运行C ++程序时出现GDB错误

Question

The list of files in my directory (which is /home/ayush/Desktop/xapian-patch/xapian/xapian-letor/bin) is

xapian-prepare-trainingfile.1  xapian-prepare-trainingfile.cc xapian-prepare-trainingfile  xapian-prepare-trainingfile.o 

I am able to run the command ./xapian-prepare-trainingfile --db=/home/ayush/Documents/data/db /home/ayush/Documents/data/query.txt /home/ayush/Documents/data/qrel.txt /home/ayush/Documents/data/sample3.txt

However When I try to run the same command through GDB

gdb --args xapian-prepare-trainingfile --db=/home/ayush/Documents/data/db /home/ayush/Documents/data/query.txt /home/ayush/Documents/data/qrel.txt /home/ayush/Documents/data/sample3.txt

i get the error

"/home/ayush/Desktop/xapian-patch/xapian/xapian-letor/bin/xapian-prepare-trainingfile": not in executable format: File format not recognized

I want to know how the run the c++ command that I am able to run without any problems through GDB

Answer 1

"/home/ayush/Desktop/xapian-patch/xapian/xapian-letor/bin/xapian-prepare-trainingfile": not in executable format: File format not recognized

The most likely reason for above error is that ./xapian-prepare-trainingfile is a shell script, not an executable file.

You can confirm this by running file xapian-prepare-trainingfile .

If it is a shell script, you'll need to run:

bash -x ./xapian-prepare-trainingfile ...

and figure out what actual executable it eventually invokes, and debug that .

Another way: make a copy of xapian-prepare-trainingfile , edit it, and insert gdb --args just before the script exec s the actual binary.