[Haskell-cafe] OSX, ghci, dylib, what is the correct way?
allbery.b at gmail.com
Sun Jun 12 20:45:26 CEST 2011
On Sun, Jun 12, 2011 at 14:31, Jason Dagit <dagitj at gmail.com> wrote:
> If I build the C library as a .a, then ghci comlains that it cannot
> open the .dylib. My first question is: Why does ghci need a .dylib
> and does it really use it?
Static libraries are... static. ghci would have to rebuild itself
against the static archive to use it; that's how static archives work.
Dynamic libraries are dynamic because they can be loaded at runtime
instead of compile time.
> When I build a dylib I get a [segfault when loading the code into ghci].
I believe ghci still uses its own dynamic loader instead of the
standard library one, and as such it doesn't handle everything quite
correctly; Mach-O is a moving target and Apple doesn't always document
its changes. When you compile, the system linker is used to build
the executable and things work properly.
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