csharpcomp: cscc writes to srcdir?

[Simon Josefsson]

I'm not sure why I've been starting to see this now, it has worked
fine since the module was added, perhaps the C# compiler changed
during some upgrade.  Anyway, with 'make distcheck' I get:

checking for preferred C# implementation... any
...
checking for C# compiler... cscc

Making all in csharp
make[3]: Entering directory 
`/home/jas/self/src/libidn/libidn-0.6.4/_build/csharp'
/bin/sh ../csharpcomp.sh  -o Libidn.dll \
                `for src in AssemblyInfo.cs IDNA.cs RFC3454.cs 
CombiningClass.cs IDNAException.cs Stringprep.cs Composition.cs NFKC.cs 
StringprepException.cs DecompositionKeys.cs Punycode.cs 
DecompositionMappings.cs PunycodeException.cs; do echo ../../csharp/$src; done`
../../csharp/AssemblyInfo.objtmp: Permission denied
make[3]: *** [Libidn.dll] Error 1
make[3]: Leaving directory 
`/home/jas/self/src/libidn/libidn-0.6.4/_build/csharp'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/home/jas/self/src/libidn/libidn-0.6.4/_build'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/home/jas/self/src/libidn/libidn-0.6.4/_build'
make: *** [distcheck] Error 2
address@hidden:~/src/libidn$

Since csharpcomp.sh just invoke cscc, maybe it is a problem with it?
It shouldn't write to srcdir, IMHO.

The script reduces to invoking cscc -shared -o Libidn.dll
../../csharp/AssemblyInfo.cs ..., as in:

address@hidden:~/src/libidn/libidn-0.6.4/_build/csharp$ cscc -shared -o 
Libidn.ddl .. /../csharp/AssemblyInfo.cs
../../csharp/AssemblyInfo.objtmp: Permission denied
address@hidden:~/src/libidn/libidn-0.6.4/_build/csharp$

Should csharpcomp copy the *.cs file before compilation, perhaps?

/Simon