Diff for /gforth/configure.in between versions 1.93 and 1.145

version 1.93, 2002/12/24 23:40:29 version 1.145, 2005/01/21 09:42:12
Line 1 Line 1
 dnl Process this file with autoconf to produce a configure script.  dnl Process this file with autoconf to produce a configure script.
   
 #Copyright (C) 1995,1996,1997,1998,2000 Free Software Foundation, Inc.  #Copyright (C) 1995,1996,1997,1998,2000,2003,2004 Free Software Foundation, Inc.
   
 #This file is part of Gforth.  #This file is part of Gforth.
   
Line 18  dnl Process this file with autoconf to p Line 18  dnl Process this file with autoconf to p
 #along with this program; if not, write to the Free Software  #along with this program; if not, write to the Free Software
 #Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.  #Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
   
 AC_INIT(engine/engine.c)  
   
 dnl We use some automake macros here,  dnl We use some automake macros here,
 dnl but don't use automake for creating Makefile.in  dnl but don't use automake for creating Makefile.in
 AM_INIT_AUTOMAKE(gforth,0.5.9-20020901)  AC_INIT([gforth],[0.6.2-20030910],[https://savannah.gnu.org/bugs/?func=addbug&group=gforth])
   AC_PREREQ(2.54)
 #snapshots have numbers major.minor.release-YYYYMMDD  #snapshots have numbers major.minor.release-YYYYMMDD
 #note that lexicographic ordering must be heeded.  #note that lexicographic ordering must be heeded.
 #I.e., 0.4.1-YYYYMMDD must not exist before 0.4.1!  #I.e., 0.4.1-YYYYMMDD must not exist before 0.4.1!
 UPDATED="1 September 2002"  UPDATED="September 10, 2003"
 AC_SUBST(UPDATED)  AC_SUBST(UPDATED)
 AM_CONFIG_HEADER(engine/config.h)  AC_CONFIG_HEADERS(engine/config.h)
 #AM_CYGWIN32  
   
 #default setting that may be changed later:  #suppress the "-g -O2" default
 no_dynamic_default=0  test "$CFLAGS" || CFLAGS=-O2
   
 AC_ARG_ENABLE(force-reg,  AC_ARG_ENABLE(force-reg,
 [  --enable-force-reg     Use explicit register declarations if they appear in  [  --enable-force-reg     Use explicit register declarations if they appear in
Line 40  AC_ARG_ENABLE(force-reg, Line 39  AC_ARG_ENABLE(force-reg,
                           but also incorrect code with some gcc versions on                            but also incorrect code with some gcc versions on
                           some processors (default disabled).],                            some processors (default disabled).],
 AC_DEFINE(FORCE_REG,,[Define if you want to use explicit register declarations for better performance or for more convenient CODE words (does not work with all GCC versions on all machines)]))  AC_DEFINE(FORCE_REG,,[Define if you want to use explicit register declarations for better performance or for more convenient CODE words (does not work with all GCC versions on all machines)]))
   AC_ARG_ENABLE(force-ll,
   [  --enable-force-ll      Use explicit long long declarations if they appear in
                             the machine.h file. This can cause a good speedup,
                             but also incorrect code with some gcc versions on
                             some processors (default disabled).],
   AC_DEFINE(FORCE_LL,,[Define if you want to use explicit long long declarations for better performance (does not work with all GCC versions on all machines)]))
   AC_SUBST(PROFEXES)
   AC_SUBST(PROFOBJS)
   AC_ARG_ENABLE(prof,
   [  --enable-prof          Build gforth-prof, which outputs frequently occuring
                             sequences of primitives.],
   PROFEXES="gforth-prof\$(EXE)"; PROFOBJS="engine-prof.o main-prof.o profile.o")
   
 AC_ARG_WITH(debug,  AC_ARG_WITH(debug,
 [  --with-debug     specifies option -g to compile with debug info (default)  [  --with-debug           specifies option -g to compile with debug info
   --without-debug  omits the -g switch and creates smaller images on    --without-debug         omits the -g switch and creates smaller images on
                    machines where "strip" has problems with gcc style                            machines where "strip" has problems with gcc style
                    debugging informations.],                            debugging informations.],
 if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)  if test "$withval" = "yes"; then DEBUGFLAG=-g; fi)
   
