kbuild and -msoft-float
Probably off-topic for this list, but of presumed general interest for developers working on modules maintained/built outside the kernel source tree...
The Atmelwlandriver project on Sourceforge has recently modified the package build process for 2.6 kernels to be compatible with kbuild. Unfortunately, when the smoke of the build process clears, the pcmcia driver modules all contain several undefined symbols traceable to the use of "-msoft-float" during compilation. The undefined symbols are
__subdf3 __divdf3 __fixunsdfsi __floatsidf __gtdf2
I don't know if this is specific to 2.6.7, but the behavior is not dependent on the version of gcc for versions capable of building 2.6 kernels on i386 hardware. If the "-msoft-float" flag is omitted, everything builds and works as expected. The question is "why are floating point instructions being emitted in the first place?" The driver code contains nothing obvious that might cause this behavior, although I'm sure I'm missing *something*.
Explanations, workarounds, etc. gratefully accepted. Thanks in advance.
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