On an x86 Solaris 11.4 system, the standard procedure build of python from source fails to build the 'select' module. Make install then fails upon trying to import 'select'.

In the make output, while gcc is building 'select', these errors are printed:

building 'select' extension
gcc -fPIC -Wno-unused-result -Wsign-compare -g -Og -Wall -D_REENTRANT -std=c99 -Wextra -Wno-unused-result -Wno-unused-parameter -Wno-missing-field-initializers -Werror=implicit-function-declaration -fvisibility=hidden -I./Include/internal -I./Include -I. -I/usr/local/include -I/root/cpython-solaris/Include -I/root/cpython-solaris -c /root/cpython-solaris/Modules/selectmodule.c -o build/temp.solaris-2.11-i86pc.64bit-3.9-pydebug/root/cpython-solaris/Modules/selectmodule.o
/root/cpython-solaris/Modules/selectmodule.c:1147:21: error: 'devpoll_methods' undeclared here (not in a function); did you mean 'devpoll_dealloc'?
     {Py_tp_methods, devpoll_methods},
                     ^~~~~~~~~~~~~~~
                     devpoll_dealloc
/root/cpython-solaris/Modules/selectmodule.c:2299:20: warning: 'devpoll_methods' defined but not used [-Wunused-variable]
 static PyMethodDef devpoll_methods[] = {
                    ^~~~~~~~~~~~~~~

Attached is the combined outputs of ./configure, make, and make install

New changeset 31245d19f2de03e57fd93c5169f00a36d7410fcf by Batuhan Taskaya in branch 'master':
bpo-39740: Early declare devpoll_methods to support old compilers (GH-19281)
https://github.com/python/cpython/commit/31245d19f2de03e57fd93c5169f00a36d7410fcf

@RobHammann it should be resolved now, please feel free to re-open issue if you get into trouble (I manually tested on solaris)