From: Peter Kokot <peterkokot@gmail.com>
Date: Mon, 3 Sep 2018 19:35:01 +0000 (+0200)
Subject: Remove AC_FUNC_MEMCMP
X-Git-Tag: php-7.4.0alpha1~1996
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=6db3c105f2937cb01ced82c3943ff41b5176315a;p=php

Remove AC_FUNC_MEMCMP

Autoconf 2.59d (released in 2006) [1] started promoting several macros
as not relevant for newer systems anymore, including the `AC_FUNC_MEMCMP`.

On some old systems such as SunOS 4.1.3 (EOL in 2003) and NeXT x86
OpenStep (discontinued) the `memcmp` function wasn't present or it
didn't work properly. [2]

On current systems including at least Solaris 10+ this check is not
relevant anymore.

Refs:
[1] http://git.savannah.gnu.org/cgit/autoconf.git/tree/NEWS
[2] https://www.gnu.org/software/autoconf/manual/autoconf-2.69/autoconf.html
---

diff --git a/Zend/Zend.m4 b/Zend/Zend.m4
index acf0080cc9..1f753de6e2 100644
--- a/Zend/Zend.m4
+++ b/Zend/Zend.m4
@@ -92,7 +92,6 @@ LIBZEND_CHECK_INT_TYPE(int32_t)
 LIBZEND_CHECK_INT_TYPE(uint32_t)
 
 dnl Checks for library functions.
-AC_FUNC_MEMCMP
 AC_FUNC_ALLOCA
 AC_CHECK_FUNCS(memcpy strdup getpid kill strtod strtol finite fpclass sigsetjmp)
 AC_ZEND_BROKEN_SPRINTF
diff --git a/ext/mbstring/config.m4 b/ext/mbstring/config.m4
index a1a9f21bfe..d97ed8821a 100644
--- a/ext/mbstring/config.m4
+++ b/ext/mbstring/config.m4
@@ -99,7 +99,6 @@ int main() { return foo(10, "", 3.14); }
       AC_CHECK_SIZEOF(short, 2)
       AC_CHECK_SIZEOF(long, 4)
       AC_FUNC_ALLOCA
-      AC_FUNC_MEMCMP
       AC_CHECK_HEADER([stdarg.h], [
         AC_DEFINE([HAVE_STDARG_PROTOTYPES], [1], [Define to 1 if you have the <stdarg.h> header file.])
       ], [])