From ee4295b4ce421003c2e1d2af98066826deb23319 Mon Sep 17 00:00:00 2001
From: Arjen de Korte <build+github@de-korte.org>
Date: Mon, 25 Nov 2019 23:54:49 +0100
Subject: [PATCH] Fix bug #78823: add zlib library to mysqlnd

The problem is newer binutils will no longer default to --copy-dt-needed-entries but use --no-copy-dt-needed-entries instead. So all libraries needed *must* be provided.

Workarounds (either one works)
1) Add "-Wl,--copy-dt-needed-entries" to LDFLAGS to bring back the old behavior of the linker
2) Add "-lz" to list of libraries to be added

In "ext/mysqlnd/mysqlnd_protocol_frame_codec.c" when the "zlib.h" header is included should also trigger adding '-lz' to the list of libraries.
---
 NEWS                   | 3 +++
 ext/mysqlnd/config9.m4 | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/NEWS b/NEWS
index 82f20812c01..8ae025b8e46 100644
--- a/NEWS
+++ b/NEWS
@@ -21,6 +21,9 @@ PHP                                                                        NEWS
     (Maksim Nikulin)
   . Fixed bug #78889 (php-fpm service fails to start). (Jakub Zelenka)
 
+- Mysqlnd:
+  . Fixed bug #78823 (ZLIB_LIBS not added to EXTRA_LIBS). (Arjen de Korte)
+
 - OPcache:
   . Fixed $x = (bool)$x; with opcache (should emit undeclared variable notice).
     (Tyson Andre)
diff --git a/ext/mysqlnd/config9.m4 b/ext/mysqlnd/config9.m4
index 4084c7250b7..5c01ed762f1 100644
--- a/ext/mysqlnd/config9.m4
+++ b/ext/mysqlnd/config9.m4
@@ -24,6 +24,9 @@ if test "$PHP_MYSQLND" != "no" || test "$PHP_MYSQLND_ENABLED" = "yes"; then
 
 
   if test "$PHP_MYSQLND_COMPRESSION_SUPPORT" != "no"; then
+    PKG_CHECK_MODULES([ZLIB], [zlib])
+    PHP_EVAL_LIBLINE($ZLIB_LIBS, MYSQLND_SHARED_LIBADD)
+    PHP_EVAL_INCLINE($ZLIB_CFLAGS)
     AC_DEFINE([MYSQLND_COMPRESSION_WANTED], 1, [Enable compressed protocol support])
   fi