[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(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-networking    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_LIBLTDL_CONVENIENCE
AC_CONFIG_SUBDIRS(libltdl)

AC_PROG_CC
AC_PROG_CPP
AC_LIBTOOL_DLOPEN

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

# Check for dynamic linking

use_modules=yes
AC_ARG_WITH(modules,
[  --with-modules[=FILES]  Add support for dynamic modules],
use_modules="$withval")
test -z "$use_modules" && use_modules=yes
DLPREOPEN=
if test "$use_modules" != no; then
  AC_DEFINE(DYNAMIC_LINKING)
  if test "$use_modules" = yes; then
    DLPREOPEN="-dlpreopen force"
  else
    DLPREOPEN="-export-dynamic"
    for module in $use_modules; do
      DLPREOPEN="$DLPREOPEN -dlopen $module"
    done
  fi
fi
AC_SUBST(INCLTDL)
AC_SUBST(LIBLTDL)
AC_SUBST(DLPREOPEN)

AC_CHECK_FUNCS(ctermid ftime fchown 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-func-name-check 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 libguile/guile-doc-snarf libguile/guile-func-name-check])

dnl Local Variables:
dnl comment-start: "dnl "
dnl comment-end: ""
dnl comment-start-skip: "\\bdnl\\b\\s *"
dnl
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, $VERSION, no-define)
15ae1bee	26	AM_MAINTAINER_MODE
3a629497	27	AM_CONFIG_HEADER(libguile/scmconfig.h)
2d26def0	28
3a629497	29	#--------------------------------------------------------------------
0e8a8468 MV	30	#
	31	# Independent Subdirectories
	32	#
	33	#--------------------------------------------------------------------
	34
	35	AC_CONFIG_SUBDIRS(guile-readline)
	36
	37	#--------------------------------------------------------------------
3a629497 JB	38	#
	39	# User options
	40	#
	41	#--------------------------------------------------------------------
86789f9b	42
3a629497	43	AC_ARG_ENABLE(guile-debug,
52cfc69b	44	[ --enable-guile-debug include internal debugging functions],
7a11a87c MD	45	if test "$enable_guile_debug" = y \|\| test "$enable_guile_debug" = yes; then
	46	AC_DEFINE(GUILE_DEBUG)
	47	fi)
	48
52b3923a GB	49	AC_ARG_ENABLE(debug-freelist,
	50	[ --enable-debug-freelist Include garbage collector freelist debugging code],
	51	if test "$enable_debug_freelist" = y \|\| test "$enable_debug_freelist" = yes; then
fca7547b	52	AC_DEFINE(GUILE_DEBUG_FREELIST)
52b3923a GB	53	fi)
52b3923a GB	54
afe5177e GH	55	AC_ARG_ENABLE(arrays,
	56	[ --disable-arrays omit array and uniform array support],,
	57	enable_arrays=yes)
	58
52cfc69b GH	59	AC_ARG_ENABLE(posix,
	60	[ --disable-posix omit posix interfaces],,
	61	enable_posix=yes)
	62
	63	AC_ARG_ENABLE(networking,
dc914156	64	[ --disable-networking omit networking interfaces],,
52cfc69b GH	65	enable_networking=yes)
	66
	67	AC_ARG_ENABLE(regex,
	68	[ --disable-regex omit regular expression interfaces],,
	69	enable_regex=yes)
	70
c176b92b JB	71	dnl The --disable-debug used to control these two. But now they are
	72	dnl a required part of the distribution.
	73	AC_DEFINE(DEBUG_EXTENSIONS)
	74	AC_DEFINE(READER_EXTENSIONS)
	75
52cfc69b GH	76	dnl files which are destined for separate modules.
52cfc69b GH	77
afe5177e GH	78	if test "$enable_arrays" = yes; then
	79	LIBOBJS="$LIBOBJS ramap.o unif.o"
	80	AC_DEFINE(HAVE_ARRAYS)
	81	fi
	82
52cfc69b GH	83	if test "$enable_posix" = yes; then
	84	LIBOBJS="$LIBOBJS filesys.o posix.o"
	85	AC_DEFINE(HAVE_POSIX)
	86	fi
	87
	88	if test "$enable_networking" = yes; then
	89	LIBOBJS="$LIBOBJS net_db.o socket.o"
	90	AC_DEFINE(HAVE_NETWORKING)
	91	fi
	92
3a629497 JB	93	#--------------------------------------------------------------------
3a629497 JB	94
b7f27d64 MV	95	AC_LIBLTDL_CONVENIENCE
	96	AC_CONFIG_SUBDIRS(libltdl)
	97
3a629497 JB	98	AC_PROG_CC
3a629497 JB	99	AC_PROG_CPP
b7f27d64	100	AC_LIBTOOL_DLOPEN
3a629497 JB	101
	102	AC_AIX
	103	AC_ISC_POSIX
	104	AC_MINIX
	105
e40ffcb6	106	AM_PROG_CC_STDC
9da7f717	107	AM_PROG_LIBTOOL
e40ffcb6	108
3a629497	109	AC_C_CONST
5e9345c3	110	AC_C_INLINE
9dec9737 MD	111	AC_CHECK_SIZEOF(int)
	112	AC_CHECK_SIZEOF(long)
	113	AC_CACHE_CHECK([for long longs], scm_cv_long_longs,
	114	AC_TRY_COMPILE(,
	115	[long long a],
	116	scm_cv_long_longs=yes,
	117	scm_cv_long_longs=no))
	118	if test "$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 $ac_cv_func_connect = no; then
	140	AC_CHECK_LIB(socket, connect)
	141	fi
5ee74cec	142
b7f27d64	143	# Check for dynamic linking
5852c051	144
b7f27d64 MV	145	use_modules=yes
	146	AC_ARG_WITH(modules,
	147	[ --with-modules[=FILES] Add support for dynamic modules],
	148	use_modules="$withval")
	149	test -z "$use_modules" && use_modules=yes
	150	DLPREOPEN=
	151	if test "$use_modules" != no; then
a4995389	152	AC_DEFINE(DYNAMIC_LINKING)
b7f27d64 MV	153	if test "$use_modules" = yes; then
	154	DLPREOPEN="-dlpreopen force"
	155	else
	156	DLPREOPEN="-export-dynamic"
	157	for module in $use_modules; do
	158	DLPREOPEN="$DLPREOPEN -dlopen $module"
	159	done
	160	fi
a4995389	161	fi
b7f27d64 MV	162	AC_SUBST(INCLTDL)
	163	AC_SUBST(LIBLTDL)
	164	AC_SUBST(DLPREOPEN)
5852c051	165
d831b039	166	AC_CHECK_FUNCS(ctermid ftime fchown 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	167
777b022a JB	168	### Some systems don't declare some functions. On such systems, we
	169	### need to at least provide our own K&R-style declarations.
	170
	171	### GUILE_FUNC_DECLARED(function, headerfile)
	172
	173	### Check for a declaration of FUNCTION in HEADERFILE; if it is
	174	### not there, #define MISSING_FUNCTION_DECL.
	175	AC_DEFUN(GUILE_FUNC_DECLARED, [
fc342a63	176	AC_CACHE_CHECK(for $1 declaration, guile_cv_func_$1_declared,
777b022a	177	AC_EGREP_HEADER($1, $2,
fc342a63 JB	178	guile_cv_func_$1_declared=yes,
	179	guile_cv_func_$1_declared=no))
	180	if test [x$guile_cv_func_]$1[_declared] = xno; then
777b022a JB	181	AC_DEFINE([MISSING_]translit($1, [a-z], [A-Z])[_DECL])
	182	fi
	183	])
	184
	185	GUILE_FUNC_DECLARED(strptime, time.h)
	186	GUILE_FUNC_DECLARED(bzero, string.h)
c31bfb85	187	GUILE_FUNC_DECLARED(sleep, unistd.h)
777b022a	188	GUILE_FUNC_DECLARED(usleep, unistd.h)
e1a191a8	189
da753252 JB	190	### On some systems usleep has no return value. If it does have one,
da753252 JB	191	### we'd like to return it; otherwise, we'll fake it.
