git-annex/doc/bugs/Build_error_on_Linux.mdwn
2013-10-26 11:46:45 -04:00

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### Please describe the problem.
Building on Linux, with a particular combination of flags, failed due to missing `async`.
### What steps will reproduce the problem?
1. Configure with the following flag combination
cryptohash -quvi -feed tdfa -testsuite -android production -dns -xmpp -pairing -webapp -assistant dbus inotify -webdav s3
2. Attempt to build and you'll get an error on line 16 of `Utility/Batch.hs` because `Control.Concurrent.Async` isn't available.
### What version of git-annex are you using? On what operating system?
Version 4.20131024 on Linux
### Please provide any additional information below.
This is the patch I applied to `git-annex.cabal`:
CPP-Options: -DWITH_KQUEUE
C-Sources: Utility/libkqueue.c
+ if os(linux)
+ Build-Depends: async
+
if os(linux) && flag(Dbus)
Build-Depends: dbus (>= 0.10.3)
CPP-Options: -DWITH_DBUS
> Feel async is core enough it should depend on it unconditionally.
> [[done]] --[[Joey]]