Bug 47517 - app-sci/netcdf needs -fPIC patch
Bug#: 47517 Product:  Gentoo Linux Version: unspecified Platform: All
OS/Version: All Status: RESOLVED Severity: normal Priority: P2
Resolution: FIXED Assigned To: sci@gentoo.org Reported By: kloeri@gentoo.org
Component: Ebuilds
URL: 
Summary: app-sci/netcdf needs -fPIC patch
Keywords:  
Status Whiteboard: 
Opened: 2004-04-11 09:31 0000
Description:   Opened: 2004-04-11 09:31 0000 
The libnetcdf library should be compiled with -fPIC on alpha at least. I'll
attach a patch for the libsrc/Makefile file. The patch has been tested on alpha
and x86.

------- Comment #1 From Bryan Østergaard (RETIRED) 2004-04-11 09:33:06 0000 ------- 
Created an attachment (id=29081) [details]
fPIC patch to /libsrc/Makefile

------- Comment #2 From Patrick Kursawe 2004-04-19 06:30:35 0000 ------- 
May I ask why you think -fPIC is necessary? As far as I can see it builds only
static libraries, and PIC stuff is only relevant for shared libs. Please
correct me if I'm wrong there.
What goes wrong if it is compiled without -fPIC?

------- Comment #3 From Donnie Berkholz 2004-04-19 10:39:11 0000 ------- 
Actually if static libs aren't compiled PIC, then some issues come up on 64-bit
installs (e.g., amd64). See bug #44274 or bug #40646.

------- Comment #4 From Bryan Østergaard (RETIRED) 2004-04-19 12:11:14 0000 ------- 
Created an attachment (id=29641) [details]
Relocation errors from missing -fPIC.

I'm getting gp-relative relocation errors when emerging ScientificPython which
links against netcdf. See attached emerge log.

Another solution would be to inherit the 64-bit.eclass and doing something like
'64-bit && append-flags -fPIC', although I think patching the Makefile is
cleaner.

------- Comment #5 From Patrick Kursawe 2004-04-19 23:11:09 0000 ------- 
Ok, all docs I saw talked about "shared objects", which I thought is different
from a static library, but you sound very convincing :-)

Have put that into portage, thanks.