Prevent Non-PIE errors in advance and check whether the app contains the PIE flag

// Howard 2013-07-19

// How do I check whether the app contains the PIE flag?
A: Use the otool that comes with xCode.

The otool program is in the Xcode. app/Contents/Developer/usr/bin directory,

Assume that xCode is placed in the application directory of the system. It is located in/Applications/Xcode. app/Contents/Developer/usr/bin.

(1) Use the terminal to enter the directory where otool is located:
Cd/Applications/Xcode. app/Contents/Developer/usr/bin

(2) copy the. app you compiled to this directory.

(3) run the./otool-hv xxx. app/xxx command to detect the vulnerability.

The. app you compile is actually a directory with the goal of detecting binary files that can be run under the. app directory.
Take hsf-_merge.app as an example,
Command:
./Otool-hv hsf-_merge.app/hsf-_merge
The test results are as follows: