scons：对象，源代码，可执行文件，都在单独的目录中

Question

I'm new to scons and I managed to figure out how to redirect the binaries (executables+objects) that one (con)script produces into another directory.

In my main project directory (root), I have a single SConstruct file, which contains the following line:

SConscript("source/SConscript", variant_dir="bin")

As evident, it sets the build (variant) directory of the source/SConscript script to be bin .

source/SConscript :

common = []

env = Environment()
env.Program("test", ["test.cpp"] + common)
env.Program("sdl-test", ["sdl_test.cpp"] + common, LIBS=["SDL2"])

My current setup is less than idea...

I'd like to have all the object files end up in object , keep all the source files in source , and have the final program binaries be built in bin directory.

How can I achieve that with scons? (Preferably without any messing with imperative (regular) Python, I hope that this is a built-in feature.)

Answer 1

You can do it by adding another SConscript script for the objects where you would set the variant_dir to a different directory, it would look something like this:

SConstruct

env = Environment()
SConscript('source/SConscript_obj', variant_dir='object',
           duplicate=0, exports='env')
SConscript('source/SConscript', variant_dir='bin',
           duplicate=0, exports='env')

source/SConscript_obj

Import('env')

env.Object("test.cpp")
env.Object("sdl_test.cpp")

source/SConscript

Import('env')

env.Program("test", ["#/object/test.o"])
env.Program("sdl-test", ["#/object/sdl_test.o"], LIBS=["SDL2"])

Or, in SConscript_obj, you could make a library instead of just compiling objects.

You could also consider adding calls to VariantDir in the existing SConscript, but Im not sure how well that would work.