error: call to member function 'WriteNumber' is ambiguous

[ryandesign]

I have seen the warning that "CMake is not an officially supported build system for love on Apple platforms" but I'm trying it anyway.

I got these errors when building the main branch with Apple clang version 14.0.0 (clang-1400.0.29.202):

src/libraries/vma/vk_mem_alloc.h:6446:10: error: call to member function 'WriteNumber' is ambiguous
    json.WriteNumber(allocationCount);
    ~~~~~^~~~~~~~~~~
src/libraries/vma/vk_mem_alloc.h:5686:21: note: candidate function
void VmaJsonWriter::WriteNumber(uint32_t n)
                    ^
src/libraries/vma/vk_mem_alloc.h:5693:21: note: candidate function
void VmaJsonWriter::WriteNumber(uint64_t n)
                    ^

src/libraries/vma/vk_mem_alloc.h:6449:10: error: call to member function 'WriteNumber' is ambiguous
    json.WriteNumber(unusedRangeCount);
    ~~~~~^~~~~~~~~~~
src/libraries/vma/vk_mem_alloc.h:5686:21: note: candidate function
void VmaJsonWriter::WriteNumber(uint32_t n)
                    ^
src/libraries/vma/vk_mem_alloc.h:5693:21: note: candidate function
void VmaJsonWriter::WriteNumber(uint64_t n)
                    ^

src/libraries/vma/vk_mem_alloc.h:15970:34: error: call to member function 'ContinueString' is ambiguous
                            json.ContinueString(index++);
                            ~~~~~^~~~~~~~~~~~~~
src/libraries/vma/vk_mem_alloc.h:5657:21: note: candidate function
void VmaJsonWriter::ContinueString(uint32_t n)
                    ^
src/libraries/vma/vk_mem_alloc.h:5663:21: note: candidate function
void VmaJsonWriter::ContinueString(uint64_t n)
                    ^

[nikeinikei]

It's not directly the problem, but the Vulkan backend shouldn't be included in the macos build anyway (which is the sole user of VMA), you can try excluding it by modifying cmakelists.txt, the dependency on VMA should be gone then as well.

[ryandesign]

#2069 works around the problem on macOS by not building the Vulkan parts and instead building the Metal parts, but you would presumably still run into this error if you use a similar compiler on Linux or Windows.

[slime73]

you would presumably still run into this error if you use a similar compiler on Linux or Windows.

I don't think I've heard of anyone having compile problems when using clang on Linux with love 12. Is it definitely an issue?

[slime73]

Actually it looks like it was an apple-specific issue: GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator@3f9f667

If we ever decide to support vulkan on macOS (which currently we don't), we'll just make sure VMA is up to date.