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-rw-r--r--m4/getpagesize.m449
1 files changed, 49 insertions, 0 deletions
diff --git a/m4/getpagesize.m4 b/m4/getpagesize.m4
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+++ b/m4/getpagesize.m4
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+# getpagesize.m4 serial 10
+dnl Copyright (C) 2002, 2004-2005, 2007, 2009-2022 Free Software Foundation,
+dnl Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_GETPAGESIZE],
+[
+ AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+ AC_REQUIRE([AC_CANONICAL_HOST])
+ gl_CHECK_FUNC_GETPAGESIZE
+ if test $gl_cv_func_getpagesize = no; then
+ HAVE_GETPAGESIZE=0
+ AC_CHECK_HEADERS([OS.h])
+ if test $ac_cv_header_OS_h = yes; then
+ HAVE_OS_H=1
+ fi
+ AC_CHECK_HEADERS([sys/param.h])
+ if test $ac_cv_header_sys_param_h = yes; then
+ HAVE_SYS_PARAM_H=1
+ fi
+ fi
+ case "$host_os" in
+ mingw*)
+ REPLACE_GETPAGESIZE=1
+ ;;
+ esac
+ dnl Also check whether it's declared.
+ dnl mingw has getpagesize() in libgcc.a but doesn't declare it.
+ AC_CHECK_DECL([getpagesize], , [HAVE_DECL_GETPAGESIZE=0])
+])
+
+dnl Tests whether the function getpagesize() exists.
+dnl Sets gl_cv_func_getpagesize.
+AC_DEFUN([gl_CHECK_FUNC_GETPAGESIZE],
+[
+ dnl We can't use AC_CHECK_FUNC here, because getpagesize() is defined as a
+ dnl static inline function when compiling for Android 4.4 or older.
+ AC_CACHE_CHECK([for getpagesize], [gl_cv_func_getpagesize],
+ [AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include <unistd.h>]],
+ [[return getpagesize();]])
+ ],
+ [gl_cv_func_getpagesize=yes],
+ [gl_cv_func_getpagesize=no])
+ ])
+])