Bug 47517

Summary:	app-sci/netcdf needs -fPIC patch
Product:	Gentoo Linux	Reporter:	Bryan Østergaard (RETIRED) <kloeri>
Component:	New packages	Assignee:	Gentoo Science Related Packages <sci>
Status:	RESOLVED FIXED
Severity:	normal
Priority:	High
Version:	unspecified
Hardware:	All
OS:	All
Whiteboard:
Package list:		Runtime testing required:	---
Attachments:	fPIC patch to /libsrc/Makefile Relocation errors from missing -fPIC.

Description Bryan Østergaard (RETIRED) gentoo-dev

2004-04-11 09:31:37 UTC

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 Bryan Østergaard (RETIRED) gentoo-dev

2004-04-11 09:33:06 UTC

Created attachment 29081 [details, diff]
fPIC patch to /libsrc/Makefile

Comment 2 Patrick Kursawe (RETIRED) gentoo-dev

2004-04-19 06:30:35 UTC

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 Donnie Berkholz (RETIRED) gentoo-dev

2004-04-19 10:39:11 UTC

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 Bryan Østergaard (RETIRED) gentoo-dev

2004-04-19 12:11:14 UTC

Created attachment 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 Patrick Kursawe (RETIRED) gentoo-dev

2004-04-19 23:11:09 UTC

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.