* Linking c++ and fortran
@ 2000-03-07 9:14 Peter_Hahne
2000-03-07 11:58 ` Martin v. Loewis
` (2 more replies)
0 siblings, 3 replies; 10+ messages in thread
From: Peter_Hahne @ 2000-03-07 9:14 UTC (permalink / raw)
To: gcc-help
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Hello
I´m trying to call a fortran routine from a c++ routine
using gcc resp. g77/g++ , but dont get it to work.
Can somebody tell me how to do it?
Best regards, Peter
I tried
g77 -o main main.cpp sub1.f -lstdc++
and get the linker error message
/tmp/ccK77Fls.o: In function `main':
/tmp/ccK77Fls.o(.text+0x26): undefined reference to `sub1_(void)'
collect2: ld returned 1 exit status
I am using
g77 version egcs-2.91.66 19990314 (egcs-1.1.2 release) (from FSF-g77 version
0.5.24-19981002)
The sourcefiles are main.cpp
#include "iostream.h"
int sub1_();
main()
{
cout << "main" << "\n";
sub1_();
}
and sub1.f
integer function sub1()
sub1=0
write (6,*) 'sub1'
return
end
----------------------------------------------------------------------
Dr.Peter Hahne, Zum Pitschgrund 7a, 64747 Breuberg Rai-Breitenbach,
Tel. +49 6165 912424, Fax +49 6165 912425, Mobile +49 171 5178749
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: Linking c++ and fortran
2000-03-07 9:14 Linking c++ and fortran Peter_Hahne
@ 2000-03-07 11:58 ` Martin v. Loewis
2000-03-07 13:38 ` Peter_Hahne
2000-04-01 0:00 ` Martin v. Loewis
2000-03-07 12:01 ` Alexandre Oliva
2000-04-01 0:00 ` Peter_Hahne
2 siblings, 2 replies; 10+ messages in thread
From: Martin v. Loewis @ 2000-03-07 11:58 UTC (permalink / raw)
To: Peter_Hahne; +Cc: gcc-help
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> I´m trying to call a fortran routine from a c++ routine
> using gcc resp. g77/g++ , but dont get it to work.
> Can somebody tell me how to do it?
You need to declare the external function as extern "C".
Martin
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: Linking c++ and fortran
2000-03-07 11:58 ` Martin v. Loewis
@ 2000-03-07 13:38 ` Peter_Hahne
2000-04-01 0:00 ` Peter_Hahne
2000-04-01 0:00 ` Martin v. Loewis
1 sibling, 1 reply; 10+ messages in thread
From: Peter_Hahne @ 2000-03-07 13:38 UTC (permalink / raw)
To: martin; +Cc: gcc-help
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Thanks a lot, that works
Martin v. Loewis schrieb:
> I´m trying to call a fortran routine from a c++ routine
> using gcc resp. g77/g++ , but dont get it to work.
> Can somebody tell me how to do it?
You need to declare the external function as extern "C".
Martin
----------------------------------------------------------------------
Dr.Peter Hahne, Zum Pitschgrund 7a, 64747 Breuberg Rai-Breitenbach,
Tel. +49 6165 912424, Fax +49 6165 912425, Mobile +49 171 5178749
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: Linking c++ and fortran
2000-03-07 13:38 ` Peter_Hahne
@ 2000-04-01 0:00 ` Peter_Hahne
0 siblings, 0 replies; 10+ messages in thread
From: Peter_Hahne @ 2000-04-01 0:00 UTC (permalink / raw)
To: martin; +Cc: gcc-help
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
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Thanks a lot, that works
Martin v. Loewis schrieb:
> I´m trying to call a fortran routine from a c++ routine
> using gcc resp. g77/g++ , but dont get it to work.
> Can somebody tell me how to do it?
You need to declare the external function as extern "C".
Martin
----------------------------------------------------------------------
Dr.Peter Hahne, Zum Pitschgrund 7a, 64747 Breuberg Rai-Breitenbach,
Tel. +49 6165 912424, Fax +49 6165 912425, Mobile +49 171 5178749
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: Linking c++ and fortran
2000-03-07 11:58 ` Martin v. Loewis
2000-03-07 13:38 ` Peter_Hahne
@ 2000-04-01 0:00 ` Martin v. Loewis
1 sibling, 0 replies; 10+ messages in thread
From: Martin v. Loewis @ 2000-04-01 0:00 UTC (permalink / raw)
To: Peter_Hahne; +Cc: gcc-help
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 217 bytes --]
> I´m trying to call a fortran routine from a c++ routine
> using gcc resp. g77/g++ , but dont get it to work.
> Can somebody tell me how to do it?
You need to declare the external function as extern "C".
Martin
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: Linking c++ and fortran
2000-03-07 9:14 Linking c++ and fortran Peter_Hahne
2000-03-07 11:58 ` Martin v. Loewis
@ 2000-03-07 12:01 ` Alexandre Oliva
2000-03-07 13:40 ` Peter_Hahne
2000-04-01 0:00 ` Alexandre Oliva
2000-04-01 0:00 ` Peter_Hahne
2 siblings, 2 replies; 10+ messages in thread
From: Alexandre Oliva @ 2000-03-07 12:01 UTC (permalink / raw)
To: Peter_Hahne; +Cc: gcc-help
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On Mar 7, 2000, Peter_Hahne@t-online.de (Peter_Hahne) wrote:
> I´m trying to call a fortran routine from a c++ routine
> int sub1_();
You should probably have declare it as `extern "C"', to avoid C++ name
mangling.
