mirror of https://github.com/FDOS/kernel.git
85 lines
2.5 KiB
Makefile
85 lines
2.5 KiB
Makefile
#
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# GCC.MAK - kernel compiler options for ia16-elf-gcc
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#
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#**********************************************************************
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#* TARGET : we create a %TARGET%.sys file
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#* TARGETOPT : options, handled down to the compiler
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#**********************************************************************
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TARGET=KGC$(XCPU)$(XFAT)
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TARGETOPT=-march=i8086
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ifeq ($(XCPU),186)
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TARGETOPT=march=i80186
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ALLCFLAGS+=-DI186
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endif
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ifeq ($(XCPU),386)
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TARGETOPT=-march=i80286
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ALLCFLAGS+=-DI386
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endif
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ifeq ($(XFAT),32)
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ALLCFLAGS+=-DWITHFAT32
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NASMFLAGS+=-DWITHFAT32
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endif
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NASM=$(XNASM)
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NASMFLAGS+=-i../hdr/ -DXCPU=$(XCPU) -felf
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CC=ia16-elf-gcc -c
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CL=ia16-elf-gcc
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INCLUDEPATH=.
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LIBUTIL=ar crs
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LIBPLUS=
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LIBTERM=
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TINY=-mcmodel=tiny
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CFLAGST=-Os -fno-strict-aliasing -fpack-struct -fcall-used-es -Wno-pointer-to-int-cast -Wno-pragmas -Wno-array-bounds -Werror -o $@
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CFLAGSC=
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#
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# heavy stuff - building
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#
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# -mcmodel=small small memory model (small code/small data)
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# -Os -> favor code size over execution time in optimizations
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# -fno-strict-aliasing don't assume strict aliasing rules
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# -fleading-underscore underscores leading field for DOS compiler compat
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# -fno-common no "common" variables, just BSS for uninitialized data
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# -fpack-struct pack structure members
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# -ffreestanding don't assume any headers
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# -fcall-used-es es clobbered in function calls
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# -mrtd use stdcall calling convention
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# -Wno-pointer-to-int-cast do not warn about FP_OFF
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# -Wno-pragmas do not warn about #pragma pack
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# -Werror treat all warnings as errors
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# -mfar-function-if-far-return-type treat `int __far f ();' as a far function
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ALLCFLAGS+=-I../hdr $(TARGETOPT) -mcmodel=small -fleading-underscore -fno-common -fpack-struct -ffreestanding -fcall-used-es -mrtd -Wno-pointer-to-int-cast -Wno-pragmas -Werror -Os -fno-strict-aliasing -mfar-function-if-far-return-type
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INITCFLAGS=$(ALLCFLAGS) -o $@
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CFLAGS=$(ALLCFLAGS) -o $@
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DIRSEP=/
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RM=rm -f
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CP=cp
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ECHOTO=echo>>
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ifeq ($(LOADSEG)0, 0)
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LOADSEG=0x60
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endif
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INITPATCH=ia16-elf-objcopy --redefine-sym ___umodsi3=_init_umodsi3 --redefine-sym ___udivsi3=_init_udivsi3 --redefine-sym ___ashlsi3=_init_ashlsi3 --redefine-sym ___lshrsi3=_init_lshrsi3
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CLDEF=1
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CLT=gcc -DDOSC_TIME_H -I../hdr -o $@
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CLC=$(CLT)
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LINK=$(XLINK) -Tkernel.ld -Wl,-Map,kernel.map -o kernel.exe $(OBJS) -Wl,--whole-archive ../drivers/device.lib -Wl,--no-whole-archive \#
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.SUFFIXES: .obj .asm
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# *Implicit Rules*
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.asm.obj :
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$(NASM) -D$(COMPILER) $(NASMFLAGS) -o $@ $<
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.c.obj :
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$(CC) $(CFLAGS) $*.c
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