[bpt/guile.git] / configure.in

dnl   configuration script for Guile
dnl   Process this file with autoconf to produce configure.
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

AC_C_CONST

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_getc_function rl_clear_signals rl_cleanup_after_signal)
if test $ac_cv_lib_readline_readline = yes -a $ac_cv_func_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, ac_cv_func_$1_declared,
    AC_EGREP_HEADER($1, $2,
		    ac_cv_func_$1_declared=yes, 
		    ac_cv_func_$1_declared=no))
  if test [x$ac_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(usleep, unistd.h)

# On some systems usleep has no return value
AC_EGREP_HEADER(changequote(<, >)<void[ 	][ 	]*usleep>changequote([, ]),
  /usr/include/unistd.h,
  AC_DEFINE(USLEEP_RETURNS_VOID)
)


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_TRY_RUN(main () { exit (sizeof(float) != sizeof(long)); },
	   AC_DEFINE(SCM_SINGLES),,AC_DEFINE(SCM_SINGLES)
	   AC_MSG_WARN(Guessing that sizeof(long) == sizeof(float) -- see scmconfig.h.in))

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->_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
#		_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->_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 build-guile 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 ice-9/Makefile ice-9/version.scm qt/Makefile qt/qt.h qt/md/Makefile qt/time/Makefile build/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.
0f2d19dd	3	AC_INIT(Makefile.in)
2d26def0	4	. $srcdir/GUILE-VERSION
3a629497	5	AM_INIT_AUTOMAKE($PACKAGE, $VERSION, no-define)
15ae1bee	6	AM_MAINTAINER_MODE
3a629497	7	AM_CONFIG_HEADER(libguile/scmconfig.h)
2d26def0	8
3a629497 JB	9	#--------------------------------------------------------------------
	10	#
	11	# User options
	12	#
	13	#--------------------------------------------------------------------
86789f9b	14
3a629497	15	AC_ARG_ENABLE(dynamic-linking,
af8865f7 JB	16	[ --enable-dynamic-linking Include support for dynamic linking],,
af8865f7 JB	17	enable_dynamic_linking=yes)
3a629497 JB	18
	19	AC_ARG_ENABLE(guile-debug,
	20	[ --enable-guile-debug Include internal debugging functions])
	21	if test "$enableval" = y \|\| test "$enableval" = yes; then
	22	AC_DEFINE(GUILE_DEBUG)
	23	fi
	24
c176b92b JB	25	dnl The --disable-debug used to control these two. But now they are
	26	dnl a required part of the distribution.
	27	AC_DEFINE(DEBUG_EXTENSIONS)
	28	AC_DEFINE(READER_EXTENSIONS)
	29
3a629497 JB	30	#--------------------------------------------------------------------
	31
	32	AC_PROG_CC
	33	AC_PROG_CPP
	34	AM_PROG_LIBTOOL
	35
	36	AC_AIX
	37	AC_ISC_POSIX
	38	AC_MINIX
	39
	40	AC_C_CONST
	41
	42	AC_HEADER_STDC
	43	AC_HEADER_DIRENT
	44	AC_HEADER_TIME
	45	AC_HEADER_SYS_WAIT
e9cd5d2f	46	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	47	GUILE_HEADER_LIBC_WITH_UNISTD
	48
	49	AC_TYPE_GETGROUPS
	50	AC_TYPE_SIGNAL
	51	AC_TYPE_MODE_T
	52
5852c051	53	AC_CHECK_LIB(m, main)
4c787b52	54	AC_CHECK_FUNCS(gethostbyname)
5852c051 JB	55	if test $ac_cv_func_gethostbyname = no; then
	56	AC_CHECK_LIB(nsl, gethostbyname)
	57	fi
4c787b52	58	AC_CHECK_FUNCS(connect)
5852c051 JB	59	if test $ac_cv_func_connect = no; then
	60	AC_CHECK_LIB(socket, connect)
	61	fi
81e9e32f JB	62	AC_CHECK_LIB(termcap, tgoto)
81e9e32f JB	63	AC_CHECK_LIB(readline, readline)
7e0fee6e	64	AC_CHECK_FUNCS(rl_getc_function rl_clear_signals rl_cleanup_after_signal)
c700db4f MD	65	if test $ac_cv_lib_readline_readline = yes -a $ac_cv_func_rl_getc_function = no; then
	66	echo 'Warning: libreadline is too old on your system. Need >= 2.1.'
