gnuplot-beta

gnuplot library dependancies

[Mark S. <msp...@ho...>]

How can we get gnuplot to look for it's libraries in a place other than the 
default?  We have libpng.a(png.o) in /usr/local/lib and libpng.a(libpng.so.2) 
in /opt/freeware/lib.  We tried the with-png=/opt/freeware/lib thing. No luck.  
There doesn't seem to be a command line option.  Do we have to change the 
Makefile?

Re: gnuplot library dependancies

[Lars H. <lhe...@us...>]

Mark Spanglet writes:
> How can we get gnuplot to look for it's libraries in a place other than=
 the=20
> default?  We have libpng.a(png.o) in /usr/local/lib and libpng.a(libpng=
.so.2)=20
> in /opt/freeware/lib.  We tried the with-png=3D/opt/freeware/lib thing.=
 No luck.
> There doesn't seem to be a command line option.  Do we have to change t=
he=20
> Makefile?

 There cannot be a command line option, because the shared libraries are
 loaded before the program itself starts.

 man ld.so
...
       ld.so, ld-linux.so* - dynamic linker/loader

DESCRIPTION
       ld.so loads the shared libraries needed by a program, pre=AD
       pares the program  to  run,  and  then  runs  it.   Unless
...

 If configure fails to find libraries, config.log will tell you why.

Re: gnuplot library dependancies

[Hans-Bernhard B. <br...@ph...>]

On Mon, 21 Jun 2004, Mark Spanglet wrote:

> How can we get gnuplot to look for it's libraries in a place other than
> the default?  We have libpng.a(png.o) in /usr/local/lib and
> libpng.a(libpng.so.2)  in /opt/freeware/lib.  We tried the
> with-png=/opt/freeware/lib thing. No luck.  

Note: that should be --with-png=... (note the double dash in the front).

Please be more specific: how *exactly* did it fail?  Please report what
config.log had to say about its attempts to find libpng.  What platform
did you do this on?  Does it need special linker flags (like -rpath or -R)
to allow the dynamic linker to find things in non-standard places?

-- 
Hans-Bernhard Broeker (br...@ph...)
Even if all the snow were burnt, ashes would remain.

Re: gnuplot library dependancies

[Mark S. <msp...@ho...>]

Hans-Bernhard Broeker <broeker <at> physik.rwth-aachen.de> writes:

We kind of figured it out .  We just changed LDFLAGS to point to the right 
directory.

Thanks for the help.

Mark