freetype library is not passed when linking

[tpgxyz]

System information (version)

• OpenCV => 3.2.0
• Operating System / Platform => Linux x86_64/i586/aarch64/armv7hl
• Compiler => LLVM/clang 4.0.1

Detailed description

Looks like -lfreetype is not passed when linking

make[2]: Entering directory '/builddir/build/BUILD/opencv-3.2.0/build'
[ 84%] Linking CXX executable ../../bin/cpp-example-videocapture_starter
cd /builddir/build/BUILD/opencv-3.2.0/build/samples/cpp && /usr/bin/cmake -E cmake_link_script CMakeFiles/example_videocapture_starter.dir/link.txt --verbose=1
/usr/bin/clang++ -Os -gdwarf-4 -Wstrict-aliasing=2 -pipe -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2 -fstack-protector --param=ssp-buffer-size=4 -fPIC -flto -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-unnamed-type-template-args -Wno-comment -fdiagnostics-show-option -Wno-long-long -pthread -Qunused-arguments -fomit-frame-pointer -ffast-math -msse -msse2 -mno-avx -msse3 -mno-ssse3 -mno-sse4.1 -mno-sse4.2 -ffunction-sections -fvisibility=hidden -fvisibility-inlines-hidden -fopenmp=libomp -Wno-unused-function -Wno-missing-declarations -Os -gdwarf-4 -Wstrict-aliasing=2 -pipe -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2 -fstack-protector --param=ssp-buffer-size=4 -fPIC -flto -DNDEBUG -Os -gdwarf-4 -Wstrict-aliasing=2 -pipe -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2 -fstack-protector --param=ssp-buffer-size=4 -fPIC -flto -Wl,-O2 -flto -rdynamic CMakeFiles/example_videocapture_starter.dir/videocapture_starter.cpp.o -o ../../bin/cpp-example-videocapture_starter -ldl -lm -lpthread -lrt -lGLU -lGL ../../lib/libopencv_stitching.so.3.2.0 ../../lib/libopencv_superres.so.3.2.0 ../../lib/libopencv_videostab.so.3.2.0 ../../lib/libopencv_aruco.so.3.2.0 ../../lib/libopencv_bgsegm.so.3.2.0 ../../lib/libopencv_bioinspired.so.3.2.0 ../../lib/libopencv_ccalib.so.3.2.0 ../../lib/libopencv_cvv.so.3.2.0 ../../lib/libopencv_dpm.so.3.2.0 ../../lib/libopencv_freetype.so.3.2.0 ../../lib/libopencv_fuzzy.so.3.2.0 ../../lib/libopencv_hdf.so.3.2.0 ../../lib/libopencv_line_descriptor.so.3.2.0 ../../lib/libopencv_optflow.so.3.2.0 ../../lib/libopencv_reg.so.3.2.0 ../../lib/libopencv_saliency.so.3.2.0 ../../lib/libopencv_stereo.so.3.2.0 ../../lib/libopencv_structured_light.so.3.2.0 ../../lib/libopencv_surface_matching.so.3.2.0 ../../lib/libopencv_tracking.so.3.2.0 ../../lib/libopencv_xfeatures2d.so.3.2.0 ../../lib/libopencv_ximgproc.so.3.2.0 ../../lib/libopencv_xobjdetect.so.3.2.0 ../../lib/libopencv_xphoto.so.3.2.0 ../../lib/libopencv_shape.so.3.2.0 ../../lib/libopencv_phase_unwrapping.so.3.2.0 ../../lib/libopencv_rgbd.so.3.2.0 ../../lib/libopencv_calib3d.so.3.2.0 ../../lib/libopencv_video.so.3.2.0 ../../lib/libopencv_datasets.so.3.2.0 ../../lib/libopencv_dnn.so.3.2.0 ../../lib/libopencv_face.so.3.2.0 ../../lib/libopencv_plot.so.3.2.0 ../../lib/libopencv_text.so.3.2.0 ../../lib/libopencv_features2d.so.3.2.0 ../../lib/libopencv_flann.so.3.2.0 ../../lib/libopencv_objdetect.so.3.2.0 ../../lib/libopencv_ml.so.3.2.0 ../../lib/libopencv_highgui.so.3.2.0 ../../lib/libopencv_videoio.so.3.2.0 ../../lib/libopencv_imgcodecs.so.3.2.0 ../../lib/libopencv_photo.so.3.2.0 ../../lib/libopencv_imgproc.so.3.2.0 ../../lib/libopencv_core.so.3.2.0
make[2]: Leaving directory '/builddir/build/BUILD/opencv-3.2.0/build'
../../lib/libopencv_freetype.so.3.2.0: error: undefined reference to 'FT_Init_FreeType'
../../lib/libopencv_freetype.so.3.2.0: error: undefined reference to 'hb_font_destroy'
../../lib/libopencv_freetype.so.3.2.0: error: undefined reference to 'FT_Done_Face'
../../lib/libopencv_freetype.so.3.2.0: error: undefined reference to 'FT_Done_FreeType'
../../lib/libopencv_freetype.so.3.2.0: error: undefined reference to 'FT_New_Face'
../../lib/libopencv_freetype.so.3.2.0: error: undefined reference to 'hb_ft_font_create'
../../lib/libopencv_freetype.so.3.2.0: error: undefined reference to 'FT_Set_Pixel_Sizes'
../../lib/libopencv_freetype.so.3.2.0: error: undefined reference to 'hb_buffer_create'
../../lib/libopencv_freetype.so.3.2.0: error: undefined reference to 'hb_buffer_guess_segment_properties'
../../lib/libopencv_freetype.so.3.2.0: error: undefined reference to 'hb_buffer_add_utf8'
../../lib/libopencv_freetype.so.3.2.0: error: undefined reference to 'hb_buffer_get_glyph_infos'
../../lib/libopencv_freetype.so.3.2.0: error: undefined reference to 'hb_shape'
../../lib/libopencv_freetype.so.3.2.0: error: undefined reference to 'FT_Load_Glyph'
../../lib/libopencv_freetype.so.3.2.0: error: undefined reference to 'FT_Outline_Transform'
../../lib/libopencv_freetype.so.3.2.0: error: undefined reference to 'FT_Outline_Translate'
../../lib/libopencv_freetype.so.3.2.0: error: undefined reference to 'FT_Outline_Decompose'
../../lib/libopencv_freetype.so.3.2.0: error: undefined reference to 'hb_buffer_destroy'
../../lib/libopencv_freetype.so.3.2.0: error: undefined reference to 'FT_Render_Glyph'
clang-4.0: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [samples/cpp/CMakeFiles/example_videocapture_starter.dir/build.make:144: bin/cpp-example-videocapture_starter] Error 1
make[1]: *** [CMakeFiles/Makefile2:14930: samples/cpp/CMakeFiles/example_videocapture_starter.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....

Steps to reproduce

Full logs can be found here
http://file-store.openmandriva.org/api/v1/file_stores/559fe362efa194b65106f38560d96038db76b96f.log?show=true

[alalek]

Try this: #926

[tpgxyz]

@alalek Thanks. Issue fixed.