diff options
Diffstat (limited to 'configure.in')
-rw-r--r-- | configure.in | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/configure.in b/configure.in index 8eebe814e..89257b497 100644 --- a/configure.in +++ b/configure.in @@ -161,6 +161,12 @@ AC_C_BIGENDIAN AC_CHECK_SIZEOF(int) AC_CHECK_SIZEOF(long) + +dnl by the pre C9X ANSI C standards, size_t & ptrdiff_t have to be +dnl representable by a standard integral type. since the largest +dnl integer type in the pre-C9X ANSI C standards is long... +AC_CHECK_TYPE(ptrdiff_t, long) + AC_CACHE_CHECK([for long longs], scm_cv_long_longs, AC_TRY_COMPILE(, [long long a], @@ -168,13 +174,32 @@ AC_CACHE_CHECK([for long longs], scm_cv_long_longs, scm_cv_long_longs=no)) if test "$scm_cv_long_longs" = yes; then AC_DEFINE(HAVE_LONG_LONGS) + AC_CHECK_SIZEOF(long long) +fi + +AC_CHECK_SIZEOF(void *) + +if test "$ac_cv_sizeof_long" -eq "$ac_cv_sizeof_void_p"; then + AC_DEFINE(SCM_BITS_T, long) + AC_DEFINE(SCM_UBITS_T, unsigned long) + AC_DEFINE(SCM_SIZEOF_BITS_T, SIZEOF_LONG) +elif test \( "$scm_cv_long_longs" = yes \) -a \( "$ac_cv_sizeof_long_long" -eq "$ac_cv_sizeof_void_p" \); then + AC_DEFINE(SCM_BITS_T, long long) + AC_DEFINE(SCM_UBITS_T, unsigned long long) + AC_DEFINE(SCM_SIZEOF_BITS_T, SIZEOF_LONG_LONG) +elif test "$ac_cv_sizeof_int" -eq "$ac_cv_sizeof_void_p"; then + AC_DEFINE(SCM_BITS_T, int) + AC_DEFINE(SCM_UBITS_T, unsigned int) + AC_DEFINE(SCM_SIZEOF_BITS_T, SIZEOF_INT) +else + AC_MSG_ERROR(cannot find an integral type capable of storing a pointer: "$ac_cv_sizeof_void_p" bytes) fi AC_HEADER_STDC AC_HEADER_DIRENT AC_HEADER_TIME AC_HEADER_SYS_WAIT -AC_CHECK_HEADERS(io.h libc.h limits.h malloc.h memory.h string.h regex.h rxposix.h rx/rxposix.h sys/ioctl.h sys/select.h sys/time.h sys/timeb.h sys/times.h sys/types.h sys/utime.h time.h unistd.h utime.h) +AC_CHECK_HEADERS(io.h libc.h limits.h malloc.h memory.h string.h regex.h rxposix.h rx/rxposix.h sys/ioctl.h sys/select.h sys/time.h sys/timeb.h sys/times.h sys/stdtypes.h sys/types.h sys/utime.h time.h unistd.h utime.h) GUILE_HEADER_LIBC_WITH_UNISTD AC_TYPE_GETGROUPS |