| From 8e7281d7bebb5e389befe6e9a5afbb7b2ae13ae0 Mon Sep 17 00:00:00 2001 |
| From: Paul Eggert <eggert@cs.ucla.edu> |
| Date: Wed, 17 May 2023 11:50:27 -0700 |
| Subject: [PATCH 24/29] Improve AC_FUNC_MMAP comments |
| |
| * lib/autoconf/functions.m4 (AC_FUNC_MMAP): Add comment. |
| |
| Upstream-Status: Backport |
| Signed-off-by: Khem Raj <raj.khem@gmail.com> |
| --- |
| lib/autoconf/functions.m4 | 2 ++ |
| 1 file changed, 2 insertions(+) |
| |
| diff --git a/lib/autoconf/functions.m4 b/lib/autoconf/functions.m4 |
| index 3d6e4aca8..54d04cc38 100644 |
| --- a/lib/autoconf/functions.m4 |
| +++ b/lib/autoconf/functions.m4 |
| @@ -1311,6 +1311,8 @@ AC_CACHE_CHECK([for working mmap], [ac_cv_func_mmap_fixed_mapped], |
| #include <sys/mman.h> |
| |
| #ifndef getpagesize |
| +/* Prefer sysconf to the legacy getpagesize function, as getpagesize has |
| + been removed from POSIX and is limited to page sizes that fit in 'int'. */ |
| # ifdef _SC_PAGESIZE |
| # define getpagesize() sysconf (_SC_PAGESIZE) |
| # elif defined _SC_PAGE_SIZE |
| -- |
| 2.41.0 |
| |