Re: [Linuxsampler-devel] little problem to compile linuxsampler with the last GCC15

[Philippe D. <phi...@la...>]

Le 12/11/2025 à 13:14, Christian Schoenebeck a écrit :
> On Tuesday, November 11, 2025 12:15:22 AM CET Philippe DIDIER wrote:
> [...]
>> But I failed to build LinuxSampler for the next coming version of my
>> distribution using GCC15.2 :
>> my system was not supposed to be UNIX98 compatible
>> But indeed it is
>>
>> I simply have had to add this patch to add one line in configure.ac and
>> it's OK now :
>>
>> --- /configure.ac    2025-11-07 14:35:24.000000000 +0100
>> +++ /configure.ac    2025-11-09 19:12:47.608538979 +0100
>> @@ -131,6 +131,7 @@
>>    #define _GNU_SOURCE 1
>>    #endif
>>    #include <features.h>
>> +#include <stdlib.h>
>>    void main(void) {
>>    #if _XOPEN_SOURCE >= 500
>>    exit(0); /* UNIX98 compatible */
> Thanks for letting us know!
>
> Could you provide more details? I assume you are building on Windows, right?
> What are the exact compile errors you get?
>
> That Unix98 check is fairly old. So the question is whether we should change
> the check here, or something in our sources. Because on Windows you get more
> and more POSIX APIs. Back then we simply considered its either UNIX(98) or
> Windows.
>
> For instance, chances are that stdlib.h is simply doing #undef _GNU_SOURCE
> there, in that case this #include would just fight the symptom.
>
> /Christian
>
>
>
>
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Hi Christian

I am using a Linux distribution (Mageia)
The actual version of Mageia is Mageia9
No problem to build LinuxSampler 2.4.1 with GCC 12.3

But we are preparing the next MAgeia10 inside Mageia Caludron
and Mageia10 will be built upon GCC15.2
That's where the problem appeared (GCC15.x is more strict)
The workaround was to modify configure.ac with a patch
adding only :
#include <stdlib.h> after line 133 That's enough