[bpt/guile.git] / configure.in

dnl   configuration script for Guile
dnl   Process this file with autoconf to produce configure.
dnl
dnl  Copyright (C) 1998 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)

#--------------------------------------------------------------------
#
# 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 "$enableval" = y || test "$enableval" = yes; then
  AC_DEFINE(GUILE_DEBUG)
fi

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)

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

AC_PROG_CC
AC_PROG_CPP
AM_PROG_LIBTOOL

AC_AIX
AC_ISC_POSIX
AC_MINIX

AM_PROG_CC_STDC

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(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 strftime strptime symlink sync tcgetpgrp tcsetpgrp times uname waitpid bzero strdup system usleep)

### 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 ; 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 inet_lnaof inet_makeaddr inet_netof)

dnl </GNU-WIN32 hacks>

AC_CACHE_CHECK([for restartable system calls], scm_cv_restarts,
	if test $ac_cv_func_sigaction = yes; then
		[AC_TRY_COMPILE([#include <signal.h>],
				[int a = SA_RESTART],
				scm_cv_restarts=yes,
				scm_cv_restarts=no)]
	else
		scm_cv_restarts=no
	fi)
if test $scm_cv_restarts = yes; then
	AC_DEFINE(HAVE_RESTARTS)
fi

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

AC_REPLACE_FUNCS(inet_aton putenv strerror)

# 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_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
	
#--------------------------------------------------------------------
#
# How can you violate a stdio abstraction by setting a stream's fd?
#
#--------------------------------------------------------------------

AC_MSG_CHECKING(how to set a stream file descriptor)
AC_CACHE_VAL(scm_cv_fd_setter,
	AC_TRY_COMPILE([#include <stdio.h>],
			[stdout->_file = 1],
			scm_cv_fd_setter="_file",
	AC_TRY_COMPILE([#include <stdio.h>],
			[stdout->__file = 1],
			scm_cv_fd_setter="__file",
	AC_TRY_COMPILE([#include <stdio.h>],
			[stdout->_fileno = 1],
			scm_cv_fd_setter="_fileno",
			scm_cv_fd_setter=""))))

if test "$scm_cv_fd_setter"; then
	AC_MSG_RESULT($scm_cv_fd_setter)
	AC_DEFINE_UNQUOTED(FD_SETTER, $scm_cv_fd_setter)
else
	AC_MSG_RESULT(we couldn't do it!)
fi

#--------------------------------------------------------------------
# How to find out whether a FILE structure contains buffered data.
# From Tk we have the following list:
#		_cnt:		Most UNIX systems
#		__cnt:		HPUX and SCO
#		_r:		BSD
#		readCount:	Sprite
#	Or, in GNU libc there are two fields, _gptr and _egptr, which
#	have to be compared.
#	These can also be known as _IO_read_ptr and _IO_read_end.
#--------------------------------------------------------------------

AC_MSG_CHECKING(how to get buffer char count from FILE structure)
AC_CACHE_VAL(scm_cv_struct_file_count,
	AC_TRY_COMPILE([#include <stdio.h>],
			[FILE *f = stdin; f->_cnt = 0],
			scm_cv_struct_file_count="_cnt",
	AC_TRY_COMPILE([#include <stdio.h>],
			[FILE *f = stdin; f->__cnt = 0],
			scm_cv_struct_file_count="__cnt",
	AC_TRY_COMPILE([#include <stdio.h>],
			[FILE *f = stdin; f->_r = 0],
			scm_cv_struct_file_count="_r",
	AC_TRY_COMPILE([#include <stdio.h>],
			[FILE *f = stdin; f->readCount = 0],
			scm_cv_struct_file_count="readCount",
	scm_cv_struct_file_count="")))))
if test "$scm_cv_struct_file_count"; then
	AC_MSG_RESULT($scm_cv_struct_file_count)
	AC_DEFINE_UNQUOTED(FILE_CNT_FIELD, $scm_cv_struct_file_count)
else
AC_CACHE_VAL(scm_cv_struct_file_gptr,
	AC_TRY_COMPILE([#include <stdio.h>],
			[FILE *f = stdin; f->_gptr = f->egptr;],
			scm_cv_struct_file_gptr=1,
	scm_cv_struct_file_gptr=""))
if test "$scm_cv_struct_gptr"; then
	AC_MSG_RESULT(gptr)
	AC_DEFINE_UNQUOTED(FILE_CNT_GPTR, $scm_cv_struct_file_gptr)
else
AC_CACHE_VAL(scm_cv_struct_file_readptr,
	AC_TRY_COMPILE([#include <stdio.h>],
			[FILE *f = stdin; f->_IO_read_ptr = f->_IO_read_end;],
			scm_cv_struct_file_readptr=1))
if test "$scm_cv_struct_file_readptr"; then
	AC_MSG_RESULT(read_ptr)
	AC_DEFINE_UNQUOTED(FILE_CNT_READPTR, $scm_cv_struct_file_readptr)
else
	AC_MSG_RESULT(we couldn't do it!)
fi
fi
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 "$GCC" in
  yes )
    ## We had -Wstrict-prototypes in here for a bit, but Guile does too
    ## much stuff with generic function pointers for that to really be
    ## less than exasperating.
    CFLAGS="$CFLAGS -Wall -Wpointer-arith -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)

