[bpt/guile.git] / configure.in

dnl   configuration script for Guile
dnl   Process this file with autoconf to produce configure.
dnl
dnl  Copyright (C) 1998, 1999 Free Software Foundation, Inc.
dnl
dnl  This file is part of GUILE
dnl
dnl  GUILE is free software; you can redistribute it and/or modify it
dnl  under the terms of the GNU General Public License as published by
dnl  the Free Software Foundation; either version 2, or (at your
dnl  option) any later version.
dnl
dnl  GUILE is distributed in the hope that it will be useful, but
dnl  WITHOUT ANY WARRANTY; without even the implied warranty of
dnl  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
dnl  General Public License for more details.
dnl
dnl  You should have received a copy of the GNU General Public License
dnl  along with GUILE; see the file COPYING.  If not, write to the
dnl  Free Software Foundation, Inc., 59 Temple Place - Suite 330,
dnl  Boston, MA 02111-1307, USA.

AC_INIT(Makefile.in)
. $srcdir/GUILE-VERSION
AM_INIT_AUTOMAKE($PACKAGE, $VERSION, no-define)
AM_MAINTAINER_MODE
AM_CONFIG_HEADER(libguile/scmconfig.h)

#--------------------------------------------------------------------
#
# Independent Subdirectories
#
#--------------------------------------------------------------------

AC_CONFIG_SUBDIRS(guile-readline)

#--------------------------------------------------------------------
#
# User options
#
#--------------------------------------------------------------------

AC_ARG_ENABLE(dynamic-linking,
  [  --enable-dynamic-linking  include support for dynamic linking],,
  enable_dynamic_linking=yes)

AC_ARG_ENABLE(guile-debug,
  [  --enable-guile-debug    include internal debugging functions],
  if test "$enable_guile_debug" = y || test "$enable_guile_debug" = yes; then
    AC_DEFINE(GUILE_DEBUG)
  fi)

AC_ARG_ENABLE(debug-freelist,
  [  --enable-debug-freelist    Include garbage collector freelist debugging code],
  if test "$enable_debug_freelist" = y || test "$enable_debug_freelist" = yes; then
    AC_DEFINE(GUILE_DEBUG_FREELIST)
  fi)

AC_ARG_ENABLE(arrays,
  [  --disable-arrays        omit array and uniform array support],,
  enable_arrays=yes)

AC_ARG_ENABLE(posix,
  [  --disable-posix         omit posix interfaces],,
  enable_posix=yes)

AC_ARG_ENABLE(networking,
  [  --disable-net           omit networking interfaces],,
  enable_networking=yes)

AC_ARG_ENABLE(regex,
  [  --disable-regex         omit regular expression interfaces],,
  enable_regex=yes)

dnl The --disable-debug used to control these two.  But now they are
dnl a required part of the distribution.
AC_DEFINE(DEBUG_EXTENSIONS)
AC_DEFINE(READER_EXTENSIONS)

dnl files which are destined for separate modules.

if test "$enable_arrays" = yes; then
   LIBOBJS="$LIBOBJS ramap.o unif.o"
   AC_DEFINE(HAVE_ARRAYS)
fi

if test "$enable_posix" = yes; then
   LIBOBJS="$LIBOBJS filesys.o posix.o"
   AC_DEFINE(HAVE_POSIX)
fi

if test "$enable_networking" = yes; then
   LIBOBJS="$LIBOBJS net_db.o socket.o"
   AC_DEFINE(HAVE_NETWORKING)
fi

#--------------------------------------------------------------------

AC_PROG_CC
AC_PROG_CPP

AC_AIX
AC_ISC_POSIX
AC_MINIX

AM_PROG_CC_STDC
AM_PROG_LIBTOOL

AC_C_CONST
AC_C_INLINE
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(long)
AC_CACHE_CHECK([for long longs], scm_cv_long_longs,
	       AC_TRY_COMPILE(,
			      [long long a],
			      scm_cv_long_longs=yes,
			      scm_cv_long_longs=no))
if test "$scm_cv_long_longs" = yes; then
  AC_DEFINE(HAVE_LONG_LONGS)
fi

AC_HEADER_STDC
AC_HEADER_DIRENT
AC_HEADER_TIME
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS(io.h libc.h limits.h malloc.h memory.h string.h regex.h rxposix.h rx/rxposix.h sys/ioctl.h sys/select.h sys/time.h sys/timeb.h sys/times.h sys/types.h sys/utime.h time.h unistd.h utime.h)
GUILE_HEADER_LIBC_WITH_UNISTD

AC_TYPE_GETGROUPS
AC_TYPE_SIGNAL
AC_TYPE_MODE_T

AC_CHECK_LIB(m, main)
AC_CHECK_FUNCS(gethostbyname)
if test $ac_cv_func_gethostbyname = no; then
    AC_CHECK_LIB(nsl, gethostbyname)
fi
AC_CHECK_FUNCS(connect)
if test $ac_cv_func_connect = no; then
    AC_CHECK_LIB(socket, connect)
fi

# Checks for dynamic linking

if test "$enable_dynamic_linking" = "yes"; then

AC_CHECK_LIB(dl,dlopen)
if test "$ac_cv_lib_dl_dlopen" = "yes"; then
  AC_CHECK_FUNCS(dlopen)
  AC_DEFINE(DYNAMIC_LINKING)
else
AC_CHECK_LIB(dld,dld_link)
if test "$ac_cv_lib_dld_dld_link" = "yes"; then
  AC_DEFINE(DYNAMIC_LINKING)
else
AC_CHECK_FUNCS(shl_load)
if test "$ac_cv_func_shl_load" = "yes"; then
  AC_DEFINE(DYNAMIC_LINKING)
else
AC_CHECK_FUNCS(dlopen)
if test "$ac_cv_func_dlopen" = "yes"; then
  AC_DEFINE(DYNAMIC_LINKING)
fi
fi
fi
fi

fi

GUILE_DLSYM_USCORE

AC_CHECK_FUNCS(ctermid ftime getcwd geteuid gettimeofday lstat mkdir mknod nice readlink rename rmdir select setegid seteuid setlocale setpgid setsid sigaction siginterrupt strftime strptime symlink sync tcgetpgrp tcsetpgrp times uname waitpid bzero strdup system usleep atexit on_exit)

### Some systems don't declare some functions.  On such systems, we
### need to at least provide our own K&R-style declarations.

