[MonoDevelop] Unable to build monodevelop after upgrade to Ubuntu 12.04

[Matt Calder]

I upgraded to Ubuntu 12.04 and now cannot build monodevelop from source. I
get the following error when I invoke make:

calder at pharos:~/tmp/monodevelop$ make
git submodule update --init --recursive
Submodule 'main/external/cecil' () registered for path 'main/external/cecil'
Submodule 'main/external/maccore' () registered for path
'main/external/maccore'
Submodule 'main/external/mdtestharness' () registered for path
'main/external/mdtestharness'
Submodule 'main/external/mono-tools' () registered for path
'main/external/mono-tools'
Submodule 'main/external/monomac' () registered for path
'main/external/monomac'
Submodule 'main/external/ngit' () registered for path 'main/external/ngit'
make[1]: Entering directory `/home/calder/tmp/monodevelop/main'
Making all in external
make[2]: Entering directory `/home/calder/tmp/monodevelop/main/external'
mkdir -p ../build/bin
xbuild ngit/ngit.sln /t:NGit
MSBUILD: error MSBUILD0001: Unknown switch: ngit/ngit.sln
make[2]: *** [all] Error 1
make[2]: Leaving directory `/home/calder/tmp/monodevelop/main/external'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/calder/tmp/monodevelop/main'
make: *** [all-recursive] Error 1


Here are my system details:

calder at pharos:~/tmp/monodevelop$ mono --version
Mono JIT compiler version 2.11.2 (master/a7e01ca Tue Jun 19 17:22:44 EDT
2012)
Copyright (C) 2002-2012 Novell, Inc, Xamarin Inc and Contributors.
www.mono-project.com
    TLS:           __thread
    SIGSEGV:       altstack
    Notifications: epoll
    Architecture:  amd64
    Disabled:      none
    Misc:          softdebug
    LLVM:          supported, not enabled.
    GC:            Included Boehm (with typed GC and Parallel Mark)
calder at pharos:~/tmp/monodevelop$ uname -a
Linux pharos 3.2.0-25-generic #40-Ubuntu SMP Wed May 23 20:30:51 UTC 2012
x86_64 x86_64 x86_64 GNU/Linux
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