Try going to the top of mathi.h and putting:

#undef isnan
#undef isinf

Stupid macros that don't look like macros.

On November 27, 2015 10:50:20 AM CST, Vasudev Kamath <vasudev@copyninja.info> wrote:
>
>Hi Ryan,
>
>Ryan Gonzalez <rymg19@gmail.com> writes:
>> See
>>
>https://bitbucket.org/plan9-from-bell-labs/9-cc/issues/1/problems-building-under-x64-linux
>> for some tips on fixing various errors you may encounter, including
>> this one. (I opened that issue like 8 months ago...)
>
>I followed your reported issue. I could fix first 2 points but I get
>different error after that.
>
>(cd src/libmath; mk  all)
>/home/vasudev/Documents/C_programming/compilers/9-cc/Linux/386/lib/libmath.a
>doesn't exist: assuming it will be an archive
>cc -c -m32 -g -O
>-I/home/vasudev/Documents/C_programming/compilers/9-cc/Linux/386/include
>-I/home/vasudev/Documents/C_programming/compilers/9-cc/include
>-DLINUX_386 blas.c
>In file included from
>/home/vasudev/Documents/C_programming/compilers/9-cc/Linux/386/include/lib9.h:9:0,
>                 from blas.c:1:
>/usr/include/features.h:148:3: warning: #warning "_BSD_SOURCE and
>_SVID_SOURCE are deprecated, use _DEFAULT_SOURCE" [-Wcpp]
># warning "_BSD_SOURCE and _SVID_SOURCE are deprecated, use
>_DEFAULT_SOURCE"
>   ^
>In file included from
>/home/vasudev/Documents/C_programming/compilers/9-cc/Linux/386/include/lib9.h:19:0,
>                 from blas.c:1:
>/home/vasudev/Documents/C_programming/compilers/9-cc/include/mathi.h:59:12:
>error: expected identifier or ‘(’ before ‘sizeof’
> extern int isnan(double);
>            ^
>mk: cc -c -m32 ...  : exit status=exit(1)
>mk: for j in ...  : exit status=exit(1)
>
>I tried to find sizeof in mathi.h but I can't really find
>anything. (Yeah there is no sizeof in either mathi.h or related
>files). 
>
>I'm unsure what the error is indicating. Any idea on how to proceed
>further?.

-- 
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