	67	fi
5852c051	68
90fcac06 JB	69	# Checks for dynamic linking
90fcac06 JB	70
5852c051 JB	71	if test "$enable_dynamic_linking" = "yes"; then
	72
	73	AC_CHECK_LIB(dl,dlopen)
	74	if test "$ac_cv_lib_dl_dlopen" = "yes"; then
4c787b52	75	AC_CHECK_FUNCS(dlopen)
5852c051 JB	76	AC_DEFINE(DYNAMIC_LINKING)
	77	else
	78	AC_CHECK_LIB(dld,dld_link)
	79	if test "$ac_cv_lib_dld_dld_link" = "yes"; then
5852c051 JB	80	AC_DEFINE(DYNAMIC_LINKING)
5852c051 JB	81	else
4c787b52	82	AC_CHECK_FUNCS(shl_load)
5852c051 JB	83	if test "$ac_cv_func_shl_load" = "yes"; then
5852c051 JB	84	AC_DEFINE(DYNAMIC_LINKING)
a4995389	85	else
4c787b52	86	AC_CHECK_FUNCS(dlopen)
a4995389 MV	87	if test "$ac_cv_func_dlopen" = "yes"; then
	88	AC_DEFINE(DYNAMIC_LINKING)
	89	fi
5852c051 JB	90	fi
	91	fi
	92	fi
	93
	94	fi
	95
2a0d7176	96	GUILE_DLSYM_USCORE
5852c051	97
95fc06d5	98	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	99
777b022a JB	100	### Some systems don't declare some functions. On such systems, we
	101	### need to at least provide our own K&R-style declarations.
	102
	103	### GUILE_FUNC_DECLARED(function, headerfile)
	104
	105	### Check for a declaration of FUNCTION in HEADERFILE; if it is
	106	### not there, #define MISSING_FUNCTION_DECL.
	107	AC_DEFUN(GUILE_FUNC_DECLARED, [
	108	AC_CACHE_CHECK(for $1 declaration, ac_cv_func_$1_declared,
	109	AC_EGREP_HEADER($1, $2,
	110	ac_cv_func_$1_declared=yes,
	111	ac_cv_func_$1_declared=no))
	112	if test [x$ac_cv_func_]$1[_declared] = xno; then
	113	AC_DEFINE([MISSING_]translit($1, [a-z], [A-Z])[_DECL])
	114	fi
	115	])
	116
	117	GUILE_FUNC_DECLARED(strptime, time.h)
	118	GUILE_FUNC_DECLARED(bzero, string.h)
	119	GUILE_FUNC_DECLARED(usleep, unistd.h)
e1a191a8	120
d9eb6fb7	121	# On some systems usleep has no return value
0935d604 MD	122	AC_EGREP_HEADER(changequote(<, >)<void[ ][ ]*usleep>changequote([, ]),
	123	/usr/include/unistd.h,
	124	AC_DEFINE(USLEEP_RETURNS_VOID)
	125	)
	126
	127
da88f0cb JB	128	dnl <GNU-WIN32 hacks>
	129
	130	AC_CHECK_HEADER(sys/un.h, have_sys_un_h=1)
	131	if test -n "$have_sys_un_h" ; then
	132	AC_DEFINE(HAVE_UNIX_DOMAIN_SOCKETS)
	133	fi
	134
	135	AC_CHECK_FUNCS(socketpair getgroups setpwent pause tzset)
	136
f4e5b810 GH	137	dnl I don't know what this prefixing of cygwin32_ is for.
	138	dnl scmconfig.h wasn't updated with the test results.
	139	dnl so use AC_CHECK_FUNCS for now.
	140
	141	dnl how about:
	142	dnl save confdefs.h
	143	dnl if test $ac_cv_cigwin = yes; then
	144	dnl modify confdefs.h
	145	dnl fi
	146	dnl AC_CHECK_FUNCS...
