Check size of uid_t and gid_t using AC_CHECK_SIZEOF
This built-in check is simpler than the previous method and, most importantly, works when cross-compiling. Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
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12
configure.in
12
configure.in
@ -335,16 +335,10 @@ if test "$enable_subids" != "no"; then
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dnl
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dnl FIXME: check if 32 bit UIDs/GIDs are supported by libc
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dnl
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AC_RUN_IFELSE([AC_LANG_SOURCE([
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#include <sys/types.h>
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int main(void) {
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uid_t u;
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gid_t g;
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return (sizeof u < 4) || (sizeof g < 4);
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}
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])], [id32bit="yes"], [id32bit="no"])
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AC_CHECK_SIZEOF([uid_t],, [#include "sys/types.h"])
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AC_CHECK_SIZEOF([gid_t],, [#include "sys/types.h"])
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if test "x$id32bit" = "xyes"; then
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if test "$ac_cv_sizeof_uid_t" -ge 4 && test "$ac_cv_sizeof_gid_t" -ge 4; then
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AC_DEFINE(ENABLE_SUBIDS, 1, [Define to support the subordinate IDs.])
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enable_subids="yes"
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else
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