[fpc-pascal] CGI under Linux using FCL-Web

[michael.vancanneyt at wisa.be]

On Wed, 4 Apr 2012, Christian Kranich wrote:

> Hello All,
>
> I just started to use FPC in  a project requiring a Webinterface.
> When porting the Lazarus/Win32 fpc-web examples (worked fine)
> to X86/Linux(Ubuntu) and Arm-Linux, I started to struggle.
>
> Under Linux, the cgi program terminates w/o any output and w/o any
> errormessages. So Apache complains about premature page end.
>
> => Is there anything special to consider when using fcl-web under
> Linux?

Yes.

* Do not use the crt, video or keyboard units.
* Do not attempt I/O to standard input/output/error.

> => The bread and butter cgi example (mini.pas) did run, but I like the
> concept of FCL-Web offering scalability between CGI, FastCGI, Apache Module
> and do not want to reinvent the wheel...
>
> Currently I started copying the fcl-web sources to project folder and pinpointing
> with writelns to crosscheck what is running and what is not.

Check the error log of apache. 
It will contain the error output of the CGI script.

Michael.