On 2/10/2010 5:33 PM, Chaz Chandler wrote: > >>> I suspect what we should do here is either drop ukernel from the IRIX >>> build entirely, or write a configure test for label support that we >>> can use in all of these situations when we're building in user mode. >>> >> How prevalent is a lack of support for structure labels? If we are sure >> this limitation is only on a few specific platforms, this needn't be a >> configure test (instead just somewhere appropriately #define >> AFS_LABEL_ENV or something). Though a configure test is more correct, >> I'd hate to slow the build for something that exists almost everywhere. >> > > I'm not sure how prevalent the lack of support is elsewhere, but I can > say that the reason we have both __c99 and AFS_SGI_ENV in that ifdef is > that the c99 compiler on irix does support labels.
Is the existence of the __c99 preprocessor symbol a requirement of C99 compliant compilers? If so, we can simply conditionality use structure labels when __c99 is defined.
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