Re: [Plplot-devel] Known issues in CVS which should be dealt withbefore release

[Arjen M. <arj...@wl...>]

"Alan W. Irwin" wrote:
> 
> On 2004-01-06 16:54-0800 Alan W. Irwin wrote:
> 
> > * fortran single precision.... (I plan to do this tomorrow)
> 
> Actually, I finished this tonight.  configure --without-double turned up one
> C++ example compile problem under these conditions (which shows how little
> we use this single-precision option any more)

I have a real need for it though ;)

As for the underscore problem:

I know that Burkhard Burow who developed the tool "cfortran.h" ran into
this
same problem (it seems to originate with f2c, a FORTRAN 77 to C
translation program).
His recommendation is to use the C side of the interface to solve the
issue 
(it is well beyond the capabilities of C preprocessors). So you need to
define
either a macro with the trailing double underscores or to define an
extra 
C routine which just calls the version with a single one ...

Given the current set-up (Fortran programs call stubs to the actual C
routines)
it should be simple to solve this:

for these compilers:
#define FNAMEU(x,y) y##__ 

otherwise:
#define FNAMEU(x,y) y##_

This introduces an extra STUB_LINKAGE case, but it keeps the Fortran
names
identical to the C ones.

Regards,

Arjen