compiling esql/c code with c4gl?
Walter Haslbeck
I want to install php3 with informix support on a SCO OpenServer
machine. Unfortunately on this machine is no escl/c compiler,
only a 4gl compiler. (And there is no budget for a esql/c compiler)
As far as I know, the 4gl compiler creates first a .ec file from
the 4gl file, then a .c file and finally a object file.
So I think it must be possible to use c4gl to compile esql sources.
But how?
Walter
--
Walter Haslbeck <w...@sonic.ods.de>
Eduard Rappa
As I remember (I don't work with Informix now), c4gl is a script,
not executable. You can open it in editor and find exact name
of that compiler. Informix has 2 separate programs for 4gl->ec
and ec->c conversion. Sorry, but I don't remember those names...
I hope it helps.
Eduard
Art S. Kagel
>
> Hello,
>
> I want to install php3 with informix support on a SCO OpenServer
> machine. Unfortunately on this machine is no escl/c compiler,
> only a 4gl compiler. (And there is no budget for a esql/c compiler)
>
> As far as I know, the 4gl compiler creates first a .ec file from
> the 4gl file, then a .c file and finally a object file.
>
> So I think it must be possible to use c4gl to compile esql sources.
The definitive answer is: it depends! I4gl versions 7.20 and later use
the same ESQL parser as ESQL/C does and so the answer is YES. Versions
before that (ie 6.xx, 4.xx) had an independent ESQL/C parser that was
not only different but supported an irregular subset of the language so
excpet for the most trivial ESQL programs the answer was usually NO.
Art S. Kagel
Jonathan Leffler
> Walter Haslbeck wrote:
> > I want to install php3 with informix support on a SCO OpenServer
> > machine. Unfortunately on this machine is no escl/c compiler,
> > only a 4gl compiler. (And there is no budget for a esql/c compiler)
> >
> > As far as I know, the 4gl compiler creates first a .ec file from
> > the 4gl file, then a .c file and finally a object file.
> >
> > So I think it must be possible to use c4gl to compile esql sources.
>
> The definitive answer is: it depends! I4gl versions 7.20 and later
> use the same ESQL parser as ESQL/C does and so the answer is YES.
> Versions before that (ie 6.xx, 4.xx) had an independent ESQL/C parser
> that was not only different but supported an irregular subset of the
> usually NO.
Not strictly true. Prior to version 4.12/6.00, the ESQL/C compiler
with I4GL actually understood a superset of the corresponding ESQL/C
language -- it also understood the I4GL extensions now handled by
the Phase 2 compiler which converts a .4ec file into a .ec file. So
you could compile any .ec file which the real ESQL/C compiler would
handle with the I4GL version, and you'd get the same result.
After 4.12/6.00, the I4GL Phase 2 compiler converted only the I4GL
extensions into C code and left the pure ESQL/C code to be converted
by the real ESQL/C compiler -- which was the 4.12 compiler in the
4.x code stream and 6.00 in the 6.0x code stream, and the 7.24 compiler
in the 7.2x code stream. So, again, you have always been able to
compile ESQL/C programs with the I4GL compiler providing that the
ESQL/C would be accepted by the corresponding ESQL/C compiler.
What would not work is compiling 5.0x ESQL/C with the 4.x I4GL compiler,
or compiling 7.x ESQL/C with the 6.x I4GL compiler (where I mean that
the ESQL/C code used features only found in 5.0x ESQL/C which would
not, therefore, be acceptable to the 4.12 ESQL/C compiler, or the
ESQL/C code used features found only in 7.x ESQL/C which would not,
therefore, be acceptable to the 6.00 ESQL/C compiler).
--
Jonathan Leffler (jlef...@informix.com, jlef...@earthlink.net)
Guardian of DBD::Informix v0.60 -- see http://www.perl.com/CPAN
#include <disclaimer.h>
Art S. Kagel
Thanks for clearing that up and it explains all of the problems I have
had over the years compiling ESQL/C w/ I4GL.
Art S. Kagel
Private to Jonathan: I really did enjoy this. Weird huh?