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# -*-Makefile-*-
#
# This is the main Makefile
# Target tools
CC=$(CROSS)gcc$(POSTFIX)
LD=$(CROSS)ld$(POSTFIX)
AS=$(CROSS)as
AR=$(CROSS)ar
NM=$(CROSS)nm
OBJCOPY=$(CROSS)objcopy
OBJDUMP=$(CROSS)objdump
SIZE=$(CROSS)size
LD_TEXT=0x0
NM += --synthetic
try = $(shell set -e; if ($(1)) >/dev/null 2>&1; \
then echo "$(2)"; \
else echo "$(3)"; fi )
try-cflag = $(call try,$(1) $(2) -x c -c /dev/null -o /dev/null,$(2))
# Base warnings
CWARNS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
-Werror-implicit-function-declaration -Wdeclaration-after-statement \
-Wno-pointer-sign -Wextra -Wno-sign-compare \
-Wmissing-prototypes -Wmissing-declarations \
-Wwrite-strings -Wcast-align \
-Winit-self \
-Wframe-larger-than=1024 \
-Werror -Wno-error=format
# Host tools and options
HOSTCC=gcc
HOSTEND=$(shell uname -m | sed -e 's/^i.*86$$/LITTLE/' -e 's/^x86.*/LITTLE/' -e 's/^ppc64le/LITTLE/' -e 's/^ppc.*/BIG/')
HOSTCFLAGS=-O1 $(CWARNS) -DHAVE_$(HOSTEND)_ENDIAN -MMD
HOSTCFLAGS += $(call try-cflag,$(HOSTCC),-std=gnu11)
HOSTCFLAGS += $(call try-cflag,$(HOSTCC),-Wjump-misses-init) \
$(call try-cflag,$(HOSTCC),-Wsuggest-attribute=const) \
$(call try-cflag,$(HOSTCC),-Wsuggest-attribute=noreturn) \
$(call try-cflag,$(HOSTCC),-Wstack-usage=1024)
VALGRIND=valgrind -q --show-reachable=yes --error-exitcode=99
# Target options
OPTS=-Os -ffunction-sections
DBG=-g
CPPFLAGS := -I$(SRC)/include -Iinclude -MMD -include $(SRC)/include/config.h
CPPFLAGS += -I$(SRC)/libfdt -I$(SRC)/libflash -I$(SRC)/libc/include -I$(SRC)
ifeq ($(PORE),1)
CPPFLAGS += -I$(SRC)/libpore -D__HAVE_LIBPORE__
endif
CPPFLAGS += -D__SKIBOOT__ -nostdinc
CPPFLAGS += -isystem $(shell $(CC) -print-file-name=include)
CPPFLAGS += -DBITS_PER_LONG=64 -DHAVE_BIG_ENDIAN
# We might want to remove our copy of stdint.h
# but that means uint64_t becomes an ulong instead of an ullong
# causing all our printf's to warn
CPPFLAGS += -ffreestanding
CFLAGS := -fno-strict-aliasing -fstack-protector-all -pie -mbig-endian -m64
CFLAGS += -Wl,--oformat,elf64-powerpc
CFLAGS += $(call try-cflag,$(CC),-mabi=elfv1)
CFLAGS += $(call try-cflag,$(CC),-std=gnu11)
ifeq ($(SKIBOOT_GCOV),1)
CFLAGS += -fprofile-arcs -ftest-coverage -DSKIBOOT_GCOV=1
endif
ifeq ($(STACK_CHECK),1)
CFLAGS += -fstack-protector-all -pg
CPPFLAGS += -DSTACK_CHECK_ENABLED
else
# XXX Add -fstack-protector-strong on gcc 4.9
CFLAGS += -fstack-protector
endif
CFLAGS += $(call try-cflag,$(CC),-Wjump-misses-init) \
$(call try-cflag,$(CC),-Wsuggest-attribute=const) \
$(call try-cflag,$(CC),-Wsuggest-attribute=noreturn) \
$(call try-cflag,$(CC),-Wstack-usage=1024)
CFLAGS += $(CWARNS) $(OPTS) $(DBG)
LDFLAGS := -m64 -static -nostdlib -pie
LDFLAGS += -Wl,-Ttext-segment,$(LD_TEXT) -Wl,-N -Wl,--build-id=none
LDFLAGS += -Wl,--no-multi-toc
LDFLAGS += -mbig-endian -Wl,--oformat,elf64-powerpc
LDRFLAGS=-melf64ppc
# Debug stuff
#LDFLAGS += -Wl,-v -Wl,-Map,foomap
AFLAGS := -D__ASSEMBLY__ -mbig-endian -m64
# Special tool flags:
# Do not use the floating point unit
CFLAGS += -msoft-float
# Do not use string instructions
CFLAGS += -mno-string
# do not use load/store multiple word instrcutions
CFLAGS += -mno-multiple
# do not use any automatic vector foo
# While it would be safe during boot, we don't save/restore across OPAL calls
CFLAGS += $(call try-cflag,$(CC),-mno-vsx) \
$(call try-cflag,$(CC),-mno-direct-move) \
$(call try-cflag,$(CC),-mno-altivec)
