Most of those aren't used at all, and the others turn out to be easy to work around.
I've pushed changes to our source repo that make DrRacket start under a CentOS 5.5 virtual-machine installation. At Tue, 29 Mar 2011 11:22:53 +0200, "[email protected]" wrote: > Thanks a lot for your reply! Unfortunately, continuing the same procedure and > ending up having made unavailable the following functions: > > in cairo.rkt: > > cairo_clip_extents > cairo_pattern_get_color_stop_count > cairo_pattern_get_color_stop_rgba > cairo_pattern_get_rgba > cairo_pattern_get_surface ( > cairo_pattern_get_linear_points > cairo_pattern_get_radial_circles > > in pango.rkt: > > pango_layout_iter_get_run_readonly > pango_language_get_default > pango_layout_get_unknown_glyphs_count > > drracket tries to start, but the pango stuff seems to be really needed (see > detailed stack trace below). > So I assume that for drracket there's nothing to be done, is it? > The one executable I got to start without errors (that is to say, I tried > mred > too, it started but with errors) was mred-text - would it be possible to work > with this one (I didn't even know it existed before...) if one doesn't need > any graphics? > > Thanks again, > Sigrid > > $ drracket > pango_layout_get_unknown_glyphs_count: implementation not found; arguments: > #<cpointer:PangoLayout> > > === context === > /home/oracle/racket/collects/racket/draw/private/font.rkt:87:0: > has-screen-glyph? > /home/oracle/racket/collects/racket/private/map.rkt:72:11: andmap > /home/oracle/racket/collects/drracket/tool-lib.rkt: [running body] > /home/oracle/racket/collects/drracket/private/drracket-normal.rkt: [running > body] > /home/oracle/racket/collects/drracket/drracket.rkt: [running body] > > pango_layout_iter_get_run_readonly: implementation not found; arguments: > #<cpointer:PangoLayoutIter> > > === context === > /home/oracle/racket/collects/racket/draw/private/dc.rkt:1435:4: > extract-only-run method in dc% > /home/oracle/racket/collects/racket/draw/private/dc.rkt:1167:4: do-text method > in dc% > /home/oracle/racket/collects/racket/draw/private/dc.rkt:1128:4: core > /home/oracle/racket/collects/racket/snip/private/style.rkt:885:2: > reset-text-metrics method in style% > /home/oracle/racket/collects/racket/snip/private/style.rkt:900:2: > get-text-height method in style% > /home/oracle/racket/collects/racket/snip/private/snip.rkt:429:2: core > /home/oracle/racket/collects/mred/private/wxme/mline.rkt:1082:7: loop > /home/oracle/racket/collects/mred/private/wxme/mline.rkt:1077:2: update-here > /home/oracle/racket/collects/mred/private/wxme/mline.rkt:1072:0: > update-graphics > /home/oracle/racket/collects/mred/private/wxme/text.rkt:4692:2: core > /home/oracle/racket/collects/mred/private/wxme/text.rkt:4845:2: redraw method > in text% > /home/oracle/racket/collects/mred/private/wxme/editor-canvas.rkt:968:2: core > /home/oracle/racket/collects/racket/private/more-scheme.rkt:149:2: > call-with-break-parameterization > /home/oracle/racket/collects/racket/private/more-scheme.rkt:265:2: > call-with-exception-handler > /home/oracle/racket/collects/racket/private/class-internal.rkt:3511:0: > continue-make-object > /home/oracle/racket/collects/racket/private/class-internal.rkt:3433:2: > make-object > ... > > about to suspend in atomic mode > Aborted > > > > > > Am 28.03.2011 um 22:37 schrieb Matthew Flatt: > > > Sorry, I'd lost track of this one. > > > > The cairo_clip_extents() function is used to implement the `is-empty? > > method of region%, for which I can find no uses anywhere in the Racket > > source tree. > > > > So, if you change "collects/draw/unsafe/cairo.rkt" around line 124 to > > > > (define-cairo cairo_clip_extents (_fun _cairo_t > > (x1 : (_ptr o _double)) > > (y1 : (_ptr o _double)) > > (x2 : (_ptr o _double)) > > (y2 : (_ptr o _double)) > > -> _void > > -> (values x1 y1 x2 y2)) > > ;; Adding this part: > > #:make-fail make-not-available) > > > > does that fix the problem, or are there other missing functions? > > > > > > At Mon, 28 Mar 2011 22:05:09 +0200, "[email protected]" wrote: > >> Hi, > >> > >> I've encountered the exactly same problem today, running on Oracle Linux > >> (= > >> Red Hat 5.5, approximately)... > >> Would anyone know a workaround for this, or if any not-too-outdated racket > >> version would run with the old libcairo version? > >> > >> Unfortunately I have no alternative to installing racket on some > RedHat-like > >> system in a VM, for the present purpose... > >> > >> Many thanks for any ideas, > >> Sigrid > >> > >> > >> > >> > >>> > >>> > >>> ------------------------------ > >>> > >>> Message: 3 > >>> Date: Tue, 01 Mar 2011 22:48:20 -0500 > >>> From: Neil Van Dyke <[email protected]> > >>> To: Ritchie Cai <[email protected]> > >>> Cc: [email protected] > >>> Subject: Re: [racket] Racket on Centos 5 > >>> Message-ID: <[email protected]> > >>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed > >>> > >>> Apparently CentOS 5.5 packages Cairo version 1.2.4. > >>> > >>> Looks like "cairo_clip_extents" was introduced in Cairo snapshot version > >>> 1.3.2. > >>> > >>> So, "cairo_clip_extents" was introduced in the development stream in > >>> November 15th, 2006, four years ago, but the RHEL distro (and therefore, > >>> CentOS) has not picked it up. Seems like RHEL/CentOS are as bad for > >>> recent-era libraries as Debian Stable. (Matthew Flatt graciously added > >>> compatibility with the old GTK-related library versions on the Debian > >>> Stable distros that I tend to use.) > >>> > >>> Looks like the recently released RHEL 6 has Cairo 1.8.8 or later (which > >>> should be fine for DrRacket), but CentOS 6 is not yet available. I > >>> don't know what Cairo version CentOS 5.6 will have. > >>> > >>> Ritchie Cai wrote at 03/01/2011 10:09 PM: > >>>> Centos 5.5, [...] ffi-obj: couldn't get "cairo_clip_extents" from > >> "libcairo.so.2" (/usr/lib64/libcairo.so.2: undefined symbol: > >> cairo_clip_extents) > >>>> > >>> > >>> -- > >>> http://www.neilvandyke.org/ > >>> > >> > >> > >> _________________________________________________ > >> For list-related administrative tasks: > >> http://lists.racket-lang.org/listinfo/users _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users
