id,summary,reporter,owner,description,type,status,priority,milestone,component,version,resolution,keywords,cc,os,architecture,failure,difficulty,testcase,blockedby,blocking,related
6154,ghc-7.4.2 rc1: ./configure fails on raspberry pi (archlinux) with error: undefined reference to symbol 'sem_post@@GLIBC_2.4',paulkoer,,"Dear all,

Trying to compile the release candidate for ghc-7.4.2 on a raspberry pi running archlinux I get the following error when calling `./configure`:

/usr/bin/ld: /usr/lib/ghc-6.12.3/unix-2.4.0.2/libHSunix-2.4.0.2.a(Semaphore.o): undefined reference to symbol 'sem_post@@GLIBC_2.4'

I have attached the full output of ./configure and config.log

The raspberry pi has an ARM11 processor. A faq can be found here: http://www.raspberrypi.org/faqs

I believe ticket #3178 could be related, but the discussion there didn't help me. 

I hope reporting this here in this way is appropriate, otherwise please let me know, this is my first bug report for ghc.
",bug,closed,normal,,Build System,7.4.2-rc1,invalid,,,Linux,arm,Building GHC failed,Unknown,,,,