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(debug,
[  --disable-debug         Don't include debugging support])
if test "$enableval" != n && test "$enableval" != no; then
  AC_DEFINE(DEBUG_EXTENSIONS)
  AC_DEFINE(READER_EXTENSIONS)
  LIBOBJS="backtrace.o stacks.o debug.o srcprop.o $LIBOBJS"
fi

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

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

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 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(rx, main)

# Checks for dynamic linking

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

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

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

fi


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)

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)

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

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; then
  AC_CHECK_FUNCS(regcomp, [LIBOBJS="regex-posix.o $LIBOBJS"])
fi

AC_REPLACE_FUNCS(inet_aton putenv strerror)

AC_FUNC_ALLOCA

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

CY_AC_WITH_THREADS
CFLAGS="$CFLAGS $cy_cv_threads_cflags"
THREAD_LIBS="$cy_cv_threads_libs"
AC_SUBST(THREAD_LIBS)

dnl
dnl Set the appropriate flags!
dnl  
if test "$cy_cv_threads_package" = FSU; then
  AC_DEFINE(USE_FSU_PTHREADS, 1)
  else if test "$cy_cv_threads_package" = COOP; then
    AC_DEFINE(USE_COOP_THREADS, 1)
    else if test "$cy_cv_threads_package" = MIT; then
      AC_DEFINE(USE_MIT_PTHREADS, 1)
      else if test "$cy_cv_threads_package" = PCthreads; then
        AC_DEFINE(USE_PCTHREADS_PTHREADS, 1)
        else if test "$cy_cv_threads_package" = unknown; then
          AC_MSG_ERROR("cannot find threads installation")
        fi
      fi
    fi
  fi
fi

if test "$cy_cv_threads_package" != ""; then
  AC_DEFINE(USE_THREADS)
  LIBOBJS="$LIBOBJS threads.o"
fi

## If we're using GCC, ask for aggressive warnings.
case "$GCC" in
  yes ) CFLAGS="$CFLAGS -Wall -Wpointer-arith" ;;
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 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)


dnl ======================================================================
dnl configuration for the Qt package
dnl ======================================================================

threads_enabled=false
if test "$cy_cv_threads_package" = COOP; then
	threads_enabled=true
fi

# Determine the host we are working on
AC_CANONICAL_HOST

# How can we refer to the qt source directory from within the qt build
# directory?  For headers, we can rely on the fact that the qt src
# directory appears in the #include path.

qtsrcdir="`(cd $srcdir; pwd)`/qt"

changequote(,)dnl We use [ and ] in a regexp in the case
case "$host" in
i[3456]86-*-*)
	qtmds_s=$qtsrcdir/md/i386.s
	qtmd_h=md/i386.h
	qtmdc_c=$qtsrcdir/md/null.c 
	;;
mips-sgi-irix5*)
	qtmds_s=$qtsrcdir/md/mips-irix5.s
	qtmd_h=md/mips.h
	qtmdc_c=$qtsrcdir/md/null.c
	qtdmdb_s=$qtsrcdir/md/mips_b.s 
	;;
mips-*-*)
	qtmds_s=$qtsrcdir/md/mips.s
	qtmd_h=md/mips.h
	qtmdc_c=$qtsrcdir/md/null.c
	qtdmdb_s=$qtsrcdir/md/mips_b.s 
	;;
sparc-*-sunos*)
	qtmd_h=md/sparc.h
	qtmdc_c=$qtsrcdir/md/null.c
	qtmds_s=$qtsrcdir/md/_sparc.s
	qtdmdb_s=$qtsrcdir/md/_sparc_b.s 
	;;
sparc-*-*)
	qtmd_h=md/sparc.h
	qtmdc_c=$qtsrcdir/md/null.c
	qtmds_s=$qtsrcdir/md/sparc.s
	qtdmdb_s=$qtsrcdir/md/sparc_b.s 
	;;
*)
	echo "Unknown configuration; threads package disabled"
	threads_enabled=false
	;;
esac
changequote([, ])


if $threads_enabled; then
   target_libs=libqt.a
else
   target_libs=
fi

# Give the Makefile the names of the object files that will be
# generated by compiling $qtmdc_c and $qtmds_s.
qtmdc_o="`echo ${qtmdc_c} | sed -e 's:^.*/::' | sed -e 's:\.c$:\.o:'`"
qtmds_o="`echo ${qtmds_s} | sed -e 's:^.*/::' | sed -e 's:\.s$:\.o:'`"

AC_SUBST(target_libs)
AC_SUBST(qtmd_h)
AC_SUBST(qtmdc_c)
AC_SUBST(qtmdc_o)
AC_SUBST(qtmds_s)
AC_SUBST(qtmds_o)
AC_SUBST(qtmdb_s)

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], [chmod +x libguile/guile-snarf])

dnl Local Variables:
dnl comment-start: "dnl "
dnl comment-end: ""
dnl comment-start-skip: "\\bdnl\\b\\s *"
dnl End: