81 lines
2.3 KiB
Text
81 lines
2.3 KiB
Text
# random.m4
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# serial 8
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dnl Copyright (C) 2012-2025 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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dnl This file is offered as-is, without any warranty.
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AC_DEFUN([gl_FUNC_RANDOM],
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[
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AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
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AC_REQUIRE([AC_CANONICAL_HOST])
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dnl We can't use AC_CHECK_FUNC here, because random() is defined as a
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dnl static inline function when compiling for Android 4.4 or older.
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AC_CACHE_CHECK([for random], [gl_cv_func_random],
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[AC_LINK_IFELSE(
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[AC_LANG_PROGRAM(
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[[#include <stdlib.h>]],
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[[return random() == 0;]])
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],
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[gl_cv_func_random=yes],
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[gl_cv_func_random=no])
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])
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gl_CHECK_FUNCS_ANDROID([initstate], [[#include <stdlib.h>]])
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gl_CHECK_FUNCS_ANDROID([setstate], [[#include <stdlib.h>]])
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if test $gl_cv_func_random = no; then
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HAVE_RANDOM=0
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HAVE_INITSTATE=0
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HAVE_SETSTATE=0
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else
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if test $ac_cv_func_initstate = no; then
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HAVE_INITSTATE=0
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fi
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if test $ac_cv_func_setstate = no; then
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HAVE_SETSTATE=0
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fi
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fi
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if test $HAVE_INITSTATE = 0; then
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case "$gl_cv_onwards_func_initstate" in
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future*) REPLACE_INITSTATE=1 ;;
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esac
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fi
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if test $HAVE_SETSTATE = 0; then
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case "$gl_cv_onwards_func_setstate" in
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future*) REPLACE_SETSTATE=1 ;;
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esac
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fi
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dnl On several platforms, random() is not multithread-safe.
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if test $ac_cv_func_initstate = no || test $ac_cv_func_setstate = no \
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|| case "$host_os" in \
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darwin* | freebsd* | solaris* | cygwin* | haiku*) true ;; \
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*) false ;; \
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esac
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then
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dnl In order to define initstate or setstate, we need to define all the
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dnl functions at once.
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REPLACE_RANDOM=1
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if test $ac_cv_func_initstate = yes; then
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REPLACE_INITSTATE=1
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fi
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if test $ac_cv_func_setstate = yes; then
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REPLACE_SETSTATE=1
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fi
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fi
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AC_CHECK_DECLS_ONCE([initstate])
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if test $ac_cv_have_decl_initstate = no; then
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HAVE_DECL_INITSTATE=0
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fi
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AC_CHECK_DECLS_ONCE([setstate])
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if test $ac_cv_have_decl_setstate = no; then
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HAVE_DECL_SETSTATE=0
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fi
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])
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# Prerequisites of lib/random.c.
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AC_DEFUN([gl_PREREQ_RANDOM], [
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:
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])
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