# Common make definitions, customized for each platform
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# Cross-compiler jos toolchain
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#
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# This Makefile will automatically use the cross-compiler toolchain
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# installed as 'i386-jos-elf-*', if one exists. If the host tools ('gcc',
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# 'objdump', and so forth) compile for a 32-bit x86 ELF target, that will
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# be detected as well. If you have the right compiler toolchain installed
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# using a different name, set GCCPREFIX explicitly in conf/env.mk
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# try to infer the correct GCCPREFIX
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ifndef GCCPREFIX
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GCCPREFIX := $(shell if i386-jos-elf-objdump -i 2>&1 | grep '^elf32-i386$$' >/dev/null 2>&1; \
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then echo 'i386-jos-elf-'; \
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elif objdump -i 2>&1 | grep 'elf32-i386' >/dev/null 2>&1; \
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then echo ''; \
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else echo "***" 1>&2; \
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echo "*** Error: Couldn't find an i386-*-elf version of GCC/binutils." 1>&2; \
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echo "*** Is the directory with i386-jos-elf-gcc in your PATH?" 1>&2; \
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echo "*** If your i386-*-elf toolchain is installed with a command" 1>&2; \
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echo "*** prefix other than 'i386-jos-elf-', set your GCCPREFIX" 1>&2; \
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echo "*** environment variable to that prefix and run 'make' again." 1>&2; \
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echo "*** To turn off this error, run 'gmake GCCPREFIX= ...'." 1>&2; \
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echo "***" 1>&2; exit 1; fi)
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endif
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# Definitions required in all program directories to compile and link
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# C programs using gcc.
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DEBUG=y
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CC = g++
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# COMPILE.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c
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# LINK.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)
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# preprocessor options
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CPPFLAGS += $(INCLUDES) -std=c++11
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# compilation options
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CFLAGS += $(DEBUGFLAGS) -Wall -DLINUX -D_GNU_SOURCE $(EXTRA)
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# linked options
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LDFLAGS +=
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LDDIR += -L$(ROOT)/lib
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LDLIBS += $(RPATH) $(LDDIR) $(EXTRALIBS)
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INCLUDES += -I. -I./include -I$(ROOT)/include
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DEST=$(ROOT)/build
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# DEST=.
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ifeq ($(DEBUG),y)
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DEBUGFLAGS = -O -g # "-O" is needed to expand inlines
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else
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DEBUGFLAGS = -O2
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endif
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RANLIB=echo
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AR=ar
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AWK=awk
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NM := $(GCCPREFIX)nm
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# Common temp files to delete from each directory.
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TEMPFILES=core core.* *.o temp.* *.out *.a *.so *.sym
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