Building GCC-6.3.0 cross compiler for e6500 (T4240 RDB)

[naishabkp]

I have built a cross compiler (GCC-6.3.0) for T4240 RDB. Using this compiler i built root file system and my application. I found that Application crashes with SIGILL. I traced it to instruction 'fsqrt' in gnu math library (sqrt,cabs) libm.so.6.

e6500 programming data sheet says many such instructions are not implemented in this architecture. Freescale SDK-2.0 has so many patches to work around this problem, but they are all for GCC-4.9.2. Are there any such patches available for GCC6 or at least GCC5?

[Pavel]

Usually new version of the SDK contains new GCC. The SDK 2.0 and updates 1605 - 1701 use gcc-4.9.2.

Look at the poky-ref-manual for gcc changing. See the following pages:

http://www.yoctoproject.org/docs/1.6/poky-ref-manual/poky-ref-manual.html

or

http://www.yoctoproject.org/docs/2.1/ref-manual/ref-manual.html#moving-to-the-yocto-project-2.0-rele...

Have a great day,
Pavel Chubakov

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