Re: Guile 1.8.2 Compile Error [GAH]

[Kevin Brott]

On Wed, 2007-11-14 at 00:39 +0000, Neil Jerram wrote:
> "Kevin Brott" <address@hidden> writes:
> 
> > Still baffled - but haven't given up yet.
> 
> Going back to your original report... all of the compile errors were
> triggered on lines containing "func_data".  Is it possible that you're
> somehow pulling in a header which #defines func_data to be something
> else (including a .) ?  What happens if you change all occurrences of
> "func_data" to "xxx_func_data" and then build again?
> 
> Also, looking through the thread, I became confused about which gcc
> version / OS combinations exhibit this problem, and which don't.
> Could you give a summary all in one place?
> 
> Regards,
>         Neil
> 

okay - fairly simple (I hope):

AIX 5.2 + gcc 4.2.2 = guile 1.8.3 w/not compile
Ubuntu 7.10 + gcc 4.1.2 = guile 1.8.3 compiles

BUT - when you try to compile the code snips out of hooks.h that the
error refers to - both the Linux and AIX gcc's spew identical errors.

I'm working through the gcc compile line that explodes - and I've found
one thing rather interesting --- the last compile line in
guile-1.8.3/libguile  that explodes is:

gcc -DHAVE_CONFIG_H -I. -I.. -I.. -I.. -I/opt/phs/include -D_THREAD_SAFE 
  -O2 -mcpu=power2 -pthread -Wall -Wmissing-prototypes -Werror 
  -MT libguile_la-discouraged.lo -MD -MP -MF deps/libguile_la-discouraged.Tpo 
  -c discouraged.c  -DPIC -o .libs/libguile_la-discouraged.o

Which gives this:
In file included from ../libguile/gc.h:27,
                 from ../libguile.h:73,
                 from discouraged.c:22:
./libguile/hooks.h:43: error: expected ';', ',' or ')' before '.' token
./libguile/hooks.h:48: error: expected specifier-qualifier-list before 
'scm_t_c_hook_function'
./libguile/hooks.h:62: error: expected declaration specifiers or '...' before 
'scm_t_c_hook_function'
./libguile/hooks.h:63: error: expected ';', ',' or ')' before '.' token
./libguile/hooks.h:66: error: expected declaration specifiers or '...' before 
'scm_t_c_hook_function'
./libguile/hooks.h:67: error: expected ';', ',' or ')' before '.' token
gmake[3]: *** [libguile_la-discouraged.lo] Error 1

Now if I cd into libguile and hand-execute that line - without the -I..
elements it compiles without errors.  Which argues that something else
I'm not seeing is being included that is causing the problem.

Code-monkey friend of mine suggested that the problem is with the cpp
output, but when I do this:

  cpp discouraged.c -o foo.c && gcc -c foo.c

I get foo.o and no errors.  Now bear in mind that I'm a C/C++ newb and
that last bit probably means nada.

You sir have hit a nail on the head - at least the compile got past
discouraged.c anyway ...

perl -pi -e 's/func_data/xxx_func_data/g' libguile/hooks.h

gmake clean && gmake ... gets down to:

gcc -DHAVE_CONFIG_H -I. -I.. -I.. -I.. -I/opt/phs/include 
-I/opt/freeware/include 
  -D_THREAD_SAFE -g -O2 -Wall -Wmissing-prototypes -Werror -MT 
libguile_la-gc.lo 
  -MD -MP -MF .deps/libguile_la-gc.Tpo -c gc.c  -DPIC -o libs/libguile_la-gc.o

gc.c:974: error: expected ';', ',' or ')' before '.' token
gc.c: In function 'scm_init_gc':
gc.c:1023: error: 'mark_gc_async' undeclared (first use in this function)
gc.c:1023: error: (Each undeclared identifier is reported only once
gc.c:1023: error: for each function it appears in.)
gmake[3]: *** [libguile_la-gc.lo] Error 1

Oh look ! 
gc.c:974:               void *func_data SCM_UNUSED,

more perlfoo on gc.c

gmake clean && gmake ... gets down to:

gcc -DHAVE_CONFIG_H -I. -I.. -I.. -I.. -I/opt/phs/include 
-I/opt/freeware/include 
  -D_THREAD_SAFE -g -O2 -Wall -Wmissing-prototypes -Werror -MT 
libguile_la-hooks.lo 
  -MD -MP -MF .deps/libguile_la-hooks.Tpo -c hooks.c  -DPIC -o 
libs/libguile_la-hooks.o
hooks.c:53: error: expected ';', ',' or ')' before '.' token
hooks.c:70: error: expected ';', ',' or ')' before '.' token
gmake[3]: *** [libguile_la-hooks.lo] Error 1

more perlfoo on hooks.c

gmake clean && gmake ... gets down to:

gcc -DHAVE_CONFIG_H -I. -I.. -I.. -I.. -I/opt/phs/include 
-I/opt/freeware/include 
  -D_THREAD_SAFE -g -O2 -Wall -Wmissing-prototypes -Werror -MT 
libguile_la-numbers.lo 
  -MD -MP -MF .deps/libguile_la-numbers.Tpo -c numbers.c  -DPIC -o 
libs/libguile_la-numbers.o

cc1: warnings being treated as errors
numbers.c: In function 'guile_ieee_init':
numbers.c:617: warning: dereferencing type-punned pointer will break 
strict-aliasing rules
numbers.c:640: warning: dereferencing type-punned pointer will break 
strict-aliasing rules
numbers.c: In function 'scm_exp':
numbers.c:6081: error: '__I' undeclared (first use in this function)
numbers.c:6081: error: (Each undeclared identifier is reported only once
numbers.c:6081: error: for each function it appears in.)
gmake[3]: *** [libguile_la-numbers.lo] Error 1

Which is :
   6078   if (SCM_COMPLEXP (z))
   6079     {
   6080 #if HAVE_COMPLEX_DOUBLE && HAVE_CEXP
   6081       return scm_from_complex_double (cexp (SCM_COMPLEX_VALUE (z)));
   6082 #else
   6083       return scm_c_make_polar (exp (SCM_COMPLEX_REAL (z)),
   6084                                SCM_COMPLEX_IMAG (z));
   6085 #endif
   6086     }

And I'm stuck again :p

running a 'find' now to see if func_data is showing up somewhere else being 
sneaky.

-- 
#include <stddisclaimer.h>
/* Kevin Brott <address@hidden> 
 * Unix Systems Engineer - SA Group - Provtech
 * Providence Health Systems, Tigard, OR
 */


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