Like the title says.

Tried building with these `configure` options:

    --enable-optimizations \
    --with-lto \
    --enable-shared \
    --enable-loadable-sqlite-extensions \
    --enable-ipv6 \
    --with-system-expat \
    --with-system-ffi \
    --with-system-libmpdec \
    --with-doc-strings \
    --with-pymalloc \
    --with-c-locale-coercion \
    --with-ensurepip=upgrade

And `CFLAGS="-O3 -march=native"`

But got this error message:

```
/usr/bin/ld: ./libpython3.7m.so: undefined reference to `__gcov_pow2_profiler_atomic'
/usr/bin/ld: ./libpython3.7m.so: undefined reference to `__gcov_average_profiler_atomic'
collect2: error: ld returned 1 exit status
make[3]: *** [Makefile:733: Programs/_testembed] Error 1
make[3]: Leaving directory '/tmp/python-build.20190712163526.2762/Python-3.7.4'
make[2]: *** [Makefile:521: build_all_generate_profile] Error 2
make[2]: Leaving directory '/tmp/python-build.20190712163526.2762/Python-3.7.4'
make[1]: *** [Makefile:497: profile-gen-stamp] Error 2
make[1]: Leaving directory '/tmp/python-build.20190712163526.2762/Python-3.7.4'
make: *** [Makefile:509: profile-run-stamp] Error 2
```