dnl timestamping the interpreter and scheme libraries:
dnl
dnl Help us notice when we're running one version of the Guile
dnl interpreter against a different version of the ice-9 Scheme code.
dnl This will definitely detect version skew due to differing
dnl snapshots and releases, but may not catch skew for the developers.
dnl Hopefully it will not detect skew when there is none; if that
dnl happens, the warnings will be useless, and we should remove this.
GUILE_STAMP="`date`"
AC_SUBST(GUILE_STAMP)

AC_SUBST(AWK)
AC_SUBST(LIBLOBJS)

AC_OUTPUT([Makefile libguile/Makefile libguile/guile-snarf libguile/versiondat.h ice-9/Makefile ice-9/version.scm qt/Makefile qt/qt.h qt/md/Makefile qt/time/Makefile guile-config/Makefile doc/Makefile], [chmod +x libguile/guile-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 JB	3	dnl
	4	dnl Copyright (C) 1998 Free Software Foundation, Inc.
	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, $VERSION, no-define)
15ae1bee	26	AM_MAINTAINER_MODE
3a629497	27	AM_CONFIG_HEADER(libguile/scmconfig.h)
2d26def0	28
3a629497 JB	29	#--------------------------------------------------------------------
	30	#
	31	# User options
	32	#
	33	#--------------------------------------------------------------------
86789f9b	34
3a629497	35	AC_ARG_ENABLE(dynamic-linking,
af8865f7 JB	36	[ --enable-dynamic-linking Include support for dynamic linking],,
af8865f7 JB	37	enable_dynamic_linking=yes)
3a629497 JB	38
	39	AC_ARG_ENABLE(guile-debug,
	40	[ --enable-guile-debug Include internal debugging functions])
	41	if test "$enableval" = y \|\| test "$enableval" = yes; then
	42	AC_DEFINE(GUILE_DEBUG)
	43	fi
	44
c176b92b JB	45	dnl The --disable-debug used to control these two. But now they are
	46	dnl a required part of the distribution.
	47	AC_DEFINE(DEBUG_EXTENSIONS)
	48	AC_DEFINE(READER_EXTENSIONS)
	49
3a629497 JB	50	#--------------------------------------------------------------------
	51
	52	AC_PROG_CC
	53	AC_PROG_CPP
	54	AM_PROG_LIBTOOL
	55
	56	AC_AIX
	57	AC_ISC_POSIX
	58	AC_MINIX
	59
e40ffcb6 JB	60	AM_PROG_CC_STDC
e40ffcb6 JB	61
3a629497	62	AC_C_CONST
5e9345c3	63	AC_C_INLINE
9dec9737 MD	64	AC_CHECK_SIZEOF(int)
	65	AC_CHECK_SIZEOF(long)
	66	AC_CACHE_CHECK([for long longs], scm_cv_long_longs,
	67	AC_TRY_COMPILE(,
	68	[long long a],
	69	scm_cv_long_longs=yes,
	70	scm_cv_long_longs=no))
	71	if test "$scm_cv_long_longs" = yes; then
	72	AC_DEFINE(HAVE_LONG_LONGS)
	73	fi
3a629497 JB	74
	75	AC_HEADER_STDC
	76	AC_HEADER_DIRENT
	77	AC_HEADER_TIME
	78	AC_HEADER_SYS_WAIT
e9cd5d2f	79	AC_CHECK_HEADERS(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	80	GUILE_HEADER_LIBC_WITH_UNISTD
	81
	82	AC_TYPE_GETGROUPS
	83	AC_TYPE_SIGNAL
	84	AC_TYPE_MODE_T
	85
5852c051	86	AC_CHECK_LIB(m, main)
4c787b52	87	AC_CHECK_FUNCS(gethostbyname)
5852c051 JB	88	if test $ac_cv_func_gethostbyname = no; then
	89	AC_CHECK_LIB(nsl, gethostbyname)
	90	fi
4c787b52	91	AC_CHECK_FUNCS(connect)
5852c051 JB	92	if test $ac_cv_func_connect = no; then