fc342a63	192	AC_CACHE_CHECK([return type of usleep], guile_cv_func_usleep_return_type,
c43f86c1	193	[AC_EGREP_HEADER(changequote(<, >)<void[ ]+usleep>changequote([, ]),
fc342a63 JB	194	/usr/include/unistd.h,
	195	[guile_cv_func_usleep_return_type=void],
	196	[guile_cv_func_usleep_return_type=int])])
	197	case "$guile_cv_func_usleep_return_type" in
	198	"void" )
	199	AC_DEFINE(USLEEP_RETURNS_VOID)
	200	;;
	201	esac
	202
da88f0cb JB	203	dnl <GNU-WIN32 hacks>
	204
	205	AC_CHECK_HEADER(sys/un.h, have_sys_un_h=1)
	206	if test -n "$have_sys_un_h" ; then
	207	AC_DEFINE(HAVE_UNIX_DOMAIN_SOCKETS)
	208	fi
	209
	210	AC_CHECK_FUNCS(socketpair getgroups setpwent pause tzset)
	211
f4e5b810 GH	212	dnl I don't know what this prefixing of cygwin32_ is for.
	213	dnl scmconfig.h wasn't updated with the test results.
	214	dnl so use AC_CHECK_FUNCS for now.
	215
	216	dnl how about:
	217	dnl save confdefs.h
	218	dnl if test $ac_cv_cigwin = yes; then
	219	dnl modify confdefs.h
	220	dnl fi
	221	dnl AC_CHECK_FUNCS...
	222	dnl restore confdefs.h
	223
	224	dnl cp confdefs.h confdefs.h.bak
5c11cc9d	225	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	226	dnl cp confdefs.h.bak confdefs.h
	227	dnl cat >> confdefs.h << EOF
	228	dnl #ifdef __CYGWIN32__
	229	dnl #define $func cygwin32_$func
	230	dnl #endif
	231	dnl EOF
	232	dnl AC_CHECK_FUNC($func)
	233	dnl done
	234	dnl cp confdefs.h.bak confdefs.h
	235
219a5a5b JB	236	AC_CHECK_FUNCS(sethostent gethostent endhostent dnl
	237	setnetent getnetent endnetent dnl
	238	setprotoent getprotoent endprotoent dnl
	239	setservent getservent endservent dnl
5c11cc9d GH	240	getnetbyaddr getnetbyname dnl
5c11cc9d GH	241	inet_lnaof inet_makeaddr inet_netof hstrerror)
da88f0cb JB	242
	243	dnl </GNU-WIN32 hacks>
	244
38c1d3c4 GH	245	AC_MSG_CHECKING(whether localtime caches TZ)
	246	AC_CACHE_VAL(guile_cv_localtime_cache,
	247	[if test x$ac_cv_func_tzset = xyes; then
	248	AC_TRY_RUN([#include <time.h>
	249	#if STDC_HEADERS
	250	# include <stdlib.h>
	251	#endif
	252	extern char **environ;
	253	unset_TZ ()
	254	{
	255	char from, to;
	256	for (to = from = environ; (to = from); from++)
	257	if (! (to[0][0] == 'T' && to[0][1] == 'Z' && to[0][2] == '='))
	258	to++;
	259	}
	260	char TZ_GMT0[] = "TZ=GMT0";
	261	char TZ_PST8[] = "TZ=PST8";
	262	main()
	263	{
	264	time_t now = time ((time_t *) 0);
	265	int hour_GMT0, hour_unset;
	266	if (putenv (TZ_GMT0) != 0)
	267	exit (1);
	268	hour_GMT0 = localtime (&now)->tm_hour;
	269	unset_TZ ();
	270	hour_unset = localtime (&now)->tm_hour;
	271	if (putenv (TZ_PST8) != 0)
	272	exit (1);
	273	if (localtime (&now)->tm_hour == hour_GMT0)
	274	exit (1);
	275	unset_TZ ();
	276	if (localtime (&now)->tm_hour != hour_unset)
	277	exit (1);
	278	exit (0);
	279	}], guile_cv_localtime_cache=no, guile_cv_localtime_cache=yes,
	280	[# If we have tzset, assume the worst when cross-compiling.
