Diff for /gforth/configure.in between versions 1.132 and 1.156

version 1.132, 2003/08/25 14:17:44 version 1.156, 2006/02/19 22:35:40
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) 1995,1996,1997,1998,2000,2003 Free Software Foundation, Inc.  #Copyright (C) 1995,1996,1997,1998,2000,2003,2004,2005 Free Software Foundation, Inc.
   
 #This file is part of Gforth.  #This file is part of Gforth.
   
Line 21  dnl Process this file with autoconf to p Line 21  dnl Process this file with autoconf to p
   
 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
 AC_INIT([gforth],[0.6.2],[https://savannah.gnu.org/bugs/?func=addbug&group=gforth])  AC_INIT([gforth],[0.6.2-20060219],[https://savannah.gnu.org/bugs/?func=addbug&group=gforth])
 AC_PREREQ(2.54)  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="August 25, 2003"  UPDATED="September 10, 2003"
 AC_SUBST(UPDATED)  AC_SUBST(UPDATED)
 AC_CONFIG_HEADERS(engine/config.h)  AC_CONFIG_HEADERS(engine/config.h)
   
 #suppress the "-g -O2" default  #suppress the "-g -O2" default
 test "$CFLAGS" || CFLAGS=-O2  test "$CFLAGS" || CFLAGS=-O2
   
 #default setting that may be changed later:  
 test "$no_dynamic_default" || no_dynamic_default=0  
   
 AC_ARG_ENABLE(force-reg,  AC_ARG_ENABLE(force-reg,
 [  --enable-force-reg     Use explicit register declarations if they appear in          AC_HELP_STRING([--enable-force-reg],
                           [ Use explicit register declarations if they appear in
                           the machine.h file. This can cause a good speedup,                            the machine.h file. This can cause a good speedup,
                           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)]))          ,enable_force_reg=no)
   test "$enable_force_reg" = "no"||
     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,
           AC_HELP_STRING([--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).]),
           ,enable_force_ll=no)
   test "$enable_force_ll" = "no"||
     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_ARG_ENABLE(gcc-pr15242-workaround,
                 AC_HELP_STRING([--disable-gcc-pr15242-workaround],[Disables
                                dynamic code generation on some versions of gcc
                                (slowdown~2 on Athlon) and causes slower building
                                of gforth (but gforth speedups) on others.
                                (default enabled)]),
                   ,enable_gcc_pr15242_workaround=yes)
   test "$enable_gcc_pr15242_workaround" = "no"||
   AC_DEFINE(GCC_PR15242_WORKAROUND,,[Define if you want to get dynamic code
   generation on gccs affected by PR15242])
   
   AC_ARG_ENABLE(force-cdiv,
           AC_HELP_STRING([--enable-force-cdiv],
                          [  Use the native C division - symmetric - instead of
                             floored division (default disabled).]),
           ,enable_force_cdiv=no)
   test "$enable_force_cdiv" = "no"||
     AC_DEFINE(FORCE_CDIV,,[Define if you want to use explicit symmetric division for better performance])
   
   AC_SUBST(PROFEXES)
   AC_SUBST(PROFOBJS)
   AC_ARG_ENABLE(prof,
           AC_HELP_STRING([--enable-prof],
                           [ Build gforth-prof, which outputs frequently occuring
                             sequences of primitives.]),
           ,enable_prof=no)
   if test "$enable_prof" = "no"; then
     PROFEXES="gforth-prof\$(EXE)"; PROFOBJS="engine-prof.o main-prof.o profile.o"
   fi
   
