Hi,
On 04/12/2018 15:24, Mo Zhou wrote:
> Source: ffmpeg
> Version: 7:4.0.3-1
> Severity: important
>
> builddlog attached.
Relevant extract:
> check_func_headers opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc
> test_ld cc -lopencv_core -lopencv_imgproc
> test_cc
> BEGIN /tmp/ffconf.jas2uoC0/test.c
> 1 #include <opencv2/core/core_c.h>
> 2 #include <stdint.h>
> 3 long check_cvCreateImageHeader(void) { return (long) cvCreateImageHeader; }
> 4 int main(void) { int ret = 0;
> 5 ret |= ((intptr_t)check_cvCreateImageHeader) & 0xFFFF;
> 6 return ret; }
> END /tmp/ffconf.jas2uoC0/test.c
> gcc -Wdate-time -D_FORTIFY_SOURCE=2 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -DPIC -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -fno-strict-overflow -fstack-protector-all -fPIE -std=c11 -fomit-frame-pointer -fPIC -pthread -I/usr/include/p11-kit-1 -I/usr/include/lilv-0 -I/usr/include/sratom-0 -I/usr/include/sord-0 -I/usr/include/serd-0 -I/usr/include/harfbuzz -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -I/usr/include/uuid -I/usr/include/fribidi -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/libxml2 -I/usr/include/uuid -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/bs2b -I/usr/include/libdrm -I/usr/include/uuid -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/fribidi -c -o /tmp/ffconf.jas2uoC0/test.o /tmp/ffconf.jas2uoC0/test.c
> In file included from /usr/include/opencv2/core/core_c.h:48,
> from /tmp/ffconf.jas2uoC0/test.c:1:
> /usr/include/opencv2/core/types_c.h: In function 'cvIplImage':
> /usr/include/opencv2/core/types_c.h:370:12: error: incompatible types when returning type 'int' but 'IplImage' {aka 'struct _IplImage'} was expected
> return _IplImage();
> ^~~~~~~~~~~
> ERROR: libopencv not found
> make[1]: *** [debian/rules:214: override_dh_auto_configure] Error 1
Simply trying to compile the above header with a C compiler fails:
> $ gcc -include /usr/include/opencv2/core/core_c.h -x c - < /dev/null
> In file included from /usr/include/opencv2/core/core_c.h:48,
> from <command-line>:32:
> /usr/include/opencv2/core/types_c.h: In function ‘cvIplImage’:
> /usr/include/opencv2/core/types_c.h:370:12: error: incompatible types when returning type ‘int’ but ‘IplImage’ {aka ‘struct _IplImage’} was expected
> return _IplImage();
> ^~~~~~~~~~~
So it looks like the entire C API is bust in 3.4.4.
I seem some bugs and upstream ffmpeg discussion related to this:
https://github.com/opencv/opencv/issues/10963
https://ffmpeg.org/pipermail/ffmpeg-devel/2018-March/226872.html
It seems the conclusion is that the OpenCV C API is dead and FFmpeg
should drop all support for it. That seems the likely course of action
for the Debian package unless someone can think of anything better.
James
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