capturing compile errors

This is for lazy people. Sometime when you compile your c/c++ program, you may get tons of errors, especially when you miss some include files or just start a new program. In this case the error messages just fly away quickly, and you get totally lost. Well, you may increase your buffer, you may redirect your output… but for people who are lazy like me, you want a script.

This script starts your make process thru open3, capturing all compiling errors, and dumping them to both screen and a file called error_log. If the error log is short, you can just view it on screen, otherwise vi the error_log.

#!/usr/bin/perl  
use IPC::Open3;
use strict;
use warnings;

my $pid = open3(\*WRITER, \*READER, \*ERROR, "make");
open(ERROR_LOG, ">", "error_log");
while (my $line = <ERROR>) {
    print $line;
    print ERROR_LOG $line;
}
close(ERROR_LOG);
waitpid($pid, 0);
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Re: capturing compile errors by Roger (Parson) on Nov 05, 2003 at 02:22 UTC
Nice solution, but I will get lazier by just doing the following - `make 2>&1 \| tee ./compile.log` [download] or write a script called 'go' - `#!/usr/bin/bash make 2>&1 \| tee ./compile.log` [download] And when I want to compile the program again, I just say 'go'.	[reply] [d/l] [select]
Re: capturing compile errors (with script(1)) by grinder (Bishop) on Nov 05, 2003 at 07:25 UTC
`man script` script makes a record of everything printed on your screen. The record is written to filename. If no file name is given, the record is saved in the file typescript. `:-)`	[reply]