lldb cannot lookup symbol in imported dylib
Multi tool use
Clash Royale CLAN TAG#URR8PPPlldb cannot lookup symbol in imported dylib
I am debugging a C program on arm64 with lldb and in order to implement my own debugging function I wrote a standalone debug helper program, compiled it as a dylib and imported it into lldb by using:
(lldb) target modules add debugHelper.dylib
(lldb) target modules add debugHelper.dylib
However when I call the function declared in the dylib, lldb errors:
(lldb) expression debugPrint()
error: Couldn't lookup symbols:
_debugPrint
If I type in a random function name (e.g. foo):
(lldb) expression foo()
error: use of undeclared identifier 'foo'
, which makes me believe importing the dylib is indeed successful, since debugPrint is not an undeclared identifier.
debugPrint
undeclared identifier
// debugHelper.c
#include <stdio.h>
int debugPrint() {
printf("%sn", "Debug info printed! n");
return 0;
}
debugHelper.dylib is compiled with:
$ xcrun --sdk iphoneos cc debugHelper.c -o debugHelper.dylib -dynamiclib -arch arm64 -g
I also verified with nm that debugHelper.dylib does have the _debugPrint symbol:
nm
_debugPrint
$ nm debugHelper.dylib
0000000000007f2c T _debugPrint
U _printf
U dyld_stub_binder
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