Re: compiling esql/c code with c4gl?

Jonathan Leffler wrote: > > Art S. Kagel wrote: > > 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 > > language so except for the most trivial ESQL programs the answer was > > 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). ......Yeeeah, right! Keep taking those pills Jonathan. :-) Cheers, -- Mark. +----------------------------------------------------------+-----------+ |Mark D. Stock - Informix SA http://www.informix.com |//////// /| |mailto:mdstock@informix.com http://www.informix.com/idn |///// / //| |http://www.iiug.org +-----------------------------------+//// / ///| | Tel: +27 11 807 0313 |If it's slow, the users complain. |/// / ////| | Fax: +27 838250 2325 |If it's fast, the users keep quiet.|// / /////| |Cell: +27 83 250 2325 |Therefore, "No news: travels fast"!|/ ////////| +----------------------+-----------------------------------+-----------+