c++ - scons - 编译后运行程序

Question

我想在编译后直接运行构建的程序，这样我就可以用scons构建和启动我的程序。

我认为这个 SConstruct-File 会在程序重建时启动它。

main = Program( "main", [ "main.cc" ] )

test = Command( None, None, "./main >testoutput" )
Depends( test, main )

每次我运行 scons

都会启动它

main = Program( "main", [ "main.cc" ] )

test = Command( None, None, "./main >testoutput" )
Requires( test, main )

但两者都不行，我的程序从未执行过。我做错了什么？

Answer 1

只有在构建时才运行程序应该会更好。

main = Program( "main", [ "main.cc" ] )

test = Command( target = "testoutput",
                source = "./main",
                action = "./main > $TARGET" )
Depends( test, main )

并且每次都使用 AlwaysBuild() 来运行它，正如@doublep 所提到的那样:

main = Program( "main", [ "main.cc" ] )

test = Command( target = "testoutput",
                source = "./main",
                action = "./main > $TARGET" )
AlwaysBuild( test )

如果你想查看测试输出的内容，你可以这样做:

(假设是 Linux。用一些 Python 代码打印文件会更便携)

main = Program( "main", [ "main.cc" ] )

test = Command( target = "testoutput",
                source = "./main",
                action = ["./main > $TARGET",
                          "cat $TARGET"] )
AlwaysBuild( test )