massive warnings during running the build on GCC-10 #16458
Description
System information (version)
- OpenCV => 3.4, master
- Operating System / Platform => all
- Compiler => gcc-10
Detailed description
[ 30%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/matrix_iterator.cpp.o
cc1plus: warning: command-line option ‘-Wmissing-prototypes’ is valid for C/ObjC but not for C++
cc1plus: warning: command-line option ‘-Wstrict-prototypes’ is valid for C/ObjC but not for C++
[ 30%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/matrix_operations.cpp.o
cc1plus: warning: command-line option ‘-Wmissing-prototypes’ is valid for C/ObjC but not for C++
cc1plus: warning: command-line option ‘-Wstrict-prototypes’ is valid for C/ObjC but not for C++
[ 30%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/matrix_sparse.cpp.o
cc1plus: warning: command-line option ‘-Wmissing-prototypes’ is valid for C/ObjC but not for C++
cc1plus: warning: command-line option ‘-Wstrict-prototypes’ is valid for C/ObjC but not for C++
[ 30%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/matrix_wrap.cpp.o
cc1plus: warning: command-line option ‘-Wmissing-prototypes’ is valid for C/ObjC but not for C++
cc1plus: warning: command-line option ‘-Wstrict-prototypes’ is valid for C/ObjC but not for C++
[ 30%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/mean.dispatch.cpp.o
cc1plus: warning: command-line option ‘-Wmissing-prototypes’ is valid for C/ObjC but not for C++
cc1plus: warning: command-line option ‘-Wstrict-prototypes’ is valid for C/ObjC but not for C++
[ 30%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/merge.dispatch.cpp.o
cc1plus: warning: command-line option ‘-Wmissing-prototypes’ is valid for C/ObjC but not for C++
cc1plus: warning: command-line option ‘-Wstrict-prototypes’ is valid for C/ObjC but not for C++
[ 30%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/minmax.cpp.o
3rdparty warnings (C sources)
cc1plus: warning: command-line option ‘-Wno-missing-prototypes’ is valid for C/ObjC but not for C++
[ 8%] Building CXX object 3rdparty/openexr/CMakeFiles/IlmImf.dir/Half/half.cpp.o
cc1plus: warning: command-line option ‘-Wstrict-prototypes’ is valid for C/ObjC but not for C++
cc1plus: warning: command-line option ‘-Wno-missing-prototypes’ is valid for C/ObjC but not for C++
[ 8%] Building C object 3rdparty/libtiff/CMakeFiles/libtiff.dir/tif_dirwrite.c.o
[ 8%] Building C object 3rdparty/libjasper/CMakeFiles/libjasper.dir/jpc_enc.c.o
cc1: warning: command-line option ‘-Wsign-promo’ is valid for C++/ObjC++ but not for C
cc1: warning: command-line option ‘-Wsuggest-override’ is valid for C++/ObjC++ but not for C
cc1: warning: command-line option ‘-Wno-delete-non-virtual-dtor’ is valid for C++/ObjC++ but not for C
cc1: warning: command-line option ‘-fvisibility-inlines-hidden’ is valid for C++/ObjC++ but not for C
cc1: warning: command-line option ‘-Wsign-promo’ is valid for C++/ObjC++ but not for C
cc1: warning: command-line option ‘-Wsuggest-override’ is valid for C++/ObjC++ but not for C
cc1: warning: command-line option ‘-Wno-delete-non-virtual-dtor’ is valid for C++/ObjC++ but not for C
cc1: warning: command-line option ‘-fvisibility-inlines-hidden’ is valid for C++/ObjC++ but not for C
[ 8%] Building C object 3rdparty/libjpeg-turbo/CMakeFiles/libjpeg-turbo.dir/src/jdatasrc.c.o
cc1: warning: command-line option ‘-Wsign-promo’ is valid for C++/ObjC++ but not for C
cc1: warning: command-line option ‘-Wsuggest-override’ is valid for C++/ObjC++ but not for C
cc1: warning: command-line option ‘-Wno-delete-non-virtual-dtor’ is valid for C++/ObjC++ but not for C
cc1: warning: command-line option ‘-fvisibility-inlines-hidden’ is valid for C++/ObjC++ but not for C
[ 8%] Building C object 3rdparty/libjpeg-turbo/CMakeFiles/libjpeg-turbo.dir/src/jdcoefct.c.o
cc1: warning: command-line option ‘-Wsign-promo’ is valid for C++/ObjC++ but not for C
cc1: warning: command-line option ‘-Wsuggest-override’ is valid for C++/ObjC++ but not for C
cc1: warning: command-line option ‘-Wno-delete-non-virtual-dtor’ is valid for C++/ObjC++ but not for C
cc1: warning: command-line option ‘-fvisibility-inlines-hidden’ is valid for C++/ObjC++ but not for
Steps to reproduce
build OpenCV on GCC 10