projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 698be2d8 CB |
1 | # getrandom.m4 serial 6 |
| 2 | dnl Copyright 2020 Free Software Foundation, Inc. | |
| 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 | dnl Written by Paul Eggert. | |
| 8 | ||
| 9 | AC_DEFUN([gl_FUNC_GETRANDOM], | |
| 10 | [ | |
| 11 | AC_REQUIRE([gl_SYS_RANDOM_H_DEFAULTS]) | |
| 12 | AC_CHECK_FUNCS_ONCE([getrandom]) | |
| 13 | if test "$ac_cv_func_getrandom" != yes; then | |
| 14 | HAVE_GETRANDOM=0 | |
| 15 | else | |
| 16 | dnl On Solaris 11.4 the return type is 'int', not 'ssize_t'. | |
| 17 | AC_CACHE_CHECK([whether getrandom is compatible with its GNU+BSD signature], | |
| 18 | [gl_cv_func_getrandom_ok], | |
| 19 | [AC_COMPILE_IFELSE( | |
| 20 | [AC_LANG_PROGRAM( | |
| 21 | [[/* Additional includes are needed before <sys/random.h> on Mac OS X. */ | |
| 22 | #include <sys/types.h> | |
| 23 | #include <stdlib.h> | |
| 24 | #include <sys/random.h> | |
| 25 | ssize_t getrandom (void *, size_t, unsigned int); | |
| 26 | ]], | |
| 27 | [[]]) | |
| 28 | ], | |
| 29 | [gl_cv_func_getrandom_ok=yes], | |
| 30 | [gl_cv_func_getrandom_ok=no]) | |
| 31 | ]) | |
| 32 | if test $gl_cv_func_getrandom_ok = no; then | |
| 33 | REPLACE_GETRANDOM=1 | |
| 34 | fi | |
| 35 | fi | |
| 36 | ||
| 37 | case "$host_os" in | |
| 38 | mingw*) | |
| 39 | AC_CHECK_HEADERS([bcrypt.h]) | |
| 40 | AC_CACHE_CHECK([whether the bcrypt library is guaranteed to be present], | |
| 41 | [gl_cv_lib_assume_bcrypt], | |
| 42 | [AC_COMPILE_IFELSE( | |
| 43 | [AC_LANG_PROGRAM( | |
| 44 | [[#include <windows.h>]], | |
| 45 | [[#if !(_WIN32_WINNT >= _WIN32_WINNT_WIN7) | |
| 46 | cannot assume it | |
| 47 | #endif | |
| 48 | ]]) | |
| 49 | ], | |
| 50 | [gl_cv_lib_assume_bcrypt=yes], | |
| 51 | [gl_cv_lib_assume_bcrypt=no]) | |
| 52 | ]) | |
| 53 | if test $gl_cv_lib_assume_bcrypt = yes; then | |
| 54 | AC_DEFINE([HAVE_LIB_BCRYPT], [1], | |
| 55 | [Define to 1 if the bcrypt library is guaranteed to be present.]) | |
| 56 | LIB_GETRANDOM='-lbcrypt' | |
| 57 | else | |
| 58 | LIB_GETRANDOM='-ladvapi32' | |
| 59 | fi | |
| 60 | ;; | |
| 61 | *) | |
| 62 | LIB_GETRANDOM= ;; | |
| 63 | esac | |
| 64 | AC_SUBST([LIB_GETRANDOM]) | |
| 65 | ]) |