[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_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
AC_CHECK_LIB(termcap, tgoto)
AC_CHECK_LIB(readline, readline)
AC_CHECK_FUNCS(rl_clear_signals rl_cleanup_after_signal)

AC_CACHE_CHECK([for rl_getc_function pointer in readline],
               ac_cv_var_rl_getc_function,
               [AC_TRY_LINK([
#include <stdio.h>
#include <readline/readline.h>],
                            [rl_getc_function;],
                            [ac_cv_var_rl_getc_function=yes],
                            [ac_cv_var_rl_getc_function=no])])
if test "$ac_cv_var_rl_getc_function" = "yes"; then
  AC_DEFINE(HAVE_RL_GETC_FUNCTION)
fi

if test $ac_cv_lib_readline_readline = yes -a $ac_cv_var_rl_getc_function = no; then
  echo 'Warning: libreadline is too old on your system.  Need >= 2.1.'
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 gethostent 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 sethostent endhostent getnetent setnetent endnetent getprotoent endprotoent getservent 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 endhostent getnetent setnetent endnetent getprotoent endprotoent getservent endservent 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
3a629497 JB	64
	65	AC_HEADER_STDC
	66	AC_HEADER_DIRENT
	67	AC_HEADER_TIME
	68	AC_HEADER_SYS_WAIT
e9cd5d2f	69	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	70	GUILE_HEADER_LIBC_WITH_UNISTD
	71
	72	AC_TYPE_GETGROUPS
	73	AC_TYPE_SIGNAL
	74	AC_TYPE_MODE_T
	75
5852c051	76	AC_CHECK_LIB(m, main)
4c787b52	77	AC_CHECK_FUNCS(gethostbyname)
5852c051 JB	78	if test $ac_cv_func_gethostbyname = no; then
	79	AC_CHECK_LIB(nsl, gethostbyname)
	80	fi
4c787b52	81	AC_CHECK_FUNCS(connect)
5852c051 JB	82	if test $ac_cv_func_connect = no; then
	83	AC_CHECK_LIB(socket, connect)
	84	fi
81e9e32f JB	85	AC_CHECK_LIB(termcap, tgoto)
81e9e32f JB	86	AC_CHECK_LIB(readline, readline)
bd69c3ab JB	87	AC_CHECK_FUNCS(rl_clear_signals rl_cleanup_after_signal)
	88
	89	AC_CACHE_CHECK([for rl_getc_function pointer in readline],
	90	ac_cv_var_rl_getc_function,
	91	[AC_TRY_LINK([
	92	#include <stdio.h>
	93	#include <readline/readline.h>],
	94	[rl_getc_function;],
	95	[ac_cv_var_rl_getc_function=yes],
	96	[ac_cv_var_rl_getc_function=no])])
402c4d4a JB	97	if test "$ac_cv_var_rl_getc_function" = "yes"; then
	98	AC_DEFINE(HAVE_RL_GETC_FUNCTION)
	99	fi
bd69c3ab JB	100
bd69c3ab JB	101	if test $ac_cv_lib_readline_readline = yes -a $ac_cv_var_rl_getc_function = no; then
c700db4f MD	102	echo 'Warning: libreadline is too old on your system. Need >= 2.1.'
c700db4f MD	103	fi
5852c051	104
90fcac06 JB	105	# Checks for dynamic linking
90fcac06 JB	106
5852c051 JB	107	if test "$enable_dynamic_linking" = "yes"; then
	108
	109	AC_CHECK_LIB(dl,dlopen)
	110	if test "$ac_cv_lib_dl_dlopen" = "yes"; then
4c787b52	111	AC_CHECK_FUNCS(dlopen)
5852c051 JB	112	AC_DEFINE(DYNAMIC_LINKING)
	113	else
	114	AC_CHECK_LIB(dld,dld_link)
	115	if test "$ac_cv_lib_dld_dld_link" = "yes"; then
5852c051 JB	116	AC_DEFINE(DYNAMIC_LINKING)
5852c051 JB	117	else
4c787b52	118	AC_CHECK_FUNCS(shl_load)
5852c051 JB	119	if test "$ac_cv_func_shl_load" = "yes"; then
5852c051 JB	120	AC_DEFINE(DYNAMIC_LINKING)
a4995389	121	else
4c787b52	122	AC_CHECK_FUNCS(dlopen)
a4995389 MV	123	if test "$ac_cv_func_dlopen" = "yes"; then
	124	AC_DEFINE(DYNAMIC_LINKING)
	125	fi
5852c051 JB	126	fi
	127	fi
	128	fi
	129
	130	fi
	131
2a0d7176	132	GUILE_DLSYM_USCORE
5852c051	133
95fc06d5	134	AC_CHECK_FUNCS(ctermid ftime getcwd geteuid gethostent 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	135
777b022a JB	136	### Some systems don't declare some functions. On such systems, we
	137	### need to at least provide our own K&R-style declarations.
	138
	139	### GUILE_FUNC_DECLARED(function, headerfile)
	140
	141	### Check for a declaration of FUNCTION in HEADERFILE; if it is
	142	### not there, #define MISSING_FUNCTION_DECL.
	143	AC_DEFUN(GUILE_FUNC_DECLARED, [
fc342a63	144	AC_CACHE_CHECK(for $1 declaration, guile_cv_func_$1_declared,
777b022a	145	AC_EGREP_HEADER($1, $2,
fc342a63 JB	146	guile_cv_func_$1_declared=yes,
	147	guile_cv_func_$1_declared=no))
	148	if test [x$guile_cv_func_]$1[_declared] = xno; then
777b022a JB	149	AC_DEFINE([MISSING_]translit($1, [a-z], [A-Z])[_DECL])
	150	fi
	151	])
	152
	153	GUILE_FUNC_DECLARED(strptime, time.h)
	154	GUILE_FUNC_DECLARED(bzero, string.h)
c31bfb85	155	GUILE_FUNC_DECLARED(sleep, unistd.h)
777b022a	156	GUILE_FUNC_DECLARED(usleep, unistd.h)
e1a191a8	157
da753252 JB	158	### On some systems usleep has no return value. If it does have one,
da753252 JB	159	### we'd like to return it; otherwise, we'll fake it.
fc342a63	160	AC_CACHE_CHECK([return type of usleep], guile_cv_func_usleep_return_type,
c43f86c1	161	[AC_EGREP_HEADER(changequote(<, >)<void[ ]+usleep>changequote([, ]),
fc342a63 JB	162	/usr/include/unistd.h,
	163	[guile_cv_func_usleep_return_type=void],
	164	[guile_cv_func_usleep_return_type=int])])
	165	case "$guile_cv_func_usleep_return_type" in
	166	"void" )
	167	AC_DEFINE(USLEEP_RETURNS_VOID)
	168	;;
	169	esac
	170
da88f0cb JB	171	dnl <GNU-WIN32 hacks>
	172
	173	AC_CHECK_HEADER(sys/un.h, have_sys_un_h=1)
	174	if test -n "$have_sys_un_h" ; then
	175	AC_DEFINE(HAVE_UNIX_DOMAIN_SOCKETS)
	176	fi
	177
	178	AC_CHECK_FUNCS(socketpair getgroups setpwent pause tzset)
	179
f4e5b810 GH	180	dnl I don't know what this prefixing of cygwin32_ is for.
	181	dnl scmconfig.h wasn't updated with the test results.
	182	dnl so use AC_CHECK_FUNCS for now.
	183
	184	dnl how about:
	185	dnl save confdefs.h
	186	dnl if test $ac_cv_cigwin = yes; then
	187	dnl modify confdefs.h
	188	dnl fi
	189	dnl AC_CHECK_FUNCS...
	190	dnl restore confdefs.h
	191
	192	dnl cp confdefs.h confdefs.h.bak
	193	dnl for func in sethostent endhostent getnetent setnetent endnetent getprotoent endprotoent getservent endservent getnetbyaddr getnetbyname inet_lnaof inet_makeaddr inet_netof ; do
	194	dnl cp confdefs.h.bak confdefs.h
	195	dnl cat >> confdefs.h << EOF
	196	dnl #ifdef __CYGWIN32__
	197	dnl #define $func cygwin32_$func
	198	dnl #endif
	199	dnl EOF
	200	dnl AC_CHECK_FUNC($func)
	201	dnl done
	202	dnl cp confdefs.h.bak confdefs.h
	203
	204	AC_CHECK_FUNCS(sethostent endhostent getnetent setnetent endnetent getprotoent endprotoent getservent endservent getnetbyaddr getnetbyname inet_lnaof inet_makeaddr inet_netof)
da88f0cb JB	205
	206	dnl </GNU-WIN32 hacks>
	207
e1a191a8 GH	208	AC_CACHE_CHECK([for restartable system calls], scm_cv_restarts,
	209	if test $ac_cv_func_sigaction = yes; then
	210	[AC_TRY_COMPILE([#include <signal.h>],
	211	[int a = SA_RESTART],
	212	scm_cv_restarts=yes,
	213	scm_cv_restarts=no)]
	214	else
	215	scm_cv_restarts=no
	216	fi)
	217	if test $scm_cv_restarts = yes; then
	218	AC_DEFINE(HAVE_RESTARTS)
	219	fi
	220
e9cd5d2f MD	221	if test "$ac_cv_header_regex_h" = yes \|\|
	222	test "$ac_cv_header_rxposix_h" = yes \|\|
	223	test "$ac_cv_header_rx_rxposix_h" = yes; then
0b89e78e MD	224	GUILE_NAMED_CHECK_FUNC(regcomp, norx, [LIBOBJS="regex-posix.o $LIBOBJS"],
	225	[AC_CHECK_LIB(rx, main)
	226	GUILE_NAMED_CHECK_FUNC(regcomp, rx, [LIBOBJS="regex-posix.o $LIBOBJS"])]
	227	)
e9cd5d2f MD	228	dnl The following should not be necessary, but for some reason
e9cd5d2f MD	229	dnl autoheader misses it if we don't include it!
0b89e78e MD	230	if test "$ac_cv_func_regcomp_norx" = yes \|\|
0b89e78e MD	231	test "$ac_cv_func_regcomp_rx" = yes; then
e9cd5d2f MD	232	AC_DEFINE(HAVE_REGCOMP)
e9cd5d2f MD	233	fi
da88f0cb	234	fi
8e1bfcd0	235
3a629497 JB	236	AC_REPLACE_FUNCS(inet_aton putenv strerror)
3a629497 JB	237
4a5fa91c TP	238	# When testing for the presence of alloca, we need to add alloca.o
	239	# explicitly to LIBOBJS to make sure that it is translated to
	240	# `alloca.lo' for libtool later on. This can and should be done more cleanly.
3a629497	241	AC_FUNC_ALLOCA
4a5fa91c	242	if test "$ALLOCA" = "alloca.o"; then LIBOBJS="alloca.o $LIBOBJS"; fi
3a629497 JB	243
	244	AC_STRUCT_ST_RDEV
	245	AC_STRUCT_ST_BLKSIZE
075edbde JB	246
	247	# We could use AC_STRUCT_ST_BLOCKS here, but that adds fileblocks.o to
	248	# LIBOBJS, which we don't need. This seems more direct.
