forked from Minki/linux
75e2f0a6b1
When building the kernel with "make EXTRA_CFLAGS=...", this overrides the "PARANOID" preprocessor macro defined in arch/x86/math-emu/Makefile, and we run into a build warning: arch/x86/math-emu/reg_compare.c: In function ‘compare_i_st_st’: arch/x86/math-emu/reg_compare.c:254:6: error: ‘f’ may be used uninitialized in this function [-Werror=maybe-uninitialized] This fixes the implementation to work correctly even without the PARANOID flag, and also fixes the Makefile to not use the EXTRA_CFLAGS variable but instead use the ccflags-y variable in the Makefile that is meant for this purpose. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Bill Metzenthen <billm@melbpc.org.au> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20170719125310.2487451-3-arnd@arndb.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
30 lines
786 B
Makefile
30 lines
786 B
Makefile
#
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# Makefile for wm-FPU-emu
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#
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#DEBUG = -DDEBUGGING
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DEBUG =
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PARANOID = -DPARANOID
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ccflags-y += $(PARANOID) $(DEBUG) -fno-builtin $(MATH_EMULATION)
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asflags-y += $(PARANOID)
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# From 'C' language sources:
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C_OBJS =fpu_entry.o errors.o \
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fpu_arith.o fpu_aux.o fpu_etc.o fpu_tags.o fpu_trig.o \
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load_store.o get_address.o \
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poly_atan.o poly_l2.o poly_2xm1.o poly_sin.o poly_tan.o \
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reg_add_sub.o reg_compare.o reg_constant.o reg_convert.o \
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reg_ld_str.o reg_divide.o reg_mul.o
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# From 80x86 assembler sources:
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A_OBJS =reg_u_add.o reg_u_div.o reg_u_mul.o reg_u_sub.o \
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div_small.o reg_norm.o reg_round.o \
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wm_shrx.o wm_sqrt.o \
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div_Xsig.o polynom_Xsig.o round_Xsig.o \
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shr_Xsig.o mul_Xsig.o
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obj-y =$(C_OBJS) $(A_OBJS)
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proto:
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cproto -e -DMAKING_PROTO *.c >fpu_proto.h
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