On 19 April 2005 11:33, Malcolm Wallace wrote:
I have a patch from Arthur Baars to build profiling libraries for GHC. I'm wondering how people think it should be integrated? Should we have a --prof option that JUST builds profiling libraries, or which builds both non profiling and profiling?
--with-prof sounds good, which would build (and install etc.) the prof way in addition to the normal way.
I agree.
In the future we might need more of these (eg. --with-smp), but since each one needs a different flag to GHC I don't think there's anything more general we can reasonably do.
I can envisage --with-tracing too, to build a Hat-enabled version of a package, which involves not only extra compiler flags but extra pre-processor and library dependencies too.
In general, do you think these flags should combine in a linear fashion (one of each 'way') or cross-product (all possible permutations)?
In GHC some combinations make sense, and others don't (eg. "unreg" doesn't mix with "smp", but "unreg" works with "prof"). A reasonable approach would be to build all combinations that make sense. (I'm just using "unreg" as an example, I don't think we need --with-unreg). Cheers, Simon