failed fsharp build

frawat01@e106946-lin:/work/innovation/fsharp$ ./autogen.sh --prefix=/usr
checking whether make sets $(MAKE)... yes
checking for pkg-config... /usr/bin/pkg-config
checking for mono-sgen... /usr/bin/mono-sgen
configure: creating ./config.status
config.status: creating launcher
config.status: creating Makefile
config.status: creating config.make
config.status: creating src/fsharp/Makefile
config.status: creating src/fsharp/FSharp.Build-proto/Makefile
config.status: creating src/fsharp/FSharp.Compiler-proto/Makefile
config.status: creating src/fsharp/Fsc-proto/Makefile
config.status: creating src/fsharp/FSharp.Core/Makefile
config.status: creating src/fsharp/FSharp.Build/Makefile
config.status: creating src/fsharp/FSharp.Compiler/Makefile
config.status: creating src/fsharp/Fsc/Makefile
config.status: creating src/fsharp/FSharp.Compiler.Interactive.Settings/Makefile
config.status: creating src/fsharp/FSharp.Compiler.Server.Shared/Makefile
config.status: creating src/fsharp/FSharp.Data.TypeProviders/Makefile
config.status: creating src/fsharp/fsi/Makefile
config.status: creating src/fsharp/fsiAnyCpu/Makefile
config.status: creating src/fsharp/policy.2.0.FSharp.Core/Makefile
config.status: creating src/fsharp/policy.2.3.FSharp.Core/Makefile
config.status: creating src/fsharp/policy.3.3.FSharp.Core/Makefile
config.status: creating src/fsharp/policy.4.0.FSharp.Core/Makefile
config.status: creating src/fsharp/policy.4.3.FSharp.Core/Makefile
frawat01@e106946-lin:/work/innovation/fsharp$ make
make -C src/fsharp all
make[1]: Entering directory `/work/innovation/fsharp/src/fsharp'
make build-proto
make[2]: Entering directory `/work/innovation/fsharp/src/fsharp'
mkdir: cannot create directory `/work/innovation/fsharp//lib/proto/': File exists
make[2]: [build-proto] Error 1 (ignored)
cp -p /work/innovation/fsharp/lib/bootstrap/4.0/FSharp.Core.dll /work/innovation/fsharp//lib/proto/FSharp.Core.dll
cp -p /work/innovation/fsharp/lib/bootstrap/4.0/FSharp.Core.sigdata /work/innovation/fsharp//lib/proto/FSharp.Core.sigdata
cp -p /work/innovation/fsharp/lib/bootstrap/4.0/FSharp.Core.optdata /work/innovation/fsharp//lib/proto/FSharp.Core.optdata
make -C FSharp.Build-proto Configuration=proto build-proto
make[3]: Entering directory `/work/innovation/fsharp/src/fsharp/FSharp.Build-proto'
MONO_ENV_OPTIONS=--gc=sgen xbuild /p:Configuration=Proto
XBuild Engine Version 12.0
Mono, Version 3.2.8.0
Copyright (C) 2005-2013 Various Mono authors

Build started 04/03/2014 08:28:18.
__________________________________________________
Project "/work/innovation/fsharp/src/fsharp/FSharp.Build-proto/FSharp.Build-proto.fsproj" (default target(s)):
        Target CallFsSrGen:
        Skipping target "CallFsSrGen" because its outputs are up-to-date.
        Target PrepareForBuild:
                Configuration: Proto Platform: AnyCPU
        Target ResolveAssemblyReferences:
: error : Error initializing task ResolveAssemblyReference: Exception has been thrown by the target of an invocation.
        Task "ResolveAssemblyReference" execution -- FAILED
        Done building target "ResolveAssemblyReferences" in project "/work/innovation/fsharp/src/fsharp/FSharp.Build-proto/FSharp.Build-proto.fsproj".-- FAILED
Done building project "/work/innovation/fsharp/src/fsharp/FSharp.Build-proto/FSharp.Build-proto.fsproj".-- FAILED

Build FAILED.
Errors:

/work/innovation/fsharp/src/fsharp/FSharp.Build-proto/FSharp.Build-proto.fsproj (default targets) ->
/usr/lib/mono/4.5/Microsoft.Common.targets (ResolveAssemblyReferences target) ->

        : error : Error initializing task ResolveAssemblyReference: Exception has been thrown by the target of an invocation.

         0 Warning(s)
         1 Error(s)

Time Elapsed 00:00:00.1839870
make[3]: *** [build-proto] Error 1
make[3]: Leaving directory `/work/innovation/fsharp/src/fsharp/FSharp.Build-proto'
make[2]: *** [build-proto] Error 2
make[2]: Leaving directory `/work/innovation/fsharp/src/fsharp'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/work/innovation/fsharp/src/fsharp'
make: *** [all] Error 2