 PEEPHOLE="yes"  dnl PEEPHOLE="yes"
 AC_ARG_WITH(peephole,  dnl AC_ARG_WITH(peephole,
 [  --with-peephole      Enable peephole optimization (default)  dnl [  --with-peephole  Enable peephole optimization (default)
   --without-peephole    disables peephole optimization. Creates smaller,  dnl   --without-peephole        disables peephole optimization. Creates smaller,
                         but slower images.],  dnl                     but slower images.],
 PEEPHOLE="$withval")  dnl PEEPHOLE="$withval")
   
   #variables mentioned in INSTALL
   AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x); gcc-2.95 recommended.])
   AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
   AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])
   AC_ARG_VAR(ac_cv_sizeof_char, [sizeof(char)])
   AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
   AC_ARG_VAR(ac_cv_sizeof_int, [sizeof(int)])
   AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(long)])
   AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long long)])
   AC_ARG_VAR(ac_cv_sizeof_intptr_t, [sizeof(intptr_t)])
   AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeof(int128_t)])
   AC_ARG_VAR(ac_cv_sizeof_uint128_t, [sizeof(uint128_t)])
   AC_ARG_VAR(ac_cv_c_bigendian, [Is the target big-endian ("yes" or "no")?])
   AC_ARG_VAR(no_dynamic_default, [run gforth with --dynamic (0) or --no-dynamic (1) by default])
   AC_ARG_VAR(skip_code, [assembly code for skipping 16 bytes of code])
   
   #set up feature test macros, so the tests get them right:
   # turn on all POSIX, SUSv3, and GNU features if available
   AC_GNU_SOURCE
   dnl AC_DEFINE_UNQUOTED([_GNU_SOURCE],1,[feature test macro])
   
   dnl Don't define _POSIX_SOURCE etc. because some OSs (in particular
   dnl MacOSX) disable some features then (MacOSX checks for _POSIX_SOURCE,
   dnl but not for _XOPEN_SOURCE)
   dnl AC_DEFINE_UNQUOTED([_POSIX_SOURCE],1,[feature test macro])
   dnl AC_DEFINE_UNQUOTED([_POSIX_C_SOURCE],199506L,[feature test macro])
   dnl AC_DEFINE_UNQUOTED([_XOPEN_SOURCE],600,[feature test macro])
   # turn on large file support with 64-bit off_t where available
   AC_SYS_LARGEFILE
   dnl AC_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro])
   dnl AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro])
   
 #currently we force direct threading this way.  Eventually we should  #currently we force direct threading this way.  Eventually we should
 #setup in the arch and engine files right  #setup in the arch and engine files right
   
 CFLAGS=$CFLAGS  
   
 AC_PROG_CC  AC_PROG_CC
   
 test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)  test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher)
Line 67  test "$GCC" = "yes" || AC_MSG_ERROR(Gfor Line 108  test "$GCC" = "yes" || AC_MSG_ERROR(Gfor
 AC_SUBST(CC)  AC_SUBST(CC)
 AC_SUBST(DEBUGFLAG)  AC_SUBST(DEBUGFLAG)
   
 AC_MSG_CHECKING(gcc version)  AC_MSG_CHECKING(make type)
 gcc_version=`$CC -v 2>&1|grep 'gcc version'|sed 's/.*gcc version //'`  make_type=`make -v 2>&1|grep 'ake version'|sed 's/ version .*//'`
 AC_MSG_RESULT($gcc_version)  
 if expr "$gcc_version" \> 3.0.4 >/dev/null && expr "$gcc_version" \< 3.2.1 >/dev/null  
 then  
     no_dynamic_default=1  
     AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))  
 fi  
   
 dnl the following macro produces a warning with autoconf-2.1  GNUMAKE='#'
 AC_CHECK_SIZEOF(char *)  test "$make_type" = "GNU Make" && GNUMAKE=''
 case "$ac_cv_sizeof_char_p" in  
   2)  
     wordsize=16  
     ;;  
   4)  
     wordsize=32  
     ;;  
   8)  
     wordsize=64  
     ;;  
 esac  
   
 AC_CHECK_SIZEOF(char)  
 AC_CHECK_SIZEOF(short)  
 AC_CHECK_SIZEOF(int)  
 AC_CHECK_SIZEOF(long)  
 AC_CHECK_SIZEOF(long long)  
   
