Description of problem:
Package deepin-calculator fails to build from source in Fedora Rawhide.

Version-Release number of selected component (if applicable):
5.7.20-3.fc38

Steps to Reproduce:
koji build --scratch f38 deepin-calculator-5.7.20-3.fc38.src.rpm

Additional info:
This package is tracked by Koschei. See:
https://koschei.fedoraproject.org/package/deepin-calculator

In file included from /usr/include/gtest/gtest-message.h:57,
                 from /usr/include/gtest/gtest-assertion-result.h:46,
                 from /usr/include/gtest/gtest.h:64,
                 from /builddir/build/BUILD/deepin-calculator-5.7.20/tests/src/control/ut_basickeypad.h:4,
                 from /builddir/build/BUILD/deepin-calculator-5.7.20/tests/src/control/ut_basickeypad.cpp:1:
/usr/include/gtest/internal/gtest-port.h:270:2: error: #error C++ versions less than C++14 are not supported.
  270 | #error C++ versions less than C++14 are not supported.
      |  ^~~~~

In gtest 1.13.0, support for C++ standards older than C++14 was dropped. You will have to build deepin-network-utils with C++14 or later in order to use the system copy of gtest.