"has no symbols"/"same member name" warnings using libtool

Edward Z. Yang ezyang at MIT.EDU
Sat Sep 14 07:12:16 UTC 2013

Hey Luke,

Please file a bug.  Add static001 as a failing test case which is
producing these errors.


Excerpts from Luke Iannini's message of Thu Sep 05 18:40:14 -0700 2013:
> Hi all,
> I'm trying to track down the last warnings in GHC iOS.
> We get this waterfall of warnings like:
> warning same member name (Types.o) in output file used for input files:
> /usr/local/ghc-ios-sim/lib/i386-apple-darwin11-ghc-7.7.20130828/base-
> and:
> /usr/local/ghc-ios-sim/lib/i386-apple-darwin11-ghc-7.7.20130828/base-
> due to use of basename, truncation and blank padding
> and
> file:
> /usr/local/ghc-ios-sim/lib/i386-apple-darwin11-ghc-7.7.20130828/base-
> has no symbols
> when we run libtool to create the static libraries, and I was wondering if
> anyone had any ideas what causes them so I could start debugging... I can't
> seem to find much information about the warning.
> Here's the output of
> i386-apple-darwin11-ghc -staticlib test.'s
> where test.hs is simply: main = print "hello world"
> https://gist.github.com/lukexi/25bfb42616933b0f1542
> and here's the same with -v3
> https://gist.github.com/lukexi/c1fbbe32cef9e3965a72
> I suppose I can simply suppress the output of libtool when we call it from
> GHC, but I'd love to find the root cause if we can.
> Thanks for any hints!
> Cheers
> Luke

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