--
Alexandre Oliva http://www.ic.unicamp.br/~oliva/ Enjoy Guaraná
Cygnus Solutions, a Red Hat company aoliva@{redhat, cygnus}.com
Free Software Developer and Evangelist CS PhD student at IC-Unicamp
oliva@{lsd.ic.unicamp.br, gnu.org} Write to mailing lists, not to me
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: Linking c++ and fortran
2000-03-07 12:01 ` Alexandre Oliva
@ 2000-03-07 13:40 ` Peter_Hahne
2000-04-01 0:00 ` Peter_Hahne
2000-04-01 0:00 ` Alexandre Oliva
1 sibling, 1 reply; 10+ messages in thread
From: Peter_Hahne @ 2000-03-07 13:40 UTC (permalink / raw)
To: oliva; +Cc: gcc-help
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Thanks a lot, that works.
> I´m trying to call a fortran routine from a c++ routine
> int sub1_();
You should probably have declare it as `extern "C"', to avoid C++ name
mangling.
----------------------------------------------------------------------
Dr.Peter Hahne, Zum Pitschgrund 7a, 64747 Breuberg Rai-Breitenbach,
Tel. +49 6165 912424, Fax +49 6165 912425, Mobile +49 171 5178749
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: Linking c++ and fortran
2000-03-07 13:40 ` Peter_Hahne
@ 2000-04-01 0:00 ` Peter_Hahne
0 siblings, 0 replies; 10+ messages in thread
From: Peter_Hahne @ 2000-04-01 0:00 UTC (permalink / raw)
To: oliva; +Cc: gcc-help
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
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Thanks a lot, that works.
> I´m trying to call a fortran routine from a c++ routine
> int sub1_();
You should probably have declare it as `extern "C"', to avoid C++ name
mangling.
----------------------------------------------------------------------
Dr.Peter Hahne, Zum Pitschgrund 7a, 64747 Breuberg Rai-Breitenbach,
Tel. +49 6165 912424, Fax +49 6165 912425, Mobile +49 171 5178749
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: Linking c++ and fortran
2000-03-07 12:01 ` Alexandre Oliva
2000-03-07 13:40 ` Peter_Hahne
@ 2000-04-01 0:00 ` Alexandre Oliva
1 sibling, 0 replies; 10+ messages in thread
From: Alexandre Oliva @ 2000-04-01 0:00 UTC (permalink / raw)
To: Peter_Hahne; +Cc: gcc-help
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
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On Mar 7, 2000, Peter_Hahne@t-online.de (Peter_Hahne) wrote:
> I´m trying to call a fortran routine from a c++ routine
> int sub1_();
You should probably have declare it as `extern "C"', to avoid C++ name
mangling.
--
Alexandre Oliva http://www.ic.unicamp.br/~oliva/ Enjoy Guaraná
Cygnus Solutions, a Red Hat company aoliva@{redhat, cygnus}.com
Free Software Developer and Evangelist CS PhD student at IC-Unicamp
oliva@{lsd.ic.unicamp.br, gnu.org} Write to mailing lists, not to me
^ permalink raw reply [flat|nested] 10+ messages in thread
* Linking c++ and fortran
2000-03-07 9:14 Linking c++ and fortran Peter_Hahne
2000-03-07 11:58 ` Martin v. Loewis
2000-03-07 12:01 ` Alexandre Oliva
@ 2000-04-01 0:00 ` Peter_Hahne
2 siblings, 0 replies; 10+ messages in thread
From: Peter_Hahne @ 2000-04-01 0:00 UTC (permalink / raw)
To: gcc-help
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 931 bytes --]
Hello
I´m trying to call a fortran routine from a c++ routine
using gcc resp. g77/g++ , but dont get it to work.
Can somebody tell me how to do it?
Best regards, Peter
I tried
g77 -o main main.cpp sub1.f -lstdc++
and get the linker error message
/tmp/ccK77Fls.o: In function `main':
/tmp/ccK77Fls.o(.text+0x26): undefined reference to `sub1_(void)'
collect2: ld returned 1 exit status
I am using
g77 version egcs-2.91.66 19990314 (egcs-1.1.2 release) (from FSF-g77 version
0.5.24-19981002)
The sourcefiles are main.cpp
#include "iostream.h"
int sub1_();
main()
{
cout << "main" << "\n";
sub1_();
}
and sub1.f
integer function sub1()
sub1=0
write (6,*) 'sub1'
return
end
----------------------------------------------------------------------
Dr.Peter Hahne, Zum Pitschgrund 7a, 64747 Breuberg Rai-Breitenbach,
Tel. +49 6165 912424, Fax +49 6165 912425, Mobile +49 171 5178749
^ permalink raw reply [flat|nested] 10+ messages in thread
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Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2000-03-07 9:14 Linking c++ and fortran Peter_Hahne
2000-03-07 11:58 ` Martin v. Loewis
2000-03-07 13:38 ` Peter_Hahne
2000-04-01 0:00 ` Peter_Hahne
2000-04-01 0:00 ` Martin v. Loewis
2000-03-07 12:01 ` Alexandre Oliva
2000-03-07 13:40 ` Peter_Hahne
2000-04-01 0:00 ` Peter_Hahne
2000-04-01 0:00 ` Alexandre Oliva
2000-04-01 0:00 ` Peter_Hahne
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