Bug in CYGWIN's UUID library: GUID_NULL not found.

Bug in CYGWIN's UUID library: GUID_NULL not found.

[Carlo B.]

Hello,
I think that there is a bug into the uuid library, the one to be used
with the W32API for the POSIX core.
Please have a look to the following tiny test code:

//====================
#include <windows.h>
#include <initguid.h>
#include <ks.h>
#include <stdio.h>

int main()
{
    printf("GUID_NULL=\"%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X\"\n",
        GUID_NULL.Data1,
        GUID_NULL.Data2, GUID_NULL.Data3,
        GUID_NULL.Data4[0], GUID_NULL.Data4[1],
        GUID_NULL.Data4[2], GUID_NULL.Data4[3],
        GUID_NULL.Data4[4], GUID_NULL.Data4[5],
        GUID_NULL.Data4[6], GUID_NULL.Data4[7]
    );

    return 0;
}
//====================

Compiling it with x86_64-pc-cygwin or i686-pc-cygwin does not work:

$ gcc e.c -o e.exe -luuid
/usr/lib/gcc/x86_64-pc-cygwin/11/../../../../x86_64-pc-cygwin/bin/ld:
/tmp/ccyJK3d9.o:e.c:(.rdata$.refptr.GUID_NULL[.refptr.GUID_NULL]+0x0):
undefined reference to `GUID_NULL'
collect2: error: ld returned 1 exit status

But it works fine when using MinGW-w64 compilers:

$ x86_64-w64-mingw32-gcc e.c -o e.exe -luuid

$ ./e.exe
GUID_NULL="00000000-0000-0000-0000-000000000000"


I discovered this issue when making a new FluidSynth package for
CYGWIN for my repository of packages.
Can you confirm it?
Thank you very much for your time.

Sincerely,

Carlo Bramini.

Re: Bug in CYGWIN's UUID library: GUID_NULL not found.

[Takashi Yano]

On Mon, 20 Feb 2023 16:48:50 +0100
"Carlo B. wrote:
> Hello,
> I think that there is a bug into the uuid library, the one to be used
> with the W32API for the POSIX core.
> Please have a look to the following tiny test code:
> 
> //====================
> #include <windows.h>
> #include <initguid.h>
> #include <ks.h>
> #include <stdio.h>
> 
> int main()
> {
>     printf("GUID_NULL=\"%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X\"\n",
>         GUID_NULL.Data1,
>         GUID_NULL.Data2, GUID_NULL.Data3,
>         GUID_NULL.Data4[0], GUID_NULL.Data4[1],
>         GUID_NULL.Data4[2], GUID_NULL.Data4[3],
>         GUID_NULL.Data4[4], GUID_NULL.Data4[5],
>         GUID_NULL.Data4[6], GUID_NULL.Data4[7]
>     );
> 
>     return 0;
> }
> //====================
> 
> Compiling it with x86_64-pc-cygwin or i686-pc-cygwin does not work:
> 
> $ gcc e.c -o e.exe -luuid
> /usr/lib/gcc/x86_64-pc-cygwin/11/../../../../x86_64-pc-cygwin/bin/ld:
> /tmp/ccyJK3d9.o:e.c:(.rdata$.refptr.GUID_NULL[.refptr.GUID_NULL]+0x0):
> undefined reference to `GUID_NULL'
> collect2: error: ld returned 1 exit status

You linked /usr/lib/libuuid.dll.a rather than /usr/lib/w32api/libuuid.a.
You might want: gcc e.c -o e.exe -L/usr/lib/w32api -luuid

-- 
Takashi Yano <takashi.yano@nifty.ne.jp>

Re: Bug in CYGWIN's UUID library: GUID_NULL not found.

[Carlo B.]

I see... problem solved.
Thank you very much.
Sincerely,

Carlo Bramini.

Il giorno lun 20 feb 2023 alle ore 17:01 Takashi Yano
<takashi.yano@nifty.ne.jp> ha scritto:
>
> On Mon, 20 Feb 2023 16:48:50 +0100
> "Carlo B. wrote:
> > Hello,
> > I think that there is a bug into the uuid library, the one to be used
> > with the W32API for the POSIX core.
> > Please have a look to the following tiny test code:
> >
> > //====================
> > #include <windows.h>
> > #include <initguid.h>
> > #include <ks.h>
> > #include <stdio.h>
> >
> > int main()
> > {
> >     printf("GUID_NULL=\"%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X\"\n",
> >         GUID_NULL.Data1,
> >         GUID_NULL.Data2, GUID_NULL.Data3,
> >         GUID_NULL.Data4[0], GUID_NULL.Data4[1],
> >         GUID_NULL.Data4[2], GUID_NULL.Data4[3],
> >         GUID_NULL.Data4[4], GUID_NULL.Data4[5],
> >         GUID_NULL.Data4[6], GUID_NULL.Data4[7]
> >     );
> >
> >     return 0;
> > }
> > //====================
> >
> > Compiling it with x86_64-pc-cygwin or i686-pc-cygwin does not work:
> >
> > $ gcc e.c -o e.exe -luuid
> > /usr/lib/gcc/x86_64-pc-cygwin/11/../../../../x86_64-pc-cygwin/bin/ld:
> > /tmp/ccyJK3d9.o:e.c:(.rdata$.refptr.GUID_NULL[.refptr.GUID_NULL]+0x0):
> > undefined reference to `GUID_NULL'
> > collect2: error: ld returned 1 exit status
>
> You linked /usr/lib/libuuid.dll.a rather than /usr/lib/w32api/libuuid.a.
> You might want: gcc e.c -o e.exe -L/usr/lib/w32api -luuid
>
> --
> Takashi Yano <takashi.yano@nifty.ne.jp>