question：crash log only shows crash when call av_log, but don't show which function call av_log in backtrace. How to config Developer options in module-default.sh file?
问题：崩溃日志仅仅显示当调用av_log的时候崩溃，但是没有显示更上层的完整的调用栈（比如是谁调用av_log才导致crash）。如何在module-default.sh文件中配置开发选项才能显示完整的崩溃的调用栈信息？
附：module-default.sh
Developer options (useful when working on FFmpeg itself):
Android4MediaPlayer
commented
6 years ago
crash log:崩溃日志 12-05 10:53:05.911 12336-12336/? A/DEBUG: Revision: '0' 12-05 10:53:05.911 12336-12336/? A/DEBUG: ABI: 'arm' 12-05 10:53:05.911 12336-12336/? A/DEBUG: pid: 12230, tid: 12324, name: Thread-11 >>> com.cnc.mediaplayer.full <<< 12-05 10:53:05.911 12336-12336/? A/DEBUG: signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x6eb59f01 12-05 10:53:05.911 12336-12336/? A/DEBUG: r0 6eb59f01 r1 6eb59f01 r2 00000053 r3 00000007 12-05 10:53:05.911 12336-12336/? A/DEBUG: r4 ffffffff r5 00000002 r6 00000000 r7 6eb59f01 12-05 10:53:05.911 12336-12336/? A/DEBUG: r8 ffffffff r9 0000001c sl d0dfe048 fp cdf04e08 12-05 10:53:05.911 12336-12336/? A/DEBUG: ip 80000000 sp cdf04c08 lr ed8be859 pc ed887776 cpsr a00f0030 12-05 10:53:05.914 12336-12336/? A/DEBUG: backtrace: 12-05 10:53:05.914 12336-12336/? A/DEBUG: #00 pc 00018776 /system/lib/libc.so (strlen+21) 12-05 10:53:05.914 12336-12336/? A/DEBUG: #01 pc 0004f855 /system/lib/libc.so (__strlen_chk+4) 12-05 10:53:05.914 12336-12336/? A/DEBUG: #02 pc 0003ff2d /system/lib/libc.so (vfprintf+4508) 12-05 10:53:05.914 12336-12336/? A/DEBUG: #03 pc 00044b7f /system/lib/libc.so (vsnprintf+134) 12-05 10:53:05.914 12336-12336/? A/DEBUG: #04 pc 000056b9 /system/lib/liblog.so (android_log_vprint+40) 12-05 10:53:05.914 12336-12336/? A/DEBUG: #05 pc 0046f903 /data/app/com.cnc.mediaplayer.full-2/lib/arm/libijkffmpeg.so (av_log+42)
question：crash log only shows crash when call av_log, but don't show which function call av_log in backtrace. How to config Developer options in module-default.sh file? 问题：崩溃日志仅仅显示当调用av_log的时候崩溃，但是没有显示更上层的完整的调用栈（比如是谁调用av_log才导致crash）。如何在module-default.sh文件中配置开发选项才能显示完整的崩溃的调用栈信息？
附：module-default.sh
Developer options (useful when working on FFmpeg itself):
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-coverage"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-debug"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-debug=LEVEL"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-optimizations"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-extra-warnings"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-stripping"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --assert-level=level"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-memory-poisoning"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --valgrind=VALGRIND"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-ftrapv"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --samples=PATH"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-xmm-clobber-test"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-random"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-random"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --enable-random=LIST"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --disable-random=LIST"
export COMMON_FF_CFG_FLAGS="$COMMON_FF_CFG_FLAGS --random-seed=VALUE"