openbabel-3.1.1-8.fc37 fails to build in Fedora 37:

[ 29%] Building CXX object src/formats/CMakeFiles/asciiformat.dir/__/depict/asciipainter.cpp.o
cd /builddir/build/BUILD/openbabel-openbabel-3-1-1/x86_64-redhat-linux-gnu/src/formats && /usr/bin/g++ -DBUILD_LINK_AS_DLL -DHAVE_EIGEN -DHAVE_EIGEN3 -DHAVE_LIBZ -DHAVE_RADPIJSON -DHAVE_SHARED_POINTER -DHAVE_WXWIDGETS -DUSING_DYNAMIC_LIBS -DWXUSINGDLL -D_FILE_OFFSET_BITS=64 -D__WXGTK__ -Dasciiformat_EXPORTS -I/builddir/build/BUILD/openbabel-openbabel-3-1-1/x86_64-redhat-linux-gnu/include -I/builddir/build/BUILD/openbabel-openbabel-3-1-1/data -I/builddir/build/BUILD/openbabel-openbabel-3-1-1/include -I/usr/include/eigen3 -I/usr/include/cairo -I/usr/include/inchi -I/usr/include/libxml2 -isystem /usr/lib64/wx/include/gtk3-unicode-3.0 -isystem /usr/include/wx-3.0 -O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1  -m64  -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -pthread -DNDEBUG -O3 -DNDEBUG -fPIC -pthread -std=gnu++11 -MD -MT src/formats/CMakeFiles/asciiformat.dir/__/depict/asciipainter.cpp.o -MF CMakeFiles/asciiformat.dir/__/depict/asciipainter.cpp.o.d -o CMakeFiles/asciiformat.dir/__/depict/asciipainter.cpp.o -c /builddir/build/BUILD/openbabel-openbabel-3-1-1/src/depict/asciipainter.cpp
make[2]: Leaving directory '/builddir/build/BUILD/openbabel-openbabel-3-1-1/x86_64-redhat-linux-gnu'
In file included from /builddir/build/BUILD/openbabel-openbabel-3-1-1/src/depict/asciipainter.cpp:18:
/builddir/build/BUILD/openbabel-openbabel-3-1-1/include/openbabel/obutil.h: In member function 'void OpenBabel::OBStopwatch::Start()':
/builddir/build/BUILD/openbabel-openbabel-3-1-1/include/openbabel/obutil.h:65:14: error: 'clock' was not declared in this scope; did you mean 'clock_t'?
   65 |       start= clock();
      |              ^~~~~
      |              clock_t

A difference between passing and failing buildroots is at <https://koschei.fedoraproject.org/build/13154417>.