projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 8424cc97 | 1 | # strchrnul.m4 serial 9 |
| c0c3707f | 2 | dnl Copyright (C) 2003, 2007, 2009-2019 Free Software Foundation, Inc. |
| 8424cc97 SM |
3 | dnl This file is free software; the Free Software Foundation |
| 4 | dnl gives unlimited permission to copy and/or distribute it, | |
| 5 | dnl with or without modifications, as long as this notice is preserved. | |
| 6 | ||
| 7 | AC_DEFUN([gl_FUNC_STRCHRNUL], | |
| 8 | [ | |
| 9 | dnl Persuade glibc <string.h> to declare strchrnul(). | |
| 10 | AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) | |
| 11 | ||
| 12 | AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS]) | |
| 13 | AC_CHECK_FUNCS([strchrnul]) | |
| 14 | if test $ac_cv_func_strchrnul = no; then | |
| 15 | HAVE_STRCHRNUL=0 | |
| 16 | else | |
| 17 | AC_CACHE_CHECK([whether strchrnul works], | |
| 18 | [gl_cv_func_strchrnul_works], | |
| 19 | [AC_RUN_IFELSE([AC_LANG_PROGRAM([[ | |
| 20 | #include <string.h> /* for strchrnul */ | |
| 21 | ]], [[const char *buf = "a"; | |
| 22 | return strchrnul (buf, 'b') != buf + 1; | |
| 23 | ]])], | |
| 24 | [gl_cv_func_strchrnul_works=yes], | |
| 25 | [gl_cv_func_strchrnul_works=no], | |
| 26 | [dnl Cygwin 1.7.9 introduced strchrnul, but it was broken until 1.7.10 | |
| 27 | AC_EGREP_CPP([Lucky user], | |
| 28 | [ | |
| 29 | #if defined __CYGWIN__ | |
| 30 | #include <cygwin/version.h> | |
| 31 | #if CYGWIN_VERSION_DLL_COMBINED > CYGWIN_VERSION_DLL_MAKE_COMBINED (1007, 9) | |
| 32 | Lucky user | |
| 33 | #endif | |
| 34 | #else | |
| 35 | Lucky user | |
| 36 | #endif | |
| 37 | ], | |
| 38 | [gl_cv_func_strchrnul_works="guessing yes"], | |
| 39 | [gl_cv_func_strchrnul_works="guessing no"]) | |
| 40 | ]) | |
| 41 | ]) | |
| 42 | case "$gl_cv_func_strchrnul_works" in | |
| 43 | *yes) ;; | |
| 44 | *) REPLACE_STRCHRNUL=1 ;; | |
| 45 | esac | |
| 46 | fi | |
| 47 | ]) | |
| 48 | ||
| 49 | # Prerequisites of lib/strchrnul.c. | |
| 50 | AC_DEFUN([gl_PREREQ_STRCHRNUL], [:]) |