	249	AC_CACHE_CHECK([for st_blocks in struct stat], ac_cv_struct_st_blocks,
	250	[AC_TRY_COMPILE([#include <sys/types.h>
	251	#include <sys/stat.h>], [struct stat s; s.st_blocks;],
	252	ac_cv_struct_st_blocks=yes, ac_cv_struct_st_blocks=no)])
	253	if test $ac_cv_struct_st_blocks = yes; then
	254	AC_DEFINE(HAVE_ST_BLOCKS)
	255	fi
	256
3a629497 JB	257	AC_STRUCT_TIMEZONE
	258	GUILE_STRUCT_UTIMBUF
	259
3a629497 JB	260	#--------------------------------------------------------------------
	261	#
	262	# Which way does the stack grow?
	263	#
	264	#--------------------------------------------------------------------
	265
	266	AC_TRY_RUN(aux (l) unsigned long l;
	267	{ int x; exit (l >= ((unsigned long)&x)); }
	268	main () { int q; aux((unsigned long)&q); },
	269	AC_DEFINE(SCM_STACK_GROWS_UP),,AC_MSG_WARN(Guessing that stack grows down -- see scmconfig.h.in))
	270
3a171311 JB	271	AC_CACHE_CHECK([whether floats fit in longs], guile_cv_type_float_fits_long,
	272	[AC_TRY_RUN([main () { exit (sizeof(float) > sizeof(long)); }],
	273	[guile_cv_type_float_fits_long=yes],
	274	[guile_cv_type_float_fits_long=no],
	275	[guile_cv_type_float_fits_long=guess-yes])])
	276	case $guile_cv_type_float_fits_long in
	277	"yes" )
	278	AC_DEFINE(SCM_SINGLES)
	279	;;
	280	"guess-yes" )
	281	AC_DEFINE(SCM_SINGLES)
	282	AC_MSG_WARN([guessing that sizeof(long) == sizeof(float)])
	283	AC_MSG_WARN([see SCM_SINGLES in scmconfig.h.in])
	284	;;
	285	esac
3a629497	286
3a629497 JB	287
	288	AC_MSG_CHECKING(for struct linger)
	289	AC_CACHE_VAL(scm_cv_struct_linger,
	290	AC_TRY_COMPILE([
	291	#include <sys/types.h>
	292	#include <sys/socket.h>],
	293	[struct linger lgr; lgr.l_linger = 100],
	294	scm_cv_struct_linger="yes",
	295	scm_cv_struct_linger="no"))
	296	AC_MSG_RESULT($scm_cv_struct_linger)
	297	if test $scm_cv_struct_linger = yes; then
	298	AC_DEFINE(HAVE_STRUCT_LINGER)
	299	fi
	300
	301	#--------------------------------------------------------------------
	302	#
	303	# How can you violate a stdio abstraction by setting a stream's fd?
	304	#
	305	#--------------------------------------------------------------------
	306
	307	AC_MSG_CHECKING(how to set a stream file descriptor)
	308	AC_CACHE_VAL(scm_cv_fd_setter,
	309	AC_TRY_COMPILE([#include <stdio.h>],
	310	[stdout->_file = 1],
	311	scm_cv_fd_setter="_file",
fe75dfc5 JB	312	AC_TRY_COMPILE([#include <stdio.h>],
	313	[stdout->__file = 1],
	314	scm_cv_fd_setter="__file",
3a629497 JB	315	AC_TRY_COMPILE([#include <stdio.h>],
	316	[stdout->_fileno = 1],
	317	scm_cv_fd_setter="_fileno",
fe75dfc5	318	scm_cv_fd_setter=""))))
3a629497 JB	319
	320	if test "$scm_cv_fd_setter"; then
	321	AC_MSG_RESULT($scm_cv_fd_setter)
	322	AC_DEFINE_UNQUOTED(FD_SETTER, $scm_cv_fd_setter)
	323	else
	324	AC_MSG_RESULT(we couldn't do it!)
	325	fi
	326
	327	#--------------------------------------------------------------------
	328	# How to find out whether a FILE structure contains buffered data.
	329	# From Tk we have the following list:
	330	# _cnt: Most UNIX systems
fe75dfc5	331	# __cnt: HPUX and SCO
3a629497 JB	332	# _r: BSD
	333	# readCount: Sprite
	334	# Or, in GNU libc there are two fields, _gptr and _egptr, which
	335	# have to be compared.
	336	# These can also be known as _IO_read_ptr and _IO_read_end.
	337	#--------------------------------------------------------------------
	338
	339	AC_MSG_CHECKING(how to get buffer char count from FILE structure)
	340	AC_CACHE_VAL(scm_cv_struct_file_count,
	341	AC_TRY_COMPILE([#include <stdio.h>],
	342	[FILE *f = stdin; f->_cnt = 0],
	343	scm_cv_struct_file_count="_cnt",
fe75dfc5 JB	344	AC_TRY_COMPILE([#include <stdio.h>],
	345	[FILE *f = stdin; f->__cnt = 0],
	346	scm_cv_struct_file_count="__cnt",
3a629497 JB	347	AC_TRY_COMPILE([#include <stdio.h>],
	348	[FILE *f = stdin; f->_r = 0],
	349	scm_cv_struct_file_count="_r",
	350	AC_TRY_COMPILE([#include <stdio.h>],
	351	[FILE *f = stdin; f->readCount = 0],
	352	scm_cv_struct_file_count="readCount",
fe75dfc5	353	scm_cv_struct_file_count="")))))
3a629497 JB	354	if test "$scm_cv_struct_file_count"; then
	355	AC_MSG_RESULT($scm_cv_struct_file_count)
	356	AC_DEFINE_UNQUOTED(FILE_CNT_FIELD, $scm_cv_struct_file_count)
	357	else
	358	AC_CACHE_VAL(scm_cv_struct_file_gptr,
	359	AC_TRY_COMPILE([#include <stdio.h>],
	360	[FILE *f = stdin; f->_gptr = f->egptr;],
	361	scm_cv_struct_file_gptr=1,
	362	scm_cv_struct_file_gptr=""))
	363	if test "$scm_cv_struct_gptr"; then
	364	AC_MSG_RESULT(gptr)
	365	AC_DEFINE_UNQUOTED(FILE_CNT_GPTR, $scm_cv_struct_file_gptr)
	366	else
	367	AC_CACHE_VAL(scm_cv_struct_file_readptr,
	368	AC_TRY_COMPILE([#include <stdio.h>],
	369	[FILE *f = stdin; f->_IO_read_ptr = f->_IO_read_end;],
	370	scm_cv_struct_file_readptr=1))
	371	if test "$scm_cv_struct_file_readptr"; then
	372	AC_MSG_RESULT(read_ptr)
	373	AC_DEFINE_UNQUOTED(FILE_CNT_READPTR, $scm_cv_struct_file_readptr)
	374	else
	375	AC_MSG_RESULT(we couldn't do it!)
	376	fi
	377	fi
	378	fi
	379
	380	#--------------------------------------------------------------------
	381	#
	382	# Flags for thread support
	383	#
	384	#--------------------------------------------------------------------
	385
539c89a1 JB	386	### What thread package has the user asked for?
	387	AC_ARG_WITH(threads, [ --with-threads thread interface],
	388	, with_threads=no)
	389
	390	### Turn $with_threads into either the name of a threads package, like
	391	### `qt', or `no', meaning that threads should not be supported.
e0f54bcc	392	AC_MSG_CHECKING(whether to support threads)
539c89a1 JB	393	case "$with_threads" in
	394	"yes" \| "qt" \| "coop" \| "")
	395	with_threads=qt
	396	;;
	397	"no" )
	398	;;
	399	* )
	400	AC_MSG_ERROR(invalid value for --with-threads: $with_threads)
	401	;;
	402	esac
e0f54bcc	403	AC_MSG_RESULT($with_threads)
3a629497	404
539c89a1 JB	405	## Make sure the threads package we've chosen is actually supported on
	406	## the present platform.