 AC_ARG_WITH(debug,  AC_ARG_WITH(debug,
 [  --with-debug           specifies option -g to compile with debug info  [  --with-debug           specifies option -g to compile with debug info
Line 60  dnl PEEPHOLE="$withval") Line 100  dnl PEEPHOLE="$withval")
 #variables mentioned in INSTALL  #variables mentioned in INSTALL
 AC_ARG_VAR(CC, [The C compiler (must support GNU C 2.x); gcc-2.95 recommended.])  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(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
   AC_ARG_VAR(STACK_CACHE_DEFAULT_FAST, [number of registers in the default stack cache state for gforth-fast and gforth-native (default 1).])
 AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)])  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_char, [sizeof(char)])
 AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])  AC_ARG_VAR(ac_cv_sizeof_short, [sizeof(short)])
Line 68  AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(lo Line 109  AC_ARG_VAR(ac_cv_sizeof_long, [sizeof(lo
 AC_ARG_VAR(ac_cv_sizeof_long_long, [sizeof(long 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_intptr_t, [sizeof(intptr_t)])
 AC_ARG_VAR(ac_cv_sizeof_int128_t, [sizeof(int128_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(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(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:  #set up feature test macros, so the tests get them right:
 # turn on all POSIX, SUSv3, and GNU features if available  # turn on all POSIX, SUSv3, and GNU features if available
Line 98  AC_SUBST(CC) Line 141  AC_SUBST(CC)
 AC_SUBST(DEBUGFLAG)  AC_SUBST(DEBUGFLAG)
   
 AC_MSG_CHECKING(make type)  AC_MSG_CHECKING(make type)
 make_type=`make -v 2>&1|grep 'ake version'|sed 's/ version .*//'`  make_type=`make -v 2>&1|grep 'ake'|sed 's/ake .*/ake/'`
   
 GNUMAKE='#'  GNUMAKE='#'
 test "$make_type" = "GNU Make" && GNUMAKE=''  test "$make_type" = "GNU Make" && GNUMAKE=''
Line 107  AC_MSG_RESULT($make_type) Line 150  AC_MSG_RESULT($make_type)
   
 AC_SUBST(GNUMAKE)  AC_SUBST(GNUMAKE)
   
 dnl gcc-3.2 seems to work fine now  
 dnl AC_MSG_CHECKING(gcc version)  
 dnl gcc_version=`$CC -v 2>&1|grep 'gcc version'|sed 's/.*gcc version //'`  
 dnl AC_MSG_RESULT($gcc_version)  
 dnl if expr "$gcc_version" \> 3.0.4 >/dev/null && expr "$gcc_version" \< 3.2.1 >/dev/null  
 dnl then  
 dnl    no_dynamic_default=1  
 dnl    AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))  
 dnl fi  
   
 AC_MSG_CHECKING([whether the linker accepts -export-dynamic])  AC_MSG_CHECKING([whether the linker accepts -export-dynamic])
 OLDLDFLAGS=$LDFLAGS  OLDLDFLAGS=$LDFLAGS
 LDFLAGS="$LDFLAGS -export-dynamic"  LDFLAGS="$LDFLAGS -export-dynamic"
Line 130  AC_MSG_RESULT($ac_export_dynamic) Line 163  AC_MSG_RESULT($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                  $srcdir/mkinstalldirs arch/hppa
                 AC_LIBOBJ(../arch/hppa/cache)                  AC_LIBOBJ(../arch/hppa/cache)
                 #LDFLAGS="$LDFLAGS -Xlinker -N"                  #-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
                   LDFLAGS="$LDFLAGS -Xlinker -N"
                 LIBS="$LIBS -L/lib/pa1.1/"                  LIBS="$LIBS -L/lib/pa1.1/"
                 #executing dynamically generated code produced segfaults on  
                 #the only HPPA machine that could waste code space, so  
                 #disable it by default  
                 no_dynamic_default=1  
                 AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))  
                 ;;                  ;;
         sparc*)          sparc*)
                 machine=sparc                  machine=sparc
Line 160  case "$host_cpu" in Line 197  case "$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")
                 ;;                  ;;
 #generic should work for IA64          x86_64)
 #       ia64*)                  machine=amd64
 #               machine=ia64                  ;;
 #               ;;          ia64*)
                   machine=ia64
                   AC_LIBOBJ(../arch/ia64/flush_icache_block)
                   test "$skipcode" || skipcode="nop.i 0"
                   #".skip 16" passes the test below,
                   # but gives an assembler error in engine
                   ;;
         m68k)          m68k)
                 machine=m68k                  machine=m68k
                 CFLAGS="$CFLAGS -fomit-frame-pointer"                  CFLAGS="$CFLAGS -fomit-frame-pointer"
Line 187  case "$host_cpu" in Line 230  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 $no_dynamic_default; then
                 AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2))                      no_dynamic_default=1
                       AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)])
                   fi
                 ;;                  ;;
         alpha*)          alpha*)
                 machine=alpha                  machine=alpha
Line 198  case "$host_cpu" in Line 243  case "$host_cpu" in
         power*|rs6000)          power*|rs6000)
                 machine=power                  machine=power
                 $srcdir/mkinstalldirs arch/power                  $srcdir/mkinstalldirs arch/power
                 AC_CHECK_FUNC(_sync_cache_range,true,AC_LIBOBJ(../arch/power/_sync_cache_range))                  AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
                 #long long is broken on (at least) gcc-2.95.* for PPC                  #long long is broken on (at least) gcc-2.95.* for PPC
                 test x$ac_cv_sizeof_long_long = x && ac_cv_sizeof_long_long=0                  test x$ac_cv_sizeof_long_long = x && ac_cv_sizeof_long_long=0
                 ;;                  ;;
Line 208  case "$host_cpu" in Line 253  case "$host_cpu" in
                 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                  #I-cache flushing would be needed for dynamic code generation
                 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
                       AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
                   fi
 esac  esac
 AC_SUBST(host)  AC_SUBST(host)
   
   test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1
   AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST,
                      [number of registers in the default stack cache state for gforth-fast and gforth-native])
   
   if test "${enable_force_ll+set}" = set; then
      ac_includes_default="$ac_includes_default
   #include \"arch/generic/128bit.h\""
   fi
   
 dnl the following macro produces a warning with autoconf-2.1  dnl the following macro produces a warning with autoconf-2.1
 AC_CHECK_SIZEOF(char *)  AC_CHECK_SIZEOF(char *)
 case "$ac_cv_sizeof_char_p" in  case "$ac_cv_sizeof_char_p" in
Line 234  AC_CHECK_SIZEOF(long) Line 290  AC_CHECK_SIZEOF(long)
 AC_CHECK_SIZEOF(long long)  AC_CHECK_SIZEOF(long long)
 AC_CHECK_SIZEOF(intptr_t)  AC_CHECK_SIZEOF(intptr_t)
 AC_CHECK_SIZEOF(int128_t)  AC_CHECK_SIZEOF(int128_t)
   AC_CHECK_SIZEOF(uint128_t)
   
 AC_MSG_CHECKING([for a C type for cells])  AC_MSG_CHECKING([for a C type for cells])
 ac_cv_int_type_cell=none  ac_cv_int_type_cell=none
Line 263  esac Line 320  esac
 AC_MSG_RESULT($ac_cv_int_type_cell)  AC_MSG_RESULT($ac_cv_int_type_cell)
 AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])  AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer])
   
   AC_MSG_CHECKING([for a C type for wydes])
   ac_cv_wyde_type_cell=none
   case 2 in
     $ac_cv_sizeof_int)
       ac_cv_wyde_type_cell=int
       ;;
     $ac_cv_sizeof_short)
       ac_cv_wyde_type_cell=short
       ;;
     $ac_cv_sizeof_char)
       ac_cv_wyde_type_cell=char
       ;;
     $ac_cv_sizeof_long)
       ac_cv_wyde_type_cell=long
       ;;
     $ac_cv_sizeof_long_long)
       ac_cv_wyde_type_cell="long long"
       ;;
     $ac_cv_sizeof_intptr_t)
       ac_cv_wyde_type_cell="intptr_t"
       ;;
     $ac_cv_sizeof_int128_t)
       ac_cv_wyde_type_cell="int128_t"
       ;;
   esac
   AC_MSG_RESULT($ac_cv_wyde_type_cell)
   AC_DEFINE_UNQUOTED(WYDE_TYPE,$ac_cv_wyde_type_cell,[an integer type that is 2 bytes long])
   
