2 changed files with 4 additions and 98 deletions
@ -1,98 +0,0 @@ |
|||
AC_DEFUN([AC_COMPILE_CHECK_SIZEOF], |
|||
[changequote(<<, >>)dnl |
|||
dnl The name to #define. |
|||
define(<<AC_TYPE_NAME>>, translit(sizeof_$1, [a-z *], [A-Z_P]))dnl |
|||
dnl The cache variable name. |
|||
define(<<AC_CV_NAME>>, translit(ac_cv_sizeof_$1, [ *], [_p]))dnl |
|||
changequote([, ])dnl |
|||
AC_MSG_CHECKING(size of $1) |
|||
AC_CACHE_VAL(AC_CV_NAME, |
|||
[for ac_size in 4 8 1 2 16 12 $2 ; do # List sizes in rough order of prevalence. |
|||
AC_TRY_COMPILE([#include "confdefs.h" |
|||
#include <sys/types.h> |
|||
$2 |
|||
], [switch (0) case 0: case (sizeof ($1) == $ac_size):;], AC_CV_NAME=$ac_size) |
|||
if test x$AC_CV_NAME != x ; then break; fi |
|||
done |
|||
]) |
|||
if test x$AC_CV_NAME = x ; then |
|||
AC_MSG_ERROR([cannot determine a size for $1]) |
|||
fi |
|||
AC_MSG_RESULT($AC_CV_NAME) |
|||
AC_DEFINE_UNQUOTED(AC_TYPE_NAME, $AC_CV_NAME, [The number of bytes in type $1]) |
|||
undefine([AC_TYPE_NAME])dnl |
|||
undefine([AC_CV_NAME])dnl |
|||
]) |
|||
|
|||
AC_DEFUN([AC_C_BIGENDIAN_CROSS], |
|||
[AC_CACHE_CHECK(whether byte ordering is bigendian, ac_cv_c_bigendian, |
|||
[ac_cv_c_bigendian=unknown |
|||
# See if sys/param.h defines the BYTE_ORDER macro. |
|||
AC_TRY_COMPILE([#include <sys/types.h> |
|||
#include <sys/param.h>], [ |
|||
#if !BYTE_ORDER || !BIG_ENDIAN || !LITTLE_ENDIAN |
|||
bogus endian macros |
|||
#endif], [# It does; now see whether it defined to BIG_ENDIAN or not. |
|||
AC_TRY_COMPILE([#include <sys/types.h> |
|||
#include <sys/param.h>], [ |
|||
#if BYTE_ORDER != BIG_ENDIAN |
|||
not big endian |
|||
#endif], ac_cv_c_bigendian=yes, ac_cv_c_bigendian=no)]) |
|||
if test $ac_cv_c_bigendian = unknown; then |
|||
AC_TRY_RUN([main () { |
|||
/* Are we little or big endian? From Harbison&Steele. */ |
|||
union |
|||
{ |
|||
long l; |
|||
char c[sizeof (long)]; |
|||
} u; |
|||
u.l = 1; |
|||
exit (u.c[sizeof (long) - 1] == 1); |
|||
}], ac_cv_c_bigendian=no, ac_cv_c_bigendian=yes, |
|||
[ echo $ac_n "cross-compiling... " 2>&AC_FD_MSG ]) |
|||
fi]) |
|||
if test $ac_cv_c_bigendian = unknown; then |
|||
AC_MSG_CHECKING(to probe for byte ordering) |
|||
[ |
|||
cat >conftest.c <<EOF |
|||
short ascii_mm[] = { 0x4249, 0x4765, 0x6E44, 0x6961, 0x6E53, 0x7953, 0 }; |
|||
short ascii_ii[] = { 0x694C, 0x5454, 0x656C, 0x6E45, 0x6944, 0x6E61, 0 }; |
|||
void _ascii() { char* s = (char*) ascii_mm; s = (char*) ascii_ii; } |
|||
short ebcdic_ii[] = { 0x89D3, 0xE3E3, 0x8593, 0x95C5, 0x89C4, 0x9581, 0 }; |
|||
short ebcdic_mm[] = { 0xC2C9, 0xC785, 0x95C4, 0x8981, 0x95E2, 0xA8E2, 0 }; |
|||
void _ebcdic() { char* s = (char*) ebcdic_mm; s = (char*) ebcdic_ii; } |
|||
int main() { _ascii (); _ebcdic (); return 0; } |
|||
EOF |
|||
] if test -f conftest.c ; then |
|||
if ${CC-cc} ${CFLAGS} -c conftest.c -o conftest.o && test -f conftest.o ; then |
|||
if test `grep -l BIGenDianSyS conftest.o` ; then |
|||
echo $ac_n ' big endian probe OK, ' 1>&AC_FD_MSG |
|||
ac_cv_c_bigendian=yes |
|||
fi |
|||
if test `grep -l LiTTleEnDian conftest.o` ; then |
|||
echo $ac_n ' little endian probe OK, ' 1>&AC_FD_MSG |
|||
if test $ac_cv_c_bigendian = yes ; then |
|||
ac_cv_c_bigendian=unknown; |
|||
else |
|||
ac_cv_c_bigendian=no |
|||
fi |
|||
fi |
|||
echo $ac_n 'guessing bigendian ... ' >&AC_FD_MSG |
|||
fi |
|||
fi |
|||
AC_MSG_RESULT($ac_cv_c_bigendian) |
|||
fi |
|||
if test $ac_cv_c_bigendian = yes; then |
|||
AC_DEFINE(WORDS_BIGENDIAN, 1, [whether byteorder is bigendian]) |
|||
AC_DEFINE(HOST_WORDS_BIG_ENDIAN, 1, |
|||
[Define if the host machine stores words of multi-word integers in |
|||
big-endian order.]) |
|||
BYTEORDER=4321 |
|||
else |
|||
BYTEORDER=1234 |
|||
fi |
|||
AC_DEFINE_UNQUOTED(BYTEORDER, $BYTEORDER, [1234 = LIL_ENDIAN, 4321 = BIGENDIAN]) |
|||
if test $ac_cv_c_bigendian = unknown; then |
|||
AC_MSG_ERROR([unknown endianess - sorry, please pre-set ac_cv_c_bigendian]) |
|||
fi |
|||
]) |
|||
Loading…
Reference in new issue