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, "keyd...@gmx.de" 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 <n...@neilvandyke.org> >>> To: Ritchie Cai <ritchie...@gmail.com> >>> Cc: users@racket-lang.org >>> Subject: Re: [racket] Racket on Centos 5 >>> Message-ID: <4d6dbe04.3070...@neilvandyke.org> >>> 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
