[Mapserver-users] mapserv doesn't work

[Vincent Schut]

Chen,

The error you get is a very generic error generated by php I think. To find 
out more about what goes wrong, you should at least run mapserver from the 
command prompt, and prefereable thourgh a debugger.
To run it from the command prompt, type (in the dir where the mapserv 
executable is):
./mapserv "QUERY_STRING=map=/var/mapserver/mapfiles/province2.map&mode=map"
(of course fill in your own mapfile/path and eventual other parameters. I 
think you need to specify at least map and mode. This example prints the 
image data to stdout, so you will see your png or gif or whatever scrolling 
as ascii on you terminal :-)
But probably you will see an error message instead of image data.

If it is still very generic, like a segmentation fault, you should use a 
debugger.
To run mapserv from the debugger, do the following:
make sure you have gdb (the gnu debugger) and type:
gdb mapserv
run "QUERY_STRING=map=/var/mapserver/mapfiles/province2.map&mode=map"
and after the error, type:
backtrace
This will show you in which function mapserv (or a library) segfaulted.
Maybe than you will know what to do. Otherwise, send your experiences and the 
mapserv and  debugger output to this list and I'm sure you will get more 
help.

Cheers,
Vincent Schut.

On Friday 20 June 2003 09:12, Chen Fu wrote:
> Till£º
>    My linux box is base on redhat8. the make generate
> some warning but no error. the mapserv is 375445
> bytes. I think it is much smaller than the one i used
> in win2k. But i config it with gd lib only.
>    if i type "./mapserv" it will show
> "
> This script can only be used to decode form results
> and
> should be initiated as a CGI process via a httpd
> server.
> "
> Is it mean the file is a validate executable? shp2img
> generated in the same procession work very nice.
>
> I search the archive for that message before i post it
> here. But most i found is related to php or some other
> thing. Because i am a newbie in compiling mapserver in
> linux, so i select the cleanest way, use only gd lib.
> But still get into trouble, sigh...
>
>  --- Till Adams <adams at terrestris.de> µÄÕýÎÄ£º> Dear
> Cheng,
>
> > "premature end of script" is an error which occurs,
> > when the compile
> > process was broken up: so while compiling, the
> > "mapserv" was written but
> > not finished. Which linux system do you use? Did you
> > get an error
> > message when compiling? Try the mailing list archive
> > searching for
> > contributions fitting to your error message.
> >
> > Good luck,
> > Till
> >
> > Chen Fu schrieb:
> > > Hi!
> > > This is my first time to compile mapserver in
> >
> > linux.
> >
> > > But I use mapserver in win2k for a long time.
> > > First download gd-2.0.15, make and install it.
> > > Then i download mapserver4.0b, make it and copy
> > > mapserv to cgi-bin.
> > > But when i input http://localhost/cgi-bin/mapserv
> >
> > ,
> >
> > > the info in the brower is
> > > Server error!
> > >
> > > The server encountered an internal error and was
> > > unable to complete your request.
> > >
> > >     Error message:
> > > Premature end of script headers: mapserv
> > >
> > > I have tried shp2img, it work fine, and generate
> > > proper  image.
> > > Can you give me some suggestion?
> > >
> > >
> > > =====
> > > Remote Scensing Satellite Ground Station
> > > Chinese Academy of Science
>
> _________________________________________________________
>
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>
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>
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> > > Mapserver-users at lists.gis.umn.edu
>
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>
> > --
> >
> > ***** Treffen Sie uns auf der AGIT in Salzburg vom
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> >
> > -----
> >
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> > terrestris, Paulsen&Adams GbR
> > Siemensstr. 8 * 53121 Bonn
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> > info at terrestris.de * www.terrestris.de
>
> =====
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>
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-- 
______________________________________
Vincent Schut
Sarvision B.V.
Wageningen, The Netherlands
www.sarvision.com