[cfe-dev] How to use libtooling to parse multiple files at once? and succesfully find stddef.h?

[Manuel Klimek]

On Mon, Nov 4, 2013 at 1:11 PM, Lukas Vogel <lukedirtwalkerdev at gmail.com>wrote:

> This is because clang has some own headers.
>
> Well sourceweb finds the headers because it uses the Clang Path to find
> the include directory (I guess).
>
> https://github.com/rprichard/sourceweb/blob/master/clang-indexer/main.cc#L398 (see
> the comment there)
>
> You can manually specify the include command (with the -I flag) for each
> Source-File in the compile_commands.json file.
> In linux the path to the files is something like
> /usr/lib/clang/3.3/include or /usr/lib/llvm-3.4/include/clang/
>
> Also look at this:
> http://clang.llvm.org/docs/FAQ.html#i-get-errors-about-some-headers-being-missing-stddef-h-stdarg-h
>

I don't think the builtin headers are a problem here - config.h seems to be
a header in the project that's not found.

>
> Hope that helps,
>
> Cheers
>
>
> 2013/11/4 rayjcwu <rayjcwu at gmail.com>
>
>> I change my target to gnu tools. Taking wget for example, I could build
>> it by
>> clang and I use  Bear <https://github.com/rizsotto/Bear>   to generate
>> compile_commands.json.
>> When I use  my code
>> <
>> https://github.com/rayjcwu/clang.libtooling.annotator/blob/master/main.cpp
>> >
>> , which does nothing meanful except visiting, to visit all ast nodes in
>> source code, I will get a lot of header files not found error.
>> But I could use  sourceweb <https://github.com/rprichard/sourceweb>  ,
>> which
>> is listed on exteral clang projects, to parse wget with the same .json
>> file
>> without any trouble. Even if I change my llvm/clang to version 3.2 the
>> error
>> still exists.
>>
>> Is there any quick possible solution for that before I tracing sourceweb
>> source code?
>>
>> ======
>> 1 error generated.
>> Error while processing /home/jcwu/repos/wget-1.14/src/init.c.
>> glthread/threadlib.c:19:10: fatal error: 'config.h' file not found
>> #include <config.h>
>>          ^
>> 1 error generated.
>> Error while processing
>> /home/jcwu/repos/wget-1.14/lib/glthread/threadlib.c.
>> In file included from ftp-basic.c:32:
>> ./wget.h:40:10: fatal error: 'config.h' file not found
>> #include "config.h"
>>          ^
>> 1 error generated.
>> Error while processing /home/jcwu/repos/wget-1.14/src/ftp-basic.c.
>> futimens.c:19:10: fatal error: 'config.h' file not found
>> #include <config.h>
>>          ^
>> 1 error generated.
>> Error while processing /home/jcwu/repos/wget-1.14/lib/futimens.c.
>> stripslash.c:19:10: fatal error: 'config.h' file not found
>> #include <config.h>
>>          ^
>> 1 error generated.
>> Error while processing /home/jcwu/repos/wget-1.14/lib/stripslash.c.
>> dup-safer-flag.c:21:10: fatal error: 'config.h' file not found
>> #include <config.h>
>>          ^
>> 1 error generated.
>> Error while processing /home/jcwu/repos/wget-1.14/lib/dup-safer-flag.c.
>> In file included from html-parse.c:92:
>> ./wget.h:40:10: fatal error: 'config.h' file not found
>> #include "config.h"
>>          ^
>> 1 error generated.
>> Error while processing /home/jcwu/repos/wget-1.14/src/html-parse.c.
>> In file included from http.c:32:
>> ./wget.h:40:10: fatal error: 'config.h' file not found
>> #include "config.h"
>>          ^
>> 1 error generated.
>> Error while processing /home/jcwu/repos/wget-1.14/src/http.c.
>> In file included from recur.c:32:
>> ./wget.h:40:10: fatal error: 'config.h' file not found
>> #include "config.h"
>>          ^
>> 1 error generated.
>>
>>
>>
>>
>>
>> --
>> View this message in context:
>> http://clang-developers.42468.n3.nabble.com/How-to-use-libtooling-to-parse-multiple-files-at-once-and-succesfully-find-stddef-h-tp4035389p4035587.html
>> Sent from the Clang Developers mailing list archive at Nabble.com.
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