Difference between revisions of "Main Page/C Fortran"
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== PGI compiler name mangling convention == | == PGI compiler name mangling convention == | ||
| − | When programs are compiled using one of the PGI Fortran compilers on UNIX systems, an underscore is appended to Fortran global names (names of functions, subroutines and common blocks). This mechanism distinguishes Fortran name space from C/C++ name space. If you call a C/C++ function from Fortran, you should rename the C/C++ function by appending an underscore (or use C$PRAGMA C in the Fortran program, refer to Chapter 9, Optimization Directives and Pragmas, for details on C$PRAGMA C) If you call a Fortran function from C/C++, you should append an underscore to the Fortran function name in the calling program. | + | When programs are compiled using one of the PGI Fortran compilers on UNIX systems, an underscore is appended to Fortran global names (names of functions, subroutines and common blocks). |
| + | This mechanism distinguishes Fortran name space from C/C++ name space. | ||
| + | |||
| + | If you call a C/C++ function from Fortran, you should rename the C/C++ function by appending an underscore (or use C$PRAGMA C in the Fortran program, refer to Chapter 9, Optimization Directives and Pragmas, for details on C$PRAGMA C) | ||
| + | |||
| + | If you call a Fortran function from C/C++, you should append an underscore to the Fortran function name in the calling program. | ||
| + | |||
source: http://www.tacc.utexas.edu/services/userguides/pgi/pgiws_ug/pgi32u07.htm#Heading93 | source: http://www.tacc.utexas.edu/services/userguides/pgi/pgiws_ug/pgi32u07.htm#Heading93 | ||
Revision as of 12:47, 19 May 2011
PGI compiler name mangling convention
When programs are compiled using one of the PGI Fortran compilers on UNIX systems, an underscore is appended to Fortran global names (names of functions, subroutines and common blocks). This mechanism distinguishes Fortran name space from C/C++ name space.
If you call a C/C++ function from Fortran, you should rename the C/C++ function by appending an underscore (or use C$PRAGMA C in the Fortran program, refer to Chapter 9, Optimization Directives and Pragmas, for details on C$PRAGMA C)
If you call a Fortran function from C/C++, you should append an underscore to the Fortran function name in the calling program.
source: http://www.tacc.utexas.edu/services/userguides/pgi/pgiws_ug/pgi32u07.htm#Heading93
2.1- SUBROUTINE
For a Fortran CALL SUB the corresponding C routine has to be named:
SUB
all upper case on Cray with cft77 compiler
sub
all lower case on Apollo with ftn compiler case insensitive on IBM/370 and VMS
sub_
lower case with underscore added on all other system
