[eigen] Compiling errors in Nuttx environment

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Hello all and thank you for accepting me in the mailing-list.

I have some issues that I would like to be resolved. I'm using the latest 3.2..90 version of Eigen in a Autopilot project called PX4, which uses a Nuttx RTOS in an ARM-based uC. Compiling one of the available builds, which uses an Eigen testing code, I get the following error: http://pastebin.com/7cb2rLsW.

Somehow it seems that there is some kind of incompatibility between the macros on NEWLIB and Eigen. I also suspect that numext:: may causing a conflict, because if I remove this before, for example, isfinite(), is able to get through. But then, another problem appears: http://pastebin.com/bnxwa5uk. For this one, I can't seem to find the solution.

The compilation toolchain and flag config is as the following: http://pastebin.com/nUJK2aQB.

Thanks in advance!

Best regards,

Nuno Marques
Tenente Aluno de Transmissões (Eng)

+351 912 090 991
Azambuja | Portugal

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