installation error in MariaDB 10.2.6

[kim612]

Hi.
macOS Homebrew started to distribute MariaDB 10.2.6 recently.
But when I installed mysql2 for this version, I found some errors.
MariaDB 10.1.X is still ok, so I changed it and it has no problem.

$ gem install mysql2 -- --with-mysql-config=/usr/local/bin/mysql_config
Building native extensions with: '--with-mysql-config=/usr/local/bin/mysql_config'
This could take a while...
ERROR: Error installing mysql2:
ERROR: Failed to build gem native extension.

current directory: /usr/local/lib/ruby/gems/2.4.0/gems/mysql2-0.4.6/ext/mysql2

/usr/local/opt/ruby/bin/ruby -r ./siteconf20170525-2285-kb0wzp.rb extconf.rb --with-mysql-config=/usr/local/bin/mysql_config
checking for rb_absint_size()... yes
checking for rb_absint_singlebit_p()... yes
checking for ruby/thread.h... yes
checking for rb_thread_call_without_gvl() in ruby/thread.h... yes
checking for rb_thread_blocking_region()... no
checking for rb_wait_for_single_fd()... yes
checking for rb_hash_dup()... yes
checking for rb_intern3()... yes
checking for rb_big_cmp()... yes

Using mysql_config at /usr/local/bin/mysql_config

checking for mysql.h... yes
checking for SSL_MODE_DISABLED in mysql.h... no
checking for MYSQL_OPT_SSL_ENFORCE in mysql.h... yes
checking for errmsg.h... yes
checking for mysqld_error.h... yes

Setting rpath to /usr/local/Cellar/mariadb/10.2.6/lib

creating Makefile

current directory: /usr/local/lib/ruby/gems/2.4.0/gems/mysql2-0.4.6/ext/mysql2
make "DESTDIR=" clean

current directory: /usr/local/lib/ruby/gems/2.4.0/gems/mysql2-0.4.6/ext/mysql2
make "DESTDIR="
compiling client.c
client.c:138:1: warning: control may reach end of non-void function [-Wreturn-type]
}
^
client.c:923:32: error: use of undeclared identifier 'MYSQL_SERVER_VERSION'
header_version = rb_str_new2(MYSQL_LINK_VERSION);
^
client.c:53:30: note: expanded from macro 'MYSQL_LINK_VERSION'
#define MYSQL_LINK_VERSION MYSQL_SERVER_VERSION
^
client.c:923:32: error: use of undeclared identifier 'MYSQL_SERVER_VERSION'
client.c:53:30: note: expanded from macro 'MYSQL_LINK_VERSION'
#define MYSQL_LINK_VERSION MYSQL_SERVER_VERSION
^
client.c:923:32: error: use of undeclared identifier 'MYSQL_SERVER_VERSION'
client.c:53:30: note: expanded from macro 'MYSQL_LINK_VERSION'
#define MYSQL_LINK_VERSION MYSQL_SERVER_VERSION
^
client.c:923:32: error: use of undeclared identifier 'MYSQL_SERVER_VERSION'
client.c:53:30: note: expanded from macro 'MYSQL_LINK_VERSION'
#define MYSQL_LINK_VERSION MYSQL_SERVER_VERSION
^
client.c:923:18: error: assigning to 'VALUE' (aka 'unsigned long') from incompatible type 'void'
header_version = rb_str_new2(MYSQL_LINK_VERSION);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 warning and 5 errors generated.
make: *** [client.o] Error 1

make failed, exit code 2

Gem files will remain installed in /usr/local/lib/ruby/gems/2.4.0/gems/mysql2-0.4.6 for inspection.
Results logged to /usr/local/lib/ruby/gems/2.4.0/extensions/x86_64-darwin-16/2.4.0/mysql2-0.4.6/gem_make.out

Thank you!

[sodabrew]

I wonder if they've renamed this macro in MariaDB 10.2. I'll take a look, thanks for reporting this!

