diff options
Diffstat (limited to 'arch/sh/Makefile')
| -rw-r--r-- | arch/sh/Makefile | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/sh/Makefile b/arch/sh/Makefile index 1f409bf8180..3b2d8e23224 100644 --- a/arch/sh/Makefile +++ b/arch/sh/Makefile @@ -38,6 +38,22 @@ cflags-$(CONFIG_CPU_SH4A) += $(call cc-option,-m4a,) \ $(call cc-option,-m4a-nofpu,) cflags-$(CONFIG_CPU_SH5) := $(call cc-option,-m5-32media-nofpu,) +ifeq ($(cflags-y),) +# +# In the case where we are stuck with a compiler that has been uselessly +# restricted to a particular ISA, a favourite default of newer GCCs when +# extensive multilib targets are not provided, ensure we get the best fit +# regarding FP generation. This is necessary to avoid references to FP +# variants in libgcc where integer variants exist, which otherwise result +# in link errors. This is intentionally stupid (albeit many orders of +# magnitude less than GCC's default behaviour), as anything with a large +# number of multilib targets better have been built correctly for +# the target in mind. +# +cflags-y += $(shell $(CC) $(KBUILD_CFLAGS) -print-multi-lib | \ + grep nofpu | sed q | sed -e 's/^/-/;s/;.*$$//') +endif + cflags-$(CONFIG_CPU_BIG_ENDIAN) += -mb cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -ml |