### GUILE_FUNC_DECLARED(function, headerfile)

### Check for a declaration of FUNCTION in HEADERFILE; if it is
### not there, #define MISSING_FUNCTION_DECL.
AC_DEFUN(GUILE_FUNC_DECLARED, [
  AC_CACHE_CHECK(for $1 declaration, guile_cv_func_$1_declared,
    AC_EGREP_HEADER($1, $2,
		    guile_cv_func_$1_declared=yes, 
		    guile_cv_func_$1_declared=no))
  if test [x$guile_cv_func_]$1[_declared] = xno; then
    AC_DEFINE([MISSING_]translit($1, [a-z], [A-Z])[_DECL])
  fi
])

GUILE_FUNC_DECLARED(strptime, time.h)
GUILE_FUNC_DECLARED(bzero, string.h)
GUILE_FUNC_DECLARED(sleep, unistd.h)
GUILE_FUNC_DECLARED(usleep, unistd.h)

### On some systems usleep has no return value.  If it does have one,
### we'd like to return it; otherwise, we'll fake it.
AC_CACHE_CHECK([return type of usleep], guile_cv_func_usleep_return_type,
  [AC_EGREP_HEADER(changequote(<, >)<void[ 	]+usleep>changequote([, ]),
                   /usr/include/unistd.h,
		   [guile_cv_func_usleep_return_type=void],
		   [guile_cv_func_usleep_return_type=int])])
case "$guile_cv_func_usleep_return_type" in
  "void" )
    AC_DEFINE(USLEEP_RETURNS_VOID)
  ;;
esac

dnl <GNU-WIN32 hacks>

AC_CHECK_HEADER(sys/un.h, have_sys_un_h=1)
if test -n "$have_sys_un_h" ; then
AC_DEFINE(HAVE_UNIX_DOMAIN_SOCKETS)
fi

AC_CHECK_FUNCS(socketpair getgroups setpwent pause tzset)

dnl I don't know what this prefixing of cygwin32_ is for.
dnl scmconfig.h wasn't updated with the test results.
dnl so use AC_CHECK_FUNCS for now.

dnl how about:
dnl save confdefs.h
dnl if test $ac_cv_cigwin = yes; then
dnl   modify confdefs.h
dnl fi
dnl AC_CHECK_FUNCS...
dnl restore confdefs.h

dnl cp confdefs.h confdefs.h.bak
dnl for func in gethostent sethostent endhostent getnetent setnetent endnetent getprotoent setprotoent endprotoent getservent setservent endservent getnetbyaddr getnetbyname inet_lnaof inet_makeaddr inet_netof hstrerror; do
dnl cp confdefs.h.bak confdefs.h
dnl cat >> confdefs.h << EOF 
dnl #ifdef __CYGWIN32__
dnl #define $func cygwin32_$func
dnl #endif
dnl EOF
dnl AC_CHECK_FUNC($func)
dnl done
dnl cp confdefs.h.bak confdefs.h

AC_CHECK_FUNCS(sethostent   gethostent   endhostent   dnl
               setnetent    getnetent    endnetent    dnl
               setprotoent  getprotoent  endprotoent  dnl
               setservent   getservent   endservent   dnl
               getnetbyaddr getnetbyname dnl
	       inet_lnaof inet_makeaddr inet_netof hstrerror)

dnl </GNU-WIN32 hacks>

AC_MSG_CHECKING(whether localtime caches TZ)
AC_CACHE_VAL(guile_cv_localtime_cache,
[if test x$ac_cv_func_tzset = xyes; then
AC_TRY_RUN([#include <time.h>
#if STDC_HEADERS
# include <stdlib.h>
#endif
extern char **environ;
unset_TZ ()
{
  char **from, **to;
  for (to = from = environ; (*to = *from); from++)
    if (! (to[0][0] == 'T' && to[0][1] == 'Z' && to[0][2] == '='))
      to++;
}
char TZ_GMT0[] = "TZ=GMT0";
char TZ_PST8[] = "TZ=PST8";
main()
{
  time_t now = time ((time_t *) 0);
  int hour_GMT0, hour_unset;
  if (putenv (TZ_GMT0) != 0)
    exit (1);
  hour_GMT0 = localtime (&now)->tm_hour;
  unset_TZ ();
  hour_unset = localtime (&now)->tm_hour;
  if (putenv (TZ_PST8) != 0)
    exit (1);
  if (localtime (&now)->tm_hour == hour_GMT0)
    exit (1);
  unset_TZ ();
  if (localtime (&now)->tm_hour != hour_unset)
    exit (1);
  exit (0);
}], guile_cv_localtime_cache=no, guile_cv_localtime_cache=yes,
[# If we have tzset, assume the worst when cross-compiling.
guile_cv_localtime_cache=yes])
else
        # If we lack tzset, report that localtime does not cache TZ,
        # since we can't invalidate the cache if we don't have tzset.
        guile_cv_localtime_cache=no
fi])dnl
AC_MSG_RESULT($guile_cv_localtime_cache)
if test $guile_cv_localtime_cache = yes; then
  AC_DEFINE(LOCALTIME_CACHE)
fi

dnl Test whether system calls are restartable by default on the
dnl current system.  If they are not, we put a loop around every system
dnl call to check for EINTR (see SCM_SYSCALL) and do not attempt to
dnl change from the default behaviour.  On the other hand, if signals
dnl are restartable then the loop is not installed and when libguile
dnl initialises it also resets the behaviour of each signal to cause a
dnl restart (in case a different runtime had a different default
dnl behaviour for some reason: e.g., different versions of linux seem
dnl to behave differently.)