[otzy007]

I'm having the same isssue :(

[charlietag]

Same here (CentOS 7.3 , Ruby 2.3.1 , gem 2.6.12)
-------------------------------ERROR MSG------------------------------

root@test ~
#  gem install mysql2 -v '0.4.6'
Building native extensions.  This could take a while...
ERROR:  Error installing mysql2:
        ERROR: Failed to build gem native extension.

    current directory: /usr/local/lib/ruby/gems/2.3.0/gems/mysql2-0.4.6/ext/mysql2
/usr/local/bin/ruby -r ./siteconf20170525-9879-1edbunk.rb extconf.rb
checking for rb_absint_size()... yes
checking for rb_absint_singlebit_p()... yes
checking for ruby/thread.h... yes
checking for rb_thread_call_without_gvl() in ruby/thread.h... yes
checking for rb_thread_blocking_region()... no
checking for rb_wait_for_single_fd()... yes
checking for rb_hash_dup()... yes
checking for rb_intern3()... yes
checking for rb_big_cmp()... yes
-----
Using mysql_config at /bin/mysql_config
-----
checking for mysql.h... yes
checking for SSL_MODE_DISABLED in mysql.h... no
checking for MYSQL_OPT_SSL_ENFORCE in mysql.h... yes
checking for errmsg.h... yes
checking for mysqld_error.h... yes
-----
Setting libpath to /usr/lib64
-----
creating Makefile

current directory: /usr/local/lib/ruby/gems/2.3.0/gems/mysql2-0.4.6/ext/mysql2
make "DESTDIR=" clean

current directory: /usr/local/lib/ruby/gems/2.3.0/gems/mysql2-0.4.6/ext/mysql2
make "DESTDIR="
compiling client.c
In file included from ./mysql2_ext.h:39:0,
                 from client.c:1:
client.c: In function ‘rb_set_ssl_mode_option’:
./client.h:57:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   mysql_client_wrapper *wrapper; \
   ^
client.c:110:3: note: in expansion of macro ‘GET_CLIENT’
   GET_CLIENT(self);
   ^
client.c:111:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   int val = NUM2INT( setting );
   ^
In file included from /usr/local/include/ruby-2.3.0/ruby/ruby.h:1992:0,
                 from /usr/local/include/ruby-2.3.0/ruby.h:33,
                 from ./mysql2_ext.h:10,
                 from client.c:1:
client.c: In function ‘rb_mysql_client_info’:
client.c:53:30: error: ‘MYSQL_SERVER_VERSION’ undeclared (first use in this function)
   #define MYSQL_LINK_VERSION MYSQL_SERVER_VERSION
                              ^
/usr/local/include/ruby-2.3.0/ruby/intern.h:805:27: note: in definition of macro ‘rb_str_new_cstr’
     (__builtin_constant_p(str)) ?  \
                           ^
client.c:923:32: note: in expansion of macro ‘MYSQL_LINK_VERSION’
   header_version = rb_str_new2(MYSQL_LINK_VERSION);
                                ^
client.c:53:30: note: each undeclared identifier is reported only once for each function it appears in
   #define MYSQL_LINK_VERSION MYSQL_SERVER_VERSION
                              ^
/usr/local/include/ruby-2.3.0/ruby/intern.h:805:27: note: in definition of macro ‘rb_str_new_cstr’
     (__builtin_constant_p(str)) ?  \
                           ^
client.c:923:32: note: in expansion of macro ‘MYSQL_LINK_VERSION’
   header_version = rb_str_new2(MYSQL_LINK_VERSION);
                                ^
client.c: In function ‘rb_set_ssl_mode_option’:
client.c:138:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
make: *** [client.o] Error 1

make failed, exit code 2

Gem files will remain installed in /usr/local/lib/ruby/gems/2.3.0/gems/mysql2-0.4.6 for inspection.
Results logged to /usr/local/lib/ruby/gems/2.3.0/extensions/x86_64-linux/2.3.0-static/mysql2-0.4.6/gem_make.out

-------------------------------ERROR MSG------------------------------

[KarlAmort]

Yeah–me too, and I'd expect a lot more people will run into this once the long weekend in the US ends.

FWIW I tried and added #include <mysql_version.h> to /ext/client.c. This actually fixed the compilation issue, but any attempt to connect to a database from ruby results in a segfault (log attached)
ruby.crash.txt

. Sorry for not being of more help, my C is weak. I've also now tried it with MariaDB 10.2.5, so the problem is not in the switch from 10.1.x->10.2.x, but in the point release 10.2.5->10.2.6

Here's how to install the previous (working) mariaDB 10.2.5 or 10.2.22 (EDIT: see below for an easier method by @dguzek):

• Replace the formula in /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core/Formula/mariadb.rb with the previous version.

