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[gforth] /
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configure.in
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Sun Jul 25 14:33:01 2010 UTC (12 years, 10 months ago) by
dvdkhlng
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cross compilation fix #1: do not use AC_CHECK_FILE() to check for source
files. AC_CHECK_FILE() checks for any files in the host filesystem and is not
allowed for cross compilation. autoconf manual recommends using 'test -f' in
that case.
dnl Process this file with autoconf to produce a configure script.
#Copyright (C) 1995,1996,1997,1998,2000,2003,2004,2005,2006,2007,2008,2009 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 3
#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, see http://www.gnu.org/licenses/.
dnl We use some automake macros here,
dnl but don't use automake for creating Makefile.in
AC_INIT([gforth],[0.7.0-20100725],[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="November 8, 2008"
AC_SUBST(UPDATED)
AC_CONFIG_HEADERS(engine/config.h)
#remnants from having ltdl as convenience library
LTDLDEPS=""
LTDLINCL=""
LIBLTDL=""
LTDL_LDLIBS=""
AC_SUBST(LTDLDEPS)
AC_SUBST(LTDLINCL)
AC_SUBST(LIBLTDL)
AC_SUBST(LTDL_LDLIBS)
#suppress the "-g -O2" default
test "$CFLAGS" || CFLAGS=-O2
AC_ARG_ENABLE(force-cdiv,
AC_HELP_STRING([--enable-force-cdiv],
[ Use the native C division - symmetric - instead of
floored division (default disabled).]),
,enable_force_cdiv=no)
test "$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 "$enable_prof" != "no"; then
PROFEXES='gforth-prof$(OPT)$(EXE)'; PROFOBJS='engine-prof$(OPT).o main-prof$(OPT).o profile$(OPT).o'
fi
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 "$withval" = "yes"; then DEBUGFLAG=-g; fi)
GCC_LD="\$(GCC)"
EC_MODE="false"
NO_EC=""
EC=""
engine2='engine2$(OPT).o'
engine_fast2='engine-fast2$(OPT).o'
no_dynamic=""
image_i=""
signals_o="io.o signals.o"
AC_CANONICAL_HOST
AC_ARG_WITH(ec,
AC_HELP_STRING([--with-ec=<arch>],
[ Build gforth for systems without OS.]),
[if test "$withval" = "no"; then
echo "defining hosted system"
else
echo "defining standalone system (${withval})"
AC_DEFINE(STANDALONE,,[Define if you want a Gforth without OS])
EC_MODE="true"
EC="-ec"
NO_EC="#"
engine2=""
engine_fast2=""
no_dynamic="-DNO_DYNAMIC"
image_i="image.i"
if test "$withval" != "yes"; then
signals_o="io-${withval}.o"
else
signals_o="io.o"
fi
if test -f "arch/$host_cpu/${withval}/config.sh"; then
source "arch/$host_cpu/${withval}/config.sh"
fi
GCC_PATH=$(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).])
AC_ARG_VAR(FORTHSIZES, [Gforth command line options for the default stack and dictionary sizes (see INSTALL).])
AC_ARG_VAR(STACK_CACHE_REGS, [number of registers in the maximum stack cache state for gforth-fast and gforth-native (default platform-dependent).])
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(LIBCC_BUILD_SRC, [(Additional) libcc interface source files that should be processed on building and installation (default none)])
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)])
AC_ARG_VAR(LTDL_LIBRARY_PATH, [additional directories for libltdl (for some 64-bit platforms)])
#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 'gcc version 3' >/dev/null); then
condbranch_opt=0
else
condbranch_opt=1
fi
AC_MSG_RESULT($condbranch_opt)
AC_SUBST(condbranch_opt)
AC_SUBST(CC)
AC_SUBST(GCC_LD)
AC_SUBST(DEBUGFLAG)
AC_SUBST(EC)
AC_SUBST(NO_EC)
AC_SUBST(EC_MODE)
AC_SUBST(engine2)
AC_SUBST(engine_fast2)
AC_SUBST(no_dynamic)
AC_SUBST(image_i)
AC_SUBST(signals_o)
#this is used to disable some (not generally essential) part of the
#Makefile that some makes don't grok. It would be better to test for
#this specific Makefile feature than the make version.
AC_MSG_CHECKING(make type)
make_type=`make -n -v 2>&1|grep 'ake'|sed 's/ake .*/ake/'`
GNUMAKE='#'
test "$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($ac_export_dynamic)
#terminology is a bit unusual here: The host is the system on which
#gforth will run; the system on which configure will run is the `build'
case "$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 $arm_cacheflush; then
case "$host_os" in
*linux*)
AC_LIBOBJ(../arch/arm/cacheflush-linux)
;;
*)
no_dynamic_default=1
AC_LIBOBJ(../arch/arm/cacheflush0)
AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
;;
esac
else
AC_LIBOBJ(../$arm_cacheflush)
test $srcdir = . || AC_MSG_WARN([setting arm_cacheflush requires building in the source directory])
fi
#longer skipcodes lead to problems on ARM, and it uses
#only 4-byte alignment anyway
test "$skipcode" || skipcode="nop"
;;
hppa*)
machine=hppa
AC_LIBOBJ(../arch/hppa/cache)
#-N needed for --dynamic <M4U3b.3790$9d.317@news.cpqcorp.net>
LDFLAGS="$LDFLAGS -Xlinker -N"
LIBS="$LIBS -L/lib/pa1.1/"
;;
sparc*)
machine=sparc
;;
i386)
machine=386
CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr"
;;
i486)
machine=386
CFLAGS="$CFLAGS -fomit-frame-pointer -fforce-addr -m486"
;;
i*86)
machine=386
CFLAGS="$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 "$host_os" = "nextstep3"
then
AC_LIBOBJ(termios)
fi
;;
mips*)
machine=mips
#dynamic native code has the following problems on MIPS:
#
#1) J/JAL seems relocatable, but is are only
#relocatable within a 256MB-segment. While we try to
#get the linker to arrange this, there is no guarantee
#that this will succeed (and if the user uses a lot of
#memory, it is likely to fail).
#
#2) The way we generate dynamic native code may
#violate MIPS architectural restrictions (in
#particular, the delay slots of LW, MFLO, etc.)
#
#Therefore we disable dynamic native code by default:
if test -z "$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="$CFLAGS -mieee"
;;
power*|rs6000)
machine=power
AC_CHECK_FUNC(_sync_cache_range,[true],[AC_LIBOBJ(../arch/power/_sync_cache_range)])
#long long is broken on (at least) gcc-2.95.* for PPC
test x$ac_cv_sizeof_long_long = x &&
($CC -v 2>&1 |grep 'gcc version 2.95' >/dev/null) &&
ac_cv_sizeof_long_long=0
#The only architecture with enough callee-saved registers
test x$STACK_CACHE_REGS = x && STACK_CACHE_REGS=3
#or use 2, hardly slower at run-time and starts up faster
#the skipcode that is normally selected below does not
#work with gcc-3.[34]
test "$skipcode" || skipcode="nop\nnop\nnop\nnop"
;;
*)
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 $no_dynamic_default; then
no_dynamic_default=1
AC_MSG_WARN([No I-cache flush code known, disabling dynamic native code generation])
fi
esac
AC_SUBST(host)
MAKEINC=""
GFORTH_EXE="true"
echo "Check for arch/$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/$platform/make.inc"
GFORTH_EXE="\$(MAKE) -f arch/$machine/$platform/make.inc \$@.exe"
fi
fi
AC_SUBST(MAKEINC)
AC_ARG_VAR(STACK_CACHE_REGS, [number of registers in the maximum stack cache state for gforth-fast and gforth-native (default platform-dependent).])
test x$STACK_CACHE_REGS = x && STACK_CACHE_REGS=1
AC_DEFINE_UNQUOTED(STACK_CACHE_REGS, $STACK_CACHE_REGS,
[number of registers in the maximum stack cache state for gforth-fast and gforth-native])
test x$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, $GCC_PR15242_WORKAROUND,
[force (1) or forbid (0) use of a workaround for a gcc performance bug])
dnl the following macro produces a warning with autoconf-2.1
AC_CHECK_SIZEOF(char *)
case "$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"
;;
$ac_cv_sizeof_intptr_t)
ac_cv_int_type_cell="intptr_t"
;;
esac
AC_MSG_RESULT($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"
;;
$ac_cv_sizeof_intptr_t)
ac_cv_wyde_type_cell="intptr_t"
;;
esac
AC_MSG_RESULT($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"
;;
$ac_cv_sizeof_intptr_t)
ac_cv_tetrabyte_type_cell="intptr_t"
;;
esac
AC_MSG_RESULT($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 octabytes])
ac_cv_octabyte_type_cell=none
case 8 in
$ac_cv_sizeof_int)
ac_cv_octabyte_type_cell=int
;;
$ac_cv_sizeof_short)
ac_cv_octabyte_type_cell=short
;;
$ac_cv_sizeof_char)
ac_cv_octabyte_type_cell=char
;;
$ac_cv_sizeof_long)
ac_cv_octabyte_type_cell=long
;;
$ac_cv_sizeof_long_long)
ac_cv_octabyte_type_cell="long long"
;;
$ac_cv_sizeof_intptr_t)
ac_cv_octabyte_type_cell="intptr_t"
;;
esac
AC_MSG_RESULT($ac_cv_octabyte_type_cell)
AC_DEFINE_UNQUOTED(OCTABYTE_TYPE,$ac_cv_octabyte_type_cell,[an integer type that is 8 bytes long])
AC_MSG_CHECKING([for a C type for double-cells])
ac_cv_int_type_double_cell=none
case `expr 2 '*' "$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_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])
OPTS=-ll
else
if test "$ac_cv_sizeof_char_p" = 8; then
OPTS="-ll -noll"
else
OPTS=-noll
fi
fi
if grep FORCE_REG $srcdir/arch/$machine/machine.h >/dev/null; then
OPTS2=''
for i in $OPTS; do OPTS2="$OPTS2 $i-reg"; done
OPTS="$OPTS2 $OPTS"
else
AC_DEFINE_UNQUOTED(FORCE_REG_UNNECESSARY,,[defined if the platform does not need FORCE_REG])
fi
AC_SUBST(OPTS)
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)
if test -z "$LIBTOOL_CC"
then
LIBTOOL_CC="$CC"
# Try if GCC understands -Wimplicit-function-declaration
AC_MSG_CHECKING([if $CC understands -Wimplicit-function-declaration])
CFLAGS_1="$CFLAGS"
CFLAGS="$CFLAGS -Wimplicit-function-declaration"
AC_TRY_COMPILE(,,LIBTOOL_CC="$CC -Wimplicit-function-declaration",)
CFLAGS="$CFLAGS_1"
AC_MSG_RESULT($ac_align_jumps)
fi
AC_SUBST(LIBTOOL_CC)
# 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_MSG_RESULT($M4)
# Find installed Gforth
AC_MSG_CHECKING([for gforth])
GFORTH="`cd / && which gforth 2>/dev/null`"
#the "$srcdir" = "." test defends agains the "../" bug in gforth-0.6.2
(cd / && $GFORTH -e bye >/dev/null 2>/dev/null && test "$srcdir" = ".") || GFORTH=""
if test -z "$GFORTH"; then
PREFORTH='echo "You need to configure with a gforth in \$PATH to build this part" && false'
kernel_anti_dependence=''
else
PREFORTH="$GFORTH -i `cd / && $GFORTH --debug -e bye 2>&1 |grep "Opened image file: "|sed 's/Opened image file: //'`" ;
kernel_anti_dependence='$(kernel_fi)'
fi
AC_SUBST(PREFORTH)
AC_SUBST(kernel_anti_dependence)
AC_MSG_RESULT($PREFORTH)
#echo "machine='$machine'"
dnl AC_CHECK_PROG(asm_fs,asm.fs,arch/$machine/asm.fs,,$srcdir/arch/$machine)
if test x$EC_MODE = xfalse
then
AS_IF([test -f $srcdir/arch/$machine/asm.fs],
[asm_fs=arch/$machine/asm.fs])
fi
AC_SUBST(asm_fs)
dnl AC_CHECK_PROG(disasm_fs,disasm.fs,arch/$machine/disasm.fs,,$srcdir/arch/$machine)
if test x$EC_MODE = xfalse
then
AS_IF([test -f $srcdir/arch/$machine/disasm.fs],
[disasm_fs=arch/$machine/disasm.fs])
fi
AC_SUBST(disasm_fs)
AC_PATH_PROG(INSTALL_INFO,install-info,[echo '>>>>Please make info dir entry:'],$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=""
#the following magic value was suggested by
#http://mail.python.org/pipermail/pythonmac-sig/2005-October/015190.html
AC_DEFINE_UNQUOTED(MACOSX_DEPLOYMENT_TARGET,"10.3",[an environment variable value needed by libtool on some MacOS X versions])
;;
*linux*)
DIRSEP="/"
PATHSEP=":"
DEFAULTSYSTEMPREFIX=""
if test -z "$LTDL_LIBRARY_PATH" -a "$wordsize" = 64; then
LTDL_LIBRARY_PATH=`/sbin/ldconfig -p |tail -n +2 |sed 's/^.* => //'|sed 's|/[[^/]]*$||'| grep 64 | sort -u | tr '\n' : | sed -e 's/:$//'`
fi
;;
*)
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,"$DEFAULTSYSTEMPREFIX",[default for environment variable GFORTHSYSTEMPREFIX])
if test -n "$LTDL_LIBRARY_PATH"; then
AC_DEFINE_UNQUOTED(LTDL_LIBRARY_PATH,"$LTDL_LIBRARY_PATH",[Define LTDL_LIBRARY_PATH for 64 bit Linux])
fi
#work around SELinux brain damage (from Andrew Haley <12t8f3jakb74g2c@news.supernews.com>)
#This magic incantation seems to be completely undocumented.
AC_CHECK_PROG([MASSAGE_EXE],[chcon],[chcon -t unconfined_execmem_exec_t],[true])
dnl Now a little support for DOS/DJGCC
GFORTHFAST_EXE="$GFORTH_EXE"
GFORTHITC_EXE="$GFORTH_EXE"
GFORTHDITC_EXE="$GFORTH_EXE"
AC_SUBST(GFORTH_EXE)
AC_SUBST(GFORTHFAST_EXE)
AC_SUBST(GFORTHITC_EXE)
AC_SUBST(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_KERNL)
LINK_KERNL=""
#if test $host_os=dos
#then
# echo Configuring for DOS!!!
# MAKE_EXE="coff2exe gforth"
# LINK_KERNL='$(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 $ac_cv_c_bigendian != no; then
bytesex=b
KERNEL="kernl16b.fi kernl16l.fi kernl32b.fi kernl32l.fi kernl64b.fi kernl64l.fi"
else
bytesex=l
KERNEL="kernl16l.fi kernl16b.fi kernl32l.fi kernl32b.fi kernl64l.fi kernl64b.fi"
fi
#check how to do asm(".skip 16")
#echo "CFLAGS=$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,$no_dynamic_default,default value for no_dynamic)
dnl Checks for programs.
AC_PROG_LN_S
AC_PROG_INSTALL
AC_CHECK_PROGS(TEXI2DVI,texi2dvi4a2ps texi2dvi)
dnl MacOS X has a libtool that does something else
AC_CHECK_PROGS(GNU_LIBTOOL,"glibtool --tag=CC" libtool)
dnl Checks for library functions
dnl This check is just for making later checks link with libm.
dnl using sin here is no good idea since it is built-into gcc and typechecked
AC_CHECK_LIB(m,asin)
AC_CHECK_LIB(ltdl,lt_dlinit)
if test -n "$GNU_LIBTOOL" -a $ac_cv_lib_ltdl_lt_dlinit = yes; then
build_libcc_named=build-libcc-named
else
build_libcc_named=""
AC_MSG_WARN([No GNU_LIBTOOL found, skip pre-building libcc-based libraries])
fi
AC_SUBST(build_libcc_named)
if test -z "$GNU_LIBTOOL"; then
AC_MSG_WARN([No GNU_LIBTOOL found, using "libtool" as name.])
AC_MSG_WARN([libcc.fs won't work until you have installed (GNU) libtool.])
GNU_LIBTOOL=libtool
fi
#check for libffi 2.x
AC_CHECK_HEADER(ffi.h,FFI_H_NAME=ffi.h,)
if test -z "$FFI_H_NAME"; then
AC_CHECK_HEADER(ffi/ffi.h,FFI_H_NAME=ffi/ffi.h,)
fi
AC_SUBST(FFI_H_NAME)
AC_CHECK_LIB(ffi,ffi_call)
if test -n "$FFI_H_NAME" -a $ac_cv_lib_ffi_ffi_call = yes
then
LIBFFIFLAG="true"
LIBCC_BUILD_SRC="$LIBCC_BUILD_SRC libffi.fs"
else
LIBFFIFLAG="false"
fi
#check for ffcall libraries
#unfortunately, these four calls are separated out into a library each.
AC_CHECK_LIB(avcall,__builtin_avcall)
dnl AC_CHECK_LIB(callback,__vacall_r)
dnl AC_CHECK_LIB(vacall,vacall)
dnl AC_CHECK_LIB(trampoline,alloc_trampoline)
if test $ac_cv_lib_avcall___builtin_avcall = yes; then
FFCALLFLAG="true"
LIBCC_BUILD_SRC="$LIBCC_BUILD_SRC fflib.fs"
else
FFCALLFLAG="false"
fi
if test $LIBFFIFLAG = false -a $FFCALLFLAG = false; then
AC_MSG_WARN([The (old) lib.fs foreign function interface needs either libffi or the ffcall libraries])
fi
AC_SUBST(LIBFFIFLAG)
AC_SUBST(FFCALLFLAG)
AC_SUBST(LIBCC_BUILD_SRC)
if test "$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 <signal.h>])
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 alloca.h wchar.h endian.h)
AC_FUNC_FNMATCH
test $ac_cv_func_fnmatch_works = yes || AC_LIBOBJ(fnmatch)
AC_CHECK_FUNCS(mmap sysconf getpagesize wcwidth)
AM_PATH_LISPDIR
kernel_fi=kernl${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
AC_SUBST(machine)
AC_CONFIG_FILES([
Makefile
Makedist
gforthmi
vmgen
machpc.fs
envos.fs
preforth
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
chmod +x preforth
test -d kernel||mkdir kernel
if test $srcdir != "."; then ln -sf $srcdir/gforth.el .; fi
$srcdir/mkinstalldirs include/gforth/$PACKAGE_VERSION
$srcdir/mkinstalldirs arch/$machine
ln -sf ../../../engine/config.h ../../../engine/libcc.h include/gforth/$PACKAGE_VERSION]],
[PACKAGE_VERSION=$PACKAGE_VERSION
machine=$machine])
AC_OUTPUT
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