这是因为它要求符号文件有一定的规则：
#!/bin/sh
mkdir tmp
dump_syms c++11 > tmp/c++11.sym
head -n1 tmp/c++11.sym
#todo:
mkdir -p ./symbols/c++11/6EDC6ACDB282125843FD59DA9C81BD830
mv tmp/c++11.sym ./symbols/c++11/6EDC6ACDB282125843FD59DA9C81BD830
rm -rf tmp
路径有要求，GUID来自 .so 文件的头部。为了方便，写个 python 脚本 gen_symbols.py 自动生成：
#!/usr/bin/python
import sys
import getopt
import os
import errno
from os.path import basename
def make_sure_path_exists(path):
try:
os.makedirs(path)
except OSError as exception:
if exception.errno != errno.EEXIST:
raise
def main(argv):
if len(sys.argv) < 2:
print ("Please input binary files.")
sys.exit(2)
for i in range(1,len(sys.argv)):
binary = sys.argv[i]
outputFile = basename(binary) + ".sym"
command = '{0} {1} > {2}'.format("dump_syms",binary,outputFile)
print ('--> Running {0}'.format(command) )
os.system(command)
symFile = open(outputFile, 'r')
firstLine = symFile.readline()
print ('First line {0}'.format(firstLine))
lineArguments = firstLine.split(' ')
print ('Magic file {0}'.format(lineArguments[-2]))
symbolsDir = ("symbols/" + basename(binary) + "/" +
lineArguments[-2] + "/")
make_sure_path_exists(symbolsDir)
os.rename(outputFile,symbolsDir + basename(outputFile))
if __name__ == "__main__":
main(sys.argv[1:])
./gen_symbols.py xx1.so xx2.so
这样就可以自动生成了。
参考：https://stackoverflow.com/questions/23537187/stackwalker-loads-all-symbol-files-but-still-doesnt-symbolicate-anything
有C++难题，加我！