core/routing.o: In function `uwsgi_route_condition_regexp':
routing.c:(.text+0x365c): undefined reference to `pcre_free_study'
routing.c:(.text+0x3680): undefined reference to `pcre_free_study'
collect2: ld returned 1 exit status
*** error linking uWSGI ***
----------------------------------------
ERROR: Failed building wheel for uwsgi
Running setup.py clean for uwsgi
Failed to build uwsgi
DEPRECATION: Could not build wheels for uwsgi which do not use PEP 517. pip will fall back to legacy 'setup.py install' for these. pip 21.0 will remove support for this functionality. A possible replacement is to fix the wheel build issue reported above. You can find discussion regarding this at https://github.com/pypa/pip/issues/8368.
Installing collected packages: uwsgi
Running setup.py install for uwsgi ... error
最后發現是pcre-devel在搗鬼，卸載
yum remove pcre-devel
關聯卸載了兩個東西
Erasing : php56w-devel-5.6.40-1.w6.x86_64 1/2 Erasing : pcre-devel-7.8-7.el6.x86_64
再安裝，沒問題：
python36 -m pip install uwsgi