--- gforth/configure.in 1994/12/12 17:10:33 1.1 +++ gforth/configure.in 2007/12/16 15:22:05 1.199 @@ -1,100 +1,881 @@ dnl Process this file with autoconf to produce a configure script. -AC_INIT(engine.c) + +#Copyright (C) 1995,1996,1997,1998,2000,2003,2004,2005,2006 Free Software Foundation, Inc. + +#This file is part of Gforth. + +#Gforth is free software; you can redistribute it and/or +#modify it under the terms of the GNU General Public License +#as published by the Free Software Foundation; either version 2 +#of the License, or (at your option) any later version. + +#This program is distributed in the hope that it will be useful, +#but WITHOUT ANY WARRANTY; without even the implied warranty of +#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.#See the +#GNU General Public License for more details. + +#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., 59 Temple Place, Suite 330, Boston, MA 02111, USA. + + +dnl We use some automake macros here, +dnl but don't use automake for creating Makefile.in +AC_INIT([gforth],[0.6.9-20070604],[https://savannah.gnu.org/bugs/?func=addbug&group=gforth]) +AC_PREREQ(2.54) +#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="June 02, 2007" +AC_SUBST(UPDATED) +AC_CONFIG_HEADERS(engine/config.h) + +#suppress the "-g -O2" default +test "$CFLAGS" || CFLAGS=-O2 AC_ARG_ENABLE(force-reg, -[ --enable-force-reg Use explicit register declarations if they appear in + AC_HELP_STRING([--enable-force-reg], + [ Use explicit register declarations if they appear in the machine.h file. This can cause a good speedup, but also incorrect code with some gcc versions on - some processors (default disabled).], + some processors (default disabled).]), + ,enable_force_reg=no) +test "$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 "$enable_force_ll" = "no"|| + AC_DEFINE(FORCE_LL,,[Define if you want to use explicit long long declarations for better performance (does not work with all GCC versions on all machines)]) + +AC_ARG_ENABLE(force-cdiv, + AC_HELP_STRING([--enable-force-cdiv], + [ Use the native C division - symmetric - instead of + floored division (default disabled).]), + ,enable_force_cdiv=no) +test "$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 "$enable_prof" = "no"; then + PROFEXES="gforth-prof\$(EXE)"; PROFOBJS="engine-prof.o main-prof.o profile.o" +fi -AC_DEFINE(FORCE_REG)) -dnl this is not quite according to the autoconf manual, it causes a replacement -AC_ARG_ENABLE(direct-threaded, -[ --enable-direct-threaded Force direct threading. This may not work on - some machines and may cause slowdown on others. - (default processor-dependent)], -AC_DEFINE(DIRECT_THREADED)) -AC_ARG_ENABLE(indirect-threaded, -[ --enable-indirect-threaded Force indirect threading. This can cause a - slowdown on some machines. - (default processor-dependent)], -AC_DEFINE(INDIRECT_THREADED)) +AC_ARG_WITH(debug, +[ --with-debug specifies option -g to compile with debug info + --without-debug omits the -g switch and creates smaller images on + machines where "strip" has problems with gcc style + debugging informations.], +if test "$withval" = "yes"; then DEBUGFLAG=-g; fi) + +dnl PEEPHOLE="yes" +dnl AC_ARG_WITH(peephole, +dnl [ --with-peephole Enable peephole optimization (default) +dnl --without-peephole disables peephole optimization. Creates smaller, +dnl but slower images.], +dnl PEEPHOLE="$withval") + +GCC_LD="\$(GCC)" +EC_MODE="false" +EC="" +engine2="engine2.o" +engine_fast2="engine-fast2.o" +no_dynamic="" +image_i="" +signals_o="io.o signals.o" + +AC_ARG_WITH(ec, + AC_HELP_STRING([--with-ec=], + [ Build gforth for systems without OS.]), +[if test "$withval" = "no"; then + echo "defining hosted system" +else + echo "defining standalone system (${withval})" + AC_DEFINE(STANDALONE,,[Define if you want a Gforth without OS]) + EC_MODE="true" + EC="-ec" + engine2="" + engine_fast2="" + no_dynamic="-DNO_DYNAMIC" + image_i="image.i" + if test "$withval" != "yes"; then + signals_o="io-${withval}.o" + else + signals_o="io.o" + fi + GCC_PATH=$(which $CC) + LIB_PATH=${GCC_PATH%/*/*} + GCC_LD="\$(LD)" + platform=${withval} +fi]) + +#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(STACK_CACHE_DEFAULT_FAST, [number of registers in the default stack cache state for gforth-fast and gforth-native (default 1).]) +AC_ARG_VAR(GCC_PR15242_WORKAROUND, [Force the enabling (1) or disabling (0) of a workaround for a gcc-3.x performance bug (default unset: use workaround for gcc-3.x)]) + +AC_ARG_VAR(ac_cv_sizeof_char_p, [sizeof(char *)]) +AC_ARG_VAR(ac_cv_sizeof_void_p, [sizeof(void *)]) +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(condbranch_opt, [enable (1) or disable (0) using two dispatches for conditional branches]) +AC_ARG_VAR(skipcode, [assembly code for skipping 16 bytes of code]) +AC_ARG_VAR(asmcomment, [assembler comment start string]) +AC_ARG_VAR(arm_cacheflush, [file containing ARM cacheflush function (without .c)]) + +#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 +#setup in the arch and engine files right + +AC_PROG_CC + +test "$GCC" = "yes" || AC_MSG_ERROR(Gforth uses GNU C extensions and requires GCC 2.0 or higher) + +AC_MSG_CHECKING([whether to use two dispatches per conditional branch]) +test x$condbranch_opt = x && +if ($CC -v 2>&1 |grep -q 'gcc version 3'); then + condbranch_opt=0 +else + condbranch_opt=1 +fi +AC_MSG_RESULT($condbranch_opt) +AC_SUBST(condbranch_opt) + +AC_SUBST(CC) +AC_SUBST(GCC_LD) +AC_SUBST(DEBUGFLAG) +AC_SUBST(EC) +AC_SUBST(EC_MODE) +AC_SUBST(engine2) +AC_SUBST(engine_fast2) +AC_SUBST(no_dynamic) +AC_SUBST(image_i) +AC_SUBST(signals_o) + +#this is used to disable some (not generally essential) part of the +#Makefile that some makes don't grok. It would be better to test for +#this specific Makefile feature than the make version. +AC_MSG_CHECKING(make type) +make_type=`make -n -v 2>&1|grep 'ake'|sed 's/ake .*/ake/'` +GNUMAKE='#' +test "$make_type" = "GNU Make" && GNUMAKE='' +AC_MSG_RESULT($make_type) +AC_SUBST(GNUMAKE) + +AC_MSG_CHECKING([whether the linker accepts -export-dynamic]) +OLDLDFLAGS=$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 + arm*) + machine=arm + CFLAGS="$CFLAGS -fomit-frame-pointer" + if test x$platform = xnxt; then + CFLAGS="$CFLAGS -mthumb -mthumb-interwork" + fi + if test -z $arm_cacheflush; then + no_dynamic_default=1 + arm_cacheflush=arch/arm/cacheflush0 + AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation]) + fi + AC_LIBSOURCES([../arch/arm/cacheflush0, ../arch/arm/cacheflush1, ../arch/arm/cacheflush2]) + AC_LIBOBJ(../$arm_cacheflush) + #longer skipcodes lead to problems on ARM, and it uses + #only 4-byte alignment anyway + test "$skipcode" || skipcode="nop" + ;; hppa*) - mach_h=hppa + machine=hppa + $srcdir/mkinstalldirs arch/hppa + AC_LIBOBJ(../arch/hppa/cache) + #-N needed for --dynamic + LDFLAGS="$LDFLAGS -Xlinker -N" + LIBS="$LIBS -L/lib/pa1.1/" ;; sparc*) - mach_h=sparc + machine=sparc + ;; + i386) + machine=386 + CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr" ;; - i386|i486|i586) - mach_h=386 - #!! direct/indirect threading switch - #!! -m486 flag + i486) + machine=386 + CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -m486" ;; - m68*) - mach_h=m68k + i*86) + machine=386 + CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr" + CFLAGS_1="$CFLAGS" + CFLAGS="$CFLAGS -march=pentium" + AC_TRY_COMPILE(,,,CFLAGS="$CFLAGS_1 -m486") + ;; + x86_64) + case $CC + in + *-m32*) + machine=386 + CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr" + CFLAGS_1="$CFLAGS" + CFLAGS="$CFLAGS -march=athlon64" + ;; + *) + machine=amd64 + ;; + esac + ;; + ia64*) + machine=ia64 + AC_LIBOBJ(../arch/ia64/flush_icache_block) + test "$skipcode" || skipcode="nop.i 0" + #".skip 16" passes the test below, + # but gives an assembler error in engine + ;; + m68k) + machine=m68k + CFLAGS="$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! - #!! does cacheflush work on OSs other than Ultrix? + 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: + if test -z $no_dynamic_default; then + no_dynamic_default=1 + AC_MSG_WARN([Disabling default dynamic native code generation (relocation and delay slot issues)]) + fi + ;; + alpha*) + machine=alpha + #full IEEE FP support for more uniformity across platforms: + CFLAGS="$CFLAGS -mieee" + ;; + power*|rs6000) + machine=power + $srcdir/mkinstalldirs arch/power + AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)]) + #long long is broken on (at least) gcc-2.95.* for PPC + test x$ac_cv_sizeof_long_long = x && + ($CC -v 2>&1 |grep -q 'gcc version 2.95') && + ac_cv_sizeof_long_long=0 + ;; + *) + 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 + if test -z $no_dynamic_default; then + no_dynamic_default=1 + AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation]) + fi +esac +AC_SUBST(host) + +MAKEINC="" + +echo "Check for arch/$machine/$platform/gforth.ld ($EC_MODE)" +if test x$EC_MODE = xtrue +then + echo "Check for arch/$machine/$platform/gforth.ld" + if test -f arch/$machine/$platform/gforth.ld + then + LDFLAGS="-T ../arch/$machine/$platform/gforth.ld -Map \$@.map -cref --gc-sections $LDFLAGS" + if test x$platform = xnxt; then + LIBS="$LIB_PATH/lib/gcc/arm-elf/$($CC --version | grep GCC | cut -d' ' -f3)/interwork/libgcc.a $LIB_PATH/arm-elf/lib/interwork/libc.a $LIBS" + fi + fi + if test -f arch/$machine/$platform/make.inc + then + MAKEINC="include ../arch/$machine/$platform/make.inc" + fi +fi +AC_SUBST(MAKEINC) + +test x$STACK_CACHE_DEFAULT_FAST = x && STACK_CACHE_DEFAULT_FAST=1 +AC_DEFINE_UNQUOTED(STACK_CACHE_DEFAULT_FAST, $STACK_CACHE_DEFAULT_FAST, + [number of registers in the default stack cache state for gforth-fast and gforth-native]) + +test x$GCC_PR15242_WORKAROUND = x || +AC_DEFINE_UNQUOTED(GCC_PR15242_WORKAROUND, $GCC_PR15242_WORKAROUND, + [force (1) or forbid (0) use of a workaround for a gcc performance bug]) + +dnl AC_DEFINE(GCC_PR15242_WORKAROUND,,[Define if you want to get dynamic code +dnl generation on gccs affected by PR15242]) + + +if test "${enable_force_ll+set}" = set; then + ac_includes_default="$ac_includes_default +#include \"arch/generic/128bit.h\"" +fi + +dnl the following macro produces a warning with autoconf-2.1 +AC_CHECK_SIZEOF(char *) +case "$ac_cv_sizeof_char_p" in + 2) + wordsize=16 + ;; + 4) + wordsize=32 + ;; + 8) + wordsize=64 + ;; +esac + +AC_CHECK_SIZEOF(void *) +case "$ac_cv_sizeof_void_p" in + 2) + vwordsize=16 + ;; + 4) + vwordsize=32 + ;; + 8) + vwordsize=64 + ;; +esac + +AC_CHECK_SIZEOF(char) +AC_CHECK_SIZEOF(short) +AC_CHECK_SIZEOF(int) +AC_CHECK_SIZEOF(long) +AC_CHECK_SIZEOF(long long) +AC_CHECK_SIZEOF(intptr_t) +AC_CHECK_SIZEOF(int128_t) +AC_CHECK_SIZEOF(uint128_t) + +AC_MSG_CHECKING([for a C type for cells]) +ac_cv_int_type_cell=none +case "$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 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,$ac_cv_tetrabyte_type_cell,[an integer type that is 4 bytes long]) + +AC_MSG_CHECKING([for a C type for double-cells]) +ac_cv_int_type_double_cell=none +case `expr 2 '*' "$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) + +# 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="$CFLAGS -fno-crossjumping" +AC_TRY_COMPILE(,,ac_nocrossjumping=yes;ENGINE_FLAGS="$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 -falign-labels=1 +AC_MSG_CHECKING([if $CC understands -falign-labels=1]) +CFLAGS_1="$CFLAGS" +CFLAGS="$CFLAGS -falign-labels=1" +AC_TRY_COMPILE(,,ac_align_labels=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-labels=1",ac_align_labels=no) +CFLAGS="$CFLAGS_1" +AC_MSG_RESULT($ac_align_labels) + +# Try if GCC understands -falign-loops=1 +AC_MSG_CHECKING([if $CC understands -falign-loops=1]) +CFLAGS_1="$CFLAGS" +CFLAGS="$CFLAGS -falign-loops=1" +AC_TRY_COMPILE(,,ac_align_loops=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-loops=1",ac_align_loops=no) +CFLAGS="$CFLAGS_1" +AC_MSG_RESULT($ac_align_loops) + +# Try if GCC understands -falign-jumps=1 +AC_MSG_CHECKING([if $CC understands -falign-jumps=1]) +CFLAGS_1="$CFLAGS" +CFLAGS="$CFLAGS -falign-jumps=1" +AC_TRY_COMPILE(,,ac_align_jumps=yes;ENGINE_FLAGS="$ENGINE_FLAGS -falign-jumps=1",ac_align_jumps=no) +CFLAGS="$CFLAGS_1" +AC_MSG_RESULT($ac_align_jumps) + +# 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) + +#try if m4 understands -s +AC_MSG_CHECKING([how to invoke m4]) +if m4 -s /dev/null >/dev/null 2>&1; then + M4="m4 -s" +else + M4=m4 +fi +AC_SUBST(M4) +AC_DEFINE_UNQUOTED(M4,"$M4",[How to invoke m4]) +AC_MSG_RESULT($M4) + +echo "machine='$machine'" + +dnl AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine) +AC_CHECK_FILE($srcdir/arch/$machine/asm.fs,[asm_fs=arch/$machine/asm.fs],) +AC_SUBST(asm_fs) + +dnl AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine) +AC_CHECK_FILE($srcdir/arch/$machine/disasm.fs,[disasm_fs=arch/$machine/disasm.fs],) +AC_SUBST(disasm_fs) + +AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$PATH:/sbin:/usr/sbin:/usr/local/sbin) + +case "$host_os" in + *win32*) + # !!!FIXME!!! problems with cygwin and ';' as path separator + DIRSEP="\\\\" + PATHSEP=";" + #we want the builtins of command.com/cmd.exe and its + # handling of .com files. + #$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="" ;; *) - echo "No direct threading support for $host_cpu, using indirect threading." - echo "Using a generic 32-bit machine description. It will only work if char * AND" - echo "long values have 32 bits." - echo "I'll assume that C floats and doubles are represented by IEEE single and" - echo "double numbers. If this is not so, SF@ etc. will not work correctly." - mach_h=32bit + DIRSEP="/" + PATHSEP=":" + DEFAULTSYSTEMPREFIX="" + ;; esac +AC_SUBST(DIRSEP) +AC_DEFINE_UNQUOTED(DIRSEP,'$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]) + +#work around SELinux brain damage (from Andrew Haley <12t8f3jakb74g2c@news.supernews.com>) +#This magic incantation seems to be completely undocumented. +AC_CHECK_PROG([MASSAGE_EXE],[chcon],[chcon -t unconfined_execmem_exec_t],[true]) dnl Now a little support for DOS/DJGCC -AC_SUBST(MAKE_EXE) -MAKE_EXE="" +AC_SUBST(GFORTH_EXE) +GFORTH_EXE="" +AC_SUBST(GFORTHFAST_EXE) +GFORTHFAST_EXE="" +AC_SUBST(GFORTHITC_EXE) +GFORTHITC_EXE="" +AC_SUBST(GFORTHDITC_EXE) +GFORTHDITC_EXE="" + +AC_SUBST(FORTHSIZES) + +dnl if test "$PEEPHOLE" = "yes" +dnl then +dnl PEEPHOLEFLAG="true" +dnl AC_DEFINE(HAS_PEEPHOLE,,[Define if you want to use peephole optimization]) +dnl else +dnl PEEPHOLEFLAG="false" +dnl fi +PEEPHOLEFLAG="true" +AC_SUBST(PEEPHOLEFLAG) dnl copy commands for systems that don't have links -AC_SUBST(LINK_KERNL32L) -LINK_KERNL32L="" -AC_SUBST(LINK_KERNL32B) -LINK_KERNL32B="" +AC_SUBST(LINK_KERNL) +LINK_KERNL="" #if test $host_os=dos #then # echo Configuring for DOS!!! # MAKE_EXE="coff2exe gforth" -# LINK_KERNL32L='$(CP) kernl32l.fi gforth.fi' +# LINK_KERNL='$(CP) kernl32l.fi kernel.fi' #fi dnl the following macro produces a warning with autoconf-2.1 AC_C_BIGENDIAN +AC_SUBST(KERNEL) dnl ac_cv_c_bigendian is an undocumented variable of autoconf-2.1 if test $ac_cv_c_bigendian = yes; then bytesex=b + KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi" else bytesex=l + KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi" +fi + +#check how to do asm(".skip 16") +#echo "CFLAGS=$CFLAGS" +#echo "ac_link=$ac_link" +AC_MSG_CHECKING([if and how we can waste code space]) +if test -z "$skipcode"; then + skipcode=no + CFLAGS_1="$CFLAGS" + CFLAGS="$CFLAGS $ENGINE_FLAGS" + for i in ".skip 16" ".block 16" ".org .+16" ".=.+16" ".space 16" + do + AC_TRY_RUN( +[int foo(int,int,int); +main() +{ + exit(foo(0,0,0)!=16); +} +int foo(int x, int y, int z) +{ + static void *labels[]={&&label1, &&label2}; + if (x) { + y++; /* workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12108 */ + label1: + asm("$i"); /* or ".space 16" or somesuch */ + label2: ; + } + { + if (y) goto *labels[z]; /* workaround for gcc PR12108 */ + return labels[1]-labels[0]; + } +}] + ,skipcode=$i; break + ,,) + done + CFLAGS=$CFLAGS_1 +fi +AC_MSG_RESULT($skipcode) +if test "$skipcode" = no +then + if test -z $no_dynamic_default; then + no_dynamic_default=1 + AC_MSG_WARN(Disabling default dynamic native code generation) + fi + AC_DEFINE_UNQUOTED(SKIP16,((void)0),statement for skipping 16 bytes) +else + AC_DEFINE_UNQUOTED(SKIP16,asm("$skipcode"),statement for skipping 16 bytes) +fi + +AC_MSG_CHECKING([if and how we can do comments in asm statements]) +#the point here is to get asm statements that look different to +#gcc's "optimizer" +if test -z "$asmcomment"; then + asmcomment=no + CFLAGS_1="$CFLAGS" + CFLAGS="$CFLAGS $ENGINE_FLAGS" + for i in '"# "' '"! "' '"; "'; do + AC_TRY_COMPILE(,[asm($i"fluffystunk");],asmcomment=$i; break,) + done + CFLAGS=$CFLAGS_1 +fi +AC_MSG_RESULT($asmcomment) +if test "$asmcomment" != no +then + AC_DEFINE_UNQUOTED(ASMCOMMENT,$asmcomment,[assembler comment start string]) fi +test "$no_dynamic_default" || no_dynamic_default=0 +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 +AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi) + +dnl MacOS X has a libtool that does something else +AC_CHECK_PROGS(GNU_LIBTOOL,glibtool libtool) dnl Checks for library functions -AC_FUNC_MEMCMP -AC_REPLACE_FUNCS(memmove strtoul) -AC_CHECK_FUNC(getopt_long,getop_long="",getopt_long="getopt.o getopt1.o") -AC_SUBST(getopt_long) dnl This check is just for making later checks link with libm. -AC_CHECK_LIB(m,sin) -AC_CHECK_FUNCS(rint) -AC_REPLACE_FUNCS(ecvt) +dnl using sin here is no good idea since it is built-into gcc and typechecked +AC_CHECK_LIB(m,asin) +AC_CHECK_LIB(ltdl,lt_dlinit) +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 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) +LIBFFIFLAG="false" +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 $ac_cv_lib_avcall___builtin_avcall = no && AC_DEFINE(HAS_OLDCALL,,[define this if you want to use the old call libraries]) +fi +AC_SUBST(LIBFFIFLAG) +AC_SUBST(FFCALLFLAG) +AC_SUBST(OLDCALLFLAG) +if test "$host_os" != "nextstep3" +then + AC_FUNC_MEMCMP +fi +AC_REPLACE_FUNCS(memmove strtoul pow10 strerror strsignal atanh) +AC_FUNC_FSEEKO +AC_CHECK_FUNCS(ftello dlopen sys_siglist getrusage nanosleep) +AC_CHECK_TYPES(stack_t,,,[#include ]) +AC_DECL_SYS_SIGLIST +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 fnmatch.h) +AC_FUNC_FNMATCH +test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch) +AC_CHECK_FUNCS(mmap sysconf getpagesize) +AM_PATH_LISPDIR + +kernel_fi=kernl${vwordsize}${bytesex}.fi +include_fi=kernl${wordsize}${bytesex}${EC}.fi +AC_SUBST(kernel_fi) +AC_SUBST(include_fi) + +#this breaks bindists +#dnl replace srource directory by absolute value +#if test $srcdir = "."; then srcdir=`pwd` +#fi -dnl autoconf requires (implicitly) that AC_LINK_FILES is used only once -AC_LINK_FILES(${mach_h}.h kernl32${bytesex}.fi,machine.h gforth.fi) -AC_OUTPUT(Makefile) +AC_SUBST(machine) +AC_CONFIG_FILES([ +Makefile +Makedist +gforthmi +vmgen +machpc.fs +envos.fs +engine/Makefile +engine/libcc.h +doc/version.texi +build-ec ]) +AC_CONFIG_COMMANDS([stamp-h],[[echo timestamp > stamp-h +chmod +x gforthmi +chmod +x vmgen +chmod +x build-ec +test -d kernel||mkdir kernel +$srcdir/mkinstalldirs include/gforth/$PACKAGE_VERSION +ln -sf ../../../engine/config.h ../../../engine/libcc.h include/gforth/$PACKAGE_VERSION]],[[PACKAGE_VERSION=$PACKAGE_VERSION]]) +AC_OUTPUT