• Reinstall MariaDB:
  brew uninstall mariadb
brew install mariadb
  (use --devel to install 10.2.5 which also works)

• (Re)install mysql2

[quietly-turning]

For the time being, it seems this problem can also be resolved on macOS by unlinking mariadb and installing mariadb-connector-c. From there, you should be able to reinstall mysql2.

brew unlink mariadb
brew install mariadb-connector-c
gem uninstall mysql2
gem install mysql2

Unfortunately, I don't understand the problem well enough to be of any more help than that.

[mkastner]

Yep, same here.

@dguzek you just saved my sunday. Thanks! I've just spent three hours trying solve this.

[otherguy]

@dguzek You saved my tuesday as well ❤️

[sodabrew]

I haven't had a moment to get MariaDB 10.2 installed to see what's different/missing from its headers, but I will gate the next 0.4.7 release on sorting this out.

PRs welcome if anybody wants to take a stab at this before I have time to get to it!

[foalford]

I bumped into this too. Did below and gem install mysql2 succeeded.

+++ /usr/include/mysql/mysql.h  
@@ -58,6 +58,7 @@
 #endif
 #include "mariadb_com.h"
 #include "mariadb_version.h"
+#include "mysql_version.h"
 #include "ma_list.h"
 #include "mariadb_ctype.h" 

The missing MYSQL_SERVER_VERSION is defined in mysql_verion.h file which wasn't included in common header file. However this macro is only needed when LIBMYSQL_VERSION is not present, which is brought by mariadb-connector-c (on OS X).

[Zelnox]

I tried @foalford’s suggestion by editing usr/local/include/mysql/mysql.h and relink.
The gem installs successfully (still using 0.3.20), but when running tests in my Rails project, I ran into
NameError: uninitialized constant Mysql2::Client::LONG_PASSWORD
I tried with mysql2 0.4.6, but running tests also raises the same name error.

[guaguasi]

diff --git a/ext/mysql2/client.c b/ext/mysql2/client.c
index 2f20512..17a2c80 100644
--- a/ext/mysql2/client.c
+++ b/ext/mysql2/client.c
@@ -1419,6 +1419,11 @@ void init_mysql2_client() {
 #ifdef CLIENT_LONG_PASSWORD
   rb_const_set(cMysql2Client, rb_intern("LONG_PASSWORD"),
       LONG2NUM(CLIENT_LONG_PASSWORD));
+#elif defined(MARIADB_BASE_VERSION)
+  if (strcmp(MARIADB_BASE_VERSION, "mariadb-10.2") == 0) {
+    rb_const_set(cMysql2Client, rb_intern("LONG_PASSWORD"),
+        LONG2NUM(0));
+  }
 #endif

 #ifdef CLIENT_FOUND_ROWS
diff --git a/ext/mysql2/mysql2_ext.h b/ext/mysql2/mysql2_ext.h
index f53f4b4..cb4a1de 100644
--- a/ext/mysql2/mysql2_ext.h
+++ b/ext/mysql2/mysql2_ext.h
@@ -12,11 +12,13 @@ void Init_mysql2(void);
 #ifdef HAVE_MYSQL_H
 #include <mysql.h>
 #include <mysql_com.h>
+#include <mysql_version.h>
 #include <errmsg.h>
 #include <mysqld_error.h>
 #else
 #include <mysql/mysql.h>
 #include <mysql/mysql_com.h>
+#include <mysql/mysql_version.h>
 #include <mysql/errmsg.h>
 #include <mysql/mysqld_error.h>
 #endif

I was able to get it to compile with the above patch and it appears to run fine (barely tested it), but when I attempt to run the tests, I get a segfault. I don't think that's normal, but I don't know.

The issue appears to be due to 10.2 using mariadb_com.h which defines _mysql_com_h thereby causing the mysql_com.h included in mysql2_ext.h, which defines CLIENT_LONG_PASSWORD, to be skipped over. According to mysql_com.h, CLIENT_LONG_PASSWORD is "obsoleted".