 AC_MSG_CHECKING([for a C type for cells])  AC_MSG_RESULT($make_type)
 ac_cv_int_type_cell=none  
 case "$ac_cv_sizeof_char_p" in  
   $ac_cv_sizeof_int)  
     ac_cv_int_type_cell=int  
     ;;  
   $ac_cv_sizeof_short)  
     ac_cv_int_type_cell=short  
     ;;  
   $ac_cv_sizeof_char)  
     ac_cv_int_type_cell=char  
     ;;  
   $ac_cv_sizeof_long)  
     ac_cv_int_type_cell=long  
     ;;  
   $ac_cv_sizeof_long_long)  
     ac_cv_int_type_cell="long long"  
     ;;  
 esac  
 AC_MSG_RESULT($ac_cv_int_type_cell)  
 AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])  
   
 AC_MSG_CHECKING([for a C type for double-cells])  AC_SUBST(GNUMAKE)
 ac_cv_int_type_double_cell=none  
 case `expr 2 '*' "$ac_cv_sizeof_char_p"` in  
   $ac_cv_sizeof_short)  
     ac_cv_int_type_double_cell=short  
     ;;  
   $ac_cv_sizeof_int)  
     ac_cv_int_type_double_cell=int  
     ;;  
   $ac_cv_sizeof_long)  
     ac_cv_int_type_double_cell=long  
     ;;  
   $ac_cv_sizeof_long_long)  
     ac_cv_int_type_double_cell="long long"  
     ;;  
 esac  
 AC_MSG_RESULT($ac_cv_int_type_double_cell)  
 if test "$ac_cv_int_type_double_cell" = none; then  
         AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])  
         AC_LIBOBJ(dblsub)  
         AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])  
 else  
         AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])  
 fi  
   
 AC_MSG_CHECKING([whether the linker accepts -export-dynamic])  AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
 OLDLDFLAGS=$LDFLAGS  OLDLDFLAGS=$LDFLAGS
Line 156  AC_MSG_RESULT($ac_export_dynamic) Line 131  AC_MSG_RESULT($ac_export_dynamic)
 #gforth will run; the system on which configure will run is the `build'  #gforth will run; the system on which configure will run is the `build'
 AC_CANONICAL_HOST  AC_CANONICAL_HOST
 case "$host_cpu" in  case "$host_cpu" in
           arm*)
                   machine=arm
                   CFLAGS="$CFLAGS -fomit-frame-pointer"
                   if test -z $no_dynamic_default; then
                       no_dynamic_default=1
                       AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
                   fi
                   ;;
         hppa*)          hppa*)
                 machine=hppa                  machine=hppa
                 $srcdir/mkinstalldirs arch/hppa                  $srcdir/mkinstalldirs arch/hppa
                 AC_LIBOBJ(../arch/hppa/cache)                  AC_LIBOBJ(../arch/hppa/cache)
                   #-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
                 LDFLAGS="$LDFLAGS -Xlinker -N"                  LDFLAGS="$LDFLAGS -Xlinker -N"
                 LIBS="$LIBS -L/lib/pa1.1/"                  LIBS="$LIBS -L/lib/pa1.1/"
                 ;;                  ;;
Line 181  case "$host_cpu" in Line 165  case "$host_cpu" in
                 CFLAGS="$CFLAGS -march=pentium"                  CFLAGS="$CFLAGS -march=pentium"
                 AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")                  AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486")
                 ;;                  ;;
           x86_64)
                   machine=amd64
                   ac_includes_default="$ac_includes_default
   #include \"arch/generic/128bit.h\""
                   ;;
         ia64*)          ia64*)
                 machine=ia64                  machine=ia64
                   AC_LIBOBJ(../arch/ia64/flush_icache_block)
                   test "$skipcode" || skipcode="nop.i 0"
                   #".skip 16" passes the test below,
                   # but gives an assembler error in engine
                 ;;                  ;;
         m68k)          m68k)
                 machine=m68k                  machine=m68k
Line 207  case "$host_cpu" in Line 200  case "$host_cpu" in
                 #particular, the delay slots of LW, MFLO, etc.)                  #particular, the delay slots of LW, MFLO, etc.)
                 #                  #
                 #Therefore we disable dynamic native code by default:                  #Therefore we disable dynamic native code by default:
                 no_dynamic_default=1                  if test -z $no_dynamic_default; then
                 AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))                      no_dynamic_default=1
                 #link text and data segment into the same 256M region!                      AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
                 AC_MSG_CHECKING([whether the linker accepts -T])                  fi
                 OLDLDFLAGS=$LDFLAGS  
                 LDFLAGS="$LDFLAGS -Xlinker -T -Xlinker 10000000"  
                 AC_TRY_LINK(,,ac_link_mips_t=yes,ac_link_mips_t=no)  
                 test $ac_link_mips_t = yes||LDFLAGS=$OLDLDFLAGS  
                 AC_MSG_RESULT($ac_link_mips_t)  
                 AC_MSG_CHECKING([whether the linker accepts -D])  
                 OLDLDFLAGS=$LDFLAGS  
                 LDFLAGS="$LDFLAGS -Xlinker -D -Xlinker 10400000"  
                 AC_TRY_LINK(,,ac_link_mips_d=yes,ac_link_mips_d=no)  
                 test $ac_link_mips_d = yes||LDFLAGS=$OLDLDFLAGS  
                 AC_MSG_RESULT($ac_link_mips_d)  
                 ;;                  ;;
         alpha*)          alpha*)
                 machine=alpha                  machine=alpha
Line 231  case "$host_cpu" in Line 213  case "$host_cpu" in
         power*|rs6000)          power*|rs6000)
                 machine=power                  machine=power
                 $srcdir/mkinstalldirs arch/power                  $srcdir/mkinstalldirs arch/power
                 AC_CHECK_FUNC(_sync_cache_range,true,AC_LIBOBJ(../arch/power/_sync_cache_range))                  AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
                   #long long is broken on (at least) gcc-2.95.* for PPC
                   test x$ac_cv_sizeof_long_long = x && ac_cv_sizeof_long_long=0
                 ;;                  ;;
         *)          *)
                 AC_MSG_WARN([Using a generic machine description])                  AC_MSG_WARN([Using a generic machine description])
                 AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])                  AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)])
                 AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])                  AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!])
                 machine=generic                  machine=generic
                   #I-cache flushing would be needed for dynamic code generation
                   if test -z $no_dynamic_default; then
                       no_dynamic_default=1
                       AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
                   fi
 esac  esac
 AC_SUBST(host)  AC_SUBST(host)
   
