SCONS 中所有构建目标的隐式列表？

发布于 2024-09-16 00:07:36 字数 742 浏览 2 评论 0原文

我有一个 scons 项目，强制包含多个头文件作为编译器标志。

# Forced include files passed directly to the compiler
env.Append(CCFLAGS = ['/FIinclude.h'])

这些文件不包含在项目中的任何文件中。我需要为它们添加显式依赖项。

forced_include_headers = ['include.h']

# Trying to add an explicit dependency for each build target
for object in BUILD_TARGETS:
  env.Depends(object, forced_include_headers)

我遇到的问题是 BUILD_TARGETS 列表为空。它似乎只包含从 COMMAND_LINE_TARGETS 或 DEFAULT_TARGETS 传递的内容。我们项目中的所有目标都是隐式构建的。我们不使用 env.Default 等。有没有办法获取隐式目标列表，或者我必须手动构建它？我注意到 TARGETS 是保留的，似乎也不包含我想要的内容。

我可以为所有目标在各自的 SConscript 文件中添加一个 env.Depends(target,forced_include_headers) ，但该项目相当大。

原文

I have an scons project that force includes several header files as a compiler flag.

# Forced include files passed directly to the compiler
env.Append(CCFLAGS = ['/FIinclude.h'])

These files are not included by any files in the project. I need to add an explicit dependency for them.

forced_include_headers = ['include.h']

# Trying to add an explicit dependency for each build target
for object in BUILD_TARGETS:
  env.Depends(object, forced_include_headers)

The problem I'm running into is that BUILD_TARGETS list is empty. It seems to only contain things passed from COMMAND_LINE_TARGETS or DEFAULT_TARGETS. All of the targets in our project are built implicitly. We do not make use of env.Default, etc. Is there a way to get the implicit target list, or do I have to manually build it? I noticed that TARGETS is reserved and does not seem to contain what I want either.

I can add an env.Depends(target, forced_include_headers) for all of the targets in their respective SConscript files, but the project is quite large.

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不交电费瞎发啥光 2024-09-23 00:07:36

我不确定这是解决问题的最佳方法（事实上，我认为创建伪构建器的想法效果更好），但此代码将返回 Object 目标列表:

# Typical SConstruct / SConscript
env = Environment()
env.Program('foo.c')
lib = env.SharedLibrary('bar.c')
env.Program('foo2.c', LIBS=[lib])
SConscript('subdir/SConscript', exports={'env':env})

# Get a list of all Object targets
def get_all_targets(env, node='.'):
    def get_all_targets_iter(env, node):
        if node.has_builder() and node.get_builder().get_name(env) in ('Object', 'SharedObject'):
            yield node
        for kid in node.all_children():
            for kid in get_all_targets(env, kid):
                yield kid
    node = env.arg2nodes(node, env.fs.Entry)[0]
    return list(get_all_targets_iter(env, node))

# Force them all to depend upon some header
env.Depends(get_all_targets(env), 'site_wide.h')

I'm not sure that this is the best way to solve the problem (in fact, I think the idea of creating a pseudo-builder works better), but this code will return a list of Object targets:

# Typical SConstruct / SConscript
env = Environment()
env.Program('foo.c')
lib = env.SharedLibrary('bar.c')
env.Program('foo2.c', LIBS=[lib])
SConscript('subdir/SConscript', exports={'env':env})

# Get a list of all Object targets
def get_all_targets(env, node='.'):
    def get_all_targets_iter(env, node):
        if node.has_builder() and node.get_builder().get_name(env) in ('Object', 'SharedObject'):
            yield node
        for kid in node.all_children():
            for kid in get_all_targets(env, kid):
                yield kid
    node = env.arg2nodes(node, env.fs.Entry)[0]
    return list(get_all_targets_iter(env, node))

# Force them all to depend upon some header
env.Depends(get_all_targets(env), 'site_wide.h')

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