/opt/alt/python35/lib64/pkgconfig
Edit: /opt/alt/python35/lib64/pkgconfig/python-3.5.pc (319B)
# See: man pkg-config
prefix=/opt/alt/python35
exec_prefix=/opt/alt/python35
libdir=/opt/alt/python35/lib64
includedir=/opt/alt/python35/include
Name: Python
Description: Python library
Requires:
Version: 3.5
Libs.private: -lpthread -ldl -lutil -lrt
Libs: -L${libdir} -lpython3.5m
Cflags: -I${includedir}/python3.5m