AC_SYS_RESTARTABLE_SYSCALLS

if test "$enable_regex" = yes; then
   if test "$ac_cv_header_regex_h" = yes ||
      test "$ac_cv_header_rxposix_h" = yes ||
      test "$ac_cv_header_rx_rxposix_h" = yes; then
     GUILE_NAMED_CHECK_FUNC(regcomp, norx, [LIBOBJS="regex-posix.o $LIBOBJS"],
     [AC_CHECK_LIB(rx, main)
      GUILE_NAMED_CHECK_FUNC(regcomp, rx, [LIBOBJS="regex-posix.o $LIBOBJS"])]
     )
     dnl The following should not be necessary, but for some reason
     dnl autoheader misses it if we don't include it!
     if test "$ac_cv_func_regcomp_norx" = yes ||
        test "$ac_cv_func_regcomp_rx" = yes; then
       AC_DEFINE(HAVE_REGCOMP)
     fi
   fi
fi

AC_REPLACE_FUNCS(inet_aton putenv strerror memmove)

# When testing for the presence of alloca, we need to add alloca.o
# explicitly to LIBOBJS to make sure that it is translated to
# `alloca.lo' for libtool later on.  This can and should be done more cleanly.
AC_FUNC_ALLOCA
if test "$ALLOCA" = "alloca.o"; then LIBOBJS="alloca.o $LIBOBJS"; fi

AC_STRUCT_ST_RDEV
AC_STRUCT_ST_BLKSIZE

# We could use AC_STRUCT_ST_BLOCKS here, but that adds fileblocks.o to
# LIBOBJS, which we don't need.  This seems more direct. 
AC_CACHE_CHECK([for st_blocks in struct stat], ac_cv_struct_st_blocks,
[AC_TRY_COMPILE([#include <sys/types.h>
#include <sys/stat.h>], [struct stat s; s.st_blocks;],
ac_cv_struct_st_blocks=yes, ac_cv_struct_st_blocks=no)])
if test $ac_cv_struct_st_blocks = yes; then
  AC_DEFINE(HAVE_ST_BLOCKS)
fi

AC_CACHE_CHECK([for S_ISLNK in sys/stat.h], ac_cv_macro_S_ISLNK,
  [AC_TRY_CPP([#include <sys/stat.h>
               #ifndef S_ISLNK
               #error no S_ISLNK
               #endif],
               ac_cv_macro_S_ISLNK=yes,
               ac_cv_macro_S_ISLNK=no)])
if test $ac_cv_macro_S_ISLNK = yes; then
  AC_DEFINE(HAVE_S_ISLNK)
fi

AC_STRUCT_TIMEZONE
GUILE_STRUCT_UTIMBUF

#--------------------------------------------------------------------
#
# Which way does the stack grow?
#
#--------------------------------------------------------------------

AC_TRY_RUN(aux (l) unsigned long l;
	     { int x; exit (l >= ((unsigned long)&x)); }
	   main () { int q; aux((unsigned long)&q); }, 
	   AC_DEFINE(SCM_STACK_GROWS_UP),,AC_MSG_WARN(Guessing that stack grows down -- see scmconfig.h.in))

AC_CACHE_CHECK([whether floats fit in longs], guile_cv_type_float_fits_long,
    [AC_TRY_RUN([main () { exit (sizeof(float) > sizeof(long)); }],
		[guile_cv_type_float_fits_long=yes],
		[guile_cv_type_float_fits_long=no],
		[guile_cv_type_float_fits_long=guess-yes])])
case $guile_cv_type_float_fits_long in
  "yes" )
    AC_DEFINE(SCM_SINGLES)
  ;;
  "guess-yes" )
    AC_DEFINE(SCM_SINGLES)
    AC_MSG_WARN([guessing that sizeof(long) == sizeof(float)])
    AC_MSG_WARN([see SCM_SINGLES in scmconfig.h.in])
  ;;
esac


AC_MSG_CHECKING(for struct linger)
AC_CACHE_VAL(scm_cv_struct_linger,
	AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/socket.h>],
			[struct linger lgr;  lgr.l_linger = 100],
			scm_cv_struct_linger="yes",
			scm_cv_struct_linger="no"))
AC_MSG_RESULT($scm_cv_struct_linger)
if test $scm_cv_struct_linger = yes; then
	AC_DEFINE(HAVE_STRUCT_LINGER)
fi

#--------------------------------------------------------------------
#
# Flags for thread support
#
#--------------------------------------------------------------------

### What thread package has the user asked for?
AC_ARG_WITH(threads, [  --with-threads          thread interface],
            , with_threads=no)

### Turn $with_threads into either the name of a threads package, like
### `qt', or `no', meaning that threads should not be supported.
AC_MSG_CHECKING(whether to support threads)
case "$with_threads" in
  "yes" | "qt" | "coop" | "")
    with_threads=qt
  ;;
  "no" )
  ;;
  * )
    AC_MSG_ERROR(invalid value for --with-threads: $with_threads)
  ;;
esac
AC_MSG_RESULT($with_threads)

## Make sure the threads package we've chosen is actually supported on
## the present platform.
case "${with_threads}" in
  "qt" )
    ## This configures the QuickThreads package, and sets or clears
    ## the THREAD_PACKAGE variable if qthreads don't configure
    ## correctly.
    QTHREADS_CONFIGURE
   ;;
esac

