I faced some problems when I was trying to make a QOCI driver for QT 5.7.
I was folloing this Guide (How to build Qt QOCI (Oracle Database driver) on Windows with MinGW?) and it helped before the "Third try".
When after the "Second try" I call mingw32-make I have such a mistake debug\qsqlocid_resource_res.o no such file or directory
In Make.Release file I have:
-LC:\Qt\Qt5.7.0\5.7\mingw53_32\include\lib -LC:\oraclexe\app\oracle\product\11.2.0\server\bin -lQt5Sqld -lQt5Cored debug\qsqlocid_resource_res.o -LC:\oraclexe\app\oracle\product\11.2.0\server\oci\lib\MSVC
and in In Make.Debug I have:
-LC:\Qt\Qt5.7.0\5.7\mingw53_32\include\lib C:\oraclexe\app\oracle\product\11.2.0\server\bin debug\qsqlocid_resource_res.o -loci -lQt5Sqld4 -lQt5Cored -LC:\oraclexe\app\oracle\product\11.2.0\server\oci\lib\MSVC
So what I colud do wrong?