	93	AC_CHECK_LIB(socket, connect)
	94	fi
5ee74cec	95
90fcac06 JB	96	# Checks for dynamic linking
90fcac06 JB	97
5852c051 JB	98	if test "$enable_dynamic_linking" = "yes"; then
	99
	100	AC_CHECK_LIB(dl,dlopen)
	101	if test "$ac_cv_lib_dl_dlopen" = "yes"; then
4c787b52	102	AC_CHECK_FUNCS(dlopen)
5852c051 JB	103	AC_DEFINE(DYNAMIC_LINKING)
	104	else
	105	AC_CHECK_LIB(dld,dld_link)
	106	if test "$ac_cv_lib_dld_dld_link" = "yes"; then
5852c051 JB	107	AC_DEFINE(DYNAMIC_LINKING)
5852c051 JB	108	else
4c787b52	109	AC_CHECK_FUNCS(shl_load)
5852c051 JB	110	if test "$ac_cv_func_shl_load" = "yes"; then
5852c051 JB	111	AC_DEFINE(DYNAMIC_LINKING)
a4995389	112	else
4c787b52	113	AC_CHECK_FUNCS(dlopen)
a4995389 MV	114	if test "$ac_cv_func_dlopen" = "yes"; then
	115	AC_DEFINE(DYNAMIC_LINKING)
	116	fi
5852c051 JB	117	fi
	118	fi
	119	fi
	120
	121	fi
	122
2a0d7176	123	GUILE_DLSYM_USCORE
5852c051	124
219a5a5b	125	AC_CHECK_FUNCS(ctermid ftime getcwd geteuid gettimeofday lstat mkdir mknod nice readlink rename rmdir select setegid seteuid setlocale setpgid setsid sigaction strftime strptime symlink sync tcgetpgrp tcsetpgrp times uname waitpid bzero strdup system usleep)
64e121dc	126
777b022a JB	127	### Some systems don't declare some functions. On such systems, we
	128	### need to at least provide our own K&R-style declarations.
	129
	130	### GUILE_FUNC_DECLARED(function, headerfile)
	131
	132	### Check for a declaration of FUNCTION in HEADERFILE; if it is
	133	### not there, #define MISSING_FUNCTION_DECL.
	134	AC_DEFUN(GUILE_FUNC_DECLARED, [
fc342a63	135	AC_CACHE_CHECK(for $1 declaration, guile_cv_func_$1_declared,
777b022a	136	AC_EGREP_HEADER($1, $2,
fc342a63 JB	137	guile_cv_func_$1_declared=yes,
	138	guile_cv_func_$1_declared=no))
	139	if test [x$guile_cv_func_]$1[_declared] = xno; then
777b022a JB	140	AC_DEFINE([MISSING_]translit($1, [a-z], [A-Z])[_DECL])
	141	fi
	142	])
	143
	144	GUILE_FUNC_DECLARED(strptime, time.h)
	145	GUILE_FUNC_DECLARED(bzero, string.h)
c31bfb85	146	GUILE_FUNC_DECLARED(sleep, unistd.h)
777b022a	147	GUILE_FUNC_DECLARED(usleep, unistd.h)
e1a191a8	148
da753252 JB	149	### On some systems usleep has no return value. If it does have one,
da753252 JB	150	### we'd like to return it; otherwise, we'll fake it.
fc342a63	151	AC_CACHE_CHECK([return type of usleep], guile_cv_func_usleep_return_type,
c43f86c1	152	[AC_EGREP_HEADER(changequote(<, >)<void[ ]+usleep>changequote([, ]),
fc342a63 JB	153	/usr/include/unistd.h,
	154	[guile_cv_func_usleep_return_type=void],
	155	[guile_cv_func_usleep_return_type=int])])
	156	case "$guile_cv_func_usleep_return_type" in
	157	"void" )
	158	AC_DEFINE(USLEEP_RETURNS_VOID)
	159	;;
	160	esac
	161
da88f0cb JB	162	dnl <GNU-WIN32 hacks>
	163
	164	AC_CHECK_HEADER(sys/un.h, have_sys_un_h=1)
	165	if test -n "$have_sys_un_h" ; then
	166	AC_DEFINE(HAVE_UNIX_DOMAIN_SOCKETS)
	167	fi
	168
	169	AC_CHECK_FUNCS(socketpair getgroups setpwent pause tzset)
	170
f4e5b810 GH	171	dnl I don't know what this prefixing of cygwin32_ is for.
