^
D:\OpenCV\opencv\sources\3rdparty\libjpeg-turbo\src\jmemmgr.c:662:11: note: each
undeclared identifier is reported only once for each function it appears in
3rdparty\libjpeg-turbo\CMakeFiles\libjpeg-turbo.dir\build.make:678: recipe for t
arget '3rdparty/libjpeg-turbo/CMakeFiles/libjpeg-turbo.dir/src/jmemmgr.c.obj' fa
iled
mingw32-make[2]: *** [3rdparty/libjpeg-turbo/CMakeFiles/libjpeg-turbo.dir/src/jm
emmgr.c.obj] Error 1
CMakeFiles\Makefile2:385: recipe for target '3rdparty/libjpeg-turbo/CMakeFiles/l
ibjpeg-turbo.dir/all' failed
mingw32-make[1]: *** [3rdparty/libjpeg-turbo/CMakeFiles/libjpeg-turbo.dir/all] E
rror 2
Makefile:161: recipe for target 'all' failed
mingw32-make: *** [all] Error 2