## If we're using threads, bring in some other parts of Guile which
## work with them.
if test "${THREAD_PACKAGE}" != "" ; then
  AC_DEFINE(USE_THREADS, 1)

  ## Include the Guile thread interface in the library...
  LIBOBJS="$LIBOBJS threads.o"

  ## ... and tell it which package to talk to.
  case "${THREAD_PACKAGE}" in
    "QT" )
      AC_DEFINE(USE_COOP_THREADS, 1)
    ;;
    * )
      AC_MSG_ERROR(invalid value for THREAD_PACKAGE: ${THREAD_PACKAGE})
    ;;
  esac

  ## Bring in scm_internal_select, if appropriate.
  if test $ac_cv_func_gettimeofday = yes &&
     test $ac_cv_func_select = yes; then
    LIBOBJS="$LIBOBJS iselect.o"
    AC_DEFINE(GUILE_ISELECT, 1)
  fi
fi

## If we're using GCC, ask for aggressive warnings.
case "$GCC" in
  yes )
    ## We had -Wstrict-prototypes in here for a bit, but Guile does too
    ## much stuff with generic function pointers for that to really be
    ## less than exasperating.
    ## -Wpointer-arith was here too, but something changed in gcc/glibc
    ## and it became equally exasperating (gcc 2.95 and/or glibc 2.1.2).
    CFLAGS="$CFLAGS -Wall -Wmissing-prototypes" ;;
esac

AC_PROG_AWK

## If we're creating a shared library (using libtool!), then we'll
## need to generate a list of .lo files corresponding to the .o files
## given in LIBOBJS.  We'll call it LIBLOBJS.
LIBLOBJS="`echo ${LIBOBJS} | sed 's/\.o/.lo/g'`"

AC_SUBST(GUILE_MAJOR_VERSION)
AC_SUBST(GUILE_MINOR_VERSION)
AC_SUBST(GUILE_VERSION)

dnl Tell guile-config what flags guile users should link against.
GUILE_LIBS="$LDFLAGS $THREAD_LIBS_INSTALLED $LIBS"
AC_SUBST(GUILE_LIBS)

AC_SUBST(AWK)
AC_SUBST(LIBLOBJS)

AC_OUTPUT([Makefile libguile/Makefile libguile/guile-snarf libguile/guile-doc-snarf libguile/guile-snarf.awk libguile/versiondat.h ice-9/Makefile qt/Makefile qt/qt.h qt/md/Makefile qt/time/Makefile guile-config/Makefile doc/Makefile], [chmod +x libguile/guile-snarf; chmod +x libguile/guile-doc-snarf])

