Matthew Flatt wrote:
>The main change seems to be dropping the "0" version. Does replacing
>'("0") with '("0" "") also work, so that a versionless name is tried
>when the versioned name fails?
That part seems to work. See the error message below. It looks a bit
strange though because the error message from ffi-lib points to
libcairo.so.2 when in fact the library that ffi-lib ends up trying to
load is libcairo.so.11.0.
>> Just to make things more annoying, libcairo needs libpthread:
>> [...]
>> so I also had to change the define-runtime-lib macro from
>> collects/racket/draw/private/libs.rkt so that the unix case of the
>> macro accepts multiple libraries. I'm not sure that's the best way to
>> go about adding libpthread though, and I'm definitely not sure that my
>> simple change to collects/racket/draw/unsafe/cairo.rkt to add
>> libpthread works on other platforms...
>
>Won't "libpthread" get loaded auomatically when "libcairo" is loaded?
Apparently not:
$ ldd /usr/local/lib/libcairo.so.11.0 | grep pthread
0318a000 2318e000 rlib 0 11 0
/usr/X11R6/lib/libpthread-stubs.so.1.0
$
So it looks like it has to be done explicitely. This is what
currently happens with the latest version (without any of my patches):
$ gracket/gracket3m
gracket/gracket3m:/usr/local/lib/libcairo.so.11.0: undefined symbol
'pthread_mutexattr_destroy'
gracket/gracket3m:/usr/local/lib/libcairo.so.11.0: undefined symbol
'pthread_mutexattr_settype'
gracket/gracket3m:/usr/local/lib/libcairo.so.11.0: undefined symbol
'pthread_mutexattr_init'
ffi-lib: couldn't open "libcairo.so.2" (File not found)
=== context ===
/home/meunier/lang/plt/collects/racket/draw/unsafe/cairo.rkt: [running body]
/home/meunier/lang/plt/collects/racket/draw/private/font.rkt: [traversing
imports]
/home/meunier/lang/plt/collects/racket/draw/private/post-script-dc.rkt:
[traversing imports]
/home/meunier/lang/plt/collects/racket/draw.rkt: [traversing imports]
/home/meunier/lang/plt/collects/mred/private/kernel.rkt: [traversing imports]
/home/meunier/lang/plt/collects/mred/private/const.rkt: [traversing imports]
/home/meunier/lang/plt/collects/mred/private/check.rkt: [traversing imports]
/home/meunier/lang/plt/collects/mred/mred.rkt: [traversing imports]
/home/meunier/lang/plt/collects/mred/main.rkt: [traversing imports]
/home/meunier/lang/plt/collects/scheme/gui/base.rkt: [traversing imports]
/home/meunier/lang/plt/collects/scheme/gui.rkt: [traversing imports]
/home/meunier/lang/plt/collects/racket/gui/init.rkt: [traversing imports]
/home/meunier/lang/plt/collects/scheme/gui/init.rkt: [traversing imports]
gracket/gracket3m:/usr/local/lib/libgthread-2.0.so.2600.0: undefined symbol
'pthread_mutex_lock'
gracket/gracket3m:/usr/local/lib/libgthread-2.0.so.2600.0: undefined symbol
'pthread_mutex_unlock'
gracket/gracket3m:/usr/local/lib/libgthread-2.0.so.2600.0: undefined symbol
'pthread_cond_signal'
[... 20 more lines like this ...]
gracket/gracket3m:/usr/local/lib/libgthread-2.0.so.2600.0: undefined symbol
'pthread_attr_getschedparam'
gracket/gracket3m:/usr/local/lib/libgthread-2.0.so.2600.0: undefined symbol
'pthread_setspecific'
link: reference (phase 0) to a variable in module
"/home/meunier/lang/plt/collects/racket/draw/unsafe/cairo.rkt" that is
uninitialized (phase level 0); reference appears in module:
"/home/meunier/lang/plt/collects/racket/draw/unsafe/pango.rkt" in: _cairo_t
=== context ===
/home/meunier/lang/plt/collects/racket/draw/unsafe/pango.rkt: [running body]
/home/meunier/lang/plt/collects/racket/draw/private/font.rkt: [traversing
imports]
/home/meunier/lang/plt/collects/racket/draw/private/post-script-dc.rkt:
[traversing imports]
/home/meunier/lang/plt/collects/racket/draw.rkt: [traversing imports]
/home/meunier/lang/plt/collects/mred/private/kernel.rkt: [traversing imports]
/home/meunier/lang/plt/collects/mred/private/const.rkt: [traversing imports]
/home/meunier/lang/plt/collects/mred/private/check.rkt: [traversing imports]
/home/meunier/lang/plt/collects/mred/mred.rkt: [traversing imports]
Philippe
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