	172	dnl scmconfig.h wasn't updated with the test results.
	173	dnl so use AC_CHECK_FUNCS for now.
	174
	175	dnl how about:
	176	dnl save confdefs.h
	177	dnl if test $ac_cv_cigwin = yes; then
	178	dnl modify confdefs.h
	179	dnl fi
	180	dnl AC_CHECK_FUNCS...
	181	dnl restore confdefs.h
	182
	183	dnl cp confdefs.h confdefs.h.bak
219a5a5b	184	dnl for func in gethostent sethostent endhostent getnetent setnetent endnetent getprotoent setprotoent endprotoent getservent setservent endservent getnetbyaddr getnetbyname inet_lnaof inet_makeaddr inet_netof ; do
f4e5b810 GH	185	dnl cp confdefs.h.bak confdefs.h
	186	dnl cat >> confdefs.h << EOF
	187	dnl #ifdef __CYGWIN32__
	188	dnl #define $func cygwin32_$func
	189	dnl #endif
	190	dnl EOF
	191	dnl AC_CHECK_FUNC($func)
	192	dnl done
	193	dnl cp confdefs.h.bak confdefs.h
	194
219a5a5b JB	195	AC_CHECK_FUNCS(sethostent gethostent endhostent dnl
	196	setnetent getnetent endnetent dnl
	197	setprotoent getprotoent endprotoent dnl
	198	setservent getservent endservent dnl
	199	getnetbyaddr getnetbyname inet_lnaof inet_makeaddr inet_netof)
da88f0cb JB	200
	201	dnl </GNU-WIN32 hacks>
	202
e1a191a8 GH	203	AC_CACHE_CHECK([for restartable system calls], scm_cv_restarts,
	204	if test $ac_cv_func_sigaction = yes; then
	205	[AC_TRY_COMPILE([#include <signal.h>],
	206	[int a = SA_RESTART],
	207	scm_cv_restarts=yes,
	208	scm_cv_restarts=no)]
	209	else
	210	scm_cv_restarts=no
	211	fi)
	212	if test $scm_cv_restarts = yes; then
	213	AC_DEFINE(HAVE_RESTARTS)
	214	fi
	215
e9cd5d2f MD	216	if test "$ac_cv_header_regex_h" = yes \|\|
	217	test "$ac_cv_header_rxposix_h" = yes \|\|
	218	test "$ac_cv_header_rx_rxposix_h" = yes; then
0b89e78e MD	219	GUILE_NAMED_CHECK_FUNC(regcomp, norx, [LIBOBJS="regex-posix.o $LIBOBJS"],
	220	[AC_CHECK_LIB(rx, main)
	221	GUILE_NAMED_CHECK_FUNC(regcomp, rx, [LIBOBJS="regex-posix.o $LIBOBJS"])]
	222	)
e9cd5d2f MD	223	dnl The following should not be necessary, but for some reason
e9cd5d2f MD	224	dnl autoheader misses it if we don't include it!
0b89e78e MD	225	if test "$ac_cv_func_regcomp_norx" = yes \|\|
0b89e78e MD	226	test "$ac_cv_func_regcomp_rx" = yes; then
e9cd5d2f MD	227	AC_DEFINE(HAVE_REGCOMP)
e9cd5d2f MD	228	fi
da88f0cb	229	fi
8e1bfcd0	230
3a629497 JB	231	AC_REPLACE_FUNCS(inet_aton putenv strerror)
3a629497 JB	232
4a5fa91c TP	233	# When testing for the presence of alloca, we need to add alloca.o
	234	# explicitly to LIBOBJS to make sure that it is translated to
	235	# `alloca.lo' for libtool later on. This can and should be done more cleanly.
3a629497	236	AC_FUNC_ALLOCA
4a5fa91c	237	if test "$ALLOCA" = "alloca.o"; then LIBOBJS="alloca.o $LIBOBJS"; fi
3a629497 JB	238
	239	AC_STRUCT_ST_RDEV
	240	AC_STRUCT_ST_BLKSIZE
075edbde JB	241
	242	# We could use AC_STRUCT_ST_BLOCKS here, but that adds fileblocks.o to
	243	# LIBOBJS, which we don't need. This seems more direct.
	244	AC_CACHE_CHECK([for st_blocks in struct stat], ac_cv_struct_st_blocks,
	245	[AC_TRY_COMPILE([#include <sys/types.h>
	246	#include <sys/stat.h>], [struct stat s; s.st_blocks;],
	247	ac_cv_struct_st_blocks=yes, ac_cv_struct_st_blocks=no)])
	248	if test $ac_cv_struct_st_blocks = yes; then
	249	AC_DEFINE(HAVE_ST_BLOCKS)
	250	fi
	251
3a629497 JB	252	AC_STRUCT_TIMEZONE
	253	GUILE_STRUCT_UTIMBUF
	254
3a629497 JB	255	#--------------------------------------------------------------------
	256	#
	257	# Which way does the stack grow?
	258	#
	259	#--------------------------------------------------------------------
	260
	261	AC_TRY_RUN(aux (l) unsigned long l;
	262	{ int x; exit (l >= ((unsigned long)&x)); }
	263	main () { int q; aux((unsigned long)&q); },
	264	AC_DEFINE(SCM_STACK_GROWS_UP),,AC_MSG_WARN(Guessing that stack grows down -- see scmconfig.h.in))
	265
3a171311 JB	266	AC_CACHE_CHECK([whether floats fit in longs], guile_cv_type_float_fits_long,
	267	[AC_TRY_RUN([main () { exit (sizeof(float) > sizeof(long)); }],
	268	[guile_cv_type_float_fits_long=yes],
	269	[guile_cv_type_float_fits_long=no],
	270	[guile_cv_type_float_fits_long=guess-yes])])
	271	case $guile_cv_type_float_fits_long in
	272	"yes" )
	273	AC_DEFINE(SCM_SINGLES)
	274	;;
	275	"guess-yes" )
	276	AC_DEFINE(SCM_SINGLES)
	277	AC_MSG_WARN([guessing that sizeof(long) == sizeof(float)])
	278	AC_MSG_WARN([see SCM_SINGLES in scmconfig.h.in])
	279	;;
	280	esac
3a629497	281
3a629497 JB	282
	283	AC_MSG_CHECKING(for struct linger)
	284	AC_CACHE_VAL(scm_cv_struct_linger,
	285	AC_TRY_COMPILE([
	286	#include <sys/types.h>
	287	#include <sys/socket.h>],
	288	[struct linger lgr; lgr.l_linger = 100],
	289	scm_cv_struct_linger="yes",
	290	scm_cv_struct_linger="no"))
	291	AC_MSG_RESULT($scm_cv_struct_linger)
	292	if test $scm_cv_struct_linger = yes; then
	293	AC_DEFINE(HAVE_STRUCT_LINGER)
	294	fi
	295
	296	#--------------------------------------------------------------------
	297	#
	298	# How can you violate a stdio abstraction by setting a stream's fd?
	299	#
	300	#--------------------------------------------------------------------
	301
	302	AC_MSG_CHECKING(how to set a stream file descriptor)
	303	AC_CACHE_VAL(scm_cv_fd_setter,
	304	AC_TRY_COMPILE([#include <stdio.h>],
	305	[stdout->_file = 1],
	306	scm_cv_fd_setter="_file",
fe75dfc5 JB	307	AC_TRY_COMPILE([#include <stdio.h>],
	308	[stdout->__file = 1],
	309	scm_cv_fd_setter="__file",
3a629497 JB	310	AC_TRY_COMPILE([#include <stdio.h>],
	311	[stdout->_fileno = 1],
	312	scm_cv_fd_setter="_fileno",
fe75dfc5	313	scm_cv_fd_setter=""))))
3a629497 JB	314
	315	if test "$scm_cv_fd_setter"; then
	316	AC_MSG_RESULT($scm_cv_fd_setter)
	317	AC_DEFINE_UNQUOTED(FD_SETTER, $scm_cv_fd_setter)
	318	else
	319	AC_MSG_RESULT(we couldn't do it!)
	320	fi
	321
	322	#--------------------------------------------------------------------
	323	# How to find out whether a FILE structure contains buffered data.
	324	# From Tk we have the following list:
	325	# _cnt: Most UNIX systems
fe75dfc5	326	# __cnt: HPUX and SCO