   AC_MSG_CHECKING([for a C type for tetrabytes])
   ac_cv_tetrabyte_type_cell=none
   case 4 in
     $ac_cv_sizeof_int)
       ac_cv_tetrabyte_type_cell=int
       ;;
     $ac_cv_sizeof_short)
       ac_cv_tetrabyte_type_cell=short
       ;;
     $ac_cv_sizeof_char)
       ac_cv_tetrabyte_type_cell=char
       ;;
     $ac_cv_sizeof_long)
       ac_cv_tetrabyte_type_cell=long
       ;;
     $ac_cv_sizeof_long_long)
       ac_cv_tetrabyte_type_cell="long long"
       ;;
     $ac_cv_sizeof_intptr_t)
       ac_cv_tetrabyte_type_cell="intptr_t"
       ;;
     $ac_cv_sizeof_int128_t)
       ac_cv_tetrabyte_type_cell="int128_t"
       ;;
   esac
   AC_MSG_RESULT($ac_cv_tetrabyte_type_cell)
   AC_DEFINE_UNQUOTED(TETRABYTE_TYPE,$ac_cv_tetrabyte_type_cell,[an integer type that is 4 bytes long])
   
 AC_MSG_CHECKING([for a C type for double-cells])  AC_MSG_CHECKING([for a C type for double-cells])
 ac_cv_int_type_double_cell=none  ac_cv_int_type_double_cell=none
 case `expr 2 '*' "$ac_cv_sizeof_char_p"` in  case `expr 2 '*' "$ac_cv_sizeof_char_p"` in
Line 286  case `expr 2 '*' "$ac_cv_sizeof_char_p"` Line 399  case `expr 2 '*' "$ac_cv_sizeof_char_p"`
     ;;      ;;
 esac  esac
 AC_MSG_RESULT($ac_cv_int_type_double_cell)  AC_MSG_RESULT($ac_cv_int_type_double_cell)
 if test "$ac_cv_int_type_double_cell" = none; then  
   AC_MSG_CHECKING([for a C type for unsigned double-cells])
   ac_cv_int_type_double_ucell=none
   case `expr 2 '*' "$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_MSG_WARN([Emulating double-cell arithmetic. This may be slow.])
         AC_LIBOBJ(dblsub)          AC_LIBOBJ(dblsub)
         AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])          AC_DEFINE(BUGGY_LONG_LONG,,[define this if there is no working DOUBLE_CELL_TYPE on your machine])
 else  else
         AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer])          AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$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  fi
   
 AC_TYPE_OFF_T  AC_TYPE_OFF_T
Line 328  AC_TRY_COMPILE(,,ac_nocrossjumping=yes;E Line 469  AC_TRY_COMPILE(,,ac_nocrossjumping=yes;E
 CFLAGS="$CFLAGS_1"  CFLAGS="$CFLAGS_1"
 AC_MSG_RESULT($ac_nocrossjumping)  AC_MSG_RESULT($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))  # Try if GCC understands __attribute__((unused))
 AC_MSG_CHECKING([how to suppress 'unused variable' warnings])  AC_MSG_CHECKING([how to suppress 'unused variable' warnings])
 AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)  AC_TRY_COMPILE(,[int __attribute__((unused)) foo;], MAYBE_UNUSED='__attribute__((unused))',)
Line 346  case "$host_os" in Line 495  case "$host_os" in
         *win32|cygwin)          *win32|cygwin)
                 DIRSEP="\\\\"                  DIRSEP="\\\\"
                 PATHSEP=";"                  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*)
                 #Darwin uses some funny preprocessor by default; eliminate it:                  #Darwin uses some funny preprocessor by default; eliminate it:
Line 353  case "$host_os" in Line 508  case "$host_os" in
                 CFLAGS="$CFLAGS -no-cpp-precomp"                  CFLAGS="$CFLAGS -no-cpp-precomp"
                 DIRSEP="/"                  DIRSEP="/"
                 PATHSEP=":"                  PATHSEP=":"
                   DEFAULTSYSTEMPREFIX=""
                 ;;                  ;;
         *)          *)
                 DIRSEP="/"                  DIRSEP="/"
                 PATHSEP=":"                  PATHSEP=":"
                   DEFAULTSYSTEMPREFIX=""
                 ;;                  ;;
 esac  esac
 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_SUBST(PATHSEP)
 AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character])  AC_DEFINE_UNQUOTED(PATHSEP,'$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 411  else Line 569  else
 fi  fi
   
 #check how to do asm(".skip 16")  #check how to do asm(".skip 16")
   echo "CFLAGS=$CFLAGS"
   echo "ac_link=$ac_link"
 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 "$skipcode"; then
 for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"      skipcode=no
 do      CFLAGS_1="$CFLAGS"
       CFLAGS="$CFLAGS $ENGINE_FLAGS"
       for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16"
       do
         AC_TRY_RUN(          AC_TRY_RUN(
 int foo(int);  [int foo(int,int,int);
 main()  main()
 {  {
   exit(foo(0)!=16);    exit(foo(0,0,0)!=16);
 }  }
 int foo(int x)  int foo(int x, int y, int z)
 {  {
     static void *labels[]={&&label1, &&label2};
   if (x) {    if (x) {
       y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */
   label1:    label1:
     asm("$i");      asm("$i"); /* or ".space 16" or somesuch */
   label2:    label2: ;
   }    }
   return (&&label2)-(&&label1);    {
 }    if (y) goto *labels[z]; /* workaround for gcc PR12108 */
     return labels[1]-labels[0];
     }
   }]
         ,skipcode=$i; break          ,skipcode=$i; break
         ,,)          ,,)
 done          done
       CFLAGS=$CFLAGS_1
   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.
Line 454  dnl This check is just for making later Line 627  dnl This check is just for making later
 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 libffi 2.x
   AC_CHECK_LIB(ffi,ffi_call)
   if test $ac_cv_lib_ffi_ffi_call = yes
   then
   LIBFFIFLAG="true"
   FFCALLFLAG="false"
   OLDCALLFLAG="false"
   AC_DEFINE(HAS_LIBFFI,,[define this if you want to use the ffcall interface with libffi 2.0])
   else
 dnl check for ffcall libraries  dnl check for ffcall libraries
 dnl unfortunately, these four calls are separated out into a library each.  dnl unfortunately, these four calls are separated out into a library each.
 AC_CHECK_LIB(avcall,__builtin_avcall)  AC_CHECK_LIB(avcall,__builtin_avcall)
 AC_CHECK_LIB(callback,__vacall_r)  AC_CHECK_LIB(callback,__vacall_r)
 AC_CHECK_LIB(vacall,vacall)  AC_CHECK_LIB(vacall,vacall)
 AC_CHECK_LIB(trampoline,alloc_trampoline)  AC_CHECK_LIB(trampoline,alloc_trampoline)
   LIBFFIFLAG="false"
 FFCALLFLAG="false"  FFCALLFLAG="false"
 OLDCALLFLAG="true"  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 = 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])  test $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries])
   fi
   AC_SUBST(LIBFFIFLAG)
 AC_SUBST(FFCALLFLAG)  AC_SUBST(FFCALLFLAG)
 AC_SUBST(OLDCALLFLAG)  AC_SUBST(OLDCALLFLAG)
 if test "$host_os" != "nextstep3"  if test "$host_os" != "nextstep3"
Line 475  AC_FUNC_FSEEKO Line 660  AC_FUNC_FSEEKO
 AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage)  AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage)
 AC_CHECK_TYPES(stack_t,,,[#include <signal.h>])  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

Removed from v.1.132  
changed lines
  Added in v.1.156


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