Posted by ravas on Aug 26, 2015; 10:20pm
URL: https://forum.librecad.org/building-with-Qt-5-5-tp5712065p5712069.html

After trying a bunch of stuff and rebuilding 4-5 times... it still didn't work.
Then I hit the search engines even harder and found:

The 0xC0000135 error means "missing component", which may be a driver or
DLL.  
The basic problem was that, at least with gcc 4.4.0 in place, gdb needs the
system-wide PATH setting (Control Panel -> System -> Advanced -> Environment

Variables) to include at least MinGW\bin if not even MSYS\bin (or
MSYS\1.0\bin).  

https://sourceforge.net/p/mingw/mailman/message/24840777/

Projects→Run→Run Environment→Base environment for this run configuration
I set it to "Build environment" and the program ran.

The others didn't have the bin path.

God bless that guy...