Linking fails with 32-bit vulkan libs

[Michael Cronenworth]

Hi,

In trying to prepare the vkd3d library for cross-compiling I ran into a gcc/linker 
error.

Reproducer:
char main(void)
{
     char vkGetInstanceProcAddr ();
     return vkGetInstanceProcAddr ();
}

$ i686-w64-mingw32-gcc -o test test.c -lvulkan-1
/usr/lib/gcc/i686-w64-mingw32/11.2.1/../../../../i686-w64-mingw32/bin/ld: 
/tmp/ccvsAL1c.o:test.c:(.text+0xc): undefined reference to `vkGetInstanceProcAddr'
collect2: error: ld returned 1 exit status

The x86_64 compile works. This is on Rawhide.

mingw32-gcc-11.2.1-7.fc37.x86_64
mingw32-vulkan-loader-1.3.204.0-1.fc37.noarch
mingw64-gcc-11.2.1-7.fc37.x86_64
mingw64-vulkan-loader-1.3.204.0-1.fc37.noarch

Has anyone seen this type of issue?

Thanks,
Michael

[Sandro Mani]

On 14.03.22 22:11, Michael Cronenworth wrote:
> Hi,
>
> In trying to prepare the vkd3d library for cross-compiling I ran into 
> a gcc/linker error.
>
> Reproducer:
> char main(void)
> {
>     char vkGetInstanceProcAddr ();
>     return vkGetInstanceProcAddr ();
> }
>
> $ i686-w64-mingw32-gcc -o test test.c -lvulkan-1
> /usr/lib/gcc/i686-w64-mingw32/11.2.1/../../../../i686-w64-mingw32/bin/ld: 
> /tmp/ccvsAL1c.o:test.c:(.text+0xc): undefined reference to 
> `vkGetInstanceProcAddr'
> collect2: error: ld returned 1 exit status
>
> The x86_64 compile works. This is on Rawhide.
>
> mingw32-gcc-11.2.1-7.fc37.x86_64
> mingw32-vulkan-loader-1.3.204.0-1.fc37.noarch
> mingw64-gcc-11.2.1-7.fc37.x86_64
> mingw64-vulkan-loader-1.3.204.0-1.fc37.noarch
>
> Has anyone seen this type of issue?

Odd, working fine here, though had to add -lpathcch:

i686-w64-mingw32-gcc -o test test.c -lvulkan-1 -lpathcch

mingw32-gcc-11.2.1-7.fc37.x86_64
mingw64-vulkan-loader-1.3.204.0-1.fc37.noarch

And indeed

$ mingw-nm -gC 
/usr/i686-w64-mingw32/sys-root/mingw/lib/libvulkan-1.dll.a | grep 
vkGetInstanceProcAddr
00000000 I _imp__vkGetInstanceProcAddr@8
00000000 T vkGetInstanceProcAddr@8

Sandro

[Michael Cronenworth]

On 3/14/22 4:55 PM, Sandro Mani wrote:
> Odd, working fine here, though had to add -lpathcch:
>
> i686-w64-mingw32-gcc -o test test.c -lvulkan-1 -lpathcch

Adding that didn't help. It also fails on Koji builders when I tried a scratch build:

https://koji.fedoraproject.org/koji/taskinfo?taskID=84509668