Re: Guile with win32 cross compiling

[Volker Grabsch]

Hello Andy,

thanks for the quick reply and for accepting and cleaning up
my patches so far.

Andy Wingo schrieb:
> >   CC     net_db.lo
> > net_db.c:460:1: error: 'AI_ALL' undeclared here (not in a function)
> > net_db.c:460:1: error: expression in static assertion is not an integer
> > net_db.c:482:33: warning: 'struct addrinfo' declared inside parameter list 
> > [enabled by default]
[...]
> If your target does not have e.g. struct addrinfo, because it does not
> have IPv6, then you need to configure with
> ac_cv_type_struct_addrinfo=no.  Check your config.log.  Or should this
> be working somehow?
> 
> There are other ac_cv_* for getaddrinfo and other routines.

Okay, so I'm trying to get along without this ugly "ac_cv_type_struct_addrinfo"
hack, hoping that the following error report will be more useful to you.


1) My first attempt is to enable threads via:

   ./configure --host=i686-pc-mingw32 --disable-shared --with-threads 
LIBS='-lunistring -lintl -liconv'

This leads to the attached (compressed) config.log:

    config.log.with-threads.bz2

Make stops at this point:

---------------------------------------------------------------
  CC     libguile_2.0_la-threads.lo
threads.c: In function 'to_timespec':
threads.c:245:15: error: dereferencing pointer to incomplete type
threads.c:246:15: error: dereferencing pointer to incomplete type
threads.c:253:15: error: dereferencing pointer to incomplete type
threads.c:254:15: error: dereferencing pointer to incomplete type
threads.c: In function 'launch_thread':
threads.c:974:3: warning: implicit declaration of function 'GC_pthread_detach' 
[-Wimplicit-function-declaration]
threads.c: In function 'scm_call_with_new_thread':
threads.c:1009:3: warning: implicit declaration of function 'GC_pthread_create' 
[-Wimplicit-function-declaration]
threads.c: In function 'scm_join_thread_timed':
threads.c:1188:18: error: storage size of 'ctimeout' isn't known
threads.c:1188:18: warning: unused variable 'ctimeout' [-Wunused-variable]
threads.c: In function 'fat_mutex_lock':
threads.c:1408:41: error: dereferencing pointer to incomplete type
threads.c:1409:36: error: dereferencing pointer to incomplete type
threads.c:1410:43: error: dereferencing pointer to incomplete type
threads.c: In function 'scm_lock_mutex_timed':
threads.c:1442:18: error: storage size of 'cwaittime' isn't known
threads.c:1442:18: warning: unused variable 'cwaittime' [-Wunused-variable]
threads.c: In function 'scm_try_mutex':
threads.c:1476:18: error: storage size of 'cwaittime' isn't known
threads.c:1476:18: warning: unused variable 'cwaittime' [-Wunused-variable]
threads.c: In function 'scm_unlock_mutex_timed':
threads.c:1619:18: error: storage size of 'cwaittime' isn't known
threads.c:1619:18: warning: unused variable 'cwaittime' [-Wunused-variable]
threads.c: In function 'scm_timed_wait_condition_variable':
threads.c:1723:18: error: storage size of 'waittime' isn't known
threads.c:1723:18: warning: unused variable 'waittime' [-Wunused-variable]
threads.c: In function 'scm_pthread_cond_timedwait':
threads.c:1924:3: warning: passing argument 3 of 'pthread_cond_timedwait' from 
incompatible pointer type [enabled by default]
/home/vog/mingw-cross-env/usr/lib/gcc/i686-pc-mingw32/4.6.0/../../../../i686-pc-mingw32/include/pthread.h:1069:31:
 note: expected 'const struct timespec *' but argument is of type 'const struct 
scm_t_timespec *'
---------------------------------------------------------------



2) My second attempt is to build without threading:

This leads to a slightly different config.log which I also attached:

    config.log.without-threads.bz2

Make then stops at the same point with just a few less error messages:

---------------------------------------------------------------
  CC     libguile_2.0_la-threads.lo
threads.c: In function 'to_timespec':
threads.c:245:15: error: dereferencing pointer to incomplete type
threads.c:246:15: error: dereferencing pointer to incomplete type
threads.c:253:15: error: dereferencing pointer to incomplete type
threads.c:254:15: error: dereferencing pointer to incomplete type
threads.c: In function 'scm_cancel_thread':
threads.c:1124:7: warning: statement with no effect [-Wunused-value]
threads.c: In function 'scm_join_thread_timed':
threads.c:1188:18: error: storage size of 'ctimeout' isn't known
threads.c:1188:18: warning: unused variable 'ctimeout' [-Wunused-variable]
threads.c: In function 'fat_mutex_lock':
threads.c:1408:41: error: dereferencing pointer to incomplete type
threads.c:1409:36: error: dereferencing pointer to incomplete type
threads.c:1410:43: error: dereferencing pointer to incomplete type
threads.c: In function 'scm_lock_mutex_timed':
threads.c:1442:18: error: storage size of 'cwaittime' isn't known
threads.c:1442:18: warning: unused variable 'cwaittime' [-Wunused-variable]
threads.c: In function 'scm_try_mutex':
threads.c:1476:18: error: storage size of 'cwaittime' isn't known
threads.c:1476:18: warning: unused variable 'cwaittime' [-Wunused-variable]
threads.c: In function 'scm_unlock_mutex_timed':
threads.c:1619:18: error: storage size of 'cwaittime' isn't known
threads.c:1619:18: warning: unused variable 'cwaittime' [-Wunused-variable]
threads.c: In function 'scm_timed_wait_condition_variable':
threads.c:1723:18: error: storage size of 'waittime' isn't known
threads.c:1723:18: warning: unused variable 'waittime' [-Wunused-variable]
---------------------------------------------------------------


I ran builds builds from a clean Git checkout of commit
"19761af161942ef18aa2b7891cbf718fc5be5945" of the stable-2.0 branch.


Note that I would of course prefer a thread-supporting build of Guile,
but the problem is that "libgc" refuses to build under MinGW with
Pthreads, so I had to build libgc with "--enable-threads=win32".

On the other hand, it seems that Guile assumes "libgc" to be built
with "--enable-threads=pthreads".

I'm not sure whether this should be fixed in libgc or in Guile.
Nevertheless, this only accounts for half of the issues, as Guile
also fails to build without threading suppport (--without-threads).

As a final note, I'm using the "Pthreads-w32" library to provide
pthread support under MinGW.  (http://sourceware.org/pthreads-win32/)


Greets,
Volker

-- 
Volker Grabsch
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