Build error with emscripten/clang about glm

[tez011]

I would like to bump this and add to the conversation:

While compiling glm 1.0.0 on MacOS with AppleClang 15.0.0 and GLM_ENABLE_CXX_20 set to ON, I'm presented with an error on 'glm.cpp':

error: include location '/usr/local/include' is unsafe for cross-compilation [-Werror, -Wpoison-system-directories]

Additionally, while compiling glm 1.0.0 on Linux with vanilla clang 16.0.6 and GLM_ENABLE_CXX_20 set to ON, I see the same issues as OP in func_packing.inl.

In both cases, for my compilers, merely removing -Weverything from line 244 allows the build to advance. -Werror appears to cause no issue for now.

I am also curious if this was done on purpose, as well as why -Weverything is set for clang but not gcc, intel, or msvc (/Wall is msvc's -Weverything).