	281	guile_cv_localtime_cache=yes])
	282	else
	283	# If we lack tzset, report that localtime does not cache TZ,
	284	# since we can't invalidate the cache if we don't have tzset.
	285	guile_cv_localtime_cache=no
	286	fi])dnl
	287	AC_MSG_RESULT($guile_cv_localtime_cache)
	288	if test $guile_cv_localtime_cache = yes; then
	289	AC_DEFINE(LOCALTIME_CACHE)
	290	fi
	291
7ee92fce GH	292	dnl Test whether system calls are restartable by default on the
	293	dnl current system. If they are not, we put a loop around every system
	294	dnl call to check for EINTR (see SCM_SYSCALL) and do not attempt to
	295	dnl change from the default behaviour. On the other hand, if signals
	296	dnl are restartable then the loop is not installed and when libguile
	297	dnl initialises it also resets the behaviour of each signal to cause a
	298	dnl restart (in case a different runtime had a different default
	299	dnl behaviour for some reason: e.g., different versions of linux seem
	300	dnl to behave differently.)
	301
08b8c694	302	AC_SYS_RESTARTABLE_SYSCALLS
e1a191a8	303
52cfc69b GH	304	if test "$enable_regex" = yes; then
	305	if test "$ac_cv_header_regex_h" = yes \|\|
	306	test "$ac_cv_header_rxposix_h" = yes \|\|
	307	test "$ac_cv_header_rx_rxposix_h" = yes; then
	308	GUILE_NAMED_CHECK_FUNC(regcomp, norx, [LIBOBJS="regex-posix.o $LIBOBJS"],
	309	[AC_CHECK_LIB(rx, main)
	310	GUILE_NAMED_CHECK_FUNC(regcomp, rx, [LIBOBJS="regex-posix.o $LIBOBJS"])]
	311	)
	312	dnl The following should not be necessary, but for some reason
	313	dnl autoheader misses it if we don't include it!
	314	if test "$ac_cv_func_regcomp_norx" = yes \|\|
	315	test "$ac_cv_func_regcomp_rx" = yes; then
	316	AC_DEFINE(HAVE_REGCOMP)
	317	fi
	318	fi
da88f0cb	319	fi
8e1bfcd0	320
dbbbec40	321	AC_REPLACE_FUNCS(inet_aton putenv strerror memmove)
3a629497	322
4a5fa91c TP	323	# When testing for the presence of alloca, we need to add alloca.o
	324	# explicitly to LIBOBJS to make sure that it is translated to
	325	# `alloca.lo' for libtool later on. This can and should be done more cleanly.
3a629497	326	AC_FUNC_ALLOCA
4a5fa91c	327	if test "$ALLOCA" = "alloca.o"; then LIBOBJS="alloca.o $LIBOBJS"; fi
3a629497 JB	328
	329	AC_STRUCT_ST_RDEV
	330	AC_STRUCT_ST_BLKSIZE
075edbde JB	331
	332	# We could use AC_STRUCT_ST_BLOCKS here, but that adds fileblocks.o to
	333	# LIBOBJS, which we don't need. This seems more direct.
	334	AC_CACHE_CHECK([for st_blocks in struct stat], ac_cv_struct_st_blocks,
	335	[AC_TRY_COMPILE([#include <sys/types.h>
	336	#include <sys/stat.h>], [struct stat s; s.st_blocks;],
	337	ac_cv_struct_st_blocks=yes, ac_cv_struct_st_blocks=no)])
	338	if test $ac_cv_struct_st_blocks = yes; then
	339	AC_DEFINE(HAVE_ST_BLOCKS)
	340	fi
	341
fd02f2ad MD	342	AC_CACHE_CHECK([for S_ISLNK in sys/stat.h], ac_cv_macro_S_ISLNK,
	343	[AC_TRY_CPP([#include <sys/stat.h>
	344	#ifndef S_ISLNK
	345	#error no S_ISLNK
	346	#endif],
	347	ac_cv_macro_S_ISLNK=yes,
	348	ac_cv_macro_S_ISLNK=no)])
	349	if test $ac_cv_macro_S_ISLNK = yes; then
	350	AC_DEFINE(HAVE_S_ISLNK)
	351	fi
	352
3a629497 JB	353	AC_STRUCT_TIMEZONE
	354	GUILE_STRUCT_UTIMBUF
	355
3a629497 JB	356	#--------------------------------------------------------------------
	357	#
	358	# Which way does the stack grow?
	359	#
	360	#--------------------------------------------------------------------
	361
	362	AC_TRY_RUN(aux (l) unsigned long l;
	363	{ int x; exit (l >= ((unsigned long)&x)); }
	364	main () { int q; aux((unsigned long)&q); },
	365	AC_DEFINE(SCM_STACK_GROWS_UP),,AC_MSG_WARN(Guessing that stack grows down -- see scmconfig.h.in))
	366
3a171311 JB	367	AC_CACHE_CHECK([whether floats fit in longs], guile_cv_type_float_fits_long,
	368	[AC_TRY_RUN([main () { exit (sizeof(float) > sizeof(long)); }],
	369	[guile_cv_type_float_fits_long=yes],
	370	[guile_cv_type_float_fits_long=no],
	371	[guile_cv_type_float_fits_long=guess-yes])])
	372	case $guile_cv_type_float_fits_long in
	373	"yes" )
	374	AC_DEFINE(SCM_SINGLES)
	375	;;
	376	"guess-yes" )
	377	AC_DEFINE(SCM_SINGLES)
	378	AC_MSG_WARN([guessing that sizeof(long) == sizeof(float)])
	379	AC_MSG_WARN([see SCM_SINGLES in scmconfig.h.in])
	380	;;
	381	esac
3a629497	382
3a629497 JB	383
	384	AC_MSG_CHECKING(for struct linger)
	385	AC_CACHE_VAL(scm_cv_struct_linger,
	386	AC_TRY_COMPILE([
	387	#include <sys/types.h>
	388	#include <sys/socket.h>],
	389	[struct linger lgr; lgr.l_linger = 100],
	390	scm_cv_struct_linger="yes",
	391	scm_cv_struct_linger="no"))
	392	AC_MSG_RESULT($scm_cv_struct_linger)
	393	if test $scm_cv_struct_linger = yes; then
	394	AC_DEFINE(HAVE_STRUCT_LINGER)
	395	fi
3a629497 JB	396
	397	#--------------------------------------------------------------------
	398	#
	399	# Flags for thread support
	400	#
	401	#--------------------------------------------------------------------
	402
539c89a1 JB	403	### What thread package has the user asked for?
	404	AC_ARG_WITH(threads, [ --with-threads thread interface],
	405	, with_threads=no)
	406
	407	### Turn $with_threads into either the name of a threads package, like
	408	### `qt', or `no', meaning that threads should not be supported.
e0f54bcc	409	AC_MSG_CHECKING(whether to support threads)
539c89a1 JB	410	case "$with_threads" in
	411	"yes" \| "qt" \| "coop" \| "")
	412	with_threads=qt
	413	;;
	414	"no" )
	415	;;
	416	* )
	417	AC_MSG_ERROR(invalid value for --with-threads: $with_threads)
	418	;;
	419	esac
e0f54bcc	420	AC_MSG_RESULT($with_threads)
3a629497	421
539c89a1 JB	422	## Make sure the threads package we've chosen is actually supported on
	423	## the present platform.
