| 1 | # getpagesize.m4 serial 10
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| 2 | dnl Copyright (C) 2002, 2004-2005, 2007, 2009-2021 Free Software Foundation,
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| 3 | dnl Inc.
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| 4 | dnl This file is free software; the Free Software Foundation
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| 5 | dnl gives unlimited permission to copy and/or distribute it,
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| 6 | dnl with or without modifications, as long as this notice is preserved.
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| 7 |
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| 8 | AC_DEFUN([gl_FUNC_GETPAGESIZE],
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| 9 | [
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| 10 | AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
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| 11 | AC_REQUIRE([AC_CANONICAL_HOST])
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| 12 | gl_CHECK_FUNC_GETPAGESIZE
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| 13 | if test $gl_cv_func_getpagesize = no; then
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| 14 | HAVE_GETPAGESIZE=0
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| 15 | AC_CHECK_HEADERS([OS.h])
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| 16 | if test $ac_cv_header_OS_h = yes; then
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| 17 | HAVE_OS_H=1
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| 18 | fi
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| 19 | AC_CHECK_HEADERS([sys/param.h])
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| 20 | if test $ac_cv_header_sys_param_h = yes; then
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| 21 | HAVE_SYS_PARAM_H=1
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| 22 | fi
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| 23 | fi
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| 24 | case "$host_os" in
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| 25 | mingw*)
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| 26 | REPLACE_GETPAGESIZE=1
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| 27 | ;;
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| 28 | esac
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| 29 | dnl Also check whether it's declared.
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| 30 | dnl mingw has getpagesize() in libgcc.a but doesn't declare it.
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| 31 | AC_CHECK_DECL([getpagesize], , [HAVE_DECL_GETPAGESIZE=0])
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| 32 | ])
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| 33 |
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| 34 | dnl Tests whether the function getpagesize() exists.
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| 35 | dnl Sets gl_cv_func_getpagesize.
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| 36 | AC_DEFUN([gl_CHECK_FUNC_GETPAGESIZE],
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| 37 | [
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| 38 | dnl We can't use AC_CHECK_FUNC here, because getpagesize() is defined as a
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| 39 | dnl static inline function when compiling for Android 4.4 or older.
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| 40 | AC_CACHE_CHECK([for getpagesize], [gl_cv_func_getpagesize],
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| 41 | [AC_LINK_IFELSE(
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| 42 | [AC_LANG_PROGRAM(
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| 43 | [[#include <unistd.h>]],
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| 44 | [[return getpagesize();]])
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| 45 | ],
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| 46 | [gl_cv_func_getpagesize=yes],
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| 47 | [gl_cv_func_getpagesize=no])
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| 48 | ])
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| 49 | ])
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