   dnl the following macro produces a warning with autoconf-2.1
   AC_CHECK_SIZEOF(char *)
   case "$ac_cv_sizeof_char_p" in
     2)
       wordsize=16
       ;;
     4)
       wordsize=32
       ;;
     8)
       wordsize=64
       ;;
   esac
   
   AC_CHECK_SIZEOF(char)
   AC_CHECK_SIZEOF(short)
   AC_CHECK_SIZEOF(int)
   AC_CHECK_SIZEOF(long)
   AC_CHECK_SIZEOF(long long)
   AC_CHECK_SIZEOF(intptr_t)
   AC_CHECK_SIZEOF(int128_t)
   AC_CHECK_SIZEOF(uint128_t)
   
   AC_MSG_CHECKING([for a C type for cells])
   ac_cv_int_type_cell=none
   case "$ac_cv_sizeof_char_p" in
     $ac_cv_sizeof_int)
       ac_cv_int_type_cell=int
       ;;
     $ac_cv_sizeof_short)
       ac_cv_int_type_cell=short
       ;;
     $ac_cv_sizeof_char)
       ac_cv_int_type_cell=char
       ;;
     $ac_cv_sizeof_long)
       ac_cv_int_type_cell=long
       ;;
     $ac_cv_sizeof_long_long)
       ac_cv_int_type_cell="long long"
       ;;
     $ac_cv_sizeof_intptr_t)
       ac_cv_int_type_cell="intptr_t"
       ;;
     $ac_cv_sizeof_int128_t)
       ac_cv_int_type_cell="int128_t"
       ;;
   esac
   AC_MSG_RESULT($ac_cv_int_type_cell)
   AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
   
   AC_MSG_CHECKING([for a C type for double-cells])
   ac_cv_int_type_double_cell=none
   case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
     $ac_cv_sizeof_short)
       ac_cv_int_type_double_cell=short
       ;;
     $ac_cv_sizeof_int)
       ac_cv_int_type_double_cell=int
       ;;
     $ac_cv_sizeof_long)
       ac_cv_int_type_double_cell=long
       ;;
     $ac_cv_sizeof_long_long)
       ac_cv_int_type_double_cell="long long"
       ;;
     $ac_cv_sizeof_intptr_t)
       ac_cv_int_type_double_cell="intptr_t"
       ;;
     $ac_cv_sizeof_int128_t)
       ac_cv_int_type_double_cell="int128_t"
       ;;
   esac
   AC_MSG_RESULT($ac_cv_int_type_double_cell)
   
   AC_MSG_CHECKING([for a C type for unsigned double-cells])
   ac_cv_int_type_double_ucell=none
   case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
     $ac_cv_sizeof_short)
       ac_cv_int_type_double_ucell="unsigned short"
       ;;
     $ac_cv_sizeof_int)
       ac_cv_int_type_double_ucell="unsigned int"
       ;;
     $ac_cv_sizeof_long)
       ac_cv_int_type_double_ucell="unsigned long"
       ;;
     $ac_cv_sizeof_long_long)
       ac_cv_int_type_double_ucell="unsigned long long"
       ;;
     $ac_cv_sizeof_intptr_t)
       ac_cv_int_type_double_ucell="unsigned intptr_t"
       ;;
     $ac_cv_sizeof_uint128_t)
       ac_cv_int_type_double_ucell="uint128_t"
       ;;
   esac
   AC_MSG_RESULT($ac_cv_int_type_double_ucell)
   
   if test "$ac_cv_int_type_double_cell" = none || \
      test "$ac_cv_int_type_double_ucell" = none
   then
           AC_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
           AC_LIBOBJ(dblsub)
           AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
   else
           AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])
           AC_DEFINE_UNQUOTED(DOUBLE_UCELL_TYPE,$ac_cv_int_type_double_ucell,[an unsigned integer type that is twice as long as a pointer])
   fi
   
   AC_TYPE_OFF_T
   AC_CHECK_SIZEOF(off_t)
   test $ac_cv_sizeof_off_t -gt $ac_cv_sizeof_char_p
   ac_small_off_t=$?
   AC_DEFINE_UNQUOTED(SMALL_OFF_T,$ac_small_off_t,[1 if off_t fits in a Cell])
   
   ENGINE_FLAGS=
 AC_SUBST(ENGINE_FLAGS)  AC_SUBST(ENGINE_FLAGS)
   
 # Try if GCC understands -fno-cross-jump  # Try if GCC understands -fno-gcse
   
   AC_MSG_CHECKING([if $CC understands -fno-gcse])
   CFLAGS_1="$CFLAGS"
   CFLAGS="$CFLAGS -fno-gcse"
   AC_TRY_COMPILE(,,ac_nogcse=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-gcse",ac_nogcse=no)
   CFLAGS="$CFLAGS_1"
   AC_MSG_RESULT($ac_nogcse)
   
   # Try if GCC understands -fno-strict-aliasing
   AC_MSG_CHECKING([if $CC understands -fno-strict-aliasing])
   CFLAGS_1="$CFLAGS"
   CFLAGS="$CFLAGS -fno-strict-aliasing"
   AC_TRY_COMPILE(,,ac_nostrictaliasing=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-strict-aliasing",ac_nostrictaliasing=no)
   CFLAGS="$CFLAGS_1"
   AC_MSG_RESULT($ac_nostrictaliasing)
   
   # Try if GCC understands -fno-crossjumping
   AC_MSG_CHECKING([if $CC understands -fno-crossjumping])
 CFLAGS_1="$CFLAGS"  CFLAGS_1="$CFLAGS"
 CFLAGS="$CFLAGS -fno-cross-jump"  CFLAGS="$CFLAGS -fno-crossjumping"
 AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1")  AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-crossjumping",ac_nocrossjumping=no)
   CFLAGS="$CFLAGS_1"
   AC_MSG_RESULT($ac_nocrossjumping)
   
   # Try if GCC understands -fno-reorder-blocks
   AC_MSG_CHECKING([if $CC understands -fno-reorder-blocks])
   CFLAGS_1="$CFLAGS"
   CFLAGS="$CFLAGS -fno-reorder-blocks"
   AC_TRY_COMPILE(,,ac_noreorder_blocks=yes;ENGINE_FLAGS="$ENGINE_FLAGS -fno-reorder-blocks",ac_noreorder_blocks=no)
   CFLAGS="$CFLAGS_1"
   AC_MSG_RESULT($ac_noreorder_blocks)
   
   # Try if GCC understands __attribute__((unused))
   AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
   AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
   AC_DEFINE_UNQUOTED(MAYBE_UNUSED,$MAYBE_UNUSED,[attribute for possibly unused variables])
   AC_MSG_RESULT($MAYBE_UNUSED)
   
 AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)  AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
 AC_SUBST(asm_fs)  AC_SUBST(asm_fs)
Line 254  AC_SUBST(asm_fs) Line 394  AC_SUBST(asm_fs)
 AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)  AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
 AC_SUBST(disasm_fs)  AC_SUBST(disasm_fs)
   
   AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin)
   
 case "$host_os" in  case "$host_os" in
         *win32)          *win32|cygwin)
                 EXE=".exe"                  DIRSEP="\\\\"
                 DIRSEP="\\"                  PATHSEP=";"
                   #we want the builtins of command.com/cmd.exe and its
                   # handling of .com files.
                   #$COMSPEC contains the name of the Windows shell;
                   # the ./ is there, because the bash does not recognize
                   # absolute DOS filenames
                   DEFAULTSYSTEMPREFIX="./$COMSPEC /c "
                   ;;
           *darwin*)
                   #Darwin uses some funny preprocessor by default; eliminate it:
                   AC_MSG_NOTICE([using -no-cpp-precomp on Darwin])
                   CFLAGS="$CFLAGS -no-cpp-precomp"
                   DIRSEP="/"
                   PATHSEP=":"
                   DEFAULTSYSTEMPREFIX=""
                 ;;                  ;;
         *)          *)
                 EXE=""  
                 DIRSEP="/"                  DIRSEP="/"
                   PATHSEP=":"
                   DEFAULTSYSTEMPREFIX=""
                 ;;                  ;;
 esac  esac
 AC_SUBST(EXE)  
 AC_SUBST(DIRSEP)  AC_SUBST(DIRSEP)
 AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])  AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character])
   AC_SUBST(PATHSEP)
   AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])
   AC_SUBST(DEFAULTSYSTEMPREFIX)
   AC_DEFINE_UNQUOTED(DEFAULTSYSTEMPREFIX,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
   
 dnl Now a little support for DOS/DJGCC  dnl Now a little support for DOS/DJGCC
 AC_SUBST(GFORTH_EXE)  AC_SUBST(GFORTH_EXE)
Line 278  GFORTHITC_EXE="" Line 438  GFORTHITC_EXE=""
 AC_SUBST(GFORTHDITC_EXE)  AC_SUBST(GFORTHDITC_EXE)
 GFORTHDITC_EXE=""  GFORTHDITC_EXE=""
   
 PATHSEP=":"  
 AC_SUBST(PATHSEP)  
 AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])  
   
 AC_SUBST(FORTHSIZES)  AC_SUBST(FORTHSIZES)
   
 if test "$PEEPHOLE" = "yes"  dnl if test "$PEEPHOLE" = "yes"
 then  dnl then
    PEEPHOLEFLAG="true"  dnl    PEEPHOLEFLAG="true"
    AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])  dnl    AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization])
 else  dnl else
    PEEPHOLEFLAG="false"  dnl    PEEPHOLEFLAG="false"
 fi  dnl fi
   PEEPHOLEFLAG="true"
 AC_SUBST(PEEPHOLEFLAG)  AC_SUBST(PEEPHOLEFLAG)
   
 dnl copy commands for systems that don't have links  dnl copy commands for systems that don't have links
Line 318  fi Line 475  fi
   
 #check how to do asm(".skip 16")  #check how to do asm(".skip 16")
 AC_MSG_CHECKING([if and how we can waste code space])  AC_MSG_CHECKING([if and how we can waste code space])
 skipcode=no  if test -z "$skipcode"; then
 for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"      for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
 do      do
         AC_TRY_RUN(          AC_TRY_RUN(
 int foo(int);  [int foo(int,int,int);
 main()  main()
 {  {
   exit(foo(0)!=16);    exit(foo(0,0,0)!=16);
 }  }
 int foo(int x)  int foo(int x, int y, int z)
 {  {
     static void *labels[]={&&label1, &&label2};
   if (x) {    if (x) {
       y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
   label1:    label1:
     asm("$i");      asm(".skip 16"); /* or ".space 16" or somesuch */
   label2:    label2: ;
   }    }
   return (&&label2)-(&&label1);    {
 }    if (y) goto *labels[z]; /* workaround for gcc PR12108 */
     return labels[1]-labels[0];
     }
   }]
         ,skipcode=$i; break          ,skipcode=$i; break
         ,,)          ,,)
 done          done
   fi
 AC_MSG_RESULT($skipcode)  AC_MSG_RESULT($skipcode)
 if test "$skipcode" = no  if test "$skipcode" = no
 then   then 
     no_dynamic_default=1      if test -z $no_dynamic_default; then
           no_dynamic_default=1
           AC_MSG_WARN(Disabling default dynamic native code generation)
       fi
     AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)      AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes)
     AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))  
 else  else
     AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)      AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes)
 fi  fi
   
   test "$no_dynamic_default" || no_dynamic_default=0
 AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)  AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic)
   
 dnl Checks for programs.  dnl Checks for programs.
 AC_PROG_LN_S  AC_PROG_LN_S
 dnl AM_PROG_INSTALL #performed by AM_INIT_AUTOMAKE  AC_PROG_INSTALL
   
 dnl Checks for library functions  dnl Checks for library functions
 dnl This check is just for making later checks link with libm.  dnl This check is just for making later checks link with libm.
 dnl using sin here is no good idea since it is built-into gcc and typechecked  dnl using sin here is no good idea since it is built-into gcc and typechecked
 AC_CHECK_LIB(m,asin)  AC_CHECK_LIB(m,asin)
 AC_CHECK_LIB(dl,dlopen)  AC_CHECK_LIB(dl,dlopen)
   dnl check for ffcall libraries
   dnl unfortunately, these four calls are separated out into a library each.
   AC_CHECK_LIB(avcall,__builtin_avcall)
   AC_CHECK_LIB(callback,__vacall_r)
   AC_CHECK_LIB(vacall,vacall)
   AC_CHECK_LIB(trampoline,alloc_trampoline)
   FFCALLFLAG="false"
   OLDCALLFLAG="true"
   test $ac_cv_lib_avcall___builtin_avcall = yes && FFCALLFLAG="true" && OLDCALLFLAG="false" && AC_DEFINE(HAS_FFCALL,,[define this if you want to use the ffcall libraries])
   test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
   AC_SUBST(FFCALLFLAG)
   AC_SUBST(OLDCALLFLAG)
 if test "$host_os" != "nextstep3"  if test "$host_os" != "nextstep3"
 then  then
         AC_FUNC_MEMCMP          AC_FUNC_MEMCMP
 fi  fi
 AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)  AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh)
 AC_CHECK_FUNCS(dlopen sys_siglist getrusage fseeko ftello)  AC_FUNC_FSEEKO
 AC_TYPE_OFF_T  AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage)
   AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])
 AC_DECL_SYS_SIGLIST  AC_DECL_SYS_SIGLIST
 AC_CHECK_FUNC(getopt_long,true,AC_LIBOBJ(getopt); AC_LIBOBJ(getopt1))  AC_CHECK_FUNC(getopt_long,[true],[AC_LIBOBJ(getopt) AC_LIBOBJ(getopt1)])
 AC_CHECK_FUNCS(expm1 log1p)  AC_CHECK_FUNCS(expm1 log1p)
 AC_REPLACE_FUNCS(rint ecvt)  AC_REPLACE_FUNCS(rint ecvt)
 dnl No check for select, because our replacement is no good under  dnl No check for select, because our replacement is no good under
Line 388  AC_SUBST(kernel_fi) Line 567  AC_SUBST(kernel_fi)
 #fi  #fi
   
 AC_SUBST(machine)  AC_SUBST(machine)
 dnl AC_LINK_FILES(arch/$machine,arch/machine) #no longer needed  AC_CONFIG_FILES([
 AC_OUTPUT([  
 Makefile  Makefile
 Makedist  Makedist
 gforthmi  gforthmi
 vmgen  vmgen
 machpc.fs  machpc.fs
 engine/Makefile  engine/Makefile
 doc/version.texi ],  doc/version.texi ])
 echo timestamp > stamp-h  AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h
 chmod +x gforthmi  chmod +x gforthmi
 chmod +x vmgen  chmod +x vmgen
 test -d kernel||mkdir kernel)  test -d kernel||mkdir kernel]],[[]])
   AC_OUTPUT
   

Removed from v.1.93  
changed lines
  Added in v.1.145


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