pari-2.3.3 sometimes ignores --graphic=none build option

[wjp]

pdehaye reported a build error in pari on IRC.

We tracked this down to what seems to be a bug in pari's Configure script (or rather config/get_fltk): if X11 is not found, and fltk is found, it ignores the --graphic=none option. It then tries to build with fltk support, and fails spectacularly.

(Aside: pari-2.4.2.alpha still has the same logic in config/get_fltk.) This sage-support thread also reports the same problem.

Upstream: None of the above - read trac for reasoning.

CC: @jaapspies

Component: build

Author: Willem Jan Palenstijn, Minh Van Nguyen

Issue created by migration from https://trac.sagemath.org/ticket/7979

[wjp]

Upstream: None of the above - read trac for reasoning.

[wjp]

comment:1

Attachment: pari_fltk.patch.gz

I contacted Karim Belabas about this, suggesting the attached patch to pari's config/get_fltk.

[sagetrac-mvngu]

comment:2

Updated spkg is up at

http://boxen.math.washington.edu/home/mvngu/spkg/standard/pari/pari-2.3.3.p8.spkg

This has Willem's patch for src/config/get_fltk. This spkg might need to be based on that at #8099.

[sagetrac-mvngu]

Author: Willem Jan Palenstijn, Minh Van Nguyen

[sagetrac-mvngu]

Description changed:

--- 
+++ 
@@ -2,4 +2,4 @@
 
 We tracked this down to what seems to be a bug in pari's Configure script (or rather config/get_fltk): if X11 is not found, and fltk is found, it ignores the --graphic=none option. It then tries to build with fltk support, and fails spectacularly.
 
-(Aside: pari-2.4.2.alpha still has the same logic in config/get_fltk.)
+(Aside: pari-2.4.2.alpha still has the same logic in config/get_fltk.) This [sage-support](http://groups.google.com/group/sage-support/browse_thread/thread/0c895b6b12eb1d41) thread also reports the same problem.

[sagetrac-mvngu]

comment:5

Ticket #8453 upgrades Pari to version 2.3.5, so this ticket is no longer relevant. So I'm closing this ticket as "wontfix". However, the file config/get_fltk in Pari 2.3.5 has the same logic as in Pari 2.3.3 so it's possible that Pari 2.3.5 also ignores the build option "--graphic=none". If that issue comes up, open another ticket to patch Pari 2.3.5 for Sage.