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Operating Systems Linux Debian Application link error with gcov Post 302156942 by clho on Wednesday 9th of January 2008 04:26:20 PM
Old 01-09-2008
Application link error with gcov

Hi,

I'm trying gcov on my Debian VM.
gcov (GCC) 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)
Copyright (C) 2006 Free Software Foundation, Inc.

It work with example program, but I got link error in my application code.

C_FLAGS += -Wall -W -O0 -fprofile-arcs -ftest-coverage

Each class file has the same error:

fileMgr.o: In function `global constructors keyed to 0__ZN7FileMgrC2Ev':
fileMgr.cpp: (.text+0x254da): undefined reference to `__gcov_init'
fileMgr.o: (.data.rel+0x24): undefined reference to `__gcov_merge_add'
backupMgr.o: In function `global constructors keyed to 0__ZN9BackupMgrC2Ev':
backupMgr.cpp: (.text+0x10458): undefined reference to `__gcov_init'
backupMgr.o: (.data.rel+0x24): undefined reference to `__gcov_merge_add'
...
collect2: ld returned 1 exit status
make: *** [fileMgmt] Error 1

Did I missing something?

Thanks!
 

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GCOV2PERL(1p)						User Contributed Perl Documentation					     GCOV2PERL(1p)

NAME
gcov2perl - convert gcov files to Devel::Cover databases VERSION
version 0.89 SYNOPSIS
gcov2perl -h -i -v -db database gcov_files DESCRIPTION
Convert gcov files to Devel::Cover databases. OPTIONS
The following command line options are supported: -db database - specify the database to use -h -help - show help -i -info - show documentation -v -version - show version DETAILS
To obtain coverage of XS files they must first be compiled with the appropriate options. In a standard Makefile environment, such as that created by ExtUtils::MakeMaker, this can be accomplished with the command: HARNESS_PERL_SWITCHES=-MDevel::Cover make test CCFLAGS=-O0 -fprofile-arcs -ftest-coverage OTHERLDFLAGS=-fprofile-arcs -ftest-coverage If you have already built your object files it may be necessary to run make clean first, or to find some other way to ensure that they get rebuilt with the options gcov requires. Now the code coverage data has been collected "gcov" needs to be run: gcov Mylib.xs This will create one or more gcov files on which you can run "gcov2perl": gcov2perl Mylib.xs.gcov Finally, "cover" should be run as usual with any options required: cover If you are running everything with standard options, you can do all this with one command: cover -test EXIT STATUS
The following exit values are returned: 0 All files converted successfully >0 An error occurred. SEE ALSO
Devel::Cover BUGS
Huh? LICENCE
Copyright 2001-2012, Paul Johnson (paul@pjcj.net) This software is free. It is licensed under the same terms as Perl itself. The latest version of this software should be available from my homepage: http://www.pjcj.net perl v5.14.2 2012-06-15 GCOV2PERL(1p)
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