__=$(PLATFORM) -D__PLATFORM_$(shell echo $(PLATFORM) | tr a-z A-Z | tr - _) \
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-DARCH_H=\"$(ARCH_H)\" \
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-fno-asynchronous-unwind-tables -fno-builtin -fno-stack-protector \
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-Wno-main -U_FORTIFY_SOURCE -fvisibility=hidden
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### Rule (compile): a single `.S` -> `.o` (gcc, which preprocesses and calls as)
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$(DST_DIR)/%.o: %.S
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@mkdir -p $(dir $@) && echo + AS $<
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@$(AS) $(ASFLAGS) -c -o $@ $(realpath $<)
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$(eval $(call ADD_LIBRARY,$(LIB_BUILDDIR)/libam-$(ARCH).a,AM_))
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### Rule (recursive make): build a dependent library (am, klib, ...)
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$(LIBS): %:
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@$(MAKE) -s -C $(AM_HOME)/$* archive
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ALL := am
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all: $(addsuffix -$(ARCH).a, $(addprefix $(LIB_BUILDDIR)/lib, $(ALL)))
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### Rule (link): objects (`*.o`) and libraries (`*.a`) -> `IMAGE.elf`, the final ELF binary to be packed into image (ld)
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$(IMAGE).elf: $(OBJS) $(LIBS)
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@echo + LD "->" $(IMAGE_REL).elf
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@$(LD) $(LDFLAGS) -o $(IMAGE).elf --start-group $(LINKAGE) --end-group
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### Rule (archive): objects (`*.o`) -> `ARCHIVE.a` (ar)
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$(ARCHIVE): $(OBJS)
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@echo + AR "->" $(shell realpath $@ --relative-to .)
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@$(AR) rcs $(ARCHIVE) $(OBJS)
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### Rule (`#include` dependencies): paste in `.d` files generated by gcc on `-MMD`
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-include $(addprefix $(DST_DIR)/, $(addsuffix .d, $(basename $(SRCS))))
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## 6. Miscellaneous
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### Build order control
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47
scripts/helpers/rules.mk
Normal file
47
scripts/helpers/rules.mk
Normal file
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@ -0,0 +1,47 @@
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# Usage:
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# $(1): Target prefix
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#
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# Generate build rules for files in variable <PREFIX>_SRCS. Use <PREFIX>_CFLAGS,
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# <PREFIX>_CXXFLAGS, <PREFIX>_ASFLAGS to control build flags.
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# E.g:
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# $(eval $(call COMPILE_RULES,AM_))
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define COMPILE_RULES
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AM_OBJS := $(addprefix $(DST_DIR)/, $(addsuffix .o, $(AM_SRCS)))
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### Rule (compile): a single `.c` -> `.c.o` (gcc)
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$$(filter %.c.o, $$($(1)OBJS)): $$(DST_DIR)/%.c.o: %.c
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@mkdir -p $$(dir $$@) && echo + CC $$<
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@$$(CC) $$($(1)CFLAGS) -c -o $$@ $$(realpath $$<)
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### Rule (compile): a single `.cc` -> `.cc.o` (g++)
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$$(filter %.cc.o, $$($(1)OBJS)): $$(DST_DIR)/%.cc.o: %.cc
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@mkdir -p $$(dir $$@) && echo + CXX $$<
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@$$(CXX) $$($(1)CXXFLAGS) -c -o $$@ $$(realpath $$<)
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### Rule (compile): a single `.cpp` -> `.cpp.o` (g++)
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$$(filter %.cpp.o, $$($(1)OBJS)): $$(DST_DIR)/%.cpp.o: %.cpp
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@mkdir -p $$(dir $$@) && echo + CXX $$<
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@$$(CXX) $$($(1)CXXFLAGS) -c -o $$@ $$(realpath $$<)
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### Rule (compile): a single `.S` -> `.S.o` (gcc, which preprocesses and calls as)
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$$(filter %.S.o, $$($(1)OBJS)): $$(DST_DIR)/%.S.o: %.S
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@mkdir -p $$(dir $$@) && echo + AS $$<
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@$$(AS) $$($(1)ASFLAGS) -c -o $$@ $$(realpath $$<)
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### Rule (`#include` dependencies): paste in `.d` files generated by gcc on `-MMD`
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-include $$(addprefix $$(DST_DIR)/, $$(addsuffix .d, $$(filter %.c %.cc, $$(AM_SRCS))))
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endef
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# Usage:
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# $(1): Library name
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# $(2): Library variable prefix
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# E.g:
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# $(eval $(call ADD_LIBRARY,am-riscv,AM_))
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define ADD_LIBRARY
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$(eval $(call COMPILE_RULES,$(2)))
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$(1): $$($(2)OBJS)
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@mkdir -p $$(dir $$@)
