Compile qmc2 under win10 x64 with latest mamedev tools + all updates .
For qmc2 take info for packages from wiki:
pacman -S mingw-w64-x86_64-SDL2 mingw-w64-x86_64-qt5 mingw-w64-x86_64-qtwebkit subversion
and start compile....
first problem ..report for missing
qmake-qt5found and fixed this :
C:\msys64\src\qmc2\arch\default.cfg
line #3 QMAKE = qmake-qt5
rename to QMAKE = qmake
after Successful compile create standalone executables:
second problem take libs from devtoools but qmc2-mame report for 3 missing libs :
libicudt64.dll
libicuin64.dll
libicuuc64.dll
from last update
mingw-w64-x86_64-icu-65.1-1-any.pkg.tar.xz this libs missing , found in previous build :
mingw-w64-x86_64-icu-64.2-1-any.pkg.tar.xzand final: qmc2-mame start first time , configuration and etc. ect ...,second start crashed
upload build here :
QMC2_test.zip i'm not sure for correct libs and folder structure
Rene when u have free time please look my nonsense.
Thank you

P.S. forgot: compile with parameter
WIP=1P.S.2: without WIP=1 not crashed:)