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Re: What is a good profiling tool ? - problem with gprof
- From: Tim Prince <n8tm at aol dot com>
- To: cygwin at cygwin dot com
- Date: Mon, 17 Jun 2013 14:06:54 -0400
- Subject: Re: What is a good profiling tool ? - problem with gprof
- References: <2CF6002E09D8F54E9839DA08786D3200958D7B7A at EX10-LIVE-MBN2 dot ad dot kent dot ac dot uk>
On 06/17/2013 12:19 PM, J.B.W.Webber wrote:
If the gprof section of binutils is properly built and installed, it
should satisfy the mcount reference.
It's a bit strange to make a .o with -g -pg together, particularly when
you don't link with the same options.
FWIW, latest version of Intel VTune works with cygwin builds with -g3
-gdwarf-2 (and of course PATH considerations).
Hi, I am trying to find in which function call the most time is being spent.
I am using gcc and trying to compile and link with -g and -pg.
i.e. for a trivial test :
$ cat helloworld.c
/* Hello World program */
$ gcc -g -pg -c helloworld.c
$ gcc -pg helloworld.o
helloworld.o: In function `main':
helloworld.c:6: undefined reference to `_mcount'
collect2: ld returned 1 exit status
Any ideas ? Am I missing a .h call ? Or do I need to link to something ?
I have just updated cygwin. I attach cygcheck.out
Or any suggestions for another profiling tool that actually reports times ?
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