3a629497 JB	327	# _r: BSD
	328	# readCount: Sprite
	329	# Or, in GNU libc there are two fields, _gptr and _egptr, which
	330	# have to be compared.
	331	# These can also be known as _IO_read_ptr and _IO_read_end.
	332	#--------------------------------------------------------------------
	333
	334	AC_MSG_CHECKING(how to get buffer char count from FILE structure)
	335	AC_CACHE_VAL(scm_cv_struct_file_count,
	336	AC_TRY_COMPILE([#include <stdio.h>],
	337	[FILE *f = stdin; f->_cnt = 0],
	338	scm_cv_struct_file_count="_cnt",
fe75dfc5 JB	339	AC_TRY_COMPILE([#include <stdio.h>],
	340	[FILE *f = stdin; f->__cnt = 0],
	341	scm_cv_struct_file_count="__cnt",
3a629497 JB	342	AC_TRY_COMPILE([#include <stdio.h>],
	343	[FILE *f = stdin; f->_r = 0],
	344	scm_cv_struct_file_count="_r",
	345	AC_TRY_COMPILE([#include <stdio.h>],
	346	[FILE *f = stdin; f->readCount = 0],
	347	scm_cv_struct_file_count="readCount",
fe75dfc5	348	scm_cv_struct_file_count="")))))
3a629497 JB	349	if test "$scm_cv_struct_file_count"; then
	350	AC_MSG_RESULT($scm_cv_struct_file_count)
	351	AC_DEFINE_UNQUOTED(FILE_CNT_FIELD, $scm_cv_struct_file_count)
	352	else
	353	AC_CACHE_VAL(scm_cv_struct_file_gptr,
	354	AC_TRY_COMPILE([#include <stdio.h>],
	355	[FILE *f = stdin; f->_gptr = f->egptr;],
	356	scm_cv_struct_file_gptr=1,
	357	scm_cv_struct_file_gptr=""))
	358	if test "$scm_cv_struct_gptr"; then
	359	AC_MSG_RESULT(gptr)
	360	AC_DEFINE_UNQUOTED(FILE_CNT_GPTR, $scm_cv_struct_file_gptr)
	361	else
	362	AC_CACHE_VAL(scm_cv_struct_file_readptr,
	363	AC_TRY_COMPILE([#include <stdio.h>],
	364	[FILE *f = stdin; f->_IO_read_ptr = f->_IO_read_end;],
	365	scm_cv_struct_file_readptr=1))
	366	if test "$scm_cv_struct_file_readptr"; then
	367	AC_MSG_RESULT(read_ptr)
	368	AC_DEFINE_UNQUOTED(FILE_CNT_READPTR, $scm_cv_struct_file_readptr)
	369	else
	370	AC_MSG_RESULT(we couldn't do it!)
	371	fi
	372	fi
	373	fi
	374
	375	#--------------------------------------------------------------------
	376	#
	377	# Flags for thread support
	378	#
	379	#--------------------------------------------------------------------
	380
539c89a1 JB	381	### What thread package has the user asked for?
	382	AC_ARG_WITH(threads, [ --with-threads thread interface],
	383	, with_threads=no)
	384
	385	### Turn $with_threads into either the name of a threads package, like
	386	### `qt', or `no', meaning that threads should not be supported.
e0f54bcc	387	AC_MSG_CHECKING(whether to support threads)
539c89a1 JB	388	case "$with_threads" in
	389	"yes" \| "qt" \| "coop" \| "")
	390	with_threads=qt
	391	;;
	392	"no" )
	393	;;
	394	* )
	395	AC_MSG_ERROR(invalid value for --with-threads: $with_threads)
	396	;;
	397	esac
e0f54bcc	398	AC_MSG_RESULT($with_threads)
3a629497	399
539c89a1 JB	400	## Make sure the threads package we've chosen is actually supported on
	401	## the present platform.
	402	case "${with_threads}" in
	403	"qt" )
	404	## This configures the QuickThreads package, and sets or clears
