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# -*- makefile -*-
SHELL = /bin/sh
VPATH = $(SRCDIR)
# Binary utilities.
# If the host appears to be x86, use the normal tools.
# If it's x86-64, use the compiler and linker in 32-bit mode.
# Otherwise assume cross-tools are installed as i386-elf-*.
X86 = i.86\|pentium.*\|[pk][56]\|nexgen\|viac3\|6x86\|athlon.*\|i86pc
X86_64 = x86_64
ifneq (0, $(shell expr `uname -m` : '$(X86)'))
CC = gcc
LD = ld
OBJCOPY = objcopy
else
ifneq (0, $(shell expr `uname -m` : '$(X86_64)'))
CC = gcc -m32
LD = ld -melf_i386
OBJCOPY = objcopy
else
CC = i386-elf-gcc
LD = i386-elf-ld
OBJCOPY = i386-elf-objcopy
endif
endif
ifeq ($(strip $(shell command -v $(CC) 2> /dev/null)),)
$(warning *** Compiler ($(CC)) not found. Did you set $$PATH properly? Please refer to the Getting Started section in the documentation for details. ***)
endif
# filst04@liu 2014-01: added to support some Linux distributions
# klaar36@ida 2014-01: which architecture, compiler and system
# combinations need this?
ifneq (0, $(shell expr `uname -s` : 'Linux'))
# not supported by SunOS cross compiler
CFLAG_STACK_PROTECTOR = -fno-stack-protector
LDFLAG_BUILD_ID = -Wl,--build-id=none
else
CFLAG_STACK_PROTECTOR =
LDFLAG_BUILD_ID =
endif
# Compiler and assembler invocation.
DEFINES = -DPINTOS
WARNINGS = -Wall -W -Wstrict-prototypes -Wmissing-prototypes -Wsystem-headers
# klaar36@ida 2015-03: -fno-omit-frame-pointer to get working backtrace
# klaar36@ida 2016-05: -ffreestanding to assert freestanding environment
# klaar36@ida 2016-05: -fno-inline to ease debugging
CFLAGS = -std=gnu99 -ggdb -msoft-float -fno-omit-frame-pointer -ffreestanding -fno-inline -O $(CFLAG_STACK_PROTECTOR)
CPPFLAGS = -nostdinc -I$(SRCDIR) -I$(SRCDIR)/lib
ASFLAGS = -Wa,--gstabs
LDFLAGS =
DEPS = -MMD -MF $(@:.o=.d)
%.o: %.c
$(CC) -c $< -o $@ $(CFLAGS) $(CPPFLAGS) $(WARNINGS) $(DEFINES) $(DEPS)
%.o: %.S
$(CC) -c $< -o $@ $(ASFLAGS) $(CPPFLAGS) $(DEFINES) $(DEPS)
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