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@echo + AR "->" $$(patsubst $$(CURDIR)/%,%,$(1))
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@$$(AR) rcs $$@ $$($(2)OBJS)
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endef
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@ -1,8 +1,7 @@
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CROSS_COMPILE := riscv64-linux-gnu-
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COMMON_CFLAGS := -fno-pic -march=rv64g -mcmodel=medany -mstrict-align
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CFLAGS += $(COMMON_CFLAGS) -static
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ASFLAGS += $(COMMON_CFLAGS) -O0
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LDFLAGS += -melf64lriscv -O2
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AM_CFLAGS += -static -fno-pic -march=rv64g -mcmodel=medany -mstrict-align
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AM_ASFLAGS += -static -fno-pic -march=rv32g_zicsr -mcmodel=medany -O0
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AM_LDFLAGS += -melf64lriscv -O2
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# overwrite ARCH_H defined in $(AM_HOME)/Makefile
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ARCH_H := arch/riscv.h
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@ -1,21 +1,19 @@
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AM_SRCS := platform/nemu/trm.c \
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platform/nemu/ioe/ioe.c \
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platform/nemu/ioe/timer.c \
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platform/nemu/ioe/input.c \
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platform/nemu/ioe/gpu.c \
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platform/nemu/ioe/audio.c \
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platform/nemu/ioe/disk.c \
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platform/nemu/mpe.c
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AM_SRCS := am/src/platform/nemu/trm.c \
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am/src/platform/nemu/ioe/ioe.c \
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am/src/platform/nemu/ioe/timer.c \
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am/src/platform/nemu/ioe/input.c \
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am/src/platform/nemu/ioe/gpu.c \
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am/src/platform/nemu/ioe/audio.c \
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am/src/platform/nemu/ioe/disk.c \
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am/src/platform/nemu/mpe.c
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CFLAGS += -fdata-sections -ffunction-sections
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LDFLAGS += -T $(AM_HOME)/scripts/linker.ld \
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AM_CFLAGS += -fdata-sections -ffunction-sections
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AM_LDFLAGS += -T $(AM_HOME)/scripts/linker.ld \
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--defsym=_pmem_start=0x80000000 --defsym=_entry_offset=0x0
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LDFLAGS += --gc-sections -e _start
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NEMUFLAGS += -b
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#-l $(shell dirname $(IMAGE).elf)/nemu-log.txt
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AM_LDFLAGS += --gc-sections -e _start
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CFLAGS += -DMAINARGS=\"$(mainargs)\"
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CFLAGS += -I$(AM_HOME)/am/src/platform/nemu/include
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AM_CFLAGS += -DMAINARGS=\"$(mainargs)\"
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AM_INCPATH += $(AM_HOME)/am/src/platform/nemu/include
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.PHONY: $(AM_HOME)/am/src/platform/nemu/trm.c
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image: $(IMAGE).elf
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@ -23,6 +21,9 @@ image: $(IMAGE).elf
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@echo + OBJCOPY "->" $(IMAGE_REL).bin
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@$(OBJCOPY) -S --set-section-flags .bss=alloc,contents -O binary $(IMAGE).elf $(IMAGE).bin
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NEMUFLAGS += -b
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#-l $(shell dirname $(IMAGE).elf)/nemu-log.txt
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run: image
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$(MAKE) -C $(NEMU_HOME) ISA=$(ISA) run ARGS="$(NEMUFLAGS)" IMG=$(IMAGE).bin
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@ -1,10 +1,9 @@
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include $(AM_HOME)/scripts/isa/riscv.mk
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include $(AM_HOME)/scripts/platform/nemu.mk
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CFLAGS += -DISA_H=\"riscv/riscv.h\"
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COMMON_CFLAGS += -march=rv32im_zicsr -mabi=ilp32 # overwrite
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LDFLAGS += -melf32lriscv # overwrite
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AM_CFLAGS += -DISA_H=\"riscv/riscv.h\" -march=rv32im_zicsr -mabi=ilp32 # overwrite
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AM_LDFLAGS += -melf32lriscv # overwrite
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AM_SRCS += riscv/nemu/start.S \
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riscv/nemu/cte.c \
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riscv/nemu/trap.S \
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riscv/nemu/vme.c
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AM_SRCS += am/src/riscv/nemu/start.S \
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am/src/riscv/nemu/cte.c \
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am/src/riscv/nemu/trap.S \
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am/src/riscv/nemu/vme.c
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