33 lines
1.0 KiB
Plaintext
33 lines
1.0 KiB
Plaintext
#serial 5
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dnl From Paul Eggert.
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# Define ST_MTIM_NSEC to be the nanoseconds member of struct stat's st_mtim,
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# if it exists.
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AC_DEFUN([AC_STRUCT_ST_MTIM_NSEC],
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[AC_CACHE_CHECK([for nanoseconds member of struct stat.st_mtim],
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ac_cv_struct_st_mtim_nsec,
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[ac_save_CPPFLAGS="$CPPFLAGS"
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ac_cv_struct_st_mtim_nsec=no
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# tv_nsec -- the usual case
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# _tv_nsec -- Solaris 2.6, if
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# (defined _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED == 1
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# && !defined __EXTENSIONS__)
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# st__tim.tv_nsec -- UnixWare 2.1.2
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for ac_val in tv_nsec _tv_nsec st__tim.tv_nsec; do
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CPPFLAGS="$ac_save_CPPFLAGS -DST_MTIM_NSEC=$ac_val"
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AC_TRY_COMPILE([#include <sys/types.h>
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#include <sys/stat.h>], [struct stat s; s.st_mtim.ST_MTIM_NSEC;],
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[ac_cv_struct_st_mtim_nsec=$ac_val; break])
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done
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CPPFLAGS="$ac_save_CPPFLAGS"])
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if test $ac_cv_struct_st_mtim_nsec != no; then
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AC_DEFINE_UNQUOTED(ST_MTIM_NSEC, $ac_cv_struct_st_mtim_nsec,
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[Define to be the nanoseconds member of struct stat's st_mtim,
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if it exists.])
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fi
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]
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)
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