[FWTools] FWTools3 Experiment

[Even Rouault]

>  > * Debian Lenny 32 bit : OK. I've noticed that it used an older
>  > installation of /usr/lib/ogdi/libvrf.so instead of the one in
>  > $FWTOOLS_ROOT/usr/lib/ogdi.
> 
> Hmm, I'm not sure why this is.
> 
> I will say that I noticed my local system versions of some packages
> like libsqlite.so were being used in preference to the ones in FWTools.
> I tracked this down to the rpath attribute in various built binaries.
> I've added a step to my preparation to strip out rpaths from binaries
> and shared libraries.  I documented this on my blog:
> 
>    http://fwarmerdam.blogspot.com/

Interesting reading. "man dlopen" on my Ubuntu 10.04 gives indeed the loading 
order you mention in your blog.

> 
> Perhaps that will also address the libvrt issue?

Unfortunately not. I've tracked down to OGDI source itself and hardcoded paths

In ogdi-3.2.0.beta2/ogdi/c-api/ecs_dyna.c :

if !defined(MODULES_PATH)
#define MODULES_PATH "/usr/lib/ogdi/"
#endif
  void *handle;

  handle = dlopen(libname,RTLD_LAZY);
  if (handle != NULL)
    return handle;

/* Even Rouault : here we would need something like */
/* this to search in the LD_LIBRARY_PATH before trying the */
/* hardcoded MODULES_PATH */
  if ((temp = (char *) malloc(strlen(libname)+7)) == NULL)
    return NULL;
  sprintf(temp,"lib%s.so",libname); 
  handle = dlopen(temp,RTLD_LAZY);
  free(temp);
  if (handle != NULL)
    return handle;
/* end of addition */

  if ((temp = (char *) malloc(strlen(MODULES_PATH)+strlen(libname)+1)) == 
NULL)
    return NULL;
  sprintf(temp,MODULES_PATH "%s",libname);
  handle = dlopen(temp,RTLD_LAZY);
  free(temp);
  if (handle != NULL)
    return handle;

  if ((temp = (char *) malloc(strlen(MODULES_PATH)+strlen(libname)+7)) == 
NULL)
    return NULL;
  sprintf(temp,MODULES_PATH "lib%s.so",libname); 
  handle = dlopen(temp,RTLD_LAZY);
  free(temp);

  if (handle == NULL) {
    /* Try with the .so extension */

    if ((temp = (char *) malloc(strlen(libname)+7)) == NULL)
      return NULL;
    strcpy(temp,"lib");
    strcat(temp,libname);
    strcat(temp,".so");

    handle = dlopen(temp,RTLD_LAZY);
#ifdef notdef
    printf( "dlopen(%s) error: %s\n", temp, dlerror() );
#endif
    free(temp);
  }
  return handle;



> 
> Today I also stripped out some stuff that did not seem necessary to
> make the whole package smaller.  Python distutils, some docs and the
> distributed .pyc files.  New packages at:
> 
>    http://home.gdal.org/fwtools/FWTools-linux-i686-3.0.2.tar.gz
>    http://home.gdal.org/fwtools/FWTools-linux-x86_64-3.0.2.tar.gz
> 
> I greatly appreciate the alpha testing.
> 
> Best regards,