	424	case "${with_threads}" in
	425	"qt" )
	426	## This configures the QuickThreads package, and sets or clears
	427	## the THREAD_PACKAGE variable if qthreads don't configure
	428	## correctly.
	429	QTHREADS_CONFIGURE
	430	;;
	431	esac
3a629497	432
539c89a1 JB	433	## If we're using threads, bring in some other parts of Guile which
	434	## work with them.
	435	if test "${THREAD_PACKAGE}" != "" ; then
	436	AC_DEFINE(USE_THREADS, 1)
3a629497	437
539c89a1 JB	438	## Include the Guile thread interface in the library...
539c89a1 JB	439	LIBOBJS="$LIBOBJS threads.o"
933a7411	440
539c89a1 JB	441	## ... and tell it which package to talk to.
	442	case "${THREAD_PACKAGE}" in
	443	"QT" )
	444	AC_DEFINE(USE_COOP_THREADS, 1)
	445	;;
	446	* )
	447	AC_MSG_ERROR(invalid value for THREAD_PACKAGE: ${THREAD_PACKAGE})
	448	;;
	449	esac
	450
	451	## Bring in scm_internal_select, if appropriate.
	452	if test $ac_cv_func_gettimeofday = yes &&
	453	test $ac_cv_func_select = yes; then
	454	LIBOBJS="$LIBOBJS iselect.o"
	455	AC_DEFINE(GUILE_ISELECT, 1)
	456	fi
933a7411 MD	457	fi
933a7411 MD	458
3a629497 JB	459	## If we're using GCC, ask for aggressive warnings.
3a629497 JB	460	case "$GCC" in
99be3450	461	yes )
0a1b8b15 JB	462	## We had -Wstrict-prototypes in here for a bit, but Guile does too
	463	## much stuff with generic function pointers for that to really be
	464	## less than exasperating.
aee8ca3f GH	465	## -Wpointer-arith was here too, but something changed in gcc/glibc
	466	## and it became equally exasperating (gcc 2.95 and/or glibc 2.1.2).
	467	CFLAGS="$CFLAGS -Wall -Wmissing-prototypes" ;;
3a629497 JB	468	esac
	469
	470	AC_PROG_AWK
	471
	472	## If we're creating a shared library (using libtool!), then we'll
	473	## need to generate a list of .lo files corresponding to the .o files
	474	## given in LIBOBJS. We'll call it LIBLOBJS.
	475	LIBLOBJS="`echo ${LIBOBJS} \| sed 's/\.o/.lo/g'`"
	476
7c86ae05 JB	477	AC_SUBST(GUILE_MAJOR_VERSION)
	478	AC_SUBST(GUILE_MINOR_VERSION)
	479	AC_SUBST(GUILE_VERSION)
539c89a1	480
bcc695e3	481	dnl Tell guile-config what flags guile users should link against.
539c89a1	482	GUILE_LIBS="$LDFLAGS $THREAD_LIBS_INSTALLED $LIBS"
daa4f38c	483	AC_SUBST(GUILE_LIBS)
7c86ae05	484
3a629497 JB	485	AC_SUBST(AWK)
	486	AC_SUBST(LIBLOBJS)
	487
951afd33	488	AC_OUTPUT([Makefile libguile/Makefile libguile/guile-snarf libguile/guile-doc-snarf libguile/guile-func-name-check 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 libguile/guile-doc-snarf libguile/guile-func-name-check])
0f2d19dd	489
3a629497 JB	490	dnl Local Variables:
	491	dnl comment-start: "dnl "
	492	dnl comment-end: ""
	493	dnl comment-start-skip: "\\bdnl\\b\\s *"
951afd33	494	dnl