How to debug simple C++ program with LLDB + arm64 M1?

Question

spmish OP

Created May ’21

Replies 1

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Here's a simple C++ program:

Code Block cpp#include <stdio.h>
int main() { 
  printf("Hello world\n"); 
  return 0; 
}

On my M1 Macbook air, I can compile, run, and debug this program successfully:

Code Block bash% clang++ hello.cpp -g
% ./a.out
Hello world
% lldb a.out
(lldb) target create "a.out"
Current executable set to '/Users/sam/build/a.out' (x86_64).
(lldb) run
Process 55681 launched: '/Users/sam/build/a.out' (x86_64)
Hello world
Process 55681 exited with status = 0 (0x00000000)

When adding -arch arm64, it builds and runs, as expected:

Code Block bash% clang++ hello.cpp -g -arch arm64
% ./a.out
Hello world

But debugging seems to fail:

Code Block bash% lldb a.out
(lldb) target create "a.out"
Current executable set to '/Users/sam/build/a.out' (arm64).
(lldb) run
error: process exited with status -1 (attach failed ((os/kern) invalid argument))

Is there anything special I need to do to get lldb to work with an executable compiled with -arch arm64?

Macbook Air (M1, 2020)
Big Sur 11.0.1

Code Block bash% clang++ --version
Apple clang version 12.0.0 (clang-1200.0.32.29)
Target: x86_64-apple-darwin20.1.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin

Code Block bash% lldb --version
lldb-1200.0.44.2
Apple Swift version 5.3.2 (swiftlang-1200.0.45 clang-1200.0.32.28)

Answered by spmish in 672971022

Oops, it appears to be related to using a Terminal that has been run with Rosetta!

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Answer 1

spmish OP

May ’21

Accepted Answer

Oops, it appears to be related to using a Terminal that has been run with Rosetta!

0