| 1 | dnl @synopsis AX_CHECK_DIRENT_D_TYPE([ACTION-IF-TRUE], [ACTION-IF-FALSE]) |
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| 2 | dnl |
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| 3 | dnl This macro will find out if struct dirent.d_type is present and supported. |
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| 4 | dnl |
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| 5 | dnl The following defines will be set as appropriate: |
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| 6 | dnl HAVE_STRUCT_DIRENT_D_TYPE |
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| 7 | dnl HAVE_VALID_DIRENT_D_TYPE |
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| 8 | dnl Also ACTION-IF-TRUE and ACTION-IF-FALSE are run as appropriate |
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| 9 | dnl |
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| 10 | dnl @category C |
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| 11 | dnl @author Martin Ebourne |
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| 12 | dnl @version 2005/07/03 |
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| 13 | dnl @license AllPermissive |
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| 14 | |
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| 15 | AC_DEFUN([AX_CHECK_DIRENT_D_TYPE], [ |
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| 16 | AC_CHECK_MEMBERS([struct dirent.d_type],,, [[#include <dirent.h>]]) |
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| 17 | if test "x$ac_cv_member_struct_dirent_d_type" = "xyes"; then |
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| 18 | AC_CACHE_CHECK([[whether struct dirent.d_type is valid]], [box_cv_have_valid_dirent_d_type], |
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| 19 | [AC_TRY_RUN( |
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| 20 | [ |
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| 21 | $ac_includes_default |
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| 22 | #include <dirent.h> |
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| 23 | int main() |
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| 24 | { |
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| 25 | DIR* dir = opendir("."); |
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| 26 | struct dirent* res = NULL; |
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| 27 | if(dir) res = readdir(dir); |
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| 28 | return res ? (res->d_type != DT_FILE && res->d_type != DT_DIR) : 1; |
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| 29 | } |
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| 30 | ], |
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| 31 | [box_cv_have_valid_dirent_d_type=yes], |
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| 32 | [box_cv_have_valid_dirent_d_type=no], |
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| 33 | [box_cv_have_valid_dirent_d_type=cross] |
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| 34 | )]) |
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| 35 | if test "x$box_cv_have_valid_dirent_d_type" = "xyes"; then |
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| 36 | AC_DEFINE([HAVE_VALID_DIRENT_D_TYPE], 1, [Define to 1 if struct dirent.d_type is valid]) |
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| 37 | fi |
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| 38 | fi |
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| 39 | if test "x$ac_cv_member_struct_dirent_d_type" = "xyes" || \ |
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| 40 | test "x$box_cv_have_valid_dirent_d_type" = "xyes" |
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| 41 | then |
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| 42 | m4_ifvaln([$1],[$1],[:])dnl |
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| 43 | m4_ifvaln([$2],[else $2])dnl |
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| 44 | fi |
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| 45 | ])dnl |
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