Hi Nobuhiro, the configure script tries to link a small test application using the opencv opencv/cv.h and sees if it can resolve the symbol cvCreateImageHeader. The necessary libraries are resolved using the pkg-config .pc file that is provided by the pkg-config file.
Are you sure that the opencv 2.4 .pc file is working correctly? Can you please provide me with the output of pkg-config --cflags --libs libopencv when opencv 2.4 is installed? I would like to compare it to a system with opencv 2.3 installed. The logfile does indicate some linking errors, and we need to figure out what is going wrong here. On Thu, Sep 5, 2013 at 6:12 AM, Nobuhiro Iwamatsu <iwama...@nigauri.org> wrote: > Package: libav > Version: 9.8-2 > Severity: wishlist > > Dear Maintainer, > > I will update opencv 2.3 to 2.4. > I checked building libav package with opencv 2.4, and this FTBFS. > > ---- > cd debian-static && CFLAGS="-fstack-protector > --param=ssp-buffer-size=4 -Wformat -Werror=format-security" > CPPFLAGS="-D_FORTIFY_SOURCE=2" LDFLAGS="-Wl,-z,relro" > /home/iwamatsu/work/libav/libav-9.8/configure \ > --arch='amd64' --enable-pthreads --enable-runtime-cpudetect > --extra-version='6:9.8-2' --libdir=/usr/lib/x86_64-linux-gnu > --prefix=/usr --enable-bzlib --enable-libdc1394 > --enable-libfreetype --enable-frei0r --enable-gnutls > --enable-libgsm --enable-libmp3lame --enable-librtmp > --enable-libopencv --enable-libopenjpeg --enable-libopus > --enable-libpulse --enable-libschroedinger --enable-libspeex > --enable-libtheora --enable-vaapi --enable-vdpau --enable-libvorbis > --enable-libvpx --enable-zlib --enable-gpl --enable-swscale > --enable-libcdio --enable-x11grab --enable-libx264 > --enable-libxvid > ERROR: opencv not found > > If you think configure made a mistake, make sure you are using the latest > version from Git. If the latest version fails, report the problem to the > libav-u...@libav.org mailing list or IRC #libav on irc.freenode.net. > Include the log file "config.log" produced by configure as this will help > solving the problem. > make: *** [configure-stamp-static] Error 1 > ---- > > config.log: > ---- > BEGIN /tmp/ffconf.6ofvOVZa.c > 1 #include <opencv/cv.h> > 2 long check_cvCreateImageHeader(void) { return (long) > cvCreateImageHeader; } > 3 int main(void) { return 0; } > END /tmp/ffconf.6ofvOVZa.c > gcc -D_FORTIFY_SOURCE=2 -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 > -D_LARGEFILE_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 > -fstack-protector --param=ssp-buffer-size=4 -Wformat > -Werror=format-security -std=c99 -fomit-frame-pointer -pthread > -I/usr/include/p11-kit-1 -I/usr/include/freetype2 > -I/usr/include/opencv /usr/lib/x86_64-linux-gnu/libopencv_calib3d.so > /usr/lib/x86_64-linux-gnu/libopencv_contrib.so > /usr/lib/x86_64-linux-gnu/libopencv_core.so > /usr/lib/x86_64-linux-gnu/libopencv_features2d.so > /usr/lib/x86_64-linux-gnu/libopencv_flann.so > /usr/lib/x86_64-linux-gnu/libopencv_gpu.so > /usr/lib/x86_64-linux-gnu/libopencv_highgui.so > /usr/lib/x86_64-linux-gnu/libopencv_imgproc.so > /usr/lib/x86_64-linux-gnu/libopencv_legacy.so > /usr/lib/x86_64-linux-gnu/libopencv_ml.so > /usr/lib/x86_64-linux-gnu/libopencv_objdetect.so > /usr/lib/x86_64-linux-gnu/libopencv_photo.so > /usr/lib/x86_64-linux-gnu/libopencv_stitching.so > /usr/lib/x86_64-linux-gnu/libopencv_superres.so > /usr/lib/x86_64-linux-gnu/libopencv_ts.so > /usr/lib/x86_64-linux-gnu/libopencv_video.so > /usr/lib/x86_64-linux-gnu/libopencv_videostab.so -c -o > /tmp/ffconf.EAMsyRqL.o /tmp/ffconf.6ofvOVZa.c > gcc: warning: /usr/lib/x86_64-linux-gnu/libopencv_calib3d.so: linker > input file unused because linking not done > gcc: warning: /usr/lib/x86_64-linux-gnu/libopencv_contrib.so: linker > input file unused because linking not done > gcc: warning: /usr/lib/x86_64-linux-gnu/libopencv_core.so: linker > input file unused because linking not done > gcc: warning: /usr/lib/x86_64-linux-gnu/libopencv_features2d.so: > linker input file unused because linking not done > gcc: warning: /usr/lib/x86_64-linux-gnu/libopencv_flann.so: linker > input file unused because linking not done > gcc: warning: /usr/lib/x86_64-linux-gnu/libopencv_gpu.so: linker input > file unused because linking not done > gcc: warning: /usr/lib/x86_64-linux-gnu/libopencv_highgui.so: linker > input file unused because linking not done > gcc: warning: /usr/lib/x86_64-linux-gnu/libopencv_imgproc.so: linker > input file unused because linking not done > gcc: warning: /usr/lib/x86_64-linux-gnu/libopencv_legacy.so: linker > input file unused because linking not done > gcc: warning: /usr/lib/x86_64-linux-gnu/libopencv_ml.so: linker input > file unused because linking not done > gcc: warning: /usr/lib/x86_64-linux-gnu/libopencv_objdetect.so: linker > input file unused because linking not done > gcc: warning: /usr/lib/x86_64-linux-gnu/libopencv_photo.so: linker > input file unused because linking not done > gcc: warning: /usr/lib/x86_64-linux-gnu/libopencv_stitching.so: linker > input file unused because linking not done > gcc: warning: /usr/lib/x86_64-linux-gnu/libopencv_superres.so: linker > input file unused because linking not done > gcc: warning: /usr/lib/x86_64-linux-gnu/libopencv_ts.so: linker input > file unused because linking not done > gcc: warning: /usr/lib/x86_64-linux-gnu/libopencv_video.so: linker > input file unused because linking not done > gcc: warning: /usr/lib/x86_64-linux-gnu/libopencv_videostab.so: linker > input file unused because linking not done > gcc -Wl,-z,relro -Wl,--as-needed -I/usr/include/opencv > /usr/lib/x86_64-linux-gnu/libopencv_calib3d.so > /usr/lib/x86_64-linux-gnu/libopencv_contrib.so > /usr/lib/x86_64-linux-gnu/libopencv_core.so > /usr/lib/x86_64-linux-gnu/libopencv_features2d.so > /usr/lib/x86_64-linux-gnu/libopencv_flann.so > /usr/lib/x86_64-linux-gnu/libopencv_gpu.so > /usr/lib/x86_64-linux-gnu/libopencv_highgui.so > /usr/lib/x86_64-linux-gnu/libopencv_imgproc.so > /usr/lib/x86_64-linux-gnu/libopencv_legacy.so > /usr/lib/x86_64-linux-gnu/libopencv_ml.so > /usr/lib/x86_64-linux-gnu/libopencv_objdetect.so > /usr/lib/x86_64-linux-gnu/libopencv_photo.so > /usr/lib/x86_64-linux-gnu/libopencv_stitching.so > /usr/lib/x86_64-linux-gnu/libopencv_superres.so > /usr/lib/x86_64-linux-gnu/libopencv_ts.so > /usr/lib/x86_64-linux-gnu/libopencv_video.so > /usr/lib/x86_64-linux-gnu/libopencv_videostab.so -o > /tmp/ffconf.Isuhq3sA /tmp/ffconf.EAMsyRqL.o -lmp3lame -lgsm -lfreetype > -lgnutls -lva -lm -pthread -lbz2 -lz > /tmp/ffconf.EAMsyRqL.o: In function `cvDecRefData': > ffconf.6ofvOVZa.c:(.text+0xb70): undefined reference to `cvFree_' > ffconf.6ofvOVZa.c:(.text+0xc07): undefined reference to `cvFree_' > /tmp/ffconf.EAMsyRqL.o: In function `cvGetRow': > ffconf.6ofvOVZa.c:(.text+0xd35): undefined reference to `cvGetRows' > /tmp/ffconf.EAMsyRqL.o: In function `cvGetCol': > ffconf.6ofvOVZa.c:(.text+0xd69): undefined reference to `cvGetCols' > /tmp/ffconf.EAMsyRqL.o: In function `cvReleaseMatND': > ffconf.6ofvOVZa.c:(.text+0xd84): undefined reference to `cvReleaseMat' > /tmp/ffconf.EAMsyRqL.o: In function `cvSubS': > ffconf.6ofvOVZa.c:(.text+0xf07): undefined reference to `cvAddS' > /tmp/ffconf.EAMsyRqL.o: In function `cvCloneSeq': > ffconf.6ofvOVZa.c:(.text+0xf41): undefined reference to `cvSeqSlice' > /tmp/ffconf.EAMsyRqL.o: In function `cvSetNew': > ffconf.6ofvOVZa.c:(.text+0xfb9): undefined reference to `cvSetAdd' > /tmp/ffconf.EAMsyRqL.o: In function `cvGetSetElem': > ffconf.6ofvOVZa.c:(.text+0x106f): undefined reference to `cvGetSeqElem' > /tmp/ffconf.EAMsyRqL.o: In function `cvEllipseBox': > ffconf.6ofvOVZa.c:(.text+0x1184): undefined reference to `cvEllipse' > /tmp/ffconf.EAMsyRqL.o: In function `cvFont': > ffconf.6ofvOVZa.c:(.text+0x11d7): undefined reference to `cvInitFont' > /tmp/ffconf.EAMsyRqL.o: In function `cvReadIntByName': > ffconf.6ofvOVZa.c:(.text+0x12ed): undefined reference to `cvGetFileNodeByName' > /tmp/ffconf.EAMsyRqL.o: In function `cvReadRealByName': > ffconf.6ofvOVZa.c:(.text+0x13a5): undefined reference to `cvGetFileNodeByName' > /tmp/ffconf.EAMsyRqL.o: In function `cvReadStringByName': > ffconf.6ofvOVZa.c:(.text+0x1445): undefined reference to `cvGetFileNodeByName' > /tmp/ffconf.EAMsyRqL.o: In function `cvReadByName': > ffconf.6ofvOVZa.c:(.text+0x148a): undefined reference to `cvGetFileNodeByName' > ffconf.6ofvOVZa.c:(.text+0x14a1): undefined reference to `cvRead' > /tmp/ffconf.EAMsyRqL.o: In function `cvContourPerimeter': > ffconf.6ofvOVZa.c:(.text+0x14d6): undefined reference to `cvArcLength' > /tmp/ffconf.EAMsyRqL.o: In function `cvCalcHist': > ffconf.6ofvOVZa.c:(.text+0x151d): undefined reference to `cvCalcArrHist' > /tmp/ffconf.EAMsyRqL.o: In function `check_cvCreateImageHeader': > ffconf.6ofvOVZa.c:(.text+0x162f): undefined reference to `cvCreateImageHeader' > collect2: error: ld returned 1 exit status > ERROR: opencv not found > ---- > > I attached full build log. > Could you check your package? > > Beste regards, > Nobuhiro > > -- System Information: > Debian Release: jessie/sid > APT prefers unstable > APT policy: (500, 'unstable'), (1, 'experimental') > Architecture: amd64 (x86_64) > > Kernel: Linux 3.10-2-amd64 (SMP w/2 CPU cores) > Locale: LANG=ja_JP.UTF-8, LC_CTYPE=ja_JP.UTF-8 (charmap=UTF-8) > Shell: /bin/sh linked to /bin/dash > > > -- > Nobuhiro Iwamatsu > iwamatsu at {nigauri.org / debian.org} > GPG ID: 40AD1FA6 > > _______________________________________________ > pkg-multimedia-maintainers mailing list > pkg-multimedia-maintain...@lists.alioth.debian.org > http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/pkg-multimedia-maintainers -- regards, Reinhard -- To UNSUBSCRIBE, email to 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