cpython/configure.in
Guido van Rossum 3d15bd8806 Adapted version of Eric Raymond's patches to automatically configure
curses and readline (for Linux, at least).

These are done as shared libraries by default, and so is bsddb -- that
seems to make the most sense.
2001-01-10 18:53:48 +00:00

1352 lines
36 KiB
Plaintext

dnl Process this file with autoconf 2.0 or later to make a configure script.
AC_REVISION($Revision$)
AC_PREREQ(2.0)
AC_INIT(Include/object.h)
AC_CONFIG_HEADER(config.h)
# Set VERSION so we only need to edit in one place (i.e., here)
AC_SUBST(VERSION)
VERSION=2.0
# NEXTSTEP|MacOSX|Darwin stuff
if test -f /usr/lib/NextStep/software_version -o -f /System/Library/CoreServices/software_version ; then
AC_MSG_CHECKING(for --with-next-archs)
AC_ARG_WITH(next-archs,
[ --with-next-archs='arch1 arch2 ..' build MAB binary], [
if test -n "$withval"; then
ac_arch_flags=`/usr/lib/arch_tool -archify_list $withval`
# GCC does not currently support multi archs on the NeXT
with_gcc=no
fi
AC_MSG_RESULT($with_next_archs)
], [AC_MSG_RESULT(none: using `arch`)])
if test -z "$MACHDEP"
then
ac_sys_system=`uname -s`
if test "$ac_sys_system" = "Darwin" ; then
ac_sys_release=`uname -r`
else
set X `hostinfo | egrep '(NeXT Mach|Kernel Release).*:' | \
sed -e 's/://' -e 's/\./_/'` && \
ac_sys_system=next && ac_sys_release=$4
fi
MACHDEP="$ac_sys_system$ac_sys_release"
fi
fi
AC_ARG_WITH(next-framework,
[ --with-next-framework Build (OpenStep|Rhapsody|MacOSX|Darwin) framework],,)
AC_ARG_WITH(dyld,
[ --with-dyld Use (OpenStep|Rhapsody|MacOSX|Darwin) dynamic linker],,)
# Set name for machine-dependent library files
AC_SUBST(MACHDEP)
AC_MSG_CHECKING(MACHDEP)
if test -z "$MACHDEP"
then
ac_sys_system=`uname -s`
if test "$ac_sys_system" = "AIX" -o "$ac_sys_system" = "Monterey64"; then
ac_sys_release=`uname -v`
else
ac_sys_release=`uname -r`
fi
ac_md_system=`echo $ac_sys_system |
tr -d '[/ ]' | tr '[[A-Z]]' '[[a-z]]'`
ac_md_release=`echo $ac_sys_release |
tr -d '[/ ]' | sed 's/\..*//'`
MACHDEP="$ac_md_system$ac_md_release"
case $MACHDEP in
'') MACHDEP="unknown";;
esac
fi
#
# SGI compilers allow the specification of the both the ABI and the
# ISA on the command line. Depending on the values of these switches,
# different and often incompatable code will be generated.
#
# The SGI_ABI variable can be used to modify the CC and LDFLAGS and
# thus supply support for various ABI/ISA combinations. The MACHDEP
# variable is also adjusted.
#
AC_SUBST(SGI_ABI)
if test ! -z "$SGI_ABI"
then
CC="cc $SGI_ABI"
LDFLAGS="$SGI_ABI $LDFLAGS"
MACHDEP=`echo "${MACHDEP}${SGI_ABI}" | sed 's/ *//g'`
fi
AC_MSG_RESULT($MACHDEP)
#
# CCC is the command that compiles C++ programs
#
# Not all make programs have this predefined.
#
#AC_SUBST(SET_CCC)
#AC_MSG_CHECKING(CCC)
#if test -z "$CCC"
#then
# case $ac_sys_system in
# IRIX*) SET_CCC="CCC= CC ${SGI_ABI}";;
# Linux*) SET_CCC="CCC= g++";;
# *) SET_CCC=""
# esac
#else
# SET_CCC="CCC= ${CCC}"
#fi
#AC_MSG_RESULT($SET_CCC)
# checks for alternative programs
AC_MSG_CHECKING(for --without-gcc)
AC_ARG_WITH(gcc, [ --without-gcc never use gcc], [
case $withval in
no) CC=cc
without_gcc=yes;;
yes) CC=gcc
without_gcc=no;;
*) CC=$withval
without_gcc=$withval;;
esac], [
case $ac_sys_system in
OSF1) CC=cc
without_gcc=;;
BeOS*)
case $BE_HOST_CPU in
ppc)
CC=mwcc
without_gcc=yes
OPT="-O -D'DL_EXPORT(RTYPE)=__declspec(dllexport) RTYPE' -D'DL_IMPORT(RTYPE)=__declspec(dllexport) RTYPE' -export pragma"
CCSHARED="UDL_IMPORT -D'DL_IMPORT(RTYPE)=__declspec(dllimport) RTYPE'"
LDFLAGS="$LDFLAGS -nodup"
AR="$PWD/BeOS/ar-fake"
RANLIB=:
;;
x86)
CC=gcc
without_gcc=no
OPT=-O
# Really should use srcdir instead of PWD
AR="$PWD/BeOS/ar-fake"
RANLIB=:
;;
*)
AC_ERROR(Unknown BeOS platform \"$BE_HOST_CPU\")
;;
esac
;;
Monterey*)
RANLIB=:
without_gcc=;;
*) without_gcc=no;;
esac])
AC_MSG_RESULT($without_gcc)
AC_SUBST(SET_CXX)
AC_SUBST(MAINOBJ)
MAINOBJ=python.o
AC_MSG_CHECKING(for --with-cxx=<compiler>)
AC_ARG_WITH(cxx, [ --with-cxx=<compiler> enable C++ support],[
check_cxx=no
case $withval in
no) CXX=
with_cxx=no;;
*) CXX=$withval
MAINOBJ=ccpython.o
with_cxx=$withval;;
esac], [
with_cxx=no
check_cxx=yes
])
AC_MSG_RESULT($with_cxx)
dnl The following fragment works similar to AC_PROG_CXX.
dnl It does not fail if CXX is not found, and it is not executed if
dnl --with-cxx was given.
dnl Finally, it does not test whether CXX is g++.
if test "$check_cxx" = "yes"
then
AC_CHECK_PROGS(CXX, $CCC c++ g++ gcc CC cxx cc++ cl, notfound)
if test "$CXX" = "notfound"
then
CXX=
else
AC_PROG_CXX_WORKS
fi
fi
SET_CXX="CXX=$CXX"
#AC_MSG_CHECKING(CCC)
#if test -z "$CCC"
#then
# case $ac_sys_system in
# IRIX*) SET_CCC="CCC= CC ${SGI_ABI}";;
# Linux*) SET_CCC="CCC= g++";;
# *) SET_CCC=""
# esac
#else
# SET_CCC="CCC= ${CCC}"
#fi
#AC_MSG_RESULT($SET_CCC)
# If the user switches compilers, we can't believe the cache
if test ! -z "$ac_cv_prog_CC" -a ! -z "$CC" -a "$CC" != "$ac_cv_prog_CC"
then
AC_ERROR(cached CC is different -- throw away $cache_file
(it is also a good idea to do 'make clean' before compiling))
fi
AC_PROG_CC
AC_SUBST(EXE)
AC_MSG_CHECKING(for --with-suffix)
AC_ARG_WITH(suffix, [ --with-suffix=.exe set executable suffix],[
case $withval in
no) EXE=;;
yes) EXE=.exe;;
*) EXE=$withval;;
esac])
AC_MSG_RESULT($EXE)
case $MACHDEP in
bsdos*)
case $CC in
gcc) CC="$CC -D_HAVE_BSDI";;
esac;;
esac
case $ac_sys_system in
hp*|HP*)
case $CC in
cc|*/cc) CC="$CC -Ae";;
esac;;
Monterey*)
case $CC in
cc) CC="$CC -Wl,-Bexport";;
esac;;
esac
# LDLIBRARY is the name of the library to link against (as opposed to the
# name of the library into which to insert object files). On systems
# without shared libraries, LDLIBRARY is the same as LIBRARY (defined in
# the Makefiles).
AC_SUBST(MAKE_LDLIBRARY)
AC_SUBST(LDLIBRARY)
LDLIBRARY=''
# LINKCC is the command that links the python executable -- default is $(CC).
# This is altered for AIX in order to build the export list before
# linking.
AC_SUBST(LINKCC)
AC_MSG_CHECKING(LINKCC)
if test -z "$LINKCC" -a ! -z "$CXX"
then
LINKCC="$CXX"
fi
if test -z "$LINKCC"
then
case $ac_sys_system in
AIX*)
LINKCC="\$(srcdir)/makexp_aix python.exp \"\" \$(LIBRARY); \$(PURIFY) \$(CC)";;
dgux*)
LINKCC="LD_RUN_PATH=$libdir \$(PURIFY) \$(CC)";;
Monterey64*)
LINKCC="\$(PURIFY) \$(CC) -L/usr/lib/ia64l64";;
*) LINKCC="\$(PURIFY) \$(CC)";;
esac
fi
AC_MSG_RESULT($LINKCC)
AC_MSG_CHECKING(LDLIBRARY)
# NeXT framework builds require that the 'ar' library be converted into
# a bundle using libtool.
if test "$with_next_framework"
then
LDLIBRARY='libpython$(VERSION).dylib'
fi
# DG/UX requires some fancy ld contortions to produce a .so from an .a
case $MACHDEP in
dguxR4)
LDLIBRARY='libpython$(VERSION).so'
OPT="$OPT -pic"
;;
beos*)
LDLIBRARY='libpython$(VERSION).so'
;;
esac
AC_MSG_RESULT($LDLIBRARY)
# If LDLIBRARY is different from LIBRARY, emit a rule to build it.
if test -z "$LDLIBRARY"
then
LDLIBRARY='libpython$(VERSION).a'
MAKE_LDLIBRARY="true"
else
MAKE_LDLIBRARY='$(MAKE) $(LDLIBRARY)'
fi
AC_PROG_RANLIB
AC_SUBST(AR)
AC_CHECK_PROGS(AR, ar aal, ar)
AC_SUBST(INSTALL)
AC_SUBST(INSTALL_PROGRAM)
AC_SUBST(INSTALL_DATA)
# Install just never works :-(
if test -z "$INSTALL"
then
INSTALL=cp
INSTALL_PROGRAM=cp
INSTALL_DATA=cp
else
INSTALL_PROGRAM="$INSTALL"
INSTALL_DATA="$INSTALL -m 644"
fi
# Not every filesystem supports hard links
AC_SUBST(LN)
if test -z "$LN" ; then
case $ac_sys_system in
BeOS*) LN="ln -s";;
*) LN=ln;;
esac
fi
# Optimizer/debugger flags passed between Makefiles
AC_SUBST(OPT)
if test -z "$OPT"
then
case $GCC in
yes)
case $ac_cv_prog_cc_g in
yes) OPT="-g -O2 -Wall -Wstrict-prototypes -fPIC";;
*) OPT="-O2 -Wall -Wstrict-prototypes -fPIC";;
esac
;;
*) OPT="-O";;
esac
fi
# The current (beta) Monterey compiler dies with optimizations
case $ac_sys_system in
Monterey*) OPT="";;
esac
if test "$ac_arch_flags"
then
OPT="$OPT $ac_arch_flags"
fi
# checks for UNIX variants that set C preprocessor variables
AC_AIX
AC_MINIX
AC_MSG_CHECKING(whether $CC accepts -OPT:Olimit=0)
AC_CACHE_VAL(ac_cv_opt_olimit_ok,
[ac_save_cc="$CC"
CC="$CC -OPT:Olimit=0"
AC_TRY_RUN([int main() { return 0; }],
ac_cv_opt_olimit_ok=yes,
ac_cv_opt_olimit_ok=no)
CC="$ac_save_cc"])
AC_MSG_RESULT($ac_cv_opt_olimit_ok)
if test $ac_cv_opt_olimit_ok = yes; then
case $ac_sys_system in
Darwin*) OPT="$OPT" ;;
*) OPT="$OPT -OPT:Olimit=0";;
esac
else
AC_MSG_CHECKING(whether $CC accepts -Olimit 1500)
AC_CACHE_VAL(ac_cv_olimit_ok,
[ac_save_cc="$CC"
CC="$CC -Olimit 1500"
AC_TRY_RUN([int main() { return 0; }],
ac_cv_olimit_ok=yes,
ac_cv_olimit_ok=no)
CC="$ac_save_cc"])
AC_MSG_RESULT($ac_cv_olimit_ok)
if test $ac_cv_olimit_ok = yes; then
OPT="$OPT -Olimit 1500"
fi
fi
dnl # check for ANSI or K&R ("traditional") preprocessor
dnl AC_MSG_CHECKING(for C preprocessor type)
dnl AC_TRY_COMPILE([
dnl #define spam(name, doc) {#name, &name, #name "() -- " doc}
dnl int foo;
dnl struct {char *name; int *addr; char *doc;} desc = spam(foo, "something");
dnl ], [;], cpp_type=ansi, AC_DEFINE(HAVE_OLD_CPP) cpp_type=traditional)
dnl AC_MSG_RESULT($cpp_type)
# checks for header files
AC_HEADER_STDC
AC_CHECK_HEADERS(dlfcn.h fcntl.h limits.h locale.h ncurses.h poll.h pthread.h \
signal.h stdarg.h stddef.h stdlib.h thread.h unistd.h utime.h \
sys/audioio.h sys/file.h sys/lock.h db_185.h db.h \
sys/param.h sys/select.h sys/socket.h sys/time.h sys/times.h \
sys/un.h sys/utsname.h sys/wait.h pty.h libutil.h \
ndbm.h db1/ndbm.h gdbm/ndbm.h)
AC_HEADER_DIRENT
# checks for typedefs
was_it_defined=no
AC_MSG_CHECKING(for clock_t in time.h)
AC_EGREP_HEADER(clock_t, time.h, was_it_defined=yes, AC_DEFINE(clock_t, long))
AC_MSG_RESULT($was_it_defined)
# Add some code to confdefs.h so that the test for off_t works on SCO
cat >> confdefs.h <<\EOF
#if defined(SCO_DS)
#undef _OFF_T
#endif
EOF
# Type availability checks
AC_TYPE_MODE_T
AC_TYPE_OFF_T
AC_TYPE_PID_T
AC_TYPE_SIGNAL
AC_TYPE_SIZE_T
AC_TYPE_UID_T
# Sizes of various common basic types
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(long)
AC_CHECK_SIZEOF(void *)
AC_CHECK_SIZEOF(char)
AC_CHECK_SIZEOF(short)
AC_CHECK_SIZEOF(float)
AC_CHECK_SIZEOF(double)
AC_CHECK_SIZEOF(fpos_t)
AC_MSG_CHECKING(for long long support)
have_long_long=no
AC_TRY_COMPILE([], [long long x; x = (long long)0;], AC_DEFINE(HAVE_LONG_LONG) have_long_long=yes)
AC_MSG_RESULT($have_long_long)
if test "$have_long_long" = yes ; then
AC_CHECK_SIZEOF(long long)
fi
AC_MSG_CHECKING(for uintptr_t support)
have_uintptr_t=no
AC_TRY_COMPILE([], [uintptr_t x; x = (uintptr_t)0;], AC_DEFINE(HAVE_UINTPTR_T) have_uintptr_t=yes)
AC_MSG_RESULT($have_uintptr_t)
if test "$have_uintptr_t" = yes ; then
AC_CHECK_SIZEOF(uintptr_t)
fi
# Hmph. AC_CHECK_SIZEOF() doesn't include <sys/types.h>.
AC_MSG_CHECKING(size of off_t)
AC_CACHE_VAL(ac_cv_sizeof_off_t,
[AC_TRY_RUN([#include <stdio.h>
#include <sys/types.h>
main()
{
FILE *f=fopen("conftestval", "w");
if (!f) exit(1);
fprintf(f, "%d\n", sizeof(off_t));
exit(0);
}], ac_cv_sizeof_off_t=`cat conftestval`, ac_cv_sizeof_off_t=0)
])
AC_MSG_RESULT($ac_cv_sizeof_off_t)
AC_DEFINE_UNQUOTED(SIZEOF_OFF_T, $ac_cv_sizeof_off_t)
AC_MSG_CHECKING(whether to enable large file support)
if test "$have_long_long" = yes -a \
"$ac_cv_sizeof_off_t" -gt "$ac_cv_sizeof_long" -a \
"$ac_cv_sizeof_long_long" -ge "$ac_cv_sizeof_off_t"; then
AC_DEFINE(HAVE_LARGEFILE_SUPPORT)
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(no)
fi
# AC_CHECK_SIZEOF() doesn't include <time.h>.
AC_MSG_CHECKING(size of time_t)
AC_CACHE_VAL(ac_cv_sizeof_time_t,
[AC_TRY_RUN([#include <stdio.h>
#include <time.h>
main()
{
FILE *f=fopen("conftestval", "w");
if (!f) exit(1);
fprintf(f, "%d\n", sizeof(time_t));
exit(0);
}], ac_cv_sizeof_time_t=`cat conftestval`, ac_cv_sizeof_time_t=0)
])
AC_MSG_RESULT($ac_cv_sizeof_time_t)
AC_DEFINE_UNQUOTED(SIZEOF_TIME_T, $ac_cv_sizeof_time_t)
# if have pthread_t then define SIZEOF_PTHREAD_T
AC_MSG_CHECKING(for pthread_t)
have_pthread_t=no
AC_TRY_COMPILE([#include <pthread.h>], [pthread_t x; x = *(pthread_t*)0;], have_pthread_t=yes)
AC_MSG_RESULT($have_pthread_t)
if test "$have_pthread_t" = yes ; then
# AC_CHECK_SIZEOF() doesn't include <pthread.h>.
AC_MSG_CHECKING(size of pthread_t)
AC_CACHE_VAL(ac_cv_sizeof_pthread_t,
[AC_TRY_RUN([#include <stdio.h>
#include <pthread.h>
main()
{
FILE *f=fopen("conftestval", "w");
if (!f) exit(1);
fprintf(f, "%d\n", sizeof(pthread_t));
exit(0);
}], ac_cv_sizeof_pthread_t=`cat conftestval`, ac_cv_sizeof_pthread_t=0)
])
AC_MSG_RESULT($ac_cv_sizeof_pthread_t)
AC_DEFINE_UNQUOTED(SIZEOF_PTHREAD_T, $ac_cv_sizeof_pthread_t)
fi
# Minor variations in building a framework between NextStep versions 4 and 5
AC_SUBST(LIBTOOL_CRUFT)
case $ac_sys_system/$ac_sys_release in
Darwin/*)
ns_undef_sym='_environ'
LIBTOOL_CRUFT="-lcc_dynamic -arch_only ppc -U $ns_undef_sym" ;;
next/4*)
ns_undef_sym='__environ'
LIBTOOL_CRUFT="-U $ns_undef_sym" ;;
next/5*)
ns_undef_sym='_environ'
LIBTOOL_CRUFT="-lcc_dynamic -U $ns_undef_sym" ;;
esac
AC_MSG_CHECKING(for --with-next-framework)
if test "$with_next_framework"
then
OPT="$OPT -fno-common"
# -U __environ is needed since bundles don't have access
# to crt0 when built but will always be linked against it
LDFLAGS="$LDFLAGS -Wl,-U,$ns_undef_sym"
AC_DEFINE(WITH_NEXT_FRAMEWORK)
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(no)
fi
AC_MSG_CHECKING(for --with-dyld)
if test "$with_next_framework" -o "$with_dyld"
then
if test "$with_dyld"
then
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(required for framework build)
fi
AC_DEFINE(WITH_DYLD)
ns_dyld='set'
else
AC_MSG_RESULT(no)
fi
# Set info about shared libraries.
AC_SUBST(SO)
AC_SUBST(LDSHARED)
AC_SUBST(CCSHARED)
AC_SUBST(LINKFORSHARED)
# SO is the extension of shared libraries `(including the dot!)
# -- usually .so, .sl on HP-UX
AC_MSG_CHECKING(SO)
if test -z "$SO"
then
case $ac_sys_system in
hp*|HP*) SO=.sl;;
*) SO=.so;;
esac
fi
AC_MSG_RESULT($SO)
# LDSHARED is the ld *command* used to create shared library
# -- "ld" on SunOS 4.x.x, "ld -G" on SunOS 5.x, "ld -shared" on IRIX 5
# (Shared libraries in this instance are shared modules to be loaded into
# Python, as opposed to building Python itself as a shared library.)
AC_MSG_CHECKING(LDSHARED)
if test -z "$LDSHARED"
then
case $ac_sys_system/$ac_sys_release in
AIX*) LDSHARED="\$(srcdir)/ld_so_aix \$(CC)";;
BeOS*) LDSHARED="\$(srcdir)/../BeOS/linkmodule -L.. -lpython\$(VERSION)";;
IRIX/5*) LDSHARED="ld -shared";;
IRIX*/6*) LDSHARED="ld ${SGI_ABI} -shared -all";;
SunOS/4*) LDSHARED="ld";;
SunOS/5*)
if test "$GCC" = "yes"
then LDSHARED='$(CC) -shared'
else LDSHARED="ld -G";
fi ;;
hp*|HP*) LDSHARED="ld -b";;
OSF*) LDSHARED="ld -shared -expect_unresolved \"*\"";;
DYNIX/ptx*) LDSHARED="ld -G";;
Darwin/*|next/*)
if test "$ns_dyld"
then
if test "$ac_sys_system" = Darwin
then LDSHARED='$(CC) $(LDFLAGS) -bundle -undefined suppress'
else LDSHARED='$(CC) $(LDFLAGS) -bundle -prebind'
fi
else LDSHARED='$(CC) $(CFLAGS) -nostdlib -r';
fi
if test "$with_next_framework" ; then
LDSHARED="$LDSHARED \$(LDLIBRARY)"
fi ;;
Linux*) LDSHARED="gcc -shared";;
dgux*) LDSHARED="ld -G";;
BSD/OS*/4*) LDSHARED="gcc -shared";;
OpenBSD*) LDSHARED="ld -Bshareable";;
NetBSD*)
if [[ "`$CC -dM -E - </dev/null | grep __ELF__`" != "" ]]
then
LDSHARED="cc -shared"
else
LDSHARED="ld -Bshareable"
fi;;
FreeBSD*)
if [[ "`$CC -dM -E - </dev/null | grep __ELF__`" != "" ]]
then
LDSHARED="cc -shared ${LDFLAGS}"
else
LDSHARED="ld -Bshareable ${LDFLAGS}"
fi;;
SCO_SV*) LDSHARED="cc -G -KPIC -Ki486 -belf -Wl,-Bexport";;
Monterey*) LDSHARED="cc -G -dy -Bdynamic -Bexport -L/usr/lib/ia64l64";;
*) LDSHARED="ld";;
esac
fi
AC_MSG_RESULT($LDSHARED)
# CCSHARED are the C *flags* used to create objects to go into a shared
# library (module) -- this is only needed for a few systems
AC_MSG_CHECKING(CCSHARED)
if test -z "$CCSHARED"
then
case $ac_sys_system/$ac_sys_release in
hp*|HP*) if test "$GCC" = yes;
then CCSHARED="-fpic";
else CCSHARED="+z";
fi;;
Linux*) CCSHARED="-fpic";;
BSD/OS*/4*) CCSHARED="-fpic";;
OpenBSD*) CCSHARED="-fpic";;
FreeBSD*|NetBSD*) CCSHARED="-fPIC";;
SCO_SV*) CCSHARED="-KPIC -dy -Bdynamic";;
Monterey*) CCSHARED="-G";;
IRIX*/6*) case $CC in
*gcc*) CCSHARED="-shared";;
*) CCSHARED="";;
esac;;
esac
fi
AC_MSG_RESULT($CCSHARED)
# LINKFORSHARED are the flags passed to the $(CC) command that links
# the python executable -- this is only needed for a few systems
AC_MSG_CHECKING(LINKFORSHARED)
if test -z "$LINKFORSHARED"
then
case $ac_sys_system/$ac_sys_release in
AIX*) LINKFORSHARED='-Wl,-bE:python.exp -lld';;
hp*|HP*)
LINKFORSHARED="-Wl,-E -Wl,+s -Wl,+b\$(BINLIBDEST)/lib-dynload";;
BSD/OS/4*) LINKFORSHARED="-Xlinker -export-dynamic";;
Linux*) LINKFORSHARED="-Xlinker -export-dynamic";;
# -u libsys_s pulls in all symbols in libsys
next/2*|next/3*) LINKFORSHARED="-u libsys_s";;
# -u __dummy makes the linker aware of the objc runtime
# in System.framework; otherwise, __objcInit (referenced in
# crt1.o) gets erroneously defined as common, which breaks dynamic
# loading of any modules which reference it in System.framework
next/4*|next/5*) LINKFORSHARED="-u __dummy -framework System" ;;
Darwin/*) LINKFORSHARED="-framework System" ;;
SCO_SV*) LINKFORSHARED="-Bdynamic -dy -Wl,-Bexport";;
ReliantUNIX*) LINKFORSHARED="-W1 -Blargedynsym";;
FreeBSD*|NetBSD*)
if [[ "`$CC -dM -E - </dev/null | grep __ELF__`" != "" ]]
then
LINKFORSHARED="-Wl,--export-dynamic"
fi;;
SunOS/5*) case $CC in
*gcc*)
if $CC -Xlinker -V 2>&1 | grep BFD >/dev/null
then
LINKFORSHARED="-Xlinker --export-dynamic"
fi;;
esac;;
esac
fi
AC_MSG_RESULT($LINKFORSHARED)
# checks for libraries
AC_CHECK_LIB(dl, dlopen) # Dynamic linking for SunOS/Solaris and SYSV
AC_CHECK_LIB(dld, shl_load) # Dynamic linking for HP-UX
# Check for --with-pydebug
AC_MSG_CHECKING(for --with-pydebug)
AC_ARG_WITH(pydebug,
[ --with-pydebug build with Py_DEBUG defined], [
if test "$withval" != no
then AC_DEFINE(Py_DEBUG) AC_MSG_RESULT(yes)
else AC_MSG_RESULT(no)
fi],
[AC_MSG_RESULT(no)])
# checks for system dependent C++ extensions support
case "$ac_sys_system" in
AIX*) AC_MSG_CHECKING(for genuine AIX C++ extensions support)
AC_TRY_LINK([#include "/usr/lpp/xlC/include/load.h"],
[loadAndInit("", 0, "")],
[AC_DEFINE(AIX_GENUINE_CPLUSPLUS)
AC_MSG_RESULT(yes)],
[AC_MSG_RESULT(no)]);;
*) ;;
esac
# Most SVR4 platforms (e.g. Solaris) need -lsocket and -lnsl.
# However on SGI IRIX, these exist but are broken.
# BeOS' sockets are stashed in libnet.
case "$ac_sys_system" in
IRIX*) ;;
*)
AC_CHECK_LIB(nsl, t_open, [LIBS="-lnsl $LIBS"]) # SVR4
AC_CHECK_LIB(socket, socket, [LIBS="-lsocket $LIBS"], [], $LIBS) # SVR4 sockets
;;
esac
case "$ac_sys_system" in
BeOS*)
AC_CHECK_LIB(net, socket, [LIBS="-lnet $LIBS"], [], $LIBS) # BeOS
;;
esac
AC_MSG_CHECKING(for --with-libs)
AC_ARG_WITH(libs,
[ --with-libs='lib1 ...' link against additional libs], [
AC_MSG_RESULT($withval)
LIBS="$withval $LIBS"
], AC_MSG_RESULT(no))
# This is used to generate Setup.config
AC_SUBST(USE_NCURSES_MODULE)
AC_CHECK_LIB(ncurses, initscr,
[USE_NCURSES_MODULE=""],
[USE_NCURSES_MODULE="#"],
-ltermcap)
# This is used to generate Setup.config
AC_SUBST(USE_READLINE_MODULE)
AC_CHECK_LIB(readline, readline,
[USE_READLINE_MODULE=""],
[USE_READLINE_MODULE="#"],
-ltermcap)
# This is used to generate Setup.config
AC_SUBST(USE_THREAD_MODULE)
USE_THREAD_MODULE=""
AC_MSG_CHECKING(for --with-dec-threads)
AC_SUBST(LDLAST)
AC_ARG_WITH(dec-threads,
[ --with-dec-threads use DEC Alpha/OSF1 thread-safe libraries], [
AC_MSG_RESULT($withval)
LDLAST=-threads
if test "${with_thread+set}" != set; then
with_thread="$withval";
fi],
AC_MSG_RESULT(no))
AC_MSG_CHECKING(for --with-threads)
AC_ARG_WITH(threads,
[ --with(out)-threads[=DIRECTORY] disable/enable thread support])
# --with-thread is deprecated, but check for it anyway
AC_ARG_WITH(thread,
[ --with(out)-thread[=DIRECTORY] deprecated; use --with(out)-threads],[
with_threads=$with_thread])
if test -z "$with_threads"
then with_threads="yes"
fi
AC_MSG_RESULT($with_threads)
if test "$with_threads" = "no"
then
USE_THREAD_MODULE="#"
else
if test ! -z "$with_threads" -a -d "$with_threads"
then LDFLAGS="$LDFLAGS -L$with_threads"
fi
if test ! -z "$withval" -a -d "$withval"
then LDFLAGS="$LDFLAGS -L$withval"
fi
AC_DEFINE(_REENTRANT)
AC_CHECK_HEADER(mach/cthreads.h, [AC_DEFINE(WITH_THREAD)
AC_DEFINE(C_THREADS)
LIBOBJS="$LIBOBJS thread.o"],[
AC_MSG_CHECKING(for --with-pth)
AC_ARG_WITH(pth,
[ --with-pth use GNU pth threading libraries], [
AC_MSG_RESULT($withval)
AC_DEFINE(WITH_THREAD)
AC_DEFINE(HAVE_PTH)
LIBS="-lpth $LIBS"
LIBOBJS="$LIBOBJS thread.o"],[
AC_MSG_RESULT(no)
AC_CHECK_LIB(pthread, pthread_create, [AC_DEFINE(WITH_THREAD)
AC_DEFINE(_POSIX_THREADS)
LIBS="-lpthread $LIBS"
LIBOBJS="$LIBOBJS thread.o"],[
AC_CHECK_FUNC(pthread_detach, [AC_DEFINE(WITH_THREAD)
case $ac_sys_system in
Darwin*) ;;
*) AC_DEFINE(_POSIX_THREADS);;
esac
LIBOBJS="$LIBOBJS thread.o"],[
AC_CHECK_HEADER(kernel/OS.h, [AC_DEFINE(WITH_THREAD)
AC_DEFINE(BEOS_THREADS)
LIBOBJS="$LIBOBJS thread.o"],[
AC_CHECK_LIB(pthreads, pthread_create, [AC_DEFINE(WITH_THREAD)
AC_DEFINE(_POSIX_THREADS)
LIBS="$LIBS -lpthreads"
LIBOBJS="$LIBOBJS thread.o"], [
AC_CHECK_LIB(c_r, pthread_create, [AC_DEFINE(WITH_THREAD)
AC_DEFINE(_POSIX_THREADS)
LIBS="$LIBS -lc_r"
LIBOBJS="$LIBOBJS thread.o"], [
AC_CHECK_LIB(thread, __d6_pthread_create, [AC_DEFINE(WITH_THREAD)
AC_DEFINE(_POSIX_THREADS)
LIBS="$LIBS -lthread"
LIBOBJS="$LIBOBJS thread.o"], [
AC_CHECK_LIB(pthread, __pthread_create_system, [AC_DEFINE(WITH_THREAD)
AC_DEFINE(_POSIX_THREADS)
LIBS="$LIBS -lpthread"
LIBOBJS="$LIBOBJS thread.o"], [
AC_CHECK_LIB(cma, pthread_create, [AC_DEFINE(WITH_THREAD)
AC_DEFINE(_POSIX_THREADS)
LIBS="$LIBS -lcma"
LIBOBJS="$LIBOBJS thread.o"],[
USE_THREAD_MODULE="#"])
])])])])])])])])])
AC_CHECK_LIB(mpc, usconfig, [AC_DEFINE(WITH_THREAD)
LIBS="$LIBS -lmpc"
LIBOBJS="$LIBOBJS thread.o"
USE_THREAD_MODULE=""])
AC_CHECK_LIB(thread, thr_create, [AC_DEFINE(WITH_THREAD)
LIBS="$LIBS -lthread"
LIBOBJS="$LIBOBJS thread.o"
USE_THREAD_MODULE=""])
if test "$USE_THREAD_MODULE" != "#"
then
# If the above checks didn't disable threads, (at least) OSF1
# needs this '-threads' argument during linking.
case $ac_sys_system in
OSF1) LDLAST=-threads;;
esac
fi
fi
# Check for GC support
AC_SUBST(USE_GC_MODULE)
USE_GC_MODULE=""
AC_MSG_CHECKING(for --with-cycle-gc)
AC_ARG_WITH(cycle-gc,
[ --with(out)-cycle-gc disable/enable garbage collection])
if test -z "$with_cycle_gc"
then with_cycle_gc="yes"
fi
if test "$with_cycle_gc" = "no"
then
USE_GC_MODULE="#"
else
AC_DEFINE(WITH_CYCLE_GC)
fi
AC_MSG_RESULT($with_cycle_gc)
# Check for LIBDB support
# either --with-libdb or, in its absence, the presence of db.h
AC_SUBST(USE_BSDDB_MODULE)
USE_BSDDB_MODULE=""
AC_MSG_CHECKING(for --with-libdb)
AC_ARG_WITH(libdb,
[ --with(out)-libdb disable/enable bsddb module])
# enabled by default, but db.h must be found
if test "$ac_cv_header_db_h" = "yes"
then
if test "$with_libdb" != "no"
then with_libdb="yes"
fi
else
# make sure user knows why bsddb support wasn't enabled even
# though s/he requested it
if test "$with_libdb" = "yes"
then echo $ac_n "(requested, but db.h was not found) $ac_c"
fi
with_libdb="no"
fi
if test "$with_libdb" = "no"
then
USE_BSDDB_MODULE="#"
else
AC_DEFINE(WITH_LIBDB)
fi
AC_MSG_RESULT($with_libdb)
if test "$with_libdb" = "yes"
then
# check for libdb; BSD systems have the DB routines in libc --tg
AC_SUBST(HAVE_LIBDB)
# If dbopen is not in libc, then checking whether it is in libdb
# is difficult: db_185.h may #define it as __db185_open
# Instead, we just trust it is in libdb; linking will fail if it
# is not.
AC_CHECK_FUNC(dbopen, [HAVE_LIBDB=], [HAVE_LIBDB=-ldb])
fi
# Check for --with-wctype-functions
AC_MSG_CHECKING(for --with-wctype-functions)
AC_ARG_WITH(wctype-functions,
[ --with-wctype-functions use wctype.h functions], [
if test "$withval" != no
then AC_DEFINE(WANT_WCTYPE_FUNCTIONS) AC_MSG_RESULT(yes)
else AC_MSG_RESULT(no)
fi],
[AC_MSG_RESULT(no)])
# -I${DLINCLDIR} is added to the compile rule for importdl.o
AC_SUBST(DLINCLDIR)
DLINCLDIR=/
AC_MSG_CHECKING(for --with-sgi-dl)
AC_ARG_WITH(sgi-dl,
[ --with-sgi-dl=DIRECTORY IRIX 4 dynamic linking], [
AC_MSG_RESULT($withval)
AC_DEFINE(WITH_SGI_DL)
DYNLOADFILE="dynload_dl.o"
dldir=$withval
if test ! -z "$dldir" -a -d "$dldir"
then LDFLAGS="$LDFLAGS -L$dldir"
else AC_ERROR(proper usage is --with-sgi-dl=DIRECTORY)
fi
DLINCLDIR=${dldir}
LIBS="$LIBS -ldl -lmld"], AC_MSG_RESULT(no))
AC_MSG_CHECKING(for --with-dl-dld)
AC_ARG_WITH(dl-dld, [ --with-dl-dld=DL_DIR,DLD_DIR GNU dynamic linking], [
AC_MSG_RESULT($withval)
AC_DEFINE(WITH_DL_DLD)
DYNLOADFILE="dynload_dl.o"
dldir=`echo "$withval" | sed 's/,.*//'`
dlddir=`echo "$withval" | sed 's/.*,//'`
if test ! -z "$dldir" -a -d "$dldir" -a ! -z "$dlddir" -a -d "$dlddir"
then LDFLAGS="$LDFLAGS -L$dldir -L$dlddir"
else AC_ERROR(proper usage is --with-dl-dld=DL_DIRECTORY,DLD_DIRECTORY)
fi
DLINCLDIR=${dldir}
LIBS="$LIBS -ldl -ldld"], AC_MSG_RESULT(no))
# the dlopen() function means we might want to use dynload_shlib.o. some
# platforms, such as AIX, have dlopen(), but don't want to use it.
AC_CHECK_FUNCS(dlopen)
# DYNLOADFILE specifies which dynload_*.o file we will use for dynamic
# loading of modules.
AC_SUBST(DYNLOADFILE)
AC_MSG_CHECKING(DYNLOADFILE)
if test -z "$DYNLOADFILE"
then
case $ac_sys_system/$ac_sys_release in
AIX*) DYNLOADFILE="dynload_aix.o";;
BeOS*) DYNLOADFILE="dynload_beos.o";;
hp*|HP*) DYNLOADFILE="dynload_hpux.o";;
Darwin/*|next/*) DYNLOADFILE="dynload_next.o";;
*)
# use dynload_shlib.c and dlopen() if we have it; otherwise stub
# out any dynamic loading
if test "$ac_cv_func_dlopen" = yes
then DYNLOADFILE="dynload_shlib.o"
else DYNLOADFILE="dynload_stub.o"
fi
;;
esac
fi
AC_MSG_RESULT($DYNLOADFILE)
if test "$DYNLOADFILE" != "dynload_stub.o"
then
AC_DEFINE(HAVE_DYNAMIC_LOADING)
fi
# checks for library functions
AC_CHECK_FUNCS(alarm chown clock confstr ctermid ctermid_r execv \
flock fork fsync fdatasync fpathconf ftime ftruncate \
getgroups getlogin getpeername getpid getpwent getwd \
kill link lstat mkfifo mktime mremap \
nice pathconf pause plock poll pthread_init \
putenv readlink \
select setegid seteuid setgid \
setlocale setregid setreuid setsid setpgid setuid setvbuf \
sigaction siginterrupt sigrelse strftime strptime symlink sysconf \
tcgetpgrp tcsetpgrp tempnam timegm times tmpfile tmpnam tmpnam_r \
truncate uname waitpid _getpty)
# check for openpty and forkpty
AC_CHECK_FUNCS(openpty,, AC_CHECK_LIB(util,openpty, [AC_DEFINE(HAVE_OPENPTY)] [LIBS="$LIBS -lutil"]))
AC_CHECK_FUNCS(forkpty,, AC_CHECK_LIB(util,forkpty, [AC_DEFINE(HAVE_FORKPTY)] [LIBS="$LIBS -lutil"]))
# check for long file support functions
AC_CHECK_FUNCS(fseek64 fseeko fstatvfs ftell64 ftello statvfs)
AC_REPLACE_FUNCS(dup2 getcwd strdup strerror memmove)
AC_CHECK_FUNCS(getpgrp, AC_TRY_COMPILE([#include <unistd.h>], [getpgrp(0);], AC_DEFINE(GETPGRP_HAVE_ARG)))
AC_CHECK_FUNCS(setpgrp, AC_TRY_COMPILE([#include <unistd.h>], [setpgrp(0,0);], AC_DEFINE(SETPGRP_HAVE_ARG)))
AC_CHECK_FUNCS(gettimeofday, AC_TRY_COMPILE([#include <sys/time.h>], [gettimeofday((struct timeval*)0,(struct timezone*)0);], ,AC_DEFINE(GETTIMEOFDAY_NO_TZ)))
# checks for structures
AC_HEADER_TIME
AC_STRUCT_TM
AC_STRUCT_TIMEZONE
AC_MSG_CHECKING(for time.h that defines altzone)
AC_CACHE_VAL(ac_cv_header_time_altzone,
[AC_TRY_COMPILE([#include <time.h>], [return altzone;],
ac_cv_header_time_altzone=yes,
ac_cv_header_time_altzone=no)])
AC_MSG_RESULT($ac_cv_header_time_altzone)
if test $ac_cv_header_time_altzone = yes; then
AC_DEFINE(HAVE_ALTZONE)
fi
was_it_defined=no
AC_MSG_CHECKING(whether sys/select.h and sys/time.h may both be included)
AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/select.h>
#include <sys/time.h>
], [;], [AC_DEFINE(SYS_SELECT_WITH_SYS_TIME) was_it_defined=yes])
AC_MSG_RESULT($was_it_defined)
# checks for compiler characteristics
AC_C_CHAR_UNSIGNED
AC_C_CONST
works=no
AC_MSG_CHECKING(for working volatile)
AC_TRY_COMPILE([],[volatile int x; x = 0;], works=yes, AC_DEFINE(volatile, []))
AC_MSG_RESULT($works)
works=no
AC_MSG_CHECKING(for working signed char)
AC_TRY_COMPILE([], [signed char c;], works=yes, AC_DEFINE(signed, []))
AC_MSG_RESULT($works)
have_prototypes=no
AC_MSG_CHECKING(for prototypes)
AC_TRY_COMPILE([int foo(int x) { return 0; }], [return foo(10);],
AC_DEFINE(HAVE_PROTOTYPES) have_prototypes=yes)
AC_MSG_RESULT($have_prototypes)
works=no
AC_MSG_CHECKING(for variable length prototypes and stdarg.h)
AC_TRY_COMPILE([
#include <stdarg.h>
int foo(int x, ...) {
va_list va;
va_start(va, x);
va_arg(va, int);
va_arg(va, char *);
va_arg(va, double);
return 0;
}
], [return foo(10, "", 3.14);],
AC_DEFINE(HAVE_STDARG_PROTOTYPES) works=yes)
AC_MSG_RESULT($works)
if test "$have_prototypes" = yes; then
bad_prototypes=no
AC_MSG_CHECKING(for bad exec* prototypes)
AC_TRY_COMPILE([#include <unistd.h>], [char **t;execve("@",t,t);], ,
AC_DEFINE(BAD_EXEC_PROTOTYPES) bad_prototypes=yes)
AC_MSG_RESULT($bad_prototypes)
fi
bad_forward=no
AC_MSG_CHECKING(for bad static forward)
AC_TRY_RUN([
struct s { int a; int b; };
static struct s foo;
int foobar() {
static int random;
random = (int) &foo;
return random;
}
static struct s foo = { 1, 2 };
main() {
exit(!((int)&foo == foobar()));
}
], , AC_DEFINE(BAD_STATIC_FORWARD) bad_forward=yes)
AC_MSG_RESULT($bad_forward)
va_list_is_array=no
AC_MSG_CHECKING(whether va_list is an array)
AC_TRY_COMPILE([
#ifdef HAVE_STDARG_PROTOTYPES
#include <stdarg.h>
#else
#include <varargs.h>
#endif
], [va_list list1, list2; list1 = list2;], ,
AC_DEFINE(VA_LIST_IS_ARRAY) va_list_is_array=yes)
AC_MSG_RESULT($va_list_is_array)
# sigh -- gethostbyname_r is a mess; it can have 3, 5 or 6 arguments :-(
AC_CHECK_FUNC(gethostbyname_r, [
AC_DEFINE(HAVE_GETHOSTBYNAME_R)
AC_MSG_CHECKING([gethostbyname_r with 6 args])
OLD_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
AC_TRY_COMPILE([
# include <netdb.h>
], [
char *name;
struct hostent *he, *res;
char buffer[2048];
int buflen = 2048;
int h_errnop;
(void) gethostbyname_r(name, he, buffer, buflen, &res, &h_errnop)
], [
AC_DEFINE(HAVE_GETHOSTBYNAME_R)
AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG)
AC_MSG_RESULT(yes)
], [
AC_MSG_RESULT(no)
AC_MSG_CHECKING([gethostbyname_r with 5 args])
AC_TRY_COMPILE([
# include <netdb.h>
], [
char *name;
struct hostent *he;
char buffer[2048];
int buflen = 2048;
int h_errnop;
(void) gethostbyname_r(name, he, buffer, buflen, &h_errnop)
], [
AC_DEFINE(HAVE_GETHOSTBYNAME_R)
AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG)
AC_MSG_RESULT(yes)
], [
AC_MSG_RESULT(no)
AC_MSG_CHECKING([gethostbyname_r with 3 args])
AC_TRY_COMPILE([
# include <netdb.h>
], [
char *name;
struct hostent *he;
struct hostent_data data;
(void) gethostbyname_r(name, he, &data);
], [
AC_DEFINE(HAVE_GETHOSTBYNAME_R)
AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG)
AC_MSG_RESULT(yes)
], [
AC_MSG_RESULT(no)
])
])
])
CFLAGS=$OLD_CFLAGS
], [
AC_CHECK_FUNCS(gethostbyname)
])
AC_SUBST(HAVE_GETHOSTBYNAME_R_6_ARG)
AC_SUBST(HAVE_GETHOSTBYNAME_R_5_ARG)
AC_SUBST(HAVE_GETHOSTBYNAME_R_3_ARG)
AC_SUBST(HAVE_GETHOSTBYNAME_R)
AC_SUBST(HAVE_GETHOSTBYNAME)
# checks for system services
# (none yet)
# Linux requires this for correct f.p. operations
AC_CHECK_FUNC(__fpu_control,
[],
[AC_CHECK_LIB(ieee, __fpu_control)
])
# Check for --with-fpectl
AC_MSG_CHECKING(for --with-fpectl)
AC_ARG_WITH(fpectl,
[ --with-fpectl enable SIGFPE catching], [
if test "$withval" != no
then AC_DEFINE(WANT_SIGFPE_HANDLER) AC_MSG_RESULT(yes)
else AC_MSG_RESULT(no)
fi],
[AC_MSG_RESULT(no)])
# check for --with-libm=...
AC_SUBST(LIBM)
case $ac_sys_system in
Darwin) ;;
next) ;;
BeOS) ;;
*) LIBM=-lm
esac
AC_MSG_CHECKING(for --with-libm=STRING)
AC_ARG_WITH(libm, [ --with-libm=STRING math library], [
if test "$withval" = no
then LIBM=
AC_MSG_RESULT(force LIBM empty)
elif test "$withval" != yes
then LIBM=$withval
AC_MSG_RESULT(set LIBM=\"$withval\")
else AC_ERROR(proper usage is --with-libm=STRING)
fi],
[AC_MSG_RESULT(default LIBM=\"$LIBM\")])
# check for --with-libc=...
AC_SUBST(LIBC)
AC_MSG_CHECKING(for --with-libc=STRING)
AC_ARG_WITH(libc, [ --with-libc=STRING C library], [
if test "$withval" = no
then LIBC=
AC_MSG_RESULT(force LIBC empty)
elif test "$withval" != yes
then LIBC=$withval
AC_MSG_RESULT(set LIBC=\"$withval\")
else AC_ERROR(proper usage is --with-libc=STRING)
fi],
[AC_MSG_RESULT(default LIBC=\"$LIBC\")])
# check for hypot() in math library
LIBS_SAVE=$LIBS
LIBS="$LIBS $LIBM"
AC_REPLACE_FUNCS(hypot)
LIBS=$LIBS_SAVE
# check whether malloc(0) returns NULL or not
AC_MSG_CHECKING(what malloc(0) returns)
AC_CACHE_VAL(ac_cv_malloc_zero,
[AC_TRY_RUN([#include <stdio.h>
#ifdef HAVE_STDLIB
#include <stdlib.h>
#else
char *malloc(), *realloc();
int *free();
#endif
main() {
char *p;
p = malloc(0);
if (p == NULL) exit(1);
p = realloc(p, 0);
if (p == NULL) exit(1);
free(p);
exit(0);
}], ac_cv_malloc_zero=nonnull, ac_cv_malloc_zero=null)])
AC_MSG_RESULT($ac_cv_malloc_zero)
if test "$ac_cv_malloc_zero" = null
then
AC_DEFINE(MALLOC_ZERO_RETURNS_NULL)
fi
# check for wchar.h
AC_CHECK_HEADER(wchar.h,
AC_DEFINE(HAVE_WCHAR_H) wchar_h="yes",
wchar_h="no"
)
# check for usable wchar_t
usable_wchar_t="unkown"
AC_MSG_CHECKING(for usable wchar_t)
AC_TRY_RUN([
#include "wchar.h"
#include "wctype.h"
main() {
wchar_t s;
if (sizeof(s) == 2)
exit(0);
else
exit(1);
}
],
AC_DEFINE(HAVE_USABLE_WCHAR_T) usable_wchar_t="yes",
usable_wchar_t="no")
AC_MSG_RESULT($usable_wchar_t)
# check for endianness
AC_C_BIGENDIAN
# Check whether right shifting a negative integer extends the sign bit
# or fills with zeros (like the Cray J90, according to Tim Peters).
AC_MSG_CHECKING(whether right shift extends the sign bit)
AC_CACHE_VAL(ac_cv_rshift_extends_sign, [
AC_TRY_RUN([
int main()
{
exit(((-1)>>3 == -1) ? 0 : 1);
}
], ac_cv_rshift_extends_sign=yes, ac_cv_rshift_extends_sign=no)])
AC_MSG_RESULT($ac_cv_rshift_extends_sign)
if test "$ac_cv_rshift_extends_sign" = no
then
AC_DEFINE(SIGNED_RIGHT_SHIFT_ZERO_FILLS)
fi
# check for getc_unlocked and related locking functions
AC_MSG_CHECKING(for getc_unlocked() and friends)
AC_CACHE_VAL(ac_cv_have_getc_unlocked, [
AC_TRY_LINK([#include <stdio.h>],[
FILE *f = fopen("/dev/null", "r");
flockfile(f);
getc_unlocked(f);
funlockfile(f);
], ac_cv_have_getc_unlocked=yes, ac_cv_have_getc_unlocked=no)])
AC_MSG_RESULT($ac_cv_have_getc_unlocked)
if test "$ac_cv_have_getc_unlocked" = yes
then
AC_DEFINE(HAVE_GETC_UNLOCKED)
fi
# THIS MUST BE LAST, IT CAN BREAK OTHER TESTS!
# Add sys/socket.h to confdefs.h
cat >> confdefs.h <<\EOF
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
EOF
AC_CHECK_TYPE(socklen_t, int)
AC_MSG_CHECKING(for Modules/Setup)
if test ! -f Modules/Setup ; then
if test ! -d Modules ; then
mkdir Modules
fi
cp "$srcdir/Modules/Setup.dist" Modules/Setup
AC_MSG_RESULT(creating)
else
AC_MSG_RESULT(already exists)
fi
# generate output files
AC_OUTPUT(Makefile \
Objects/Makefile \
Parser/Makefile \
Grammar/Makefile \
Python/Makefile \
Modules/Makefile.pre \
Modules/Setup.config)