Build

Add -ldl flag #84

Job	Run time
ubuntu (20.04)	10m 36s
ubuntu (22.04)	6m 41s
altlinux	4m 14s
macOS (12, 3.9, 5.9.*, release)	1m 55s
oldschool (centos, 7, python-debug, debug)	5m 1s
macOS (12, 3.9, 5.9.*, debug)	3m 49s
oldschool (centos, 7, python-debug, release)	5m 4s
windows (win64_mingw73, 3.10, 5.12.*, x64)	5m 49s
macOS (12, 3.11, 5.12.*, debug)	1m 33s
oldschool (rockylinux, 9, python3-devel, release)	3m 52s
windows (win64_msvc2017_64, 3.6, x64, 5.11.*)	4m 43s
windows (win64_msvc2019_64, 3.12, x64, 5.15.*, PythonQtCore PythonQtGui PythonQtMultimedia)	3m 55s
windows (win32_mingw53, 3.6, x86, 5.11.*)	5m 57s
	1h 3m 9s

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