When compiling a SH2A kernel (e.g. se7206_defconfig or rsk7203_defconfig)
using sh4-linux-gcc, linking fails with:
net/built-in.o: In function `__sk_run_filter':
net/core/filter.c:566: undefined reference to `__fpscr_values'
net/core/filter.c:269: undefined reference to `__fpscr_values'
net/core/filter.c:269: undefined reference to `__fpscr_values'
net/core/filter.c:269: undefined reference to `__fpscr_values'
net/core/filter.c:269: undefined reference to `__fpscr_values'
net/built-in.o:net/core/filter.c:580: more undefined references to
`__fpscr_values' follow
This happens because sh4-linux-gcc doesn't support the "-m2a-nofpu", which
is thus filtered out by "$(call cc-option, ...)".
As compiling using sh4-linux-gcc is useful for compile coverage, also try
passing "-m4-nofpu" (which is presumably filtered out when using a real
sh2a-linux toolchain) to disable the generation of FPU instructions and
references to __fpscr_values[].
Signed-off-by: Geert Uytterhoeven <geert+rene...@glider.be>
---
arch/sh/Makefile | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/sh/Makefile b/arch/sh/Makefile
index d4d16e4be07c..bf5b3f5f4962 100644
--- a/arch/sh/Makefile
+++ b/arch/sh/Makefile
@@ -32,7 +32,8 @@ endif
cflags-$(CONFIG_CPU_SH2) := $(call cc-option,-m2,)
cflags-$(CONFIG_CPU_SH2A) += $(call cc-option,-m2a,) \
- $(call cc-option,-m2a-nofpu,)
+ $(call cc-option,-m2a-nofpu,) \
+ $(call cc-option,-m4-nofpu,)
cflags-$(CONFIG_CPU_SH3) := $(call cc-option,-m3,)
cflags-$(CONFIG_CPU_SH4) := $(call cc-option,-m4,) \
$(call cc-option,-mno-implicit-fp,-m4-nofpu)
--
1.9.1
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