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Background install of Xcode 9.0 this morning breaks all my Qt Creator builds with: 'wchar.h' file not found - all previous advice fails to resolve... e.g. macOS 'wchar.h' File Not Found All help and advice much appreciated

Jeremy Thornton
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1 Answers1

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a) Check software updates to ensure you have also updated the command line tools.

b) check that the installation is correct:

$ cat > nod.cpp
#include <wchar.h>

int main()
{
}
^D

$ c++ nod.cpp

c) If that's all good, you probably need reconfigure and rebuild dependencies using the new toolchain.

automake, cmake, etc deduce full path names and embed them in makefiles and project files.

Richard Hodges
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