--- gforth/configure.in 1997/05/21 20:39:21 1.31 +++ gforth/configure.in 2003/01/18 22:00:21 1.100 @@ -1,6 +1,6 @@ dnl Process this file with autoconf to produce a configure script. -#Copyright (C) 1995,1996 Free Software Foundation, Inc. +#Copyright (C) 1995,1996,1997,1998,2000 Free Software Foundation, Inc. #This file is part of Gforth. @@ -16,29 +16,27 @@ dnl Process this file with autoconf to p #You should have received a copy of the GNU General Public License #along with this program; if not, write to the Free Software -#Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. -AC_INIT(engine/engine.c) -AC_CONFIG_HEADER(engine/config.h) +dnl We use some automake macros here, +dnl but don't use automake for creating Makefile.in +AC_INIT([gforth],[0.5.9-20021227],[https://savannah.gnu.org/bugs/?func=addbug&group=gforth]) +#snapshots have numbers major.minor.release-YYYYMMDD +#note that lexicographic ordering must be heeded. +#I.e., 0.4.1-YYYYMMDD must not exist before 0.4.1! +UPDATED="27 December 2002" +AC_SUBST(UPDATED) +AC_CONFIG_HEADERS(engine/config.h) + +#default setting that may be changed later: +no_dynamic_default=0 AC_ARG_ENABLE(force-reg, [ --enable-force-reg Use explicit register 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_REG)) -dnl this is not quite according to the autoconf manual, it causes a replacement -AC_ARG_ENABLE(direct-threaded, -[ --enable-direct-threaded Force direct threading. This may not work on - some machines and may cause slowdown on others. - (default processor-dependent)], -AC_DEFINE(DIRECT_THREADED)) -AC_ARG_ENABLE(indirect-threaded, -[ --enable-indirect-threaded Force indirect threading. This can cause a - slowdown on some machines. - (default processor-dependent)], -AC_DEFINE(INDIRECT_THREADED)) +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_WITH(debug, [ --with-debug specifies option -g to compile with debug info (default) @@ -47,26 +45,50 @@ AC_ARG_WITH(debug, debugging informations.], if test "$withval" = "yes"; then DEBUGFLAG=-g; fi) +PEEPHOLE="yes" +AC_ARG_WITH(peephole, +[ --with-peephole Enable peephole optimization (default) + --without-peephole disables peephole optimization. Creates smaller, + but slower images.], +PEEPHOLE="$withval") + +#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_DEFINE_UNQUOTED([_LARGEFILE_SOURCE],1,[feature test macro]) +AC_DEFINE_UNQUOTED([_FILE_OFFSET_BITS],64,[feature test macro]) + +#currently we force direct threading this way. Eventually we should +#setup in the arch and engine files right + CFLAGS=$CFLAGS AC_PROG_CC -if test "$GCC" = "yes" -then - echo "Fine, gcc is available" -else - cat <<'EOF' -Gforth requires GCC-2.0 or higher (it uses GNU C extensions). -It does not work with other C compilers. Please install the GNU C compiler, -and try again (or search for a binary distribution for your platform). -EOF - exit 1 -fi +test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher) AC_SUBST(CC) -AC_SUBST(GCCLDFLAGS) AC_SUBST(DEBUGFLAG) +dnl gcc-3.2 seems to work fine now +dnl AC_MSG_CHECKING(gcc version) +dnl gcc_version=`$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 "$gcc_version" \< 3.2.1 >/dev/null +dnl then +dnl no_dynamic_default=1 +dnl AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2)) +dnl fi + dnl the following macro produces a warning with autoconf-2.1 AC_CHECK_SIZEOF(char *) case "$ac_cv_sizeof_char_p" in @@ -81,18 +103,25 @@ case "$ac_cv_sizeof_char_p" in ;; esac +AC_CHECK_SIZEOF(char) AC_CHECK_SIZEOF(short) AC_CHECK_SIZEOF(int) AC_CHECK_SIZEOF(long) AC_CHECK_SIZEOF(long long) +AC_CHECK_SIZEOF(intptr_t) +AC_CHECK_SIZEOF(int128_t) +AC_MSG_CHECKING([for a C type for cells]) ac_cv_int_type_cell=none case "$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_int) - ac_cv_int_type_cell=int + $ac_cv_sizeof_char) + ac_cv_int_type_cell=char ;; $ac_cv_sizeof_long) ac_cv_int_type_cell=long @@ -100,14 +129,17 @@ case "$ac_cv_sizeof_char_p" in $ac_cv_sizeof_long_long) ac_cv_int_type_cell="long long" ;; + $ac_cv_sizeof_intptr_t) + ac_cv_int_type_cell="intptr_t" + ;; + $ac_cv_sizeof_int128_t) + ac_cv_int_type_cell="int128_t" + ;; esac -if test "$ac_cv_int_type_cell" != int; then - echo "So, sizeof(pointer)!=sizeof(int); looks like a DOS C compiler to me." - echo "Since you don't have a proper C on this machine, that's one more reason" - echo "to use Forth;-)" -fi -AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell) +AC_MSG_RESULT($ac_cv_int_type_cell) +AC_DEFINE_UNQUOTED(CELL_TYPE,$ac_cv_int_type_cell,[an integer type that is as long as a pointer]) +AC_MSG_CHECKING([for a C type for double-cells]) ac_cv_int_type_double_cell=none case `expr 2 '*' "$ac_cv_sizeof_char_p"` in $ac_cv_sizeof_short) @@ -122,103 +154,176 @@ case `expr 2 '*' "$ac_cv_sizeof_char_p"` $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) if test "$ac_cv_int_type_double_cell" = none; then - echo "Emulating double-cell arithmetic. This may be slow." - echo "If you find this unacceptable, ask the GCC maintainers to provide proper" - echo 'long longs for your machine (the GCC manual states that they \"are twice as' - echo "long as \`long int\'\")." - LIBOBJS="$LIBOBJS dblsub.o" - AC_DEFINE(BUGGY_LONG_LONG) + 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,$ac_cv_int_type_double_cell) + AC_DEFINE_UNQUOTED(DOUBLE_CELL_TYPE,$ac_cv_int_type_double_cell,[an integer type that is twice as long as a pointer]) fi +AC_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,$ac_small_off_t,[1 if off_t fits in a Cell]) + +AC_MSG_CHECKING([whether the linker accepts -export-dynamic]) +OLDLDFLAGS=$LDFLAGS +LDFLAGS="$LDFLAGS -export-dynamic" +dnl AC_TRY_LINK gives false positive on rs6000-ibm-aix4.2.1.0 +dnl AC_TRY_LINK(,,ac_export_dynamic=yes,ac_export_dynamic=no) +AC_TRY_RUN(main(){exit(0);},ac_export_dynamic=yes,ac_export_dynamic=no,ac_export_dynamic=no) +test $ac_export_dynamic = yes|| LDFLAGS=$OLDLDFLAGS +AC_MSG_RESULT($ac_export_dynamic) + #terminology is a bit unusual here: The host is the system on which #gforth will run; the system on which configure will run is the `build' AC_CANONICAL_HOST case "$host_cpu" in hppa*) - mach_h=hppa - LIBOBJS="cache.o" - LDFLAGS="-Xlinker -N" - LIBS="-L/lib/pa1.1/" - if test "${enable_direct_threaded+set}" = "" - then - AC_DEFINE(DIRECT_THREADED) - fi + machine=hppa + $srcdir/mkinstalldirs arch/hppa + AC_LIBOBJ(../arch/hppa/cache) + LDFLAGS="$LDFLAGS -Xlinker -N" + LIBS="$LIBS -L/lib/pa1.1/" ;; sparc*) - mach_h=sparc + machine=sparc ;; i386) - mach_h=386 + machine=386 CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem" - if test "${enable_direct_threaded+set}" = "" \ - -a "${enable_indirect_threaded+set}" = "" - then - echo "Using direct threaded on 386er" - AC_DEFINE(DIRECT_THREADED) - fi ;; i486) - mach_h=386 + machine=386 CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486" - if test "${enable_direct_threaded+set}" = "" \ - -a "${enable_indirect_threaded+set}" = "" - then - echo "Using direct threaded on 486er" - AC_DEFINE(DIRECT_THREADED) - fi ;; - i586|i686) - mach_h=386 - CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem -m486" - if test "${enable_direct_threaded+set}" = "" \ - -a "${enable_indirect_threaded+set}" = "" - then - echo "Using indirect threaded on Pentium and up" - AC_DEFINE(INDIRECT_THREADED) - fi + i*86) + machine=386 + CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -fforce-mem" + CFLAGS_1="$CFLAGS" + CFLAGS="$CFLAGS -march=pentium" + AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486") ;; +#generic should work for IA64 +# ia64*) +# machine=ia64 +# ;; m68k) - mach_h=m68k - CFLAGS="$CFLAGS -fomit-frame-pointer -traditional-cpp" + machine=m68k + CFLAGS="$CFLAGS -fomit-frame-pointer" + if test "$host_os" = "nextstep3" + then + AC_LIBOBJ(termios) + fi ;; mips*) - mach_h=mips - #link text and data segment into the same 256M region! - GCCLDFLAGS="-Xlinker -T -Xlinker 10000000 -Xlinker -D -Xlinker 10400000" + machine=mips + #dynamic native code has the following problems on MIPS: + # + #1) J/JAL seems relocatable, but is are only + #relocatable within a 256MB-segment. While we try to + #get the linker to arrange this, there is no guarantee + #that this will succeed (and if the user uses a lot of + #memory, it is likely to fail). + # + #2) The way we generate dynamic native code may + #violate MIPS architectural restrictions (in + #particular, the delay slots of LW, MFLO, etc.) + # + #Therefore we disable dynamic native code by default: + no_dynamic_default=1 + AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2)) ;; alpha*) - mach_h=alpha + machine=alpha + #full IEEE FP support for more uniformity across platforms: + CFLAGS="$CFLAGS -mieee" ;; - power*) - mach_h=power + power*|rs6000) + machine=power + $srcdir/mkinstalldirs arch/power + AC_CHECK_FUNC(_sync_cache_range,true,AC_LIBOBJ(../arch/power/_sync_cache_range)) ;; *) - echo "No direct threading support for $host_cpu, using indirect threading." - echo "Using a generic machine description." - echo "I'll assume that C floats and doubles are represented by IEEE single and" - echo "double numbers. If this is not so, SF@ etc. will not work correctly." - echo "FLUSH-ICACHE will do nothing, so END-CODE may not work properly!" - mach_h=32bit + AC_MSG_WARN([Using a generic machine description]) + AC_MSG_WARN([Assuming C floats and doubles are IEEE floats and doubles (for SF@ DF@ SF! DF!)]) + AC_MSG_WARN([FLUSH-ICACHE will do nothing, so END-CODE may not work properly!]) + machine=generic + #I-cache flushing would be needed for dynamic code generation + no_dynamic_default=1 + AC_MSG_WARN(Disabling dynamic native code generation by default (speed penalty factor ~2)) esac AC_SUBST(host) AC_SUBST(ENGINE_FLAGS) +# Try if GCC understands -fno-cross-jump + +CFLAGS_1="$CFLAGS" +CFLAGS="$CFLAGS -fno-cross-jump" +AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1") + +AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine) +AC_SUBST(asm_fs) + +AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine) +AC_SUBST(disasm_fs) + +case "$host_os" in + *win32) + EXE=".exe" + DIRSEP="\\" + ;; + *darwin*) + #Darwin uses some funny preprocessor by default; eliminate it: + AC_MSG_NOTICE([using -traditional-cpp on Darwin]) + CFLAGS="$CFLAGS -traditional-cpp" + EXE="" + DIRSEP="/" + ;; + *) + EXE="" + DIRSEP="/" + ;; +esac +AC_SUBST(EXE) +AC_SUBST(DIRSEP) +AC_DEFINE_UNQUOTED(DIRSEP,'$DIRSEP',[a directory separator character]) + dnl Now a little support for DOS/DJGCC AC_SUBST(GFORTH_EXE) GFORTH_EXE="" +AC_SUBST(GFORTHFAST_EXE) +GFORTHFAST_EXE="" +AC_SUBST(GFORTHITC_EXE) +GFORTHITC_EXE="" AC_SUBST(GFORTHDITC_EXE) GFORTHDITC_EXE="" PATHSEP=":" AC_SUBST(PATHSEP) -AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP') +AC_DEFINE_UNQUOTED(PATHSEP,'$PATHSEP',[a path separator character]) AC_SUBST(FORTHSIZES) +if test "$PEEPHOLE" = "yes" +then + PEEPHOLEFLAG="true" + AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization]) +else + PEEPHOLEFLAG="false" +fi +AC_SUBST(PEEPHOLEFLAG) + dnl copy commands for systems that don't have links AC_SUBST(LINK_KERNL) LINK_KERNL="" @@ -242,6 +347,41 @@ else KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi" fi +#check how to do asm(".skip 16") +AC_MSG_CHECKING([if and how we can waste code space]) +skipcode=no +for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16" +do + AC_TRY_RUN( +int foo(int); +main() +{ + exit(foo(0)!=16); +} +int foo(int x) +{ + if (x) { + label1: + asm("$i"); + label2: + } + return (&&label2)-(&&label1); +} + ,skipcode=$i; break + ,,) +done +AC_MSG_RESULT($skipcode) +if test "$skipcode" = no +then + no_dynamic_default=1 + 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 + AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes) +fi + +AC_DEFINE_UNQUOTED(NO_DYNAMIC_DEFAULT,$no_dynamic_default,default value for no_dynamic) + dnl Checks for programs. AC_PROG_LN_S AC_PROG_INSTALL @@ -250,27 +390,47 @@ dnl Checks for library functions 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 AC_CHECK_LIB(m,asin) -AC_CHECK_FUNCS(dlopen) AC_CHECK_LIB(dl,dlopen) -AC_CHECK_LIB(kernel32,GetModuleHandle) -AC_FUNC_MEMCMP +if test "$host_os" != "nextstep3" +then + AC_FUNC_MEMCMP +fi AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh) -AC_CHECK_FUNCS(sys_siglist) +AC_FUNC_FSEEKO +AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage) +AC_CHECK_TYPES(stack_t) AC_DECL_SYS_SIGLIST -AC_CHECK_FUNC(getopt_long,getopt_long="",getopt_long="getopt.o getopt1.o") -AC_SUBST(getopt_long) -AC_CHECK_FUNCS(rint expm1 log1p) -AC_REPLACE_FUNCS(ecvt) +AC_CHECK_FUNC(getopt_long,true,AC_LIBOBJ(getopt); AC_LIBOBJ(getopt1)) +AC_CHECK_FUNCS(expm1 log1p) +AC_REPLACE_FUNCS(rint ecvt) dnl No check for select, because our replacement is no good under dnl anything but DOS -AC_CHECK_HEADERS(sys/mman.h) +AC_CHECK_HEADERS(sys/mman.h fnmatch.h) +AC_FUNC_FNMATCH +test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch) AC_CHECK_FUNCS(mmap sysconf getpagesize) +AM_PATH_LISPDIR kernel_fi=kernl${wordsize}${bytesex}.fi AC_SUBST(kernel_fi) -AC_LINK_FILES(arch/${mach_h} $kernel_fi,machine kernel.fi) -AC_OUTPUT([ +#this breaks bindists +#dnl replace srource directory by absolute value +#if test $srcdir = "."; then srcdir=`pwd` +#fi + +AC_SUBST(machine) +AC_CONFIG_FILES([ Makefile -engine/Makefile ],echo timestamp > stamp-h) +Makedist +gforthmi +vmgen +machpc.fs +engine/Makefile +doc/version.texi ]) +AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h +chmod +x gforthmi +chmod +x vmgen +test -d kernel||mkdir kernel]],[[]]) +AC_OUTPUT