.net – How to force MSBuild to compile for 32-bit mode

32-bit64-bitmsbuildnetvb.net

I'm using MSBuild (via NAnt) to compile a bunch of VB.NET assemblies. Because these assemblies depend on COM Interop, I need to guarantee that they run in 32-bit mode on 64 bit OS's. I can get the executable assemblies to compile to 32-bit by changing the project in Visual Studio, but I'd really like to be able to force all of the executables to be compiled to 32 bit mode on the build server.

I've tried a number of command-line parameters to MSBuild with no luck:

/p:Platform=win32
/p:Platform=x86
/p:ProcessorArchitecture=x86

What am I doing wrong? Is there some reference to the properties that MSBuild uses when compiling VB projects?

Best Answer

According to MSDN, you're doing the right thing. Looks like /p:Platform=x86, but actually, maybe it's /p:PlatformTarget=x86.

Try to just invoke MSBuild directly with that parameter (make sure it's not an issue with your NAnt file. Look at the build output for the right build configuration (Debug / Release).

Related Solutions

.net – What does the Visual Studio “Any CPU” target mean

An AnyCPU assembly will JIT to 64-bit code when loaded into a 64-bit process and 32 bit when loaded into a 32-bit process.

By limiting the CPU you would be saying: There is something being used by the assembly (something likely unmanaged) that requires 32 bits or 64 bits.

Java – How to tell if I’m running in 64-bit JVM or 32-bit JVM (from within a program)

For certain versions of Java, you can check the bitness of the JVM from the command line with the flags -d32 and -d64.

$ java -help
...
    -d32          use a 32-bit data model if available
    -d64          use a 64-bit data model if available

To check for a 64-bit JVM, run:

$ java -d64 -version

If it's not a 64-bit JVM, you'll get this:

Error: This Java instance does not support a 64-bit JVM.
Please install the desired version.

Similarly, to check for a 32-bit JVM, run:

$ java -d32 -version

If it's not a 32-bit JVM, you'll get this:

Error: This Java instance does not support a 32-bit JVM.
Please install the desired version.

These flags were added in Java 7, deprecated in Java 9, removed in Java 10, and no longer available on modern versions of Java.

Best Answer

Related Solutions

.net – What does the Visual Studio “Any CPU” target mean

Java – How to tell if I’m running in 64-bit JVM or 32-bit JVM (from within a program)

Related Topic