Cobra Forums

For those of you on Mac, Linux, etc. you can do this:

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$ mono --version
Mono JIT compiler version 2.10.2 (tarball Mon Apr 18 09:14:01 MDT 2011)

$ dmcs
error CS2008: No files to compile were specified

$ cd CobraWorkspace

$ svn up

$ cd Source

$ sudo ./bin/install-from-workspace -native-compiler:`which dmcs`


Note that the install-from-workspace script has a "Clean up workspace" task at the end that rebuilds the compiler in your workspace with debugging symbols, but fails to pass the extra args on (-native-compiler).

If you don't want to install, or if you want to get your workspace on .NET 4.0 after an install:

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$ ./bin/build -native-compiler:`which dmcs`

$  monodis --assemblyref cobra.exe
AssemblyRef Table
1: Version=4.0.0.0
   Name=mscorlib
   Flags=0x00000000
   Public Key:
0x00000000: B7 7A 5C 56 19 34 E0 89
2: Version=4.0.0.0
   Name=System
   Flags=0x00000000
   Public Key:
0x00000000: B7 7A 5C 56 19 34 E0 89

$ cobra -d -bsl

$ monodis --assemblyref Cobra.Lang.dll
# reports ... 4.0.0.0 ...

$ cobra hello
Hello, world.

$ monodis --assemblyref hello.exe
# reports ... 4.0.0.0 ...

# if you want to build Cobra.Lang.Compiler.dll:
$ ./bin/build-compiler-lib -v -native-compiler:`which dmcs`


This needs more testing. If you have questions or problems, speak up.

I'll work on Windows soon.

For your reference:
* http://stackoverflow.com/questions/2673234/net-4-0-new-methods-in-existing-classes
* What's New in the .NET Framework 4

I received this exception for one of my programs:

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Unhandled Exception: System.MissingMethodException: Method not found: 'System.Reflection.Assembly.op_Equality'.
  at Cobra.Lang.Test.TestRunner.RunAllTests () [0x00000] in <filename unknown>:0
  at Cobra.Lang.CobraCore.RunAllTests () [0x00000] in <filename unknown>:0
  at CommandLine.Main () [0x00000] in <filename unknown>:0


I noticed the -compile-if-needed/-cin flag was being used. After removing the .exe, the error went away.

I failed to mention that you'll probably want to include the -turbo option which turns off certain run-time checks and will therefore speed up the compiler and the standard library. So the command would be:

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sudo ./bin/install-from-workspace -native-compiler:`which dmcs` -turbo


hey charles

what do you think of the 4) method described in this http://cobra-language.com/forums/viewtopic.php?f=4&t=766#p4011 to Make .net 4.0 compatible
using ILDASM and ILASM
i just tested it with Winform example from howtos and then disassembled the assembly/.exe produced
it indeed used .net 4.0 System.Windows.Forms and .net 4.0`s mscorlib
seems to work

Thanking_You
RIGHT_THEN

I think the method 4) is fine. Thanks for sharing it. In particular, it is good to know that even if we didn't have a textual C# back-end, we could still bump up the CLR version using that technique.

I have added a -net4 option to the installer which makes this much easier. I've tested it on Windows+.NET and Mac+Mono. I'll post separately about it as well.