CalculiX is using libstdc++ (this installation is configured to use libc++)

[Chris Jones]

oK, so that didn't help...

The better fix is anyway to patch the code to remove the improper 
implicit declaration, so suggest you look more to that direction.

On 27/07/2022 3:53 pm, Mark Brethen wrote:
> Clang12 w/-std=c99:
> :info:build parser.c:85:5: warning: implicit declaration of function 
> 'DrawCommandLine' is invalid in C99 [-Wimplicit-function-declaration]
> 
> Clang14 w/-std=c89:
> :info:build /usr/bin/clang -std=c89 -Os -arch x86_64 -I./ 
> -I/opt/local/include -I/opt/local/include/GL -I../../libSNL/src 
> -I../../glut-3.5/src   -c -o parser.o parser.c
> :info:build parser.c:85:5: error: implicit declaration of function 
> 'DrawCommandLine' [-Werror,-Wimplicit-function-declaration]
> :info:build     DrawCommandLine(keystroke, strlen(keystroke)+*curshft);
> :info:build     ^
> :info:build 1 error generated.
> :info:build make: *** [parser.o] Error 1
> 
> 
> 
> Mark Brethen
> mark.brethen at gmail.com <mailto:mark.brethen at gmail.com>
> 
> 
> 
>> On Jul 27, 2022, at 7:23 AM, Chris Jones <jonesc at hep.phy.cam.ac.uk 
>> <mailto:jonesc at hep.phy.cam.ac.uk>> wrote:
>>
>> Latest clang compilers probably default to a 'recent' c standard, 
>> unless otherwise told. If the code in question only builds using the 
>> less restrictive older standards, then the builds should specify this 
>> using -std=c89 for instance..
>