SCons Binary Directory

How is the binary/executable directory specified in SCons? It's easy to do as follows:

Program( target = 'bin/helloworld', source = 'src/helloworld.cc' )

The problem with this approach is when trying to do cross-platform builds. Here's an example that works:

StaticLibrary( target = 'helloworld', source = 'src/helloworldlib.cc' )

The output of this on a Unix system is a library named libhelloworld.a. An example where it doesn't work follows:

StaticLibrary( target = 'lib/helloworld', source = 'src/helloworldlib.cc' )

The output on a Unix system of this is a file helloworld.a in directory lib. This causes problems when LIBS is specif开发者_开发问答ied as ['helloworld'], which is the cross platform way to do it.

What is the parameter name to pass into StaticLibrary, SharedLibrary, and Program to output binaries into a directory other than the base directory?

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The manual suggests that you use a variant directory and a SConscript file in the source directory. In your example, place a SConscript file in the src directory:

StaticLibrary(target="helloworld", source="helloworldlib.cc")

and call that from the main SConstruct file:

SConscript("src/SConscript", variant_dir="lib")