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author | Jim Meyering <jim@meyering.net> | 1998-05-14 16:03:15 +0000 |
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committer | Jim Meyering <jim@meyering.net> | 1998-05-14 16:03:15 +0000 |
commit | b49e060cdaa8e76ed471eee45706f9c0120d77f2 (patch) | |
tree | 934a1ddaf183907ed541f8af9fd53b5accc7c390 /m4/utimbuf.m4 | |
parent | e7696598525b9f32e727b7cd37db758ec5ce54cf (diff) | |
download | coreutils-b49e060cdaa8e76ed471eee45706f9c0120d77f2.tar.xz |
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Diffstat (limited to 'm4/utimbuf.m4')
-rw-r--r-- | m4/utimbuf.m4 | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/m4/utimbuf.m4 b/m4/utimbuf.m4 new file mode 100644 index 000000000..7af3d1470 --- /dev/null +++ b/m4/utimbuf.m4 @@ -0,0 +1,49 @@ +#serial 1 + +dnl From Jim Meyering + +dnl Define HAVE_STRUCT_UTIMBUF if `struct utimbuf' is declared -- +dnl usually in <utime.h>. +dnl Some systems have utime.h but don't declare the struct anywhere. + +AC_DEFUN(jm_STRUCT_UTIMBUF, +[ + AC_CHECK_HEADERS(utime.h) + AC_REQUIRE([AC_HEADER_TIME]) + AC_CACHE_CHECK([for struct utimbuf], fu_cv_sys_struct_utimbuf, + [AC_TRY_COMPILE( + [ +#ifdef TIME_WITH_SYS_TIME +# include <sys/time.h> +# include <time.h> +#else +# ifdef HAVE_SYS_TIME_H +# include <sys/time.h> +# else +# include <time.h> +# endif +#endif +#ifdef HAVE_UTIME_H +# include <utime.h> +#endif + ], + [static struct utimbuf x; x.actime = x.modtime;], + fu_cv_sys_struct_utimbuf=yes, + fu_cv_sys_struct_utimbuf=no) + ]) + + if test $fu_cv_sys_struct_utimbuf = yes; then + if test x = y; then + # This code is deliberately never run via ./configure. + # FIXME: this is a hack to make autoheader put the corresponding + # HAVE_* undef for this symbol in config.h.in. This saves me the + # trouble of having to maintain the #undef in acconfig.h manually. + AC_CHECK_FUNCS(STRUCT_UTIMBUF) + fi + # Defining it this way (rather than via AC_DEFINE) short-circuits the + # autoheader check -- autoheader doesn't know it's already been taken + # care of by the hack above. + ac_kludge=HAVE_STRUCT_UTIMBUF + AC_DEFINE_UNQUOTED($ac_kludge) + fi +]) |