dnl Local Variables:
dnl comment-start: "dnl "
dnl comment-end: ""
dnl comment-start-skip: "\\bdnl\\b\\s *"
dnl End:
Commit	Line	Data
777b022a JB	1	dnl configuration script for Guile
777b022a JB	2	dnl Process this file with autoconf to produce configure.
50848747	3	dnl
2adc1dd3	4	dnl Copyright (C) 1998, 1999 Free Software Foundation, Inc.
50848747 JB	5	dnl
	6	dnl This file is part of GUILE
	7	dnl
	8	dnl GUILE is free software; you can redistribute it and/or modify it
	9	dnl under the terms of the GNU General Public License as published by
	10	dnl the Free Software Foundation; either version 2, or (at your
	11	dnl option) any later version.
	12	dnl
	13	dnl GUILE is distributed in the hope that it will be useful, but
	14	dnl WITHOUT ANY WARRANTY; without even the implied warranty of
	15	dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	16	dnl General Public License for more details.
	17	dnl
	18	dnl You should have received a copy of the GNU General Public License
	19	dnl along with GUILE; see the file COPYING. If not, write to the
	20	dnl Free Software Foundation, Inc., 59 Temple Place - Suite 330,
	21	dnl Boston, MA 02111-1307, USA.
	22
0f2d19dd	23	AC_INIT(Makefile.in)
2d26def0	24	. $srcdir/GUILE-VERSION
3a629497	25	AM_INIT_AUTOMAKE($PACKAGE, $VERSION, no-define)
15ae1bee	26	AM_MAINTAINER_MODE
3a629497	27	AM_CONFIG_HEADER(libguile/scmconfig.h)
2d26def0	28
3a629497	29	#--------------------------------------------------------------------
0e8a8468 MV	30	#
	31	# Independent Subdirectories
	32	#
	33	#--------------------------------------------------------------------
	34
	35	AC_CONFIG_SUBDIRS(guile-readline)
	36
	37	#--------------------------------------------------------------------
3a629497 JB	38	#
	39	# User options
	40	#
	41	#--------------------------------------------------------------------
86789f9b	42
3a629497	43	AC_ARG_ENABLE(dynamic-linking,
52cfc69b	44	[ --enable-dynamic-linking include support for dynamic linking],,
af8865f7	45	enable_dynamic_linking=yes)
3a629497 JB	46
3a629497 JB	47	AC_ARG_ENABLE(guile-debug,
52cfc69b	48	[ --enable-guile-debug include internal debugging functions],
7a11a87c MD	49	if test "$enable_guile_debug" = y \|\| test "$enable_guile_debug" = yes; then
	50	AC_DEFINE(GUILE_DEBUG)
	51	fi)
	52
52b3923a GB	53	AC_ARG_ENABLE(debug-freelist,
	54	[ --enable-debug-freelist Include garbage collector freelist debugging code],
	55	if test "$enable_debug_freelist" = y \|\| test "$enable_debug_freelist" = yes; then
fca7547b	56	AC_DEFINE(GUILE_DEBUG_FREELIST)
52b3923a GB	57	fi)
52b3923a GB	58
afe5177e GH	59	AC_ARG_ENABLE(arrays,
	60	[ --disable-arrays omit array and uniform array support],,
	61	enable_arrays=yes)
	62
52cfc69b GH	63	AC_ARG_ENABLE(posix,
	64	[ --disable-posix omit posix interfaces],,
	65	enable_posix=yes)
	66
	67	AC_ARG_ENABLE(networking,
	68	[ --disable-net omit networking interfaces],,
	69	enable_networking=yes)
	70
	71	AC_ARG_ENABLE(regex,
	72	[ --disable-regex omit regular expression interfaces],,
	73	enable_regex=yes)
	74
c176b92b JB	75	dnl The --disable-debug used to control these two. But now they are
	76	dnl a required part of the distribution.
	77	AC_DEFINE(DEBUG_EXTENSIONS)
	78	AC_DEFINE(READER_EXTENSIONS)
	79
52cfc69b GH	80	dnl files which are destined for separate modules.
52cfc69b GH	81
afe5177e GH	82	if test "$enable_arrays" = yes; then
	83	LIBOBJS="$LIBOBJS ramap.o unif.o"
	84	AC_DEFINE(HAVE_ARRAYS)
	85	fi
	86
52cfc69b GH	87	if test "$enable_posix" = yes; then
	88	LIBOBJS="$LIBOBJS filesys.o posix.o"
	89	AC_DEFINE(HAVE_POSIX)
	90	fi
	91
	92	if test "$enable_networking" = yes; then
	93	LIBOBJS="$LIBOBJS net_db.o socket.o"
	94	AC_DEFINE(HAVE_NETWORKING)
	95	fi
	96
3a629497 JB	97	#--------------------------------------------------------------------
	98
	99	AC_PROG_CC
	100	AC_PROG_CPP
3a629497 JB	101
	102	AC_AIX
	103	AC_ISC_POSIX
	104	AC_MINIX
	105
e40ffcb6	106	AM_PROG_CC_STDC
9da7f717	107	AM_PROG_LIBTOOL
e40ffcb6	108
3a629497	109	AC_C_CONST
5e9345c3	110	AC_C_INLINE
9dec9737 MD	111	AC_CHECK_SIZEOF(int)
	112	AC_CHECK_SIZEOF(long)
	113	AC_CACHE_CHECK([for long longs], scm_cv_long_longs,
	114	AC_TRY_COMPILE(,
	115	[long long a],
	116	scm_cv_long_longs=yes,
	117	scm_cv_long_longs=no))
	118	if test "$scm_cv_long_longs" = yes; then
	119	AC_DEFINE(HAVE_LONG_LONGS)
	120	fi
3a629497 JB	121
	122	AC_HEADER_STDC
	123	AC_HEADER_DIRENT
	124	AC_HEADER_TIME
	125	AC_HEADER_SYS_WAIT
2adc1dd3	126	AC_CHECK_HEADERS(io.h libc.h limits.h malloc.h memory.h string.h regex.h rxposix.h rx/rxposix.h sys/ioctl.h sys/select.h sys/time.h sys/timeb.h sys/times.h sys/types.h sys/utime.h time.h unistd.h utime.h)
3a629497 JB	127	GUILE_HEADER_LIBC_WITH_UNISTD
	128
	129	AC_TYPE_GETGROUPS
	130	AC_TYPE_SIGNAL
	131	AC_TYPE_MODE_T
	132
5852c051	133	AC_CHECK_LIB(m, main)
4c787b52	134	AC_CHECK_FUNCS(gethostbyname)
5852c051 JB	135	if test $ac_cv_func_gethostbyname = no; then
	136	AC_CHECK_LIB(nsl, gethostbyname)
	137	fi
4c787b52	138	AC_CHECK_FUNCS(connect)
5852c051 JB	139	if test $ac_cv_func_connect = no; then
	140	AC_CHECK_LIB(socket, connect)
	141	fi
5ee74cec	142
90fcac06 JB	143	# Checks for dynamic linking
90fcac06 JB	144
5852c051 JB	145	if test "$enable_dynamic_linking" = "yes"; then
	146
	147	AC_CHECK_LIB(dl,dlopen)
	148	if test "$ac_cv_lib_dl_dlopen" = "yes"; then
4c787b52	149	AC_CHECK_FUNCS(dlopen)
5852c051 JB	150	AC_DEFINE(DYNAMIC_LINKING)
	151	else
	152	AC_CHECK_LIB(dld,dld_link)
	153	if test "$ac_cv_lib_dld_dld_link" = "yes"; then
5852c051 JB	154	AC_DEFINE(DYNAMIC_LINKING)
5852c051 JB	155	else
4c787b52	156	AC_CHECK_FUNCS(shl_load)
5852c051 JB	157	if test "$ac_cv_func_shl_load" = "yes"; then
5852c051 JB	158	AC_DEFINE(DYNAMIC_LINKING)
a4995389	159	else
4c787b52	160	AC_CHECK_FUNCS(dlopen)
a4995389 MV	161	if test "$ac_cv_func_dlopen" = "yes"; then
	162	AC_DEFINE(DYNAMIC_LINKING)
	163	fi
5852c051 JB	164	fi
	165	fi
	166	fi
	167
	168	fi
	169
2a0d7176	170	GUILE_DLSYM_USCORE
5852c051	171
7ee92fce	172	AC_CHECK_FUNCS(ctermid ftime getcwd geteuid gettimeofday lstat mkdir mknod nice readlink rename rmdir select setegid seteuid setlocale setpgid setsid sigaction siginterrupt strftime strptime symlink sync tcgetpgrp tcsetpgrp times uname waitpid bzero strdup system usleep atexit on_exit)
64e121dc	173
777b022a JB	174	### Some systems don't declare some functions. On such systems, we
	175	### need to at least provide our own K&R-style declarations.
	176
	177	### GUILE_FUNC_DECLARED(function, headerfile)
	178
	179	### Check for a declaration of FUNCTION in HEADERFILE; if it is
	180	### not there, #define MISSING_FUNCTION_DECL.
	181	AC_DEFUN(GUILE_FUNC_DECLARED, [
fc342a63	182	AC_CACHE_CHECK(for $1 declaration, guile_cv_func_$1_declared,
777b022a	183	AC_EGREP_HEADER($1, $2,
fc342a63 JB	184	guile_cv_func_$1_declared=yes,
	185	guile_cv_func_$1_declared=no))
	186	if test [x$guile_cv_func_]$1[_declared] = xno; then
777b022a JB	187	AC_DEFINE([MISSING_]translit($1, [a-z], [A-Z])[_DECL])
	188	fi
	189	])
	190
	191	GUILE_FUNC_DECLARED(strptime, time.h)
	192	GUILE_FUNC_DECLARED(bzero, string.h)
c31bfb85	193	GUILE_FUNC_DECLARED(sleep, unistd.h)
777b022a	194	GUILE_FUNC_DECLARED(usleep, unistd.h)
e1a191a8	195
da753252 JB	196	### On some systems usleep has no return value. If it does have one,
da753252 JB	197	### we'd like to return it; otherwise, we'll fake it.
fc342a63	198	AC_CACHE_CHECK([return type of usleep], guile_cv_func_usleep_return_type,
c43f86c1	199	[AC_EGREP_HEADER(changequote(<, >)<void[ ]+usleep>changequote([, ]),
fc342a63 JB	200	/usr/include/unistd.h,
	201	[guile_cv_func_usleep_return_type=void],
	202	[guile_cv_func_usleep_return_type=int])])
	203	case "$guile_cv_func_usleep_return_type" in
	204	"void" )
	205	AC_DEFINE(USLEEP_RETURNS_VOID)
	206	;;
	207	esac
	208
da88f0cb JB	209	dnl <GNU-WIN32 hacks>
	210
	211	AC_CHECK_HEADER(sys/un.h, have_sys_un_h=1)
	212	if test -n "$have_sys_un_h" ; then
	213	AC_DEFINE(HAVE_UNIX_DOMAIN_SOCKETS)
	214	fi
	215
	216	AC_CHECK_FUNCS(socketpair getgroups setpwent pause tzset)
	217
f4e5b810 GH	218	dnl I don't know what this prefixing of cygwin32_ is for.
	219	dnl scmconfig.h wasn't updated with the test results.
	220	dnl so use AC_CHECK_FUNCS for now.
	221
	222	dnl how about:
	223	dnl save confdefs.h
	224	dnl if test $ac_cv_cigwin = yes; then
	225	dnl modify confdefs.h
	226	dnl fi
	227	dnl AC_CHECK_FUNCS...
	228	dnl restore confdefs.h
	229
	230	dnl cp confdefs.h confdefs.h.bak
5c11cc9d	231	dnl for func in gethostent sethostent endhostent getnetent setnetent endnetent getprotoent setprotoent endprotoent getservent setservent endservent getnetbyaddr getnetbyname inet_lnaof inet_makeaddr inet_netof hstrerror; do
f4e5b810 GH	232	dnl cp confdefs.h.bak confdefs.h
	233	dnl cat >> confdefs.h << EOF
	234	dnl #ifdef __CYGWIN32__
	235	dnl #define $func cygwin32_$func
	236	dnl #endif
	237	dnl EOF
	238	dnl AC_CHECK_FUNC($func)
	239	dnl done
	240	dnl cp confdefs.h.bak confdefs.h
	241
219a5a5b JB	242	AC_CHECK_FUNCS(sethostent gethostent endhostent dnl
	243	setnetent getnetent endnetent dnl
	244	setprotoent getprotoent endprotoent dnl
	245	setservent getservent endservent dnl
5c11cc9d GH	246	getnetbyaddr getnetbyname dnl
5c11cc9d GH	247	inet_lnaof inet_makeaddr inet_netof hstrerror)
da88f0cb JB	248
	249	dnl </GNU-WIN32 hacks>
	250
38c1d3c4 GH	251	AC_MSG_CHECKING(whether localtime caches TZ)
	252	AC_CACHE_VAL(guile_cv_localtime_cache,
	253	[if test x$ac_cv_func_tzset = xyes; then
	254	AC_TRY_RUN([#include <time.h>
	255	#if STDC_HEADERS
	256	# include <stdlib.h>
	257	#endif
	258	extern char **environ;
	259	unset_TZ ()
	260	{
	261	char from, to;
	262	for (to = from = environ; (to = from); from++)
	263	if (! (to[0][0] == 'T' && to[0][1] == 'Z' && to[0][2] == '='))
	264	to++;
	265	}
	266	char TZ_GMT0[] = "TZ=GMT0";
	267	char TZ_PST8[] = "TZ=PST8";
	268	main()
	269	{
	270	time_t now = time ((time_t *) 0);
	271	int hour_GMT0, hour_unset;
	272	if (putenv (TZ_GMT0) != 0)
	273	exit (1);
	274	hour_GMT0 = localtime (&now)->tm_hour;
	275	unset_TZ ();
	276	hour_unset = localtime (&now)->tm_hour;
	277	if (putenv (TZ_PST8) != 0)
	278	exit (1);
	279	if (localtime (&now)->tm_hour == hour_GMT0)
	280	exit (1);
	281	unset_TZ ();
	282	if (localtime (&now)->tm_hour != hour_unset)
	283	exit (1);
	284	exit (0);
	285	}], guile_cv_localtime_cache=no, guile_cv_localtime_cache=yes,
	286	[# If we have tzset, assume the worst when cross-compiling.
	287	guile_cv_localtime_cache=yes])
	288	else
	289	# If we lack tzset, report that localtime does not cache TZ,
	290	# since we can't invalidate the cache if we don't have tzset.
	291	guile_cv_localtime_cache=no
	292	fi])dnl
	293	AC_MSG_RESULT($guile_cv_localtime_cache)
	294	if test $guile_cv_localtime_cache = yes; then
	295	AC_DEFINE(LOCALTIME_CACHE)
	296	fi
	297
7ee92fce GH	298	dnl Test whether system calls are restartable by default on the
	299	dnl current system. If they are not, we put a loop around every system
	300	dnl call to check for EINTR (see SCM_SYSCALL) and do not attempt to
	301	dnl change from the default behaviour. On the other hand, if signals
	302	dnl are restartable then the loop is not installed and when libguile
	303	dnl initialises it also resets the behaviour of each signal to cause a
	304	dnl restart (in case a different runtime had a different default
	305	dnl behaviour for some reason: e.g., different versions of linux seem
	306	dnl to behave differently.)
	307
08b8c694	308	AC_SYS_RESTARTABLE_SYSCALLS
e1a191a8	309
52cfc69b GH	310	if test "$enable_regex" = yes; then
	311	if test "$ac_cv_header_regex_h" = yes \|\|
	312	test "$ac_cv_header_rxposix_h" = yes \|\|
	313	test "$ac_cv_header_rx_rxposix_h" = yes; then
	314	GUILE_NAMED_CHECK_FUNC(regcomp, norx, [LIBOBJS="regex-posix.o $LIBOBJS"],
	315	[AC_CHECK_LIB(rx, main)
	316	GUILE_NAMED_CHECK_FUNC(regcomp, rx, [LIBOBJS="regex-posix.o $LIBOBJS"])]
	317	)
	318	dnl The following should not be necessary, but for some reason
	319	dnl autoheader misses it if we don't include it!
	320	if test "$ac_cv_func_regcomp_norx" = yes \|\|
	321	test "$ac_cv_func_regcomp_rx" = yes; then
	322	AC_DEFINE(HAVE_REGCOMP)
	323	fi
	324	fi
da88f0cb	325	fi
8e1bfcd0	326
dbbbec40	327	AC_REPLACE_FUNCS(inet_aton putenv strerror memmove)
3a629497	328
4a5fa91c TP	329	# When testing for the presence of alloca, we need to add alloca.o
	330	# explicitly to LIBOBJS to make sure that it is translated to
	331	# `alloca.lo' for libtool later on. This can and should be done more cleanly.
3a629497	332	AC_FUNC_ALLOCA
4a5fa91c	333	if test "$ALLOCA" = "alloca.o"; then LIBOBJS="alloca.o $LIBOBJS"; fi
3a629497 JB	334
	335	AC_STRUCT_ST_RDEV
	336	AC_STRUCT_ST_BLKSIZE
075edbde JB	337
	338	# We could use AC_STRUCT_ST_BLOCKS here, but that adds fileblocks.o to
	339	# LIBOBJS, which we don't need. This seems more direct.
	340	AC_CACHE_CHECK([for st_blocks in struct stat], ac_cv_struct_st_blocks,
	341	[AC_TRY_COMPILE([#include <sys/types.h>
	342	#include <sys/stat.h>], [struct stat s; s.st_blocks;],
	343	ac_cv_struct_st_blocks=yes, ac_cv_struct_st_blocks=no)])
	344	if test $ac_cv_struct_st_blocks = yes; then
	345	AC_DEFINE(HAVE_ST_BLOCKS)
	346	fi
	347
fd02f2ad MD	348	AC_CACHE_CHECK([for S_ISLNK in sys/stat.h], ac_cv_macro_S_ISLNK,
	349	[AC_TRY_CPP([#include <sys/stat.h>
	350	#ifndef S_ISLNK
	351	#error no S_ISLNK
	352	#endif],
	353	ac_cv_macro_S_ISLNK=yes,
	354	ac_cv_macro_S_ISLNK=no)])
	355	if test $ac_cv_macro_S_ISLNK = yes; then
	356	AC_DEFINE(HAVE_S_ISLNK)
	357	fi
	358
3a629497 JB	359	AC_STRUCT_TIMEZONE
	360	GUILE_STRUCT_UTIMBUF
	361
3a629497 JB	362	#--------------------------------------------------------------------
	363	#
	364	# Which way does the stack grow?
	365	#
	366	#--------------------------------------------------------------------
	367
	368	AC_TRY_RUN(aux (l) unsigned long l;
	369	{ int x; exit (l >= ((unsigned long)&x)); }
	370	main () { int q; aux((unsigned long)&q); },
	371	AC_DEFINE(SCM_STACK_GROWS_UP),,AC_MSG_WARN(Guessing that stack grows down -- see scmconfig.h.in))
	372
3a171311 JB	373	AC_CACHE_CHECK([whether floats fit in longs], guile_cv_type_float_fits_long,
