AIX Kernel Extension

I have searching everywhere but it seemed that it i开发者_运维问答s not possible to compile AIX kernel module using opensource compilers like GCC. So is purchasing (or getting the trial license) the XLC compiler from IBM really necessary?

Thanks.

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Is there anything that says GCC can't be used? http://www.ibm.com/developerworks/aix/library/au-kernelext.html doesn't say anything about a specific compiler, other than that you can't use the compiler to link (ld is a system command, though, not part of XLC).