Am 18.11.2010 11:12, schrieb Simon Marlow:
On 17/11/2010 14:34, Christian Maeder wrote:
ghc can be built without and with libffi.
Which build option are you referring to here?
I did not use any explicit build option, but just created a binary-distribution from sources without having /usr/lib/libffi.
libffi is required for FFI support in GHCi, and for FFI "wrapper" imports. However on x86 and x86_64 we don't normally use libffi for wrappers, because we have a native implementation that is a bit faster (this is the UseLibFFIForAdjustors build option).
What advantage do I gain in the latter case? The packages that come with ghc (displayed by "ghc-pkg dump") don't use it.
The RTS should depend on it.
"ghc-pkg describe rts" only lists: extra-libraries: m rt dl also for the official ghc-7.0.1-i386-unknown-linux.tar.bz2 that is linked against libffi (I hope not, unnecessarily). Does this mean that GHCi is based on a different RTS? C.
Cheers, Simon
Thanks Christian
Am 16.11.2010 13:03, schrieb Christian Maeder:
http://new-www.haskell.org/ghc/dist/7.0.1/ghc-7.0.1-i386-unknown-linux.tar.b...
./configure failed with:
checking for path to top of build tree... utils/ghc-pwd/ghc-pwd: error while loading shared libraries: libffi.so.5: cannot open shared object file: No such file or directory configure: error: cannot determine current directory
ldd utils/ghc-pwd/ghc-pwd linux-gate.so.1 => (0xffffe000) libutil.so.1 => /lib/libutil.so.1 (0xb7718000) libdl.so.2 => /lib/libdl.so.2 (0xb7713000) libm.so.6 => /lib/libm.so.6 (0xb76e9000) libffi.so.5 => not found libgmp.so.3 => /usr/lib/libgmp.so.3 (0xb7693000) librt.so.1 => /lib/librt.so.1 (0xb7689000) libc.so.6 => /lib/libc.so.6 (0xb751e000) /lib/ld-linux.so.2 (0xb7745000) libpthread.so.0 => /lib/libpthread.so.0 (0xb7503000)
The 64Bit version works, though.
Christian
Am 16.11.2010 01:09, schrieb Ian Lynagh:
How to get it ~~~~~~~~~~~~~
The easy way is to go to the web page, which should be self-explanatory:
Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users