Here it is @CandyFace
02:34:30: Running steps for project pencil2d…
02:34:30: Configuration unchanged, skipping qmake step.
02:34:30: Starting: “C:\Qt\Tools\mingw530_32\bin\mingw32-make.exe” -j8
cd 3rdlib\qtmypaint\ && ( if not exist Makefile C:\Qt\5.9.7\mingw53_32\bin\qmake.exe -o Makefile E:\NOVOS\PENCIL\CandyFace-pencil-implement_mypaint\pencil-implement_mypaint\3rdlib\qtmypaint\qtmypaint.pro -spec win32-g++ “CONFIG+=debug” “CONFIG+=qml_debug” ) && C:/Qt/Tools/mingw530_32/bin/mingw32-make -f Makefile
mingw32-make[1]: Entering directory ‘E:/NOVOS/PENCIL/CandyFace-pencil-implement_mypaint/build-pencil2d-Desktop_Qt_5_9_7_MinGW_32bit-Debug/3rdlib/qtmypaint’
cd json-c\ && ( if not exist Makefile C:\Qt\5.9.7\mingw53_32\bin\qmake.exe -o Makefile E:\NOVOS\PENCIL\CandyFace-pencil-implement_mypaint\pencil-implement_mypaint\3rdlib\qtmypaint\json-c\json-c.pro -spec win32-g++ “CONFIG+=debug” “CONFIG+=qml_debug” ) && C:/Qt/Tools/mingw530_32/bin/mingw32-make -f Makefile
mingw32-make[2]: Entering directory ‘E:/NOVOS/PENCIL/CandyFace-pencil-implement_mypaint/build-pencil2d-Desktop_Qt_5_9_7_MinGW_32bit-Debug/3rdlib/qtmypaint/json-c’
C:/Qt/Tools/mingw530_32/bin/mingw32-make -f Makefile.Debug
mingw32-make[3]: Entering directory ‘E:/NOVOS/PENCIL/CandyFace-pencil-implement_mypaint/build-pencil2d-Desktop_Qt_5_9_7_MinGW_32bit-Debug/3rdlib/qtmypaint/json-c’
mingw32-make[3]: Nothing to be done for ‘first’.
mingw32-make[3]: Leaving directory ‘E:/NOVOS/PENCIL/CandyFace-pencil-implement_mypaint/build-pencil2d-Desktop_Qt_5_9_7_MinGW_32bit-Debug/3rdlib/qtmypaint/json-c’
mingw32-make[2]: Leaving directory ‘E:/NOVOS/PENCIL/CandyFace-pencil-implement_mypaint/build-pencil2d-Desktop_Qt_5_9_7_MinGW_32bit-Debug/3rdlib/qtmypaint/json-c’
cd libmypaint\ && ( if not exist Makefile C:\Qt\5.9.7\mingw53_32\bin\qmake.exe -o Makefile E:\NOVOS\PENCIL\CandyFace-pencil-implement_mypaint\pencil-implement_mypaint\3rdlib\qtmypaint\libmypaint\libmypaint.pro -spec win32-g++ “CONFIG+=debug” “CONFIG+=qml_debug” ) && C:/Qt/Tools/mingw530_32/bin/mingw32-make -f Makefile
mingw32-make[2]: Entering directory ‘E:/NOVOS/PENCIL/CandyFace-pencil-implement_mypaint/build-pencil2d-Desktop_Qt_5_9_7_MinGW_32bit-Debug/3rdlib/qtmypaint/libmypaint’
C:/Qt/Tools/mingw530_32/bin/mingw32-make -f Makefile.Debug
mingw32-make[3]: Entering directory ‘E:/NOVOS/PENCIL/CandyFace-pencil-implement_mypaint/build-pencil2d-Desktop_Qt_5_9_7_MinGW_32bit-Debug/3rdlib/qtmypaint/libmypaint’
g++ -shared -Wl,-subsystem,windows -mthreads -Wl,–out-implib,debug\libmypaint.a -o debug\mypaint.dll -L…\json-c -ljson-c -LC:\Qt\5.9.7\mingw53_32\lib C:\Qt\5.9.7\mingw53_32\lib\libQt5Guid.a C:\Qt\5.9.7\mingw53_32\lib\libQt5Cored.a
C:/Qt/Tools/mingw530_32/bin/…/lib/gcc/i686-w64-mingw32/5.3.0/…/…/…/…/i686-w64-mingw32/bin/ld.exe: cannot find -ljson-c
collect2.exe: error: ld returned 1 exit status
Makefile.Debug:73: recipe for target ‘debug\mypaint.dll’ failed
mingw32-make[3]: Leaving directory ‘E:/NOVOS/PENCIL/CandyFace-pencil-implement_mypaint/build-pencil2d-Desktop_Qt_5_9_7_MinGW_32bit-Debug/3rdlib/qtmypaint/libmypaint’
Makefile:36: recipe for target ‘debug’ failed
mingw32-make[2]: Leaving directory ‘E:/NOVOS/PENCIL/CandyFace-pencil-implement_mypaint/build-pencil2d-Desktop_Qt_5_9_7_MinGW_32bit-Debug/3rdlib/qtmypaint/libmypaint’
Makefile:85: recipe for target ‘sub-libmypaint-make_first-ordered’ failed
mingw32-make[1]: Leaving directory ‘E:/NOVOS/PENCIL/CandyFace-pencil-implement_mypaint/build-pencil2d-Desktop_Qt_5_9_7_MinGW_32bit-Debug/3rdlib/qtmypaint’
mingw32-make[3]: *** [debug\mypaint.dll] Error 1
mingw32-make[2]: *** [debug] Error 2
mingw32-make[1]: *** [sub-libmypaint-make_first-ordered] Error 2
Makefile:43: recipe for target ‘sub-3rdlib-qtmypaint-make_first-ordered’ failed
mingw32-make: *** [sub-3rdlib-qtmypaint-make_first-ordered] Error 2
02:34:32: The process “C:\Qt\Tools\mingw530_32\bin\mingw32-make.exe” exited with code 2.
Error while building/deploying project pencil2d (kit: Desktop Qt 5.9.7 MinGW 32bit)
When executing step “Make”
02:34:32: Elapsed time: 00:02.
I made what you have suggested above but without succeed.