I also can't compile against HEAD, but I'll look into that tomorrow. I get the following errors when I try:

[lawrence@dev-01 mysql2]$ rake
RuboCop is not available
cd tmp/x86_64-linux/mysql2/2.4.1
/usr/bin/gmake
compiling ../../../../ext/mysql2/client.c
../../../../ext/mysql2/client.c: In function ‘decr_mysql2_client’:
../../../../ext/mysql2/client.c:33:49: error: ‘NET’ has no member named ‘vio’
 #define CONNECTED(wrapper) (wrapper->client->net.vio != NULL && wrapper->client->net.fd != -1)
                                                 ^
../../../../ext/mysql2/client.c:291:9: note: in expansion of macro ‘CONNECTED’
     if (CONNECTED(wrapper) && !wrapper->automatic_close) {
         ^
../../../../ext/mysql2/client.c: In function ‘rb_mysql_client_closed’:
../../../../ext/mysql2/client.c:33:49: error: ‘NET’ has no member named ‘vio’
 #define CONNECTED(wrapper) (wrapper->client->net.vio != NULL && wrapper->client->net.fd != -1)
                                                 ^
../../../../ext/mysql2/client.c:484:10: note: in expansion of macro ‘CONNECTED’
   return CONNECTED(wrapper) ? Qfalse : Qtrue;
          ^
../../../../ext/mysql2/client.c: In function ‘rb_mysql_client_async_result’:
../../../../ext/mysql2/client.c:33:49: error: ‘NET’ has no member named ‘vio’
 #define CONNECTED(wrapper) (wrapper->client->net.vio != NULL && wrapper->client->net.fd != -1)
                                                 ^
../../../../ext/mysql2/client.c:37:8: note: in expansion of macro ‘CONNECTED’
   if (!CONNECTED(wrapper) && !wrapper->reconnect_enabled) { \
        ^
../../../../ext/mysql2/client.c:565:3: note: in expansion of macro ‘REQUIRE_CONNECTED’
   REQUIRE_CONNECTED(wrapper);
   ^
../../../../ext/mysql2/client.c: In function ‘disconnect_and_raise’:
../../../../ext/mysql2/client.c:33:49: error: ‘NET’ has no member named ‘vio’
 #define CONNECTED(wrapper) (wrapper->client->net.vio != NULL && wrapper->client->net.fd != -1)
                                                 ^
../../../../ext/mysql2/client.c:610:7: note: in expansion of macro ‘CONNECTED’
   if (CONNECTED(wrapper)) {
       ^
../../../../ext/mysql2/client.c: In function ‘disconnect_and_mark_inactive’:
../../../../ext/mysql2/client.c:33:49: error: ‘NET’ has no member named ‘vio’
 #define CONNECTED(wrapper) (wrapper->client->net.vio != NULL && wrapper->client->net.fd != -1)
                                                 ^
../../../../ext/mysql2/client.c:671:9: note: in expansion of macro ‘CONNECTED’
     if (CONNECTED(wrapper)) {
         ^
../../../../ext/mysql2/client.c: In function ‘rb_query’:
../../../../ext/mysql2/client.c:33:49: error: ‘NET’ has no member named ‘vio’
 #define CONNECTED(wrapper) (wrapper->client->net.vio != NULL && wrapper->client->net.fd != -1)
                                                 ^
../../../../ext/mysql2/client.c:37:8: note: in expansion of macro ‘CONNECTED’
   if (!CONNECTED(wrapper) && !wrapper->reconnect_enabled) { \
        ^
../../../../ext/mysql2/client.c:752:3: note: in expansion of macro ‘REQUIRE_CONNECTED’
   REQUIRE_CONNECTED(wrapper);
   ^
../../../../ext/mysql2/client.c: In function ‘rb_mysql_client_real_escape’:
../../../../ext/mysql2/client.c:33:49: error: ‘NET’ has no member named ‘vio’
 #define CONNECTED(wrapper) (wrapper->client->net.vio != NULL && wrapper->client->net.fd != -1)
                                                 ^
../../../../ext/mysql2/client.c:37:8: note: in expansion of macro ‘CONNECTED’
   if (!CONNECTED(wrapper) && !wrapper->reconnect_enabled) { \
        ^
