[GRASS-user] r.patch: GRASS-6.5svn

Glynn Clements glynn at gclements.plus.com
Sun Jan 24 02:43:22 EST 2010

Rich Shepard wrote:

> > 2. Can you re-compile lib/gis and check that the compilation commands
> > include the flag -D_FILE_OFFSET_BITS=64.
>    lib/gis/Makefile contains:
> #compile if LFS Large File Support present:
> ifneq ($(USE_LARGEFILES),)
> endif

Right. But if you do e.g.:

	touch lib/gis/opencell.c
	make -C lib/gis

does the -D_FILE_OFFSET_BITS=64 switch appear in the output?

> > [r.patch shouldn't need any particular compilation flags, as the file
> > in question is created and written by lib/gis.]
> >
> > 3. Can you provide the files produced by the following commands (run
> > from within a GRASS session):

> > 	nm -D $GISBASE/lib/libgrass_gis.so > nm.txt
>    That file's 905 lines long so I'll attach it to the message rather than
> inserting it here.

This isn't good:

>          U __lxstat

>          U __xstat

>          U creat

>          U fopen

>          U freopen

>          U lseek
>          U lseek64

>          U open
>          U open64

>          U readdir

This implies that most of the library was built without LFS. If I run
the above command here, the corresponding entries are:

         U __lxstat64
         U __xstat64
         U creat64
         U fopen64
         U freopen64
         U lseek64
         U open64
         U readdir64

One possibility is that GRASS was initially built without LFS, then
configure was re-run with --enable-largefile and GRASS was built
without first performing "make clean". This would result in most of
the files not be re-compiled.

I suggest removing both the installed version of GRASS and the source
tree, then compiling from scratch (run make with e.g.
"make &> build.log" to capture all of the output).

After compiling, check the output from "nm ... libgrass_gis.so" and
ensure that all of the above symbols have the "64" suffix. If they
don't, send me the complete make output off-list (compress it first,
as it's likely to be around 3MB uncompressed vs 120KB compressed).

Glynn Clements <glynn at gclements.plus.com>

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