How can I build multiple executables with similar rules using SConscript and SConstruct files?

Building Multiple Executables with Similar Rules Using Scons

To build multiple executables with similar rules using Scons, consider the following approach:

Sconscript and SConstruct Files

It is possible to use both SConscript files and SConstruct files in your project, but it's important to note the following:

• SConscript files should be placed above SConstruct files in the directory hierarchy.
• When Scons is run, it will first look for a SConscript file in the current directory, then recursively search for a SConstruct file.
• If both a SConscript file and a SConstruct file are present in the same directory, Sconscript takes precedence.

Using Builders for Python Scripts

Scons supports building files from Python scripts using builders. Here's an example:

<code class="scons">env = Environment()
env['BUILDERS']['PythonScript'] = Builder(
    action='python $SOURCES $TARGETS $ENV',
    target_factory='Sconscript'
)</code>

With this builder, you can generate C files from Python scripts like this:

env.PythonScript('lesson.cpp', 'lesson.py')

Build Process

To achieve the desired build process:

1. Lesson directories: Each lesson directory should contain a SConscript file with the same build rules for compiling the executables.
2. Building from lesson directories: Running Scons in a lesson directory (e.g., scons even_or_odd) will build the executable in that directory using the defined rules.

3. Building from the root directory: Running Scons in the root directory (e.g., scons all) should:

   • Generate even_or_odd/lesson.cpp from even_or_odd/lesson.py.
   • Compile all necessary source files and build all executables.

By following these steps, you can leverage Scons to build multiple executables with similar rules, both from lesson directories and the root directory, while also supporting Python script-generated C files.

The above is the detailed content of How can I build multiple executables with similar rules using SConscript and SConstruct files?. For more information, please follow other related articles on the PHP Chinese website!