	374	[AC_TRY_RUN([main () { exit (sizeof(float) > sizeof(long)); }],
	375	[guile_cv_type_float_fits_long=yes],
	376	[guile_cv_type_float_fits_long=no],
	377	[guile_cv_type_float_fits_long=guess-yes])])
	378	case $guile_cv_type_float_fits_long in
	379	"yes" )
	380	AC_DEFINE(SCM_SINGLES)
	381	;;
	382	"guess-yes" )
	383	AC_DEFINE(SCM_SINGLES)
	384	AC_MSG_WARN([guessing that sizeof(long) == sizeof(float)])
	385	AC_MSG_WARN([see SCM_SINGLES in scmconfig.h.in])
	386	;;
	387	esac
3a629497	388
3a629497 JB	389
	390	AC_MSG_CHECKING(for struct linger)
	391	AC_CACHE_VAL(scm_cv_struct_linger,
	392	AC_TRY_COMPILE([
	393	#include <sys/types.h>
	394	#include <sys/socket.h>],
	395	[struct linger lgr; lgr.l_linger = 100],
	396	scm_cv_struct_linger="yes",
	397	scm_cv_struct_linger="no"))
	398	AC_MSG_RESULT($scm_cv_struct_linger)
	399	if test $scm_cv_struct_linger = yes; then
	400	AC_DEFINE(HAVE_STRUCT_LINGER)
	401	fi
3a629497 JB	402
	403	#--------------------------------------------------------------------
	404	#
	405	# Flags for thread support
	406	#
	407	#--------------------------------------------------------------------
	408
539c89a1 JB	409	### What thread package has the user asked for?
	410	AC_ARG_WITH(threads, [ --with-threads thread interface],
	411	, with_threads=no)
	412
	413	### Turn $with_threads into either the name of a threads package, like
	414	### `qt', or `no', meaning that threads should not be supported.
e0f54bcc	415	AC_MSG_CHECKING(whether to support threads)
539c89a1 JB	416	case "$with_threads" in
	417	"yes" \| "qt" \| "coop" \| "")
	418	with_threads=qt
	419	;;
	420	"no" )
	421	;;
	422	* )
	423	AC_MSG_ERROR(invalid value for --with-threads: $with_threads)
	424	;;
	425	esac
e0f54bcc	426	AC_MSG_RESULT($with_threads)
3a629497	427
539c89a1 JB	428	## Make sure the threads package we've chosen is actually supported on
	429	## the present platform.
	430	case "${with_threads}" in
	431	"qt" )
	432	## This configures the QuickThreads package, and sets or clears
	433	## the THREAD_PACKAGE variable if qthreads don't configure
	434	## correctly.
	435	QTHREADS_CONFIGURE
	436	;;
	437	esac
3a629497	438
539c89a1 JB	439	## If we're using threads, bring in some other parts of Guile which
	440	## work with them.
	441	if test "${THREAD_PACKAGE}" != "" ; then
	442	AC_DEFINE(USE_THREADS, 1)
3a629497	443
539c89a1 JB	444	## Include the Guile thread interface in the library...
539c89a1 JB	445	LIBOBJS="$LIBOBJS threads.o"
933a7411	446
539c89a1 JB	447	## ... and tell it which package to talk to.
	448	case "${THREAD_PACKAGE}" in
	449	"QT" )
	450	AC_DEFINE(USE_COOP_THREADS, 1)
	451	;;
	452	* )
	453	AC_MSG_ERROR(invalid value for THREAD_PACKAGE: ${THREAD_PACKAGE})
	454	;;
	455	esac
	456
	457	## Bring in scm_internal_select, if appropriate.
	458	if test $ac_cv_func_gettimeofday = yes &&
	459	test $ac_cv_func_select = yes; then
	460	LIBOBJS="$LIBOBJS iselect.o"
	461	AC_DEFINE(GUILE_ISELECT, 1)
	462	fi
933a7411 MD	463	fi
933a7411 MD	464
3a629497 JB	465	## If we're using GCC, ask for aggressive warnings.
3a629497 JB	466	case "$GCC" in
99be3450	467	yes )
0a1b8b15 JB	468	## We had -Wstrict-prototypes in here for a bit, but Guile does too
	469	## much stuff with generic function pointers for that to really be
	470	## less than exasperating.
aee8ca3f GH	471	## -Wpointer-arith was here too, but something changed in gcc/glibc
	472	## and it became equally exasperating (gcc 2.95 and/or glibc 2.1.2).
	473	CFLAGS="$CFLAGS -Wall -Wmissing-prototypes" ;;
3a629497 JB	474	esac
	475
	476	AC_PROG_AWK
	477
	478	## If we're creating a shared library (using libtool!), then we'll
	479	## need to generate a list of .lo files corresponding to the .o files
	480	## given in LIBOBJS. We'll call it LIBLOBJS.
	481	LIBLOBJS="`echo ${LIBOBJS} \| sed 's/\.o/.lo/g'`"
	482
7c86ae05 JB	483	AC_SUBST(GUILE_MAJOR_VERSION)
	484	AC_SUBST(GUILE_MINOR_VERSION)
	485	AC_SUBST(GUILE_VERSION)
539c89a1	486
bcc695e3	487	dnl Tell guile-config what flags guile users should link against.
539c89a1	488	GUILE_LIBS="$LDFLAGS $THREAD_LIBS_INSTALLED $LIBS"
daa4f38c	489	AC_SUBST(GUILE_LIBS)
7c86ae05	490
3a629497 JB	491	AC_SUBST(AWK)
	492	AC_SUBST(LIBLOBJS)
	493
12b4f7e9	494	AC_OUTPUT([Makefile libguile/Makefile libguile/guile-snarf libguile/guile-doc-snarf libguile/guile-snarf.awk libguile/versiondat.h ice-9/Makefile qt/Makefile qt/qt.h qt/md/Makefile qt/time/Makefile guile-config/Makefile doc/Makefile], [chmod +x libguile/guile-snarf; chmod +x libguile/guile-doc-snarf])
0f2d19dd	495
3a629497 JB	496	dnl Local Variables:
	497	dnl comment-start: "dnl "
	498	dnl comment-end: ""
	499	dnl comment-start-skip: "\\bdnl\\b\\s *"
	500	dnl End: