From 71b5eab6829671cad72869fa0a33fbb1ef6ff447 Mon Sep 17 00:00:00 2001
From: Aaron Stone <aaron@serendipity.cx>
Date: Sun, 2 Jul 2017 18:54:49 -0400
Subject: [PATCH 1/2] Add ifdefs for MySQL 5.1 without
 MYSQL_ENABLE_CLEARTEXT_PLUGIN

---
 ext/mysql2/client.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/ext/mysql2/client.c b/ext/mysql2/client.c
index 97231ff17..05fd07032 100644
--- a/ext/mysql2/client.c
+++ b/ext/mysql2/client.c
@@ -903,10 +903,12 @@ static VALUE _mysql_client_options(VALUE self, int opt, VALUE value) {
       retval  = charval;
       break;
 
+#ifdef MYSQL_ENABLE_CLEARTEXT_PLUGIN
     case MYSQL_ENABLE_CLEARTEXT_PLUGIN:
       boolval = (value == Qfalse ? 0 : 1);
       retval = &boolval;
       break;
+#endif
 
     default:
       return Qfalse;
@@ -1326,7 +1328,11 @@ static VALUE set_init_command(VALUE self, VALUE value) {
 }
 
 static VALUE set_enable_cleartext_plugin(VALUE self, VALUE value) {
+#ifdef MYSQL_ENABLE_CLEARTEXT_PLUGIN
   return _mysql_client_options(self, MYSQL_ENABLE_CLEARTEXT_PLUGIN, value);
+#else
+  rb_raise(cMysql2Error, "enable-cleartext-plugin is not available, you may need a newer MySQL client library");
+#endif
 }
 
 static VALUE initialize_ext(VALUE self) {

From f56638413b3ac0cf869cd16357e5d84f49ca0934 Mon Sep 17 00:00:00 2001
From: Aaron Stone <aaron@serendipity.cx>
Date: Mon, 3 Jul 2017 11:06:21 -0400
Subject: [PATCH 2/2] Travis CI add Percona MySQL 5.1 to the matrix

---
 .travis.yml        |  9 +++++++++
 .travis_mysql51.sh | 11 +++++++++++
 .travis_setup.sh   |  5 +++++
 3 files changed, 25 insertions(+)
 create mode 100644 .travis_mysql51.sh

diff --git a/.travis.yml b/.travis.yml
index a5f4ae753..07fb7e175 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -67,6 +67,12 @@ matrix:
         mariadb: 10.2
         hosts:
           - mysql2gem.example.com
+    - rvm: 2.0.0
+      env: DB=mysql51
+      dist: precise
+      addons:
+        hosts:
+          - mysql2gem.example.com
     - rvm: 2.0.0
       env: DB=mysql55
       dist: precise
@@ -105,3 +111,6 @@ matrix:
     - os: osx
       rvm: system
       env: DB=mysql56
+    - rvm: 2.0.0
+      env: DB=mysql51
+      dist: precise
diff --git a/.travis_mysql51.sh b/.travis_mysql51.sh
new file mode 100644
index 000000000..bc3da3dd6
--- /dev/null
+++ b/.travis_mysql51.sh
@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+
+set -eux
+
+apt-get purge -qq '^mysql*' '^libmysql*'
+rm -fr /etc/mysql
+rm -fr /var/lib/mysql
+apt-key adv --keyserver keys.gnupg.net --recv-keys 8507EFA5
+add-apt-repository 'deb http://repo.percona.com/apt precise main'
+apt-get update -qq
+apt-get install -qq percona-server-server-5.1 percona-server-client-5.1 libmysqlclient16-dev
diff --git a/.travis_setup.sh b/.travis_setup.sh
index ffe5295b5..fe114c68e 100644
--- a/.travis_setup.sh
+++ b/.travis_setup.sh
@@ -2,6 +2,11 @@
 
 set -eux
 
+# Install MySQL 5.1 if DB=mysql51
+if [[ -n ${DB-} && x$DB =~ ^xmysql51 ]]; then
+  sudo bash .travis_mysql51.sh
+fi
+
 # Install MySQL 5.7 if DB=mysql57
 if [[ -n ${DB-} && x$DB =~ ^xmysql57 ]]; then
   sudo bash .travis_mysql57.sh