	147	dnl restore confdefs.h
	148
	149	dnl cp confdefs.h confdefs.h.bak
	150	dnl for func in sethostent endhostent getnetent setnetent endnetent getprotoent endprotoent getservent endservent getnetbyaddr getnetbyname inet_lnaof inet_makeaddr inet_netof ; do
	151	dnl cp confdefs.h.bak confdefs.h
	152	dnl cat >> confdefs.h << EOF
	153	dnl #ifdef __CYGWIN32__
	154	dnl #define $func cygwin32_$func
	155	dnl #endif
	156	dnl EOF
	157	dnl AC_CHECK_FUNC($func)
	158	dnl done
	159	dnl cp confdefs.h.bak confdefs.h
	160
	161	AC_CHECK_FUNCS(sethostent endhostent getnetent setnetent endnetent getprotoent endprotoent getservent endservent getnetbyaddr getnetbyname inet_lnaof inet_makeaddr inet_netof)
da88f0cb JB	162
	163	dnl </GNU-WIN32 hacks>
	164
e1a191a8 GH	165	AC_CACHE_CHECK([for restartable system calls], scm_cv_restarts,
	166	if test $ac_cv_func_sigaction = yes; then
	167	[AC_TRY_COMPILE([#include <signal.h>],
	168	[int a = SA_RESTART],
	169	scm_cv_restarts=yes,
	170	scm_cv_restarts=no)]
	171	else
	172	scm_cv_restarts=no
	173	fi)
	174	if test $scm_cv_restarts = yes; then
	175	AC_DEFINE(HAVE_RESTARTS)
	176	fi
	177
e9cd5d2f MD	178	if test "$ac_cv_header_regex_h" = yes \|\|
	179	test "$ac_cv_header_rxposix_h" = yes \|\|
	180	test "$ac_cv_header_rx_rxposix_h" = yes; then
0b89e78e MD	181	GUILE_NAMED_CHECK_FUNC(regcomp, norx, [LIBOBJS="regex-posix.o $LIBOBJS"],
	182	[AC_CHECK_LIB(rx, main)
	183	GUILE_NAMED_CHECK_FUNC(regcomp, rx, [LIBOBJS="regex-posix.o $LIBOBJS"])]
	184	)
e9cd5d2f MD	185	dnl The following should not be necessary, but for some reason
e9cd5d2f MD	186	dnl autoheader misses it if we don't include it!
0b89e78e MD	187	if test "$ac_cv_func_regcomp_norx" = yes \|\|
0b89e78e MD	188	test "$ac_cv_func_regcomp_rx" = yes; then
e9cd5d2f MD	189	AC_DEFINE(HAVE_REGCOMP)
e9cd5d2f MD	190	fi
da88f0cb	191	fi
8e1bfcd0	192
3a629497 JB	193	AC_REPLACE_FUNCS(inet_aton putenv strerror)
3a629497 JB	194
4a5fa91c TP	195	# When testing for the presence of alloca, we need to add alloca.o
	196	# explicitly to LIBOBJS to make sure that it is translated to
	197	# `alloca.lo' for libtool later on. This can and should be done more cleanly.
3a629497	198	AC_FUNC_ALLOCA
4a5fa91c	199	if test "$ALLOCA" = "alloca.o"; then LIBOBJS="alloca.o $LIBOBJS"; fi
3a629497 JB	200
	201	AC_STRUCT_ST_RDEV
	202	AC_STRUCT_ST_BLKSIZE
075edbde JB	203
	204	# We could use AC_STRUCT_ST_BLOCKS here, but that adds fileblocks.o to
	205	# LIBOBJS, which we don't need. This seems more direct.
	206	AC_CACHE_CHECK([for st_blocks in struct stat], ac_cv_struct_st_blocks,
	207	[AC_TRY_COMPILE([#include <sys/types.h>
	208	#include <sys/stat.h>], [struct stat s; s.st_blocks;],
	209	ac_cv_struct_st_blocks=yes, ac_cv_struct_st_blocks=no)])
	210	if test $ac_cv_struct_st_blocks = yes; then
	211	AC_DEFINE(HAVE_ST_BLOCKS)
	212	fi
	213
3a629497 JB	214	AC_STRUCT_TIMEZONE
	215	GUILE_STRUCT_UTIMBUF
	216
3a629497 JB	217	#--------------------------------------------------------------------
	218	#
	219	# Which way does the stack grow?
	220	#
	221	#--------------------------------------------------------------------
	222
	223	AC_TRY_RUN(aux (l) unsigned long l;
	224	{ int x; exit (l >= ((unsigned long)&x)); }
	225	main () { int q; aux((unsigned long)&q); },
	226	AC_DEFINE(SCM_STACK_GROWS_UP),,AC_MSG_WARN(Guessing that stack grows down -- see scmconfig.h.in))
	227
	228
	229	AC_TRY_RUN(main () { exit (sizeof(float) != sizeof(long)); },
	230	AC_DEFINE(SCM_SINGLES),,AC_DEFINE(SCM_SINGLES)
	231	AC_MSG_WARN(Guessing that sizeof(long) == sizeof(float) -- see scmconfig.h.in))
	232
	233	AC_MSG_CHECKING(for struct linger)
	234	AC_CACHE_VAL(scm_cv_struct_linger,
	235	AC_TRY_COMPILE([
	236	#include <sys/types.h>
	237	#include <sys/socket.h>],
	238	[struct linger lgr; lgr.l_linger = 100],
	239	scm_cv_struct_linger="yes",
	240	scm_cv_struct_linger="no"))
	241	AC_MSG_RESULT($scm_cv_struct_linger)
	242	if test $scm_cv_struct_linger = yes; then
	243	AC_DEFINE(HAVE_STRUCT_LINGER)
	244	fi
	245
	246	#--------------------------------------------------------------------
	247	#
	248	# How can you violate a stdio abstraction by setting a stream's fd?
	249	#
	250	#--------------------------------------------------------------------
	251
	252	AC_MSG_CHECKING(how to set a stream file descriptor)
	253	AC_CACHE_VAL(scm_cv_fd_setter,
	254	AC_TRY_COMPILE([#include <stdio.h>],
	255	[stdout->_file = 1],
	256	scm_cv_fd_setter="_file",
	257	AC_TRY_COMPILE([#include <stdio.h>],
	258	[stdout->_fileno = 1],
	259	scm_cv_fd_setter="_fileno",
	260	scm_cv_fd_setter="")))
	261
	262	if test "$scm_cv_fd_setter"; then
	263	AC_MSG_RESULT($scm_cv_fd_setter)
	264	AC_DEFINE_UNQUOTED(FD_SETTER, $scm_cv_fd_setter)
	265	else
	266	AC_MSG_RESULT(we couldn't do it!)
	267	fi
	268
	269	#--------------------------------------------------------------------
	270	# How to find out whether a FILE structure contains buffered data.
	271	# From Tk we have the following list:
	272	# _cnt: Most UNIX systems
	273	# __cnt: HPUX
	274	# _r: BSD
	275	# readCount: Sprite
	276	# Or, in GNU libc there are two fields, _gptr and _egptr, which
	277	# have to be compared.
	278	# These can also be known as _IO_read_ptr and _IO_read_end.
	279	#--------------------------------------------------------------------
	280
281	AC_MSG_CHECKING(how to get buffer char count from FILE structure)
282	AC_CACHE_VAL(scm_cv_struct_file_count,
283	AC_TRY_COMPILE([#include <stdio.h>],
284	[FILE *f = stdin; f->_cnt = 0],
285	scm_cv_struct_file_count="_cnt",
286	AC_TRY_COMPILE([#include <stdio.h>],
287	[FILE *f = stdin; f->_r = 0],
288	scm_cv_struct_file_count="_r",
289	AC_TRY_COMPILE([#include <stdio.h>],
290	[FILE *f = stdin; f->readCount = 0],
291	scm_cv_struct_file_count="readCount",
292	scm_cv_struct_file_count=""))))
293	if test "$scm_cv_struct_file_count"; then
294	AC_MSG_RESULT($scm_cv_struct_file_count)
295	AC_DEFINE_UNQUOTED(FILE_CNT_FIELD, $scm_cv_struct_file_count)
296	else
297	AC_CACHE_VAL(scm_cv_struct_file_gptr,
298	AC_TRY_COMPILE([#include <stdio.h>],
299	[FILE *f = stdin; f->_gptr = f->egptr;],
300	scm_cv_struct_file_gptr=1,
301	scm_cv_struct_file_gptr=""))
302	if test "$scm_cv_struct_gptr"; then
303	AC_MSG_RESULT(gptr)
304	AC_DEFINE_UNQUOTED(FILE_CNT_GPTR, $scm_cv_struct_file_gptr)
305	else
306	AC_CACHE_VAL(scm_cv_struct_file_readptr,
307	AC_TRY_COMPILE([#include <stdio.h>],
308	[FILE *f = stdin; f->_IO_read_ptr = f->_IO_read_end;],
309	scm_cv_struct_file_readptr=1))
310	if test "$scm_cv_struct_file_readptr"; then
311	AC_MSG_RESULT(read_ptr)
312	AC_DEFINE_UNQUOTED(FILE_CNT_READPTR, $scm_cv_struct_file_readptr)
313	else
314	AC_MSG_RESULT(we couldn't do it!)
315	fi
316	fi
317	fi
318
319	#--------------------------------------------------------------------
320	#
321	# Flags for thread support
322	#
323	#--------------------------------------------------------------------
324
539c89a1 JB	325	### What thread package has the user asked for?
