# A potential patch for rcairo **URL:** \ **Category:** Ruby-Gnome 2\ **Created:** [September 14, 2011, 2:46pm UTC](https://www.ruby-forum.com/t/a-potential-patch-for-rcairo/211823 "2011-09-14T14:46:07Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![dubstep](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/cdc98d/32.png) [@dubstep](https://www.ruby-forum.com/u/dubstep)\ **Post date:** [September 14, 2011, 2:46pm UTC](https://www.ruby-forum.com/t/a-potential-patch-for-rcairo/211823/1 "2011-09-14T14:46:07Z")
Hi! (I realize that this is the wrong list, but Kouhei is on this list, and it’s related to Ruby-GNOME2, so I’m letting it slide.) I have attached a small diff to rcairo-1.10.0 to allow it to be compiled with less warnings on Windows (MINGW) (unused functions and signed/unsigned comparison). There’s also a problem with ext/cairo/extconf.rb if you’re not cross-compiling (see the =begin … =end block). What’s the reason for the implib? Also, messing with pkgconfig like that won’t work if I’ve actually compiled cairo myself. ---
**Author:** ![Nikolai\_W](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/df705f/32.png) [@Nikolai\_W](https://www.ruby-forum.com/u/Nikolai_W)\ **Post date:** [September 15, 2011, 3:32pm UTC](https://www.ruby-forum.com/t/a-potential-patch-for-rcairo/211823/2 "2011-09-15T15:32:34Z")
Hi, In [CADdV=removed\_email\_address@domain.invalid](mailto:CADdV=removed_email_address@domain.invalid) “[ruby-gnome2-devel-en] A potential patch for rcairo” on Wed, 14 Sep 2011 14:45:06 +0200, Nikolai W. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > I have attached a small diff to rcairo-1.10.0 to allow it to be > compiled with less warnings on Windows (MINGW) (unused functions and > signed/unsigned comparison). I’ve merged them. Thanks! > ``` > There$B!G(Bs also a problem with > > ``` > > ext/cairo/extconf.rb if you$B!G(Bre not cross-compiling (see the =begin $B!D(B > =end block). What$B!G(Bs the reason for the implib? Also, messing with > pkgconfig like that won$B!G(Bt work if I$B!G(Bve actually compiled cairo myself. implib is used to build Ruby/GTK2 with rcairo. Please put your compiled cairo into vendor/local/. The extconf is desgined to build binary bundled gem. It’s not designed for self build user on Windows. ## Thanks, kou ---
**Author:** ![Nikolai\_W](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/df705f/32.png) [@Nikolai\_W](https://www.ruby-forum.com/u/Nikolai_W)\ **Post date:** [September 15, 2011, 3:35pm UTC](https://www.ruby-forum.com/t/a-potential-patch-for-rcairo/211823/3 "2011-09-15T15:35:39Z")
2011/9/15 Kouhei S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid): > Nikolai W. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > ``` > > There’s also a problem with > > > > ``` > > > > ext/cairo/extconf.rb if you’re not cross-compiling (see the =begin … > > =end block). What’s the reason for the implib? Also, messing with > > pkgconfig like that won’t work if I’ve actually compiled cairo myself. > implib is used to build Ruby/GTK2 with rcairo. > Please put your compiled cairo into vendor/local/. > The extconf is desgined to build binary bundled gem. It’s > not designed for self build user on Windows. OK. Can I provide a patch that makes it possible for it to do both? (An environment variable or similar would do, I suppose.) Also, I noticed that Ruby-GNOME2 mentions that setting CAIRO\_PATH should do something, but I don’t think that it actually works. What I did to get everything working in the end was placing rcairo at the same directory level as ruby-gnome2 and renaming it rcairo.win32. That way ruby-gnome2 found it and everything worked. ---
**Author:** ![Nikolai\_W](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/df705f/32.png) [@Nikolai\_W](https://www.ruby-forum.com/u/Nikolai_W)\ **Post date:** [September 15, 2011, 3:48pm UTC](https://www.ruby-forum.com/t/a-potential-patch-for-rcairo/211823/4 "2011-09-15T15:48:37Z")
Hi, In [CADdV=Mut4yFnCAOvUV9hsrwgj=K=LUJLKm4cJR=removed\_email\_address@domain.invalid](mailto:CADdV=Mut4yFnCAOvUV9hsrwgj=K=LUJLKm4cJR=removed_email_address@domain.invalid) “Re: [ruby-gnome2-devel-en] A potential patch for rcairo” on Thu, 15 Sep 2011 15:34:57 +0200, Nikolai W. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > The extconf is desgined to build binary bundled gem. It’s > > not designed for self build user on Windows. > > OK. Can I provide a patch that makes it possible for it to do both? > (An environment variable or similar would do, I suppose.) Yes. Sure. > Also, I noticed that Ruby-GNOME2 mentions that setting CAIRO\_PATH > should do something, but I don’t think that it actually works. What I > did to get everything working in the end was placing rcairo at the > same directory level as ruby-gnome2 and renaming it rcairo.win32. > That way ruby-gnome2 found it and everything worked. Now, CAIRO\_PATH isn’t used. It’s old information… Colud you remove it? Ruby-GNOME2 can find installed rcairo gem. Is it good enough? If it’s not good enough, it seems good that adding an option to extconf.rb something like --with-rcairo-path. ## Thanks, kou ---
**Author:** ![Nikolai\_W](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/df705f/32.png) [@Nikolai\_W](https://www.ruby-forum.com/u/Nikolai_W)\ **Post date:** [September 15, 2011, 6:23pm UTC](https://www.ruby-forum.com/t/a-potential-patch-for-rcairo/211823/5 "2011-09-15T18:23:47Z")
On Thu, Sep 15, 2011 at 15:47, Kouhei S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Nikolai W. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > 2011/9/15 Kouhei S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid): > > > > > The extconf is desgined to build binary bundled gem. It’s > > > not designed for self build user on Windows. > > OK. Can I provide a patch that makes it possible for it to do both? > > (An environment variable or similar would do, I suppose.) > Yes. Sure. Would something like unless $configure\_args[‘–without-vendor-override’] … end work? > > Also, I noticed that Ruby-GNOME2 mentions that setting CAIRO\_PATH > > should do something, but I don’t think that it actually works. What I > > did to get everything working in the end was placing rcairo at the > > same directory level as ruby-gnome2 and renaming it rcairo.win32. > > That way ruby-gnome2 found it and everything worked. > Now, CAIRO\_PATH isn’t used. It’s old information… Colud > you remove it? Yes, I’ll remove it. I’ll try to unify the handling of cairo. It’s repeated in pango, gtk+, and other places. > Ruby-GNOME2 can find installed rcairo gem. Is it good > enough? If it’s not good enough, it seems good that adding > an option to extconf.rb something like --with-rcairo-path. Well, I don’t want to use the gem ;-). I’ll see what I can come up with tomorrow. It˚s unfortunate that rcairo is in a separate repository… ---
**Author:** ![Nikolai\_W](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/df705f/32.png) [@Nikolai\_W](https://www.ruby-forum.com/u/Nikolai_W)\ **Post date:** [September 16, 2011, 10:36am UTC](https://www.ruby-forum.com/t/a-potential-patch-for-rcairo/211823/6 "2011-09-16T10:36:17Z")
On Thu, Sep 15, 2011 at 18:23, Nikolai W. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Would something like > > unless $configure\_args[‘–without-vendor-override’] > … > end > > work? Patch sent to removed\_email\_address@domain.invalid