GFORTRAN error in makefile installation Post: 302911937

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Top Forums Shell Programming and Scripting GFORTRAN error in makefile installation Post 302911937 by Perderabo on Monday 4th of August 2014 04:43:02 PM

08-04-2014

Administrator Emeritus

I am not really familiar with modern fortran. But is not g++ a compiler for the C++ language? Maybe you should try a fortran compiler? To test my guess I wrote a little "hello world" program in fortran. This might be my first fortran program since the 1970's, so slide me some slack here. Wow, I see that I must start my statements in column 7 still! But anyway here is ....

Code:

$
$
$ cat ftest.f
       program HelloWorld
       write (*,*) "Hello, world!"
       end program HelloWorld

$
$
$ g++ ftest.f -o ftest
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64/crt1.o: In function `_start':
(.text+0x20): undefined reference to `main'
/tmp/cckZ95tO.o: In function `MAIN__':
ftest.f:(.text+0x1b): undefined reference to `_gfortran_set_std'
ftest.f:(.text+0x50): undefined reference to `_gfortran_st_write'
ftest.f:(.text+0x66): undefined reference to `_gfortran_transfer_character'
ftest.f:(.text+0x72): undefined reference to `_gfortran_st_write_done'
collect2: ld returned 1 exit status
$
$
$
$
$ gfortran ftest.f -o ftest
$ ./ftest
 Hello, world!
$
$

My little experiment suggests that my guess was right. Fortran code works well with the fortran compiler. But it doesn't really work with the C++ compiler. So I suggest that you switch to a fortran compiler.

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LEARN ABOUT DEBIAN

gcov2perl

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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