nexmon – Blame information for rev 1
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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1 | office | 1 | # readlink.m4 serial 11 |
| 2 | dnl Copyright (C) 2003, 2007, 2009-2011 Free Software Foundation, Inc. |
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| 3 | dnl This file is free software; the Free Software Foundation |
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| 4 | dnl gives unlimited permission to copy and/or distribute it, |
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| 5 | dnl with or without modifications, as long as this notice is preserved. |
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| 6 | |||
| 7 | AC_DEFUN([gl_FUNC_READLINK], |
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| 8 | [ |
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| 9 | AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) |
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| 10 | AC_CHECK_FUNCS_ONCE([readlink]) |
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| 11 | if test $ac_cv_func_readlink = no; then |
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| 12 | HAVE_READLINK=0 |
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| 13 | else |
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| 14 | AC_CACHE_CHECK([whether readlink signature is correct], |
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| 15 | [gl_cv_decl_readlink_works], |
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| 16 | [AC_COMPILE_IFELSE( |
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| 17 | [AC_LANG_PROGRAM( |
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| 18 | [[#include <unistd.h> |
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| 19 | /* Cause compilation failure if original declaration has wrong type. */ |
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| 20 | ssize_t readlink (const char *, char *, size_t);]])], |
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| 21 | [gl_cv_decl_readlink_works=yes], [gl_cv_decl_readlink_works=no])]) |
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| 22 | dnl Solaris 9 ignores trailing slash. |
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| 23 | dnl FreeBSD 7.2 dereferences only one level of links with trailing slash. |
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| 24 | AC_CACHE_CHECK([whether readlink handles trailing slash correctly], |
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| 25 | [gl_cv_func_readlink_works], |
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| 26 | [# We have readlink, so assume ln -s works. |
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| 27 | ln -s conftest.no-such conftest.link |
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| 28 | ln -s conftest.link conftest.lnk2 |
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| 29 | AC_RUN_IFELSE( |
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| 30 | [AC_LANG_PROGRAM( |
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| 31 | [[#include <unistd.h> |
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| 32 | ]], [[char buf[20]; |
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| 33 | return readlink ("conftest.lnk2/", buf, sizeof buf) != -1;]])], |
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| 34 | [gl_cv_func_readlink_works=yes], [gl_cv_func_readlink_works=no], |
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| 35 | [gl_cv_func_readlink_works="guessing no"]) |
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| 36 | rm -f conftest.link conftest.lnk2]) |
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| 37 | if test "$gl_cv_func_readlink_works" != yes; then |
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| 38 | AC_DEFINE([READLINK_TRAILING_SLASH_BUG], [1], [Define to 1 if readlink |
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| 39 | fails to recognize a trailing slash.]) |
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| 40 | REPLACE_READLINK=1 |
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| 41 | elif test "$gl_cv_decl_readlink_works" != yes; then |
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| 42 | REPLACE_READLINK=1 |
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| 43 | fi |
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| 44 | fi |
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| 45 | ]) |
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| 46 | |||
| 47 | # Like gl_FUNC_READLINK, except prepare for separate compilation |
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| 48 | # (no REPLACE_READLINK, no AC_LIBOBJ). |
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| 49 | AC_DEFUN([gl_FUNC_READLINK_SEPARATE], |
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| 50 | [ |
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| 51 | AC_CHECK_FUNCS_ONCE([readlink]) |
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| 52 | gl_PREREQ_READLINK |
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| 53 | ]) |
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| 54 | |||
| 55 | # Prerequisites of lib/readlink.c. |
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| 56 | AC_DEFUN([gl_PREREQ_READLINK], |
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| 57 | [ |
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| 58 | : |
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| 59 | ]) |