gcc.texi: problem generating documentation

[christophe.jarry@ouvaton.org]

Quoting Ian Lance Taylor <iant@google.com>:

> Christophe Jarry <christophe.jarry@ouvaton.org> writes:
>
>> I did this in 'gcc-4.4.3/gcc/doc' folder extracted from gcc source, as
>> well as in 'gcc/gcc/doc' folder extracted from gcc _doc_ source:
>
> You need to first run configure in a new empty directory as described
> in the gcc installation instructions.  Then you can run "make info" in
> the gcc subdirectory.
>
> Ian
>

Thanks Ian, it seems to work when compiling from source code, in  
gcc-4.4.3/ directory:

   ./configure
   make info

Then, I have a gcc-4.4.3/gcc/doc/gcc.info file about 1.9M in size (ls  
-s -h gcc.info).


Now, is it possible to build GCC documentation directly from  
http://gcc.gnu.org/onlinedocs/docs-sources.tar.gz file, instead of  
having to download GCC whole source code? From extracted  
docs-sources.tar.gz file, I tried this:

   cd gcc/gcc/doc
   makeinfo -I include/ gcc.texi

But then, I have the following error message:

   include//gcc-common.texi:12: @include `gcc-vers.texi': No such file  
or directory.
   gcc.texi:125: warning: undefined flag: version-GCC.
   /cygdrive/d/cj/gnu-linux/gcc/gcc/doc//invoke.texi:1301: warning:  
undefined flag: srcdir.
   /cygdrive/d/cj/gnu-linux/gcc/gcc/doc//invoke.texi:1300: @include  
`{No value for `srcdir'}/../libiberty/at-file.texi': No such file or  
directory.
   /cygdrive/d/cj/gnu-linux/gcc/gcc/doc//bugreport.texi:91: warning:  
undefined flag: BUGURL.
   makeinfo: Removing output file  
`/cygdrive/d/cj/gnu-linux/gcc/gcc/doc/gcc.info' due to errors; use  
--force to preserve.

Notes:
- there is no 'gcc-vers.texi' file in the entire gcc/ directory,
- there is an 'at-file.texi' in gcc/libiberty/, but I don't know how  
to define 'srcdir' flag?

Thanks for your help,

Christophe

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