	407	case "${with_threads}" in
	408	"qt" )
	409	## This configures the QuickThreads package, and sets or clears
	410	## the THREAD_PACKAGE variable if qthreads don't configure
	411	## correctly.
	412	QTHREADS_CONFIGURE
	413	;;
	414	esac
3a629497	415
539c89a1 JB	416	## If we're using threads, bring in some other parts of Guile which
	417	## work with them.
	418	if test "${THREAD_PACKAGE}" != "" ; then
	419	AC_DEFINE(USE_THREADS, 1)
3a629497	420
539c89a1 JB	421	## Include the Guile thread interface in the library...
539c89a1 JB	422	LIBOBJS="$LIBOBJS threads.o"
933a7411	423
539c89a1 JB	424	## ... and tell it which package to talk to.
	425	case "${THREAD_PACKAGE}" in
	426	"QT" )
	427	AC_DEFINE(USE_COOP_THREADS, 1)
	428	;;
	429	* )
	430	AC_MSG_ERROR(invalid value for THREAD_PACKAGE: ${THREAD_PACKAGE})
	431	;;
	432	esac
	433
	434	## Bring in scm_internal_select, if appropriate.
	435	if test $ac_cv_func_gettimeofday = yes &&
	436	test $ac_cv_func_select = yes; then
	437	LIBOBJS="$LIBOBJS iselect.o"
	438	AC_DEFINE(GUILE_ISELECT, 1)
	439	fi
933a7411 MD	440	fi
933a7411 MD	441
3a629497 JB	442	## If we're using GCC, ask for aggressive warnings.
3a629497 JB	443	case "$GCC" in
99be3450	444	yes )
0a1b8b15 JB	445	## We had -Wstrict-prototypes in here for a bit, but Guile does too
	446	## much stuff with generic function pointers for that to really be
	447	## less than exasperating.
	448	CFLAGS="$CFLAGS -Wall -Wpointer-arith -Wmissing-prototypes" ;;
3a629497 JB	449	esac
	450
	451	AC_PROG_AWK
	452
	453	## If we're creating a shared library (using libtool!), then we'll
	454	## need to generate a list of .lo files corresponding to the .o files
	455	## given in LIBOBJS. We'll call it LIBLOBJS.
	456	LIBLOBJS="`echo ${LIBOBJS} \| sed 's/\.o/.lo/g'`"
	457
7c86ae05 JB	458	AC_SUBST(GUILE_MAJOR_VERSION)
	459	AC_SUBST(GUILE_MINOR_VERSION)
	460	AC_SUBST(GUILE_VERSION)
539c89a1	461
bcc695e3	462	dnl Tell guile-config what flags guile users should link against.
539c89a1	463	GUILE_LIBS="$LDFLAGS $THREAD_LIBS_INSTALLED $LIBS"
daa4f38c	464	AC_SUBST(GUILE_LIBS)
7c86ae05 JB	465
	466	dnl timestamping the interpreter and scheme libraries:
	467	dnl
	468	dnl Help us notice when we're running one version of the Guile
	469	dnl interpreter against a different version of the ice-9 Scheme code.
	470	dnl This will definitely detect version skew due to differing
	471	dnl snapshots and releases, but may not catch skew for the developers.
	472	dnl Hopefully it will not detect skew when there is none; if that
	473	dnl happens, the warnings will be useless, and we should remove this.
	474	GUILE_STAMP="`date`"
	475	AC_SUBST(GUILE_STAMP)
3a629497 JB	476
	477	AC_SUBST(AWK)
	478	AC_SUBST(LIBLOBJS)
	479
0e6d926d	480	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	481
3a629497 JB	482	dnl Local Variables:
	483	dnl comment-start: "dnl "
	484	dnl comment-end: ""
	485	dnl comment-start-skip: "\\bdnl\\b\\s *"
	486	dnl End: