__extendsfdf2

[Aurélien Buhrig]

Hi,

I’m porting gcc for a 16-bit target with no hardware fp capabilities.
Playing with floats/doubles, gcc complains about an undefined reference to
__extendsfdf2.
This function should be defined in libgcc.a from fp-bit.c. Looking a bit
deeper, I found that _sf_to_df.o obj file where __extendsfdf2 should be
defined has an is empty text section
 

So I guess this is a matter of Macro definition which inhibits this code.

In my t-target, the only macro definitions are
#define FLOAT
#define CMPtype HItype 
#define SMALL_MACHINE

And the xgcc command line is :
xgcc –B
 -nostdinc -isystem 
 -L
  -I
  -DIN_GCC
-DCROSS_DIRECTORY_STRUCTURE  -Os -Dinhibit_libc -fno-inline -g  -DIN_LIBGCC2
-D__GCC_FLOAT_NOT_NEEDED -Dinhibit_libc  -DHAVE_CC_TLS -o _sf_to_df.o -MT
_sf_to_df.o -MD -MP -MF _sf_to_df.dep -DFINE_GRAINED_LIBRARIES -DL_sf_to_df
-c ../.././gcc/fp-bit.c

Any hint?

Aurelien
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