# Do not use load/store update. You REALLY do not want to use this!
# The async safety of the ABI stack depends on the atomicity
# of update on store.
#CFLAGS += -mno-update
ifneq ($(KERNEL),)
CPPFLAGS += -DBUILTIN_KERNEL="\"$(KERNEL)\""
endif
CHECK = sparse
CHECKFLAGS := $(CF)
.SECONDARY:
vpath %.c $(SRC)
vpath %.C $(SRC)
vpath %.S $(SRC)
default: all
include/asm-offsets.h: asm/asm-offsets.s
@mkdir -p include
$(call Q,GN, $(SRC)/make_offsets.sh $< >$@, $@)
TARGET = skiboot
include $(SRC)/asm/Makefile.inc
include $(SRC)/core/Makefile.inc
include $(SRC)/hw/Makefile.inc
include $(SRC)/platforms/Makefile.inc
include $(SRC)/libfdt/Makefile.inc
include $(SRC)/libflash/Makefile.inc
include $(SRC)/libpore/Makefile.inc
include $(SRC)/libc/Makefile.inc
include $(SRC)/ccan/Makefile.inc
include $(SRC)/$(DEVSRC)/Makefile.inc
# hack for travis-ci and coverity
gard:
(cd external/gard; make)
all: $(SUBDIRS) $(TARGET).lid $(TARGET).map extract-gcov
OBJS := $(ASM) $(CORE) $(HW) $(PLATFORMS) $(LIBFDT) $(LIBFLASH)
ifeq ($(PORE),1)
OBJS += $(LIBPORE)
endif
OBJS += $(LIBC) $(CCAN) $(DEVSRC_OBJ)
OBJS_NO_VER = $(OBJS)
ALL_OBJS = $(OBJS) version.o
ALL_OBJS_1 = $(ALL_OBJS) asm/dummy_map.o
ALL_OBJS_2 = $(ALL_OBJS) asm/real_map.o
$(TARGET).lid: $(TARGET).elf
$(call Q,OBJCOPY, $(OBJCOPY) -O binary -S $^ $@, $@)
$(TARGET).tmp.elf: $(ALL_OBJS_1) $(TARGET).lds $(KERNEL)
$(call Q,LD, $(CC) $(LDFLAGS) -T $(TARGET).lds $(ALL_OBJS_1) -o $@, $@)
asm/real_map.o : $(TARGET).tmp.map
$(TARGET).elf: $(ALL_OBJS_2) $(TARGET).lds $(KERNEL)
$(call Q,LD, $(CC) $(LDFLAGS) -T $(TARGET).lds $(ALL_OBJS_2) -o $@, $@)
$(SUBDIRS):
$(call Q,MKDIR,mkdir $@, $@)
-include $(wildcard *.d)
-include $(wildcard $(SUBDIRS:%=%/*.d))
# Set V=1 if you want to see everything.
include $(SRC)/Makefile.rules
VERSION ?= $(shell cd $(SRC); GIT_DIR=$(SRC)/.git $(SRC)/make_version.sh)
.PHONY: VERSION-always
.version: VERSION-always
@echo $(VERSION) > $@.tmp
@cmp -s $@ $@.tmp || cp $@.tmp $@
@rm -f $@.tmp
version.c: $(SRC)/make_version.sh $(OBJS_NO_VER) .version
@(if [ "a$(VERSION)" = "a" ]; then \
echo "#error You need to set SKIBOOT_VERSION environment variable" > $@ ;\
else \
echo "const char version[] = \"$(VERSION)\";" ;\
fi) > $@
.PHONY: coverage
include $(shell find $(SRC)/* -name Makefile.check)
extract-gcov: extract-gcov.c
$(call Q, HOSTCC ,$(HOSTCC) $(HOSTCFLAGS) \
-DTARGET__GNUC__=`echo '__GNUC__'|$(CC) -E -|grep -v '^#'` \
-DTARGET__GNUC_MINOR__=`echo '__GNUC__'|$(CC) -E -|grep -v '^#'` \
-O0 -g -I$(SRC) -o $@ $<,$<)
coverage-report: skiboot.info
genhtml --branch-coverage -q -o $@ $<
skiboot.info: coverage
lcov -q -c -d . $(LCOV_DIRS) -o $@ --rc lcov_branch_coverage=1
lcov -q -r $@ $(LCOV_EXCLUDE) -o $@ --rc lcov_branch_coverage=1
tags:
find . -name '*.[chS]' | xargs ctags
TAGS:
find . -name '*.[chS]' | xargs etags
.PHONY: tags TAGS check coverage
cscope:
find . -name '*.[chS]' | xargs cscope
clean:
$(RM) *.[odsa] $(SUBDIRS:%=%/*.[odsa])
$(RM) *.elf $(TARGET).lid *.map $(TARGET).lds
$(RM) include/asm-offsets.h version.c
distclean: clean
$(RM) *~ $(SUBDIRS:%=%/*~) include/*~
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