	405	## the THREAD_PACKAGE variable if qthreads don't configure
	406	## correctly.
	407	QTHREADS_CONFIGURE
	408	;;
	409	esac
3a629497	410
539c89a1 JB	411	## If we're using threads, bring in some other parts of Guile which
	412	## work with them.
	413	if test "${THREAD_PACKAGE}" != "" ; then
	414	AC_DEFINE(USE_THREADS, 1)
3a629497	415
539c89a1 JB	416	## Include the Guile thread interface in the library...
539c89a1 JB	417	LIBOBJS="$LIBOBJS threads.o"
933a7411	418
539c89a1 JB	419	## ... and tell it which package to talk to.
	420	case "${THREAD_PACKAGE}" in
	421	"QT" )
	422	AC_DEFINE(USE_COOP_THREADS, 1)
	423	;;
	424	* )
	425	AC_MSG_ERROR(invalid value for THREAD_PACKAGE: ${THREAD_PACKAGE})
	426	;;
	427	esac
	428
	429	## Bring in scm_internal_select, if appropriate.
	430	if test $ac_cv_func_gettimeofday = yes &&
	431	test $ac_cv_func_select = yes; then
	432	LIBOBJS="$LIBOBJS iselect.o"
	433	AC_DEFINE(GUILE_ISELECT, 1)
	434	fi
933a7411 MD	435	fi
933a7411 MD	436
3a629497 JB	437	## If we're using GCC, ask for aggressive warnings.
3a629497 JB	438	case "$GCC" in
99be3450	439	yes )
0a1b8b15 JB	440	## We had -Wstrict-prototypes in here for a bit, but Guile does too
	441	## much stuff with generic function pointers for that to really be
	442	## less than exasperating.
	443	CFLAGS="$CFLAGS -Wall -Wpointer-arith -Wmissing-prototypes" ;;
3a629497 JB	444	esac
	445
	446	AC_PROG_AWK
	447
	448	## If we're creating a shared library (using libtool!), then we'll
	449	## need to generate a list of .lo files corresponding to the .o files
	450	## given in LIBOBJS. We'll call it LIBLOBJS.
	451	LIBLOBJS="`echo ${LIBOBJS} \| sed 's/\.o/.lo/g'`"
	452
7c86ae05 JB	453	AC_SUBST(GUILE_MAJOR_VERSION)
	454	AC_SUBST(GUILE_MINOR_VERSION)
	455	AC_SUBST(GUILE_VERSION)
539c89a1	456
bcc695e3	457	dnl Tell guile-config what flags guile users should link against.
539c89a1	458	GUILE_LIBS="$LDFLAGS $THREAD_LIBS_INSTALLED $LIBS"
daa4f38c	459	AC_SUBST(GUILE_LIBS)
7c86ae05 JB	460
	461	dnl timestamping the interpreter and scheme libraries:
	462	dnl
	463	dnl Help us notice when we're running one version of the Guile
	464	dnl interpreter against a different version of the ice-9 Scheme code.
	465	dnl This will definitely detect version skew due to differing
	466	dnl snapshots and releases, but may not catch skew for the developers.
	467	dnl Hopefully it will not detect skew when there is none; if that
	468	dnl happens, the warnings will be useless, and we should remove this.
	469	GUILE_STAMP="`date`"
	470	AC_SUBST(GUILE_STAMP)
3a629497 JB	471
	472	AC_SUBST(AWK)
	473	AC_SUBST(LIBLOBJS)
	474
0e6d926d	475	AC_OUTPUT([Makefile libguile/Makefile libguile/guile-snarf libguile/versiondat.h ice-9/Makefile ice-9/version.scm qt/Makefile qt/qt.h qt/md/Makefile qt/time/Makefile guile-config/Makefile doc/Makefile], [chmod +x libguile/guile-snarf])
0f2d19dd	476
3a629497 JB	477	dnl Local Variables:
	478	dnl comment-start: "dnl "
	479	dnl comment-end: ""
	480	dnl comment-start-skip: "\\bdnl\\b\\s *"
	481	dnl End: