Dne 1.1.2017 v 19:45 Charles napsal(a):
On 01/01/2017 12:29 PM, Steve Myers wrote:
Due to circumstances I lost the build script I used to build the
shared libraries for my app. Is there a way a to get the
configuration used from shared libraries similar to the command line
ffmpeg? I only have libavcodec-57.so, libavformat-57.so, etc.
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No, but if using gcc it would look something like this
gcc -fPIC -shared -I[path] [files].c -o lib[name].so -l[other required
lib]
If you build it look for errors in compile "name.h" not found means
update include "-I" path
Unresolved symbols mean update linking options "-l"
ex: shared lib with ffmpeg would include something like this
-I/usr/include/ffmpeg
-lavformat -lavcodec -lavutil -lswscale -lavdevice"
Example:
g++ -g -std=c++0x -Wall -Wextra -shared -fPIC -DDEBUG
-DGL_GLEXT_PROTOTYPES -I/usr/include/libdrm -I/usr/include/ffmpeg
draw_inf.cpp draw_mbox.cpp sphere.cpp draw_cube.cpp util.cpp
AvEncoder.cpp ThreadBase.cpp Image.cpp -lavformat -lavcodec -lavutil
-lswscale -lavdevice -lGLEW -lGLU -lGL -lX11 -lm -lrt -o libmyutil.so
Thanks
cco
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you can use:
/**
* Return the libavformat build-time configuration.
*/
const char *avformat_configuration(void);
and it's sister from avcodec.
--
Regards,
Karel Vořechovský
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