[Scons-users] 回复： env.Textfile problem

[Daniel Moody]

hello liruncong,

First you should understand why it is recompiling every time with just
scons. Are your @files being generated differently because of ordering of
the contents? Can you pick one file which is always recompiled and use this
as the target to build with --debug=explain option?



On Sun, May 15, 2022 at 4:20 AM liruncong2018 via Scons-users <
scons-users at scons.org> wrote:

> Hi,
> I originally wanted to reproduce the problem in the test project, but I
> did find another problem, scons is recompiled every time.
> Test code: liruncong/NinJaTest at EnvTextFile (github.com)
> <https://github.com/liruncong/NinJaTest/tree/EnvTextFile>
> However, this problem was not found in my actual project.
> The test project uses the gcc toolchain, and my actual project uses the
> armclang (clang) toolchain.
>
> When ninja is not enabled, it is all recompiled every time you compile.
> After enabling ninja, the first two executions are all recompiles, and the
> third start is normal (ninja: no work to do.).
> After normal (three times later), modify defineOptsFile as follows, scons
> (enable ninja) does not recompile, which should be problematic.
> defineOptsFile = env.Textfile("build/__define_options.txt", [
>      "-DTEST1",
>      "-DTEST2"  # new added
> ])
>
> ------------------ 原始邮件 ------------------
> *发件人:* "Bill Deegan" <bill at baddogconsulting.com>;
> *发送时间:* 2022年5月15日(星期天) 上午7:20
> *收件人:* "SCons users mailing list"<scons-users at scons.org>;
> *抄送:* "liruncong2018"<liruncong2018 at qq.com>;
> *主题:* Re: [Scons-users] env.Textfile problem
>
> Not enough information to help you.
>
> What's your scons logic look like for this?
>
> On Sat, May 14, 2022 at 3:04 AM liruncong2018 via Scons-users <
> scons-users at scons.org> wrote:
>
>> Hi,
>> The source(env.Textfile second parameter) change did not trigger
>> recompilation when using env.Textfile.
>> scons version: Commits · dmoody256/scons (github.com)
>> <https://github.com/dmoody256/scons/commits/ninja_integration_branch>
>> commit: force utf-8
>> <https://github.com/dmoody256/scons/commit/c046aa853c177506543c0510562121b04f189e87>
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