GHC 7.0.4 on Lion

Luca Ciciriello luca_ciciriello at
Mon Jul 25 14:59:37 CEST 2011

Hi All.
I've installed on my Mac the new MacOS X 10.7 (Lion) with Xcode 4.1

Using ghc 7.0.4 (64-bit) on that system a get the following warnings in the linking phase:

Linking hslint ...
ld: warning: could not create compact unwind for _ffi_call_unix64: does not use RBP or RSP based frame
ld: warning: PIE disabled. Absolute addressing (perhaps -mdynamic-no-pic) not allowed in code signed PIE, but used in ___gmpn_modexact_1c_odd from /Library/Frameworks/GHC.framework/Versions/7.0.4-x86_64/usr/lib/ghc-7.0.4/integer-gmp- To fix this warning, don't compile with -mdynamic-no-pic or link with -Wl,-no_pie

Is this something to worrying about?

Thanks in advance for any answer.


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