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])

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 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

ACG_CHECK_LIB (rx, main)

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)

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

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

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

# Checks for dynamic linking

xtra_PLUGIN_guile_libs=""
AC_SUBST(xtra_PLUGIN_guile_libs)

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 "$ac_cv_lib_dl_dlopen" = "yes"; then
  xtra_PLUGIN_guile_libs="-lguile -ldl"
  AC_DEFINE(DYNAMIC_LINKING)
else
AC_CHECK_LIB(dld,dld_link)
if test "$ac_cv_lib_dld_dld_link" = "yes"; then
  xtra_PLUGIN_guile_libs="-lguile -ldld"
  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

#--------------------------------------------------------------------
#
# 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_DEFINE_UNQUOTED(GUILE_MAJOR_VERSION, "$GUILE_MAJOR_VERSION")
AC_DEFINE_UNQUOTED(GUILE_MINOR_VERSION, "$GUILE_MINOR_VERSION")
AC_DEFINE_UNQUOTED(GUILE_VERSION, "$GUILE_VERSION")

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 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: