Cross-compiling Python
Marc Poinot
Marc.Poinot at onera.fr
Fri May 26 03:29:54 EDT 2000
"Alexander V. Voinov" wrote:
>
> Hi,
>
> Jan Kybic wrote:
> >
> > > > Has anyone here ever tried to cross-compile Python?
> > >
> > > I tried, and I changed the tests in configure.in, which try to run apps
> >
> > Perfect. Could you post/make available your configure.in somewhere?
>
> Sorry, I meant just the idea, it's unlikely that I retained these
> examples.
>
> Alexander
>
> --
> http://www.python.org/mailman/listinfo/python-list
Here's a configure.in I used to cross compile on SGI for NEC supercomputers.
You have to find out the AC_TRY_RUN and remove them. They are trying
to run a test on local platform.
You may have to modify it, this configure.in has been quickly hacked
and it produces a correct set of build files for us.
Try it on your platform.
Marcvs [alias I first had the idea to make a Word attachment, but
I found it was *not* funny]
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dnl Process this file with autoconf 2.0 or later to make a configure script.
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#
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AC_PROG_CC
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AC_MSG_CHECKING(LINKCC)
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AIX*)
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#define spam(name, doc) {#name, &name, #name "() -- " doc}
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AC_MSG_RESULT(required for framework build)
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AC_SUBST(CCSHARED)
AC_SUBST(LINKFORSHARED)
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hp*|HP*) SO=.sl;;
*) SO=.so;;
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AC_MSG_RESULT($SO)
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# (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)
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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";;
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SunOS/4*) LDSHARED="ld";;
SunOS/5*) LDSHARED="ld -G";;
hp*|HP*) LDSHARED="ld -b";;
OSF*) LDSHARED="ld -shared -expect_unresolved \"*\"";;
DYNIX/ptx*) LDSHARED="ld -G";;
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if test "$ns_dyld"
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fi
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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";;
FreeBSD*|OpenBSD*) CCSHARED="-fpic";;
NetBSD*) CCSHARED="-fPIC";;
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*gcc*) CCSHARED="-shared";;
*) CCSHARED="";;
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esac
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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";;
FreeBSD/3*) 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" ;;
SCO_SV*) LINKFORSHARED="-Bdynamic -dy -Wl,-Bexport";;
NetBSD*)
if [[ "`$CC -dM -E - </dev/null | grep __ELF__`" != "" ]]
then
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fi;;
SunOS/5*) case $CC in
*gcc*)
if $CC -Xlinker -V 2>/dev/null | grep BFD >/dev/null
then
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fi;;
esac;;
esac
fi
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IRIX*) ;;
*)
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AC_CHECK_LIB(socket, socket, [LIBS="-lsocket $LIBS"], [], $LIBS) # SVR4 sockets
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;;
esac
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AC_MSG_CHECKING(for --with(out)-readline)
AC_ARG_WITH(readline,
[--with(out)-readline obsolete, edit Modules/Setup instead],
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AC_SUBST(USE_THREAD_MODULE)
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AC_SUBST(LDLAST)
AC_ARG_WITH(dec-threads,
[--with-dec-threads use DEC Alpha/OSF1 thread-safe libraries],
[AC_MSG_RESULT($withval)
LDLAST=-threads
if test "${with_thread+set}" != set; then
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AC_MSG_RESULT(no))
AC_MSG_CHECKING(for --with-threads)
AC_ARG_WITH(threads, [--with-threads alias for --with-thread],
[AC_MSG_RESULT($withval)
if test "${with_thread+set}" != set; then
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AC_MSG_RESULT(no))
AC_MSG_CHECKING(for --with-thread)
AC_ARG_WITH(thread, [--with-thread[=DIRECTORY] make interpreter thread-safe], [
USE_THREAD_MODULE=
AC_MSG_RESULT($withval)
if test -d "$withval"
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AC_DEFINE(_REENTRANT)
AC_CHECK_HEADER(mach/cthreads.h, [AC_DEFINE(WITH_THREAD)
AC_DEFINE(C_THREADS)
LIBOBJS="$LIBOBJS thread.o"],[
AC_CHECK_FUNC(pthread_detach, [AC_DEFINE(WITH_THREAD)
AC_DEFINE(_POSIX_THREADS)
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(pthread, pthread_create, [AC_DEFINE(WITH_THREAD)
AC_DEFINE(_POSIX_THREADS)
LIBS="$LIBS -lpthread"
LIBOBJS="$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(cma, pthread_create, [AC_DEFINE(WITH_THREAD)
AC_DEFINE(_POSIX_THREADS)
LIBS="$LIBS -lcma"
LIBOBJS="$LIBOBJS thread.o"])
])])])])])])])
AC_CHECK_LIB(mpc, usconfig, [AC_DEFINE(WITH_THREAD)
LIBS="$LIBS -lmpc"
LIBOBJS="$LIBOBJS thread.o"])
AC_CHECK_LIB(thread, thr_create, [AC_DEFINE(WITH_THREAD)
LIBS="$LIBS -lthread"
LIBOBJS="$LIBOBJS thread.o"])
], 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)
dldir=$withval
if test -d "$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($withval)
AC_DEFINE(WITH_DL_DLD)
dldir=`echo "$withval" | sed 's/,.*//'`
dlddir=`echo "$withval" | sed 's/.*,//'`
if test -d "$dldir" -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))
# checks for library functions
AC_CHECK_FUNCS(alarm chown clock dlopen execv flock fork \
fsync fdatasync ftime ftruncate \
getpeername getpgrp getpid getpwent gettimeofday getwd \
kill link lstat mkfifo mktime nice pause plock pthread_init putenv readlink \
select setgid setlocale setuid setsid setpgid setpgrp setvbuf \
sigaction siginterrupt sigrelse strftime strptime symlink \
tcgetpgrp tcsetpgrp timegm times truncate uname waitpid)
# 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_FUNC(getpgrp, AC_TRY_COMPILE([#include <unistd.h>], [getpgrp(0);], AC_DEFINE(GETPGRP_HAVE_ARG)))
AC_CHECK_FUNC(setpgrp, AC_TRY_COMPILE([#include <unistd.h>], [setpgrp(0,0);], AC_DEFINE(SETPGRP_HAVE_ARG)))
AC_CHECK_FUNC(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_FUNC(gethostbyname, AC_DEFINE(HAVE_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_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])
# check for --with-libm=...
AC_SUBST(LIBM)
case $ac_sys_system in
next) ;;
BeOS) ;;
*) LIBM=-lm
esac
AC_MSG_CHECKING(for --with-libm=STRING)
AC_ARG_WITH(libm, [--with-libm=STRING math library], [
if test "$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 $LIBM"
AC_CHECK_FUNCS(hypot)
AC_REPLACE_FUNCS(hypot)
LIBS=$LIBS_SAVE
# check for getopt
AC_MSG_CHECKING(for genuine getopt)
#AC_CACHE_VAL(ac_cv_func_getopt,
#[AC_TRY_RUN([#include <stdio.h>
#extern int optind, opterr, getopt();
#extern char* optarg;
#int main() {
# char* av[] = { "testprog", "parameter", "-fFlag", NULL };
# opterr = 0;
# if (getopt(3, av, "f:") == 'f') { exit(1); }
# exit(0);
#}], ac_cv_func_getopt=yes, ac_cv_func_getopt=no, ac_cv_func_getopt=no)])dnl
AC_MSG_RESULT($ac_cv_func_getopt)
test $ac_cv_func_getopt = no && LIBOBJS="$LIBOBJS getopt.o"
AC_SUBST(LIBOBJS)dnl
# 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
# generate output files
AC_OUTPUT(Makefile \
Objects/Makefile \
Parser/Makefile \
Python/Makefile \
Modules/Makefile.pre \
Modules/Setup.thread)
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