	326	AC_ARG_WITH(threads, [ --with-threads thread interface],
	327	, with_threads=no)
	328
	329	### Turn $with_threads into either the name of a threads package, like
	330	### `qt', or `no', meaning that threads should not be supported.
e0f54bcc	331	AC_MSG_CHECKING(whether to support threads)
539c89a1 JB	332	case "$with_threads" in
	333	"yes" \| "qt" \| "coop" \| "")
	334	with_threads=qt
	335	;;
	336	"no" )
	337	;;
	338	* )
	339	AC_MSG_ERROR(invalid value for --with-threads: $with_threads)
	340	;;
	341	esac
e0f54bcc	342	AC_MSG_RESULT($with_threads)
3a629497	343
539c89a1 JB	344	## Make sure the threads package we've chosen is actually supported on
	345	## the present platform.
	346	case "${with_threads}" in
	347	"qt" )
	348	## This configures the QuickThreads package, and sets or clears
	349	## the THREAD_PACKAGE variable if qthreads don't configure
	350	## correctly.
	351	QTHREADS_CONFIGURE
	352	;;
	353	esac
3a629497	354
539c89a1 JB	355	## If we're using threads, bring in some other parts of Guile which
	356	## work with them.
	357	if test "${THREAD_PACKAGE}" != "" ; then
	358	AC_DEFINE(USE_THREADS, 1)
3a629497	359
539c89a1 JB	360	## Include the Guile thread interface in the library...
539c89a1 JB	361	LIBOBJS="$LIBOBJS threads.o"
933a7411	362
539c89a1 JB	363	## ... and tell it which package to talk to.
	364	case "${THREAD_PACKAGE}" in
	365	"QT" )
	366	AC_DEFINE(USE_COOP_THREADS, 1)
	367	;;
	368	* )
	369	AC_MSG_ERROR(invalid value for THREAD_PACKAGE: ${THREAD_PACKAGE})
	370	;;
	371	esac
	372
	373	## Bring in scm_internal_select, if appropriate.
	374	if test $ac_cv_func_gettimeofday = yes &&
	375	test $ac_cv_func_select = yes; then
	376	LIBOBJS="$LIBOBJS iselect.o"
	377	AC_DEFINE(GUILE_ISELECT, 1)
	378	fi
933a7411 MD	379	fi
933a7411 MD	380
3a629497 JB	381	## If we're using GCC, ask for aggressive warnings.
3a629497 JB	382	case "$GCC" in
99be3450	383	yes )
0a1b8b15 JB	384	## We had -Wstrict-prototypes in here for a bit, but Guile does too
	385	## much stuff with generic function pointers for that to really be
	386	## less than exasperating.
	387	CFLAGS="$CFLAGS -Wall -Wpointer-arith -Wmissing-prototypes" ;;
3a629497 JB	388	esac
	389
	390	AC_PROG_AWK
	391
	392	## If we're creating a shared library (using libtool!), then we'll
	393	## need to generate a list of .lo files corresponding to the .o files
	394	## given in LIBOBJS. We'll call it LIBLOBJS.
	395	LIBLOBJS="`echo ${LIBOBJS} \| sed 's/\.o/.lo/g'`"
	396
7c86ae05 JB	397	AC_SUBST(GUILE_MAJOR_VERSION)
	398	AC_SUBST(GUILE_MINOR_VERSION)
	399	AC_SUBST(GUILE_VERSION)
539c89a1 JB	400
	401	dnl Tell build-guile what flags guile users should link against.
	402	GUILE_LIBS="$LDFLAGS $THREAD_LIBS_INSTALLED $LIBS"
daa4f38c	403	AC_SUBST(GUILE_LIBS)
7c86ae05 JB	404
	405	dnl timestamping the interpreter and scheme libraries:
	406	dnl
	407	dnl Help us notice when we're running one version of the Guile
	408	dnl interpreter against a different version of the ice-9 Scheme code.
	409	dnl This will definitely detect version skew due to differing
	410	dnl snapshots and releases, but may not catch skew for the developers.
	411	dnl Hopefully it will not detect skew when there is none; if that
	412	dnl happens, the warnings will be useless, and we should remove this.
	413	GUILE_STAMP="`date`"
	414	AC_SUBST(GUILE_STAMP)
3a629497 JB	415
	416	AC_SUBST(AWK)
	417	AC_SUBST(LIBLOBJS)
	418
9ba3d403	419	AC_OUTPUT([Makefile libguile/Makefile libguile/guile-snarf ice-9/Makefile ice-9/version.scm qt/Makefile qt/qt.h qt/md/Makefile qt/time/Makefile build/Makefile], [chmod +x libguile/guile-snarf])
0f2d19dd	420
3a629497 JB	421	dnl Local Variables:
	422	dnl comment-start: "dnl "
	423	dnl comment-end: ""
	424	dnl comment-start-skip: "\\bdnl\\b\\s *"
	425	dnl End: