projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| c0c3707f | 1 | #serial 12 |
| 6ec2e0f5 | 2 | |
| c0c3707f | 3 | # Copyright (C) 2005-2007, 2009-2019 Free Software Foundation, Inc. |
| 6ec2e0f5 SDJ |
4 | # |
| 5 | # This file is free software; the Free Software Foundation | |
| 6 | # gives unlimited permission to copy and/or distribute it, | |
| 7 | # with or without modifications, as long as this notice is preserved. | |
| 8 | ||
| 9 | dnl From Derek Price | |
| 10 | dnl | |
| 11 | dnl Provide getlogin_r when the system lacks it. | |
| 12 | dnl | |
| 13 | ||
| 14 | AC_DEFUN([gl_FUNC_GETLOGIN_R], | |
| 15 | [ | |
| 16 | AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) | |
| 17 | ||
| 18 | dnl Persuade glibc <unistd.h> to declare getlogin_r(). | |
| 19 | dnl Persuade Solaris <unistd.h> to provide the POSIX compliant declaration of | |
| 20 | dnl getlogin_r(). | |
| 21 | AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) | |
| 22 | ||
| 23 | AC_CHECK_DECLS_ONCE([getlogin_r]) | |
| 24 | if test $ac_cv_have_decl_getlogin_r = no; then | |
| 25 | HAVE_DECL_GETLOGIN_R=0 | |
| 26 | fi | |
| 27 | ||
| 28 | AC_CHECK_FUNCS_ONCE([getlogin_r]) | |
| 29 | if test $ac_cv_func_getlogin_r = no; then | |
| 30 | HAVE_GETLOGIN_R=0 | |
| 31 | else | |
| 32 | HAVE_GETLOGIN_R=1 | |
| c0c3707f CB |
33 | dnl On Mac OS X 10.12 and OSF/1 5.1, getlogin_r returns a truncated result |
| 34 | dnl if the buffer is not large enough. | |
| 6ec2e0f5 SDJ |
35 | AC_REQUIRE([AC_CANONICAL_HOST]) |
| 36 | AC_CACHE_CHECK([whether getlogin_r works with small buffers], | |
| 37 | [gl_cv_func_getlogin_r_works], | |
| 38 | [ | |
| 39 | dnl Initial guess, used when cross-compiling. | |
| 40 | changequote(,)dnl | |
| 41 | case "$host_os" in | |
| c0c3707f CB |
42 | # Guess no on Mac OS X, OSF/1. |
| 43 | darwin* | osf*) gl_cv_func_getlogin_r_works="guessing no" ;; | |
| 44 | # Guess yes otherwise. | |
| 45 | *) gl_cv_func_getlogin_r_works="guessing yes" ;; | |
| 6ec2e0f5 SDJ |
46 | esac |
| 47 | changequote([,])dnl | |
| 48 | AC_RUN_IFELSE( | |
| 49 | [AC_LANG_SOURCE([[ | |
| 50 | #include <stddef.h> | |
| c0c3707f | 51 | #include <string.h> |
| 6ec2e0f5 SDJ |
52 | #include <unistd.h> |
| 53 | #if !HAVE_DECL_GETLOGIN_R | |
| 54 | extern | |
| 55 | # ifdef __cplusplus | |
| 56 | "C" | |
| 57 | # endif | |
| 58 | int getlogin_r (char *, size_t); | |
| 59 | #endif | |
| 60 | int | |
| 61 | main (void) | |
| 62 | { | |
| 63 | int result = 0; | |
| 64 | char buf[100]; | |
| 65 | ||
| 66 | if (getlogin_r (buf, 0) == 0) | |
| c0c3707f | 67 | result |= 1; |
| 6ec2e0f5 | 68 | if (getlogin_r (buf, 1) == 0) |
| c0c3707f CB |
69 | result |= 2; |
| 70 | if (getlogin_r (buf, 100) == 0) | |
| 71 | { | |
| 72 | size_t n = strlen (buf); | |
| 73 | if (getlogin_r (buf, n) == 0) | |
| 74 | result |= 4; | |
| 75 | } | |
| 6ec2e0f5 SDJ |
76 | return result; |
| 77 | }]])], | |
| 78 | [gl_cv_func_getlogin_r_works=yes], | |
| c0c3707f | 79 | [gl_cv_func_getlogin_r_works=no], |
| 6ec2e0f5 SDJ |
80 | [:]) |
| 81 | ]) | |
| 82 | case "$gl_cv_func_getlogin_r_works" in | |
| 83 | *yes) ;; | |
| 84 | *) REPLACE_GETLOGIN_R=1 ;; | |
| 85 | esac | |
| 86 | fi | |
| 87 | ]) | |
| 88 | ||
| 89 | AC_DEFUN([gl_PREREQ_GETLOGIN_R], | |
| 90 | [ | |
| 91 | AC_CHECK_DECLS_ONCE([getlogin]) | |
| 92 | ]) |