Build problems with macOS Sonoma

[lpar]

In file included from /Users/meta/Programming/Go/src/github.com/RJVB/afsctool/src/utils.cpp:10:
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX14.0.sdk/usr/include/c++/v1/string:537:
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX14.0.sdk/usr/include/c++/v1/__algorithm/max.h:13:
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX14.0.sdk/usr/include/c++/v1/__algorithm/comp_ref_type.h:13:
In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX14.0.sdk/usr/include/c++/v1/__debug:16:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX14.0.sdk/usr/include/c++/v1/cstddef:46:5: error: <cstddef> tried including <stddef.h> but didn't find libc++'s <stddef.h> header.           This usually means that your header search paths are not configured properly.           The header search paths should contain the C++ Standard Library headers before           any C Standard Library, and you are probably using compiler flags that make that           not be the case.
#   error <cstddef> tried including <stddef.h> but didn't find libc++'s <stddef.h> header. \
    ^

It looks as if stddef.h is in /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/stddef.h rather than /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX14.0.sdk/usr/include/stddef.h

i.e. Apple seem to have split the C++ headers into two locations, or stopped supporting C++ in the 14.0 SDK.

There's also a /Library/Developer/CommandLineTools/SDKs/MacOSX14.0.sdk/usr/include/ which seems to include both string and stddef.h, and the name suggests it may be appropriate. Unfortunately I don't know enough about Cmake to know how to try it.

[RJVB]

On Wednesday September 27 2023 10:17:25 mathew wrote:

/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX14.0.sdk/usr/include/c++/v1/cstddef:46:5: error: <cstddef> tried including <stddef.h> but didn't find libc++'s <stddef.h> header.           This usually means that your header search paths are not configured properly.           The header search paths should contain the C++ Standard Library headers before           any C Standard Library, and you are probably using compiler flags that make that           not be the case.
#   error <cstddef> tried including <stddef.h> but didn't find libc++'s <stddef.h> header. \

This rings a bell, now if I could remember where the clapper is ... :)