| 1 | AC_CACHE_CHECK([for broken readdir],libreplace_cv_READDIR_NEEDED,[
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| 2 | AC_TRY_RUN([
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| 3 | #define test_readdir_os2_delete main
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| 4 | #include "$libreplacedir/test/os2_delete.c"],
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| 5 | [libreplace_cv_READDIR_NEEDED=no],
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| 6 | [libreplace_cv_READDIR_NEEDED=yes],
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| 7 | [libreplace_cv_READDIR_NEEDED="assuming not"])
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| 8 | ])
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| 9 |
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| 10 | AC_CHECK_FUNCS(dirfd)
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| 11 | AC_HAVE_DECL(dirfd, [#include <dirent.h>])
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| 12 |
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| 13 | #
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| 14 | # try to replace with getdirentries() if needed
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| 15 | #
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| 16 | if test x"$libreplace_cv_READDIR_NEEDED" = x"yes"; then
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| 17 | AC_CHECK_FUNCS(getdirentries)
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| 18 | AC_VERIFY_C_PROTOTYPE([long telldir(const DIR *dir)],
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| 19 | [
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| 20 | return 0;
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| 21 | ],[
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| 22 | AC_DEFINE(TELLDIR_TAKES_CONST_DIR, 1, [Whether telldir takes a const pointer])
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| 23 | ],[],[
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| 24 | #include <dirent.h>
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| 25 | ])
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| 26 |
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| 27 | AC_VERIFY_C_PROTOTYPE([int seekdir(DIR *dir, long ofs)],
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| 28 | [
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| 29 | return 0;
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| 30 | ],[
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| 31 | AC_DEFINE(SEEKDIR_RETURNS_INT, 1, [Whether seekdir returns an int])
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| 32 | ],[],[
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| 33 | #include <dirent.h>
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| 34 | ])
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| 35 | AC_CACHE_CHECK([for replacing readdir using getdirentries()],libreplace_cv_READDIR_GETDIRENTRIES,[
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| 36 | AC_TRY_RUN([
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| 37 | #define _LIBREPLACE_REPLACE_H
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| 38 | #include "$libreplacedir/repdir_getdirentries.c"
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| 39 | #define test_readdir_os2_delete main
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| 40 | #include "$libreplacedir/test/os2_delete.c"],
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| 41 | [libreplace_cv_READDIR_GETDIRENTRIES=yes],
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| 42 | [libreplace_cv_READDIR_GETDIRENTRIES=no])
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| 43 | ])
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| 44 | fi
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| 45 | if test x"$libreplace_cv_READDIR_GETDIRENTRIES" = x"yes"; then
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| 46 | AC_DEFINE(REPLACE_READDIR,1,[replace readdir])
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| 47 | AC_DEFINE(REPLACE_READDIR_GETDIRENTRIES,1,[replace readdir using getdirentries()])
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| 48 | LIBREPLACEOBJ="${LIBREPLACEOBJ} $libreplacedir/repdir_getdirentries.o"
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| 49 | libreplace_cv_READDIR_NEEDED=no
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| 50 | fi
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| 51 |
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| 52 | #
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| 53 | # try to replace with getdents() if needed
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| 54 | #
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| 55 | if test x"$libreplace_cv_READDIR_NEEDED" = x"yes"; then
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| 56 | AC_CHECK_FUNCS(getdents)
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| 57 | AC_CACHE_CHECK([for replacing readdir using getdents()],libreplace_cv_READDIR_GETDENTS,[
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| 58 | AC_TRY_RUN([
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| 59 | #define _LIBREPLACE_REPLACE_H
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| 60 | #error _donot_use_getdents_replacement_anymore
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| 61 | #include "$libreplacedir/repdir_getdents.c"
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| 62 | #define test_readdir_os2_delete main
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| 63 | #include "$libreplacedir/test/os2_delete.c"],
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| 64 | [libreplace_cv_READDIR_GETDENTS=yes],
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| 65 | [libreplace_cv_READDIR_GETDENTS=no])
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| 66 | ])
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| 67 | fi
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| 68 | if test x"$libreplace_cv_READDIR_GETDENTS" = x"yes"; then
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| 69 | AC_DEFINE(REPLACE_READDIR,1,[replace readdir])
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| 70 | AC_DEFINE(REPLACE_READDIR_GETDENTS,1,[replace readdir using getdents()])
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| 71 | LIBREPLACEOBJ="${LIBREPLACEOBJ} $libreplacedir/repdir_getdents.o"
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| 72 | libreplace_cv_READDIR_NEEDED=no
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| 73 | fi
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| 74 |
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| 75 | AC_MSG_CHECKING([a usable readdir()])
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| 76 | if test x"$libreplace_cv_READDIR_NEEDED" = x"yes"; then
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| 77 | AC_MSG_RESULT(no)
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| 78 | AC_MSG_WARN([the provided readdir() is broken])
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| 79 | else
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| 80 | AC_MSG_RESULT(yes)
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| 81 | fi
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