Re: [Tinycc-devel] [PATCH] v2, preprocess all files from a command line with a -E switch

[Sergey Korshunoff]

I forgot to attach a patch

2015-01-06 15:29 GMT+03:00, Sergey Korshunoff <address@hidden>:
> pp-many-files, v2
> Don't drop a preprocessor defines when tcc going to preprocess a next
> file in the same pass like "tcc -E one.c two.c three.c -o combined.i"
> This will allow to speed up a compilation process by using a commamd like
>         tcc -E *.c | tcc -o program.exe -xc -
>
> Initialization from tcc_preprocess() is moved to tcc_add_file_internal().
> Call to free_defines(define_start) in tcc_preprocess()  is removed in
> assumption
> that free_defines(NULL) in  tcc_cleanup() will free all defines.
>
>
> 2015-01-04 1:46 GMT+03:00, Thomas Preud'homme <address@hidden>:
>> Le samedi 27 décembre 2014, 16:19:04 Sergey Korshunoff a écrit :
>>> Don't drop a preprocessor defines when tcc going to preprocess a next
>>> file in the same pass like
>>>         tcc -E one.c two.c three.c -o combined.i
>>>
>>> Currently tcc don't handle such case. The new behavior is better then
>>> the current one. After a patch it is possible to compile combined.i
>>> in case:
>>>
>>> * include files are properly protected by
>>>         #ifndef MY_INCLUDE_H
>>>         #define MY_INCLUDE_H
>>>           extern void func();
>>>         #endif
>>> * there is no incompatible declarations for the same name in *.c
>>>
>>> An archive for a test purpose is included
>>
>> Sorry but I'm not sure I like this functionality. When gcc compiles
>> several
>> .c
>> files they are compiled independently: macro are not kept accross files.
>> Doing
>> this only for -E flag would make it not very consistent. Also I don't
>> like
>> the
>> shape of the patch: initialization of the preprocessing should be split
>> out
>> of
>> the function but anyway that is not worth discussing further given
>> previous
>>
>> point.
>>
>> Best regards,
>>
>> Thomas
>>
>

2014-12-27-02-pp-many-files.patch
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