android如何编译出带符号表的.so库
关于这个问题，其实编译器带-g就会有调试信息。这是gcc相关的。
默认其实android编译的就是带符号表的，只是在strip掉了。
例如下面的操作：
/$ find . | grep libext2_e2p.so
./obj/SHARED_LIBRARIES/libext2_e2p_intermediates/LINKED/libext2_e2p.so
./obj/lib/libext2_e2p.so
./symbols/system/lib64/libext2_e2p.so
./symbols/system/lib/libext2_e2p.so
./obj_arm/SHARED_LIBRARIES/libext2_e2p_intermediates/LINKED/libext2_e2p.so
./obj_arm/lib/libext2_e2p.so
./system/lib64/libext2_e2p.so
./system/lib/libext2_e2p.so
/$ ls -l ./obj/SHARED_LIBRARIES/libext2_e2p_intermediates/LINKED/libext2_e2p.so
-rwxrwxr-x 1 neil neil 109808 12月 19 21:20 ./obj/SHARED_LIBRARIES/libext2_e2p_intermediates/LINKED/libext2_e2p.so
/$ ls -l ./obj/lib/libext2_e2p.so
-rwxrwxr-x 1 neil neil 31448 12月 19 21:25 ./obj/lib/libext2_e2p.so
/$ ls -l ./symbols/system/lib64/libext2_e2p.so
-rwxrwxr-x 1 neil neil 109808 12月 19 21:24 ./symbols/system/lib64/libext2_e2p.so
/$ ls -l ./symbols/system/lib/libext2_e2p.so
-rwxrwxr-x 1 neil neil 86172 12月 19 21:20 ./symbols/system/lib/libext2_e2p.so
/$ ls -l ./system/lib64/libext2_e2p.so
-rwxrwxr-x 1 neil neil 31448 12月 19 21:27 ./system/lib64/libext2_e2p.so
/$ ls