28 lines
1.3 KiB
Diff
28 lines
1.3 KiB
Diff
Since gcc 9.1, adding `-mcall-aixdesc` to cflags makes it no longer define
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`__linux__`, which breaks compilation of the kernel in places where the macro
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is checked (which is multiple). This behavior is actually more correct than
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it was before, as `-mcall-aixdesc` is only meant to be used when compiling
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for AIX.
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However, it is not enough to just drop it and use `-mabi=elfv1`, as that
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results in a ton of undefined references all over the place when linking.
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So work around it until upstream sorts it out.
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--- a/arch/powerpc/Makefile
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+++ b/arch/powerpc/Makefile
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@@ -96,6 +96,7 @@ endif
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ifdef CONFIG_PPC64
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cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mabi=elfv1)
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cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mcall-aixdesc)
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+cflags-$(CONFIG_CPU_BIG_ENDIAN) += -D__linux__
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aflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mabi=elfv1)
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aflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mabi=elfv2
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endif
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@@ -151,6 +152,7 @@ AFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2)
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else
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CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv1)
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CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcall-aixdesc)
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+CFLAGS-$(CONFIG_PPC64) += -D__linux__
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AFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv1)
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endif
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CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcmodel=medium,$(call cc-option,-mminimal-toc))
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