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92 lines
2.7 KiB
Text
92 lines
2.7 KiB
Text
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# $Id$
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# Try and configure sequence support.
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AC_DEFUN(AM_SEQUENCE_CONFIGURE, [
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AC_MSG_CHECKING([for 64-bit integral type support for sequences])
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db_cv_build_sequence="yes"
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# Have to have found 64-bit types to support sequences. If we don't
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# find the native types, we try and create our own.
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if test "$ac_cv_type_int64_t" = "no" -a -z "$int64_decl"; then
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db_cv_build_sequence="no"
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fi
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if test "$ac_cv_type_uint64_t" = "no" -a -z "$u_int64_decl"; then
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db_cv_build_sequence="no"
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fi
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# Figure out what type is the right size, and set the format.
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AC_SUBST(INT64_FMT)
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AC_SUBST(UINT64_FMT)
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db_cv_seq_type="no"
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if test "$db_cv_build_sequence" = "yes" -a\
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"$ac_cv_sizeof_long" -eq "8"; then
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db_cv_seq_type="long"
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db_cv_seq_fmt='"%ld"'
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db_cv_seq_ufmt='"%lu"'
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INT64_FMT='#define INT64_FMT "%ld"'
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UINT64_FMT='#define UINT64_FMT "%lu"'
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else if test "$db_cv_build_sequence" = "yes" -a\
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"$ac_cv_sizeof_long_long" -eq "8"; then
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db_cv_seq_type="long long"
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db_cv_seq_fmt='"%lld"'
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db_cv_seq_ufmt='"%llu"'
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INT64_FMT='#define INT64_FMT "%lld"'
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UINT64_FMT='#define UINT64_FMT "%llu"'
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else
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db_cv_build_sequence="no"
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fi
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fi
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# Test to see if we can declare variables of the appropriate size
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# and format them. If we're cross-compiling, all we get is a link
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# test, which won't test for the appropriate printf format strings.
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if test "$db_cv_build_sequence" = "yes"; then
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AC_TRY_RUN([
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main() {
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$db_cv_seq_type l;
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unsigned $db_cv_seq_type u;
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char buf@<:@100@:>@;
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buf@<:@0@:>@ = 'a';
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l = 9223372036854775807LL;
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(void)snprintf(buf, sizeof(buf), $db_cv_seq_fmt, l);
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if (strcmp(buf, "9223372036854775807"))
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return (1);
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u = 18446744073709551615ULL;
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(void)snprintf(buf, sizeof(buf), $db_cv_seq_ufmt, u);
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if (strcmp(buf, "18446744073709551615"))
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return (1);
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return (0);
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}],, [db_cv_build_sequence="no"],
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AC_TRY_LINK(,[
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$db_cv_seq_type l;
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unsigned $db_cv_seq_type u;
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char buf@<:@100@:>@;
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buf@<:@0@:>@ = 'a';
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l = 9223372036854775807LL;
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(void)snprintf(buf, sizeof(buf), $db_cv_seq_fmt, l);
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if (strcmp(buf, "9223372036854775807"))
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return (1);
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u = 18446744073709551615ULL;
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(void)snprintf(buf, sizeof(buf), $db_cv_seq_ufmt, u);
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if (strcmp(buf, "18446744073709551615"))
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return (1);
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return (0);
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],, [db_cv_build_sequence="no"]))
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fi
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if test "$db_cv_build_sequence" = "yes"; then
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AC_SUBST(db_seq_decl)
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db_seq_decl="typedef $db_cv_seq_type db_seq_t;";
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AC_DEFINE(HAVE_64BIT_TYPES)
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AH_TEMPLATE(HAVE_64BIT_TYPES,
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[Define to 1 if 64-bit types are available.])
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else
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# It still has to compile, but it won't run.
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db_seq_decl="typedef int db_seq_t;";
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fi
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AC_MSG_RESULT($db_cv_build_sequence)
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])
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