Not able to debug shared dylib in mac os - c++

Question

i'm using ffmpeg (open source) compiled dylib in macos for my project. But not able to debug ffmpeg dll's src using lldb.
configure \
--prefix=$_outAbsPathDebug \
--extra-cflags="-I${_x264AbsPathDebug}/include" \
--extra-ldflags="-L${_x264AbsPathDebug}/lib" \
--enable-debug \
--disable-optimizations \
--enable-shared \
--enable-static \
--disable-ffplay \
--enable-ffprobe \
--enable-ffmpeg \
--enable-gpl \
--enable-libx264 \
--enable-avresample
compiling sample
g++ \
-std=c++17 \
-D__STDC_CONSTANT_MACROS \
-Wno-deprecated \
-o "sampleffmpeg" \
-I"./../../../../../../mod/out/FFmpeg/mac/debug/config/" \
-I"./../../../../../../mod/src/FFmpeg/" \
-I"./../../../../../../mod/src/FFmpeg/compat/atomics/mac32/" \
-g \
"sampleffmpeg.cpp" \
-L"./" \
-lavcodec \
-lavdevice \
-lavfilter \
-lavformat \
-lavutil \
-lpostproc \
-lswresample \
-lswscale
sampleffmpeg.cpp
#include <iostream>
extern "C" {
#include <libavformat/avformat.h>
#include <libavutil/imgutils.h>
#include <libswscale/swscale.h>
}
int main() {
// Register all codecs and formats
av_register_all();
return 0;
}
lldb not able to step in av_register_all
Process 5392 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 1.1
frame #0: 0x0000000100003f98 sampleffmpeg`main at sampleffmpeg.cpp:10:5
7
8 int main() {
9 // Register all codecs and formats
-> 10 av_register_all();
11
12 return 0;
13 }
Target 0: (sampleffmpeg) stopped.
(lldb) s
Process 5392 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = step in
frame #0: 0x0000000100003fa0 sampleffmpeg`main at sampleffmpeg.cpp:12:5
9 // Register all codecs and formats
10 av_register_all();
11
-> 12 return 0;
13 }
Target 0: (sampleffmpeg) stopped.