nexmon – Blame information for rev 1
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1 | office | 1 | # Enable large files on systems where this is not the default. |
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3 | # Copyright 1992-1996, 1998-2011 Free Software Foundation, Inc. |
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4 | # This file is free software; the Free Software Foundation |
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5 | # gives unlimited permission to copy and/or distribute it, |
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6 | # with or without modifications, as long as this notice is preserved. |
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7 | |||
8 | # The following implementation works around a problem in autoconf <= 2.68; |
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9 | # AC_SYS_LARGEFILE does not configure for large inodes on Mac OS X 10.5. |
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10 | m4_version_prereq([2.69], [] ,[ |
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11 | |||
12 | # _AC_SYS_LARGEFILE_TEST_INCLUDES |
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13 | # ------------------------------- |
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14 | m4_define([_AC_SYS_LARGEFILE_TEST_INCLUDES], |
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15 | [@%:@include <sys/types.h> |
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16 | /* Check that off_t can represent 2**63 - 1 correctly. |
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17 | We can't simply define LARGE_OFF_T to be 9223372036854775807, |
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18 | since some C++ compilers masquerading as C compilers |
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19 | incorrectly reject 9223372036854775807. */ |
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20 | @%:@define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62)) |
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21 | int off_t_is_large[[(LARGE_OFF_T % 2147483629 == 721 |
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22 | && LARGE_OFF_T % 2147483647 == 1) |
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23 | ? 1 : -1]];[]dnl |
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24 | ]) |
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25 | |||
26 | |||
27 | # _AC_SYS_LARGEFILE_MACRO_VALUE(C-MACRO, VALUE, |
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28 | # CACHE-VAR, |
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29 | # DESCRIPTION, |
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30 | # PROLOGUE, [FUNCTION-BODY]) |
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31 | # -------------------------------------------------------- |
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32 | m4_define([_AC_SYS_LARGEFILE_MACRO_VALUE], |
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33 | [AC_CACHE_CHECK([for $1 value needed for large files], [$3], |
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34 | [while :; do |
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35 | m4_ifval([$6], [AC_LINK_IFELSE], [AC_COMPILE_IFELSE])( |
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36 | [AC_LANG_PROGRAM([$5], [$6])], |
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37 | [$3=no; break]) |
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38 | m4_ifval([$6], [AC_LINK_IFELSE], [AC_COMPILE_IFELSE])( |
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39 | [AC_LANG_PROGRAM([@%:@define $1 $2 |
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40 | $5], [$6])], |
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41 | [$3=$2; break]) |
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42 | $3=unknown |
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43 | break |
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44 | done]) |
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45 | case $$3 in #( |
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46 | no | unknown) ;; |
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47 | *) AC_DEFINE_UNQUOTED([$1], [$$3], [$4]);; |
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48 | esac |
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49 | rm -rf conftest*[]dnl |
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50 | ])# _AC_SYS_LARGEFILE_MACRO_VALUE |
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51 | |||
52 | |||
53 | # AC_SYS_LARGEFILE |
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54 | # ---------------- |
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55 | # By default, many hosts won't let programs access large files; |
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56 | # one must use special compiler options to get large-file access to work. |
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57 | # For more details about this brain damage please see: |
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58 | # http://www.unix-systems.org/version2/whatsnew/lfs20mar.html |
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59 | AC_DEFUN([AC_SYS_LARGEFILE], |
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60 | [AC_ARG_ENABLE(largefile, |
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61 | [ --disable-largefile omit support for large files]) |
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62 | if test "$enable_largefile" != no; then |
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63 | |||
64 | AC_CACHE_CHECK([for special C compiler options needed for large files], |
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65 | ac_cv_sys_largefile_CC, |
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66 | [ac_cv_sys_largefile_CC=no |
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67 | if test "$GCC" != yes; then |
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68 | ac_save_CC=$CC |
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69 | while :; do |
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70 | # IRIX 6.2 and later do not support large files by default, |
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71 | # so use the C compiler's -n32 option if that helps. |
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72 | AC_LANG_CONFTEST([AC_LANG_PROGRAM([_AC_SYS_LARGEFILE_TEST_INCLUDES])]) |
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73 | AC_COMPILE_IFELSE([], [break]) |
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74 | CC="$CC -n32" |
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75 | AC_COMPILE_IFELSE([], [ac_cv_sys_largefile_CC=' -n32'; break]) |
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76 | break |
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77 | done |
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78 | CC=$ac_save_CC |
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79 | rm -f conftest.$ac_ext |
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80 | fi]) |
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81 | if test "$ac_cv_sys_largefile_CC" != no; then |
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82 | CC=$CC$ac_cv_sys_largefile_CC |
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83 | fi |
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84 | |||
85 | _AC_SYS_LARGEFILE_MACRO_VALUE(_FILE_OFFSET_BITS, 64, |
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86 | ac_cv_sys_file_offset_bits, |
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87 | [Number of bits in a file offset, on hosts where this is settable.], |
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88 | [_AC_SYS_LARGEFILE_TEST_INCLUDES]) |
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89 | if test $ac_cv_sys_file_offset_bits = unknown; then |
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90 | _AC_SYS_LARGEFILE_MACRO_VALUE(_LARGE_FILES, 1, |
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91 | ac_cv_sys_large_files, |
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92 | [Define for large files, on AIX-style hosts.], |
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93 | [_AC_SYS_LARGEFILE_TEST_INCLUDES]) |
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94 | fi |
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95 | |||
96 | AH_VERBATIM([_DARWIN_USE_64_BIT_INODE], |
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97 | [/* Enable large inode numbers on Mac OS X. */ |
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98 | #ifndef _DARWIN_USE_64_BIT_INODE |
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99 | # define _DARWIN_USE_64_BIT_INODE 1 |
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100 | #endif]) |
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101 | fi |
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102 | ])# AC_SYS_LARGEFILE |
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103 | |||
104 | ])# m4_version_prereq 2.69 |