../../../../ext/mysql2/client.c:808:3: note: in expansion of macro ‘REQUIRE_CONNECTED’
   REQUIRE_CONNECTED(wrapper);
   ^
../../../../ext/mysql2/client.c: In function ‘_mysql_client_options’:
../../../../ext/mysql2/client.c:33:49: error: ‘NET’ has no member named ‘vio’
 #define CONNECTED(wrapper) (wrapper->client->net.vio != NULL && wrapper->client->net.fd != -1)
                                                 ^
../../../../ext/mysql2/client.c:43:7: note: in expansion of macro ‘CONNECTED’
   if (CONNECTED(wrapper)) { \
       ^
../../../../ext/mysql2/client.c:852:3: note: in expansion of macro ‘REQUIRE_NOT_CONNECTED’
   REQUIRE_NOT_CONNECTED(wrapper);
   ^
../../../../ext/mysql2/client.c: In function ‘rb_mysql_client_server_info’:
../../../../ext/mysql2/client.c:33:49: error: ‘NET’ has no member named ‘vio’
 #define CONNECTED(wrapper) (wrapper->client->net.vio != NULL && wrapper->client->net.fd != -1)
                                                 ^
../../../../ext/mysql2/client.c:37:8: note: in expansion of macro ‘CONNECTED’
   if (!CONNECTED(wrapper) && !wrapper->reconnect_enabled) { \
        ^
../../../../ext/mysql2/client.c:969:3: note: in expansion of macro ‘REQUIRE_CONNECTED’
   REQUIRE_CONNECTED(wrapper);
   ^
../../../../ext/mysql2/client.c: In function ‘rb_mysql_client_socket’:
../../../../ext/mysql2/client.c:33:49: error: ‘NET’ has no member named ‘vio’
 #define CONNECTED(wrapper) (wrapper->client->net.vio != NULL && wrapper->client->net.fd != -1)
                                                 ^
../../../../ext/mysql2/client.c:37:8: note: in expansion of macro ‘CONNECTED’
   if (!CONNECTED(wrapper) && !wrapper->reconnect_enabled) { \
        ^
../../../../ext/mysql2/client.c:996:3: note: in expansion of macro ‘REQUIRE_CONNECTED’
   REQUIRE_CONNECTED(wrapper);
   ^
../../../../ext/mysql2/client.c: In function ‘rb_mysql_client_last_id’:
../../../../ext/mysql2/client.c:33:49: error: ‘NET’ has no member named ‘vio’
 #define CONNECTED(wrapper) (wrapper->client->net.vio != NULL && wrapper->client->net.fd != -1)
                                                 ^
../../../../ext/mysql2/client.c:37:8: note: in expansion of macro ‘CONNECTED’
   if (!CONNECTED(wrapper) && !wrapper->reconnect_enabled) { \
        ^
../../../../ext/mysql2/client.c:1013:3: note: in expansion of macro ‘REQUIRE_CONNECTED’
   REQUIRE_CONNECTED(wrapper);
   ^
../../../../ext/mysql2/client.c: In function ‘rb_mysql_client_affected_rows’:
../../../../ext/mysql2/client.c:33:49: error: ‘NET’ has no member named ‘vio’
 #define CONNECTED(wrapper) (wrapper->client->net.vio != NULL && wrapper->client->net.fd != -1)
                                                 ^
../../../../ext/mysql2/client.c:37:8: note: in expansion of macro ‘CONNECTED’
   if (!CONNECTED(wrapper) && !wrapper->reconnect_enabled) { \
        ^
../../../../ext/mysql2/client.c:1027:3: note: in expansion of macro ‘REQUIRE_CONNECTED’
   REQUIRE_CONNECTED(wrapper);
   ^
../../../../ext/mysql2/client.c: In function ‘rb_mysql_client_thread_id’:
../../../../ext/mysql2/client.c:33:49: error: ‘NET’ has no member named ‘vio’
 #define CONNECTED(wrapper) (wrapper->client->net.vio != NULL && wrapper->client->net.fd != -1)
                                                 ^
../../../../ext/mysql2/client.c:37:8: note: in expansion of macro ‘CONNECTED’
   if (!CONNECTED(wrapper) && !wrapper->reconnect_enabled) { \
        ^
../../../../ext/mysql2/client.c:1044:3: note: in expansion of macro ‘REQUIRE_CONNECTED’
   REQUIRE_CONNECTED(wrapper);
   ^
../../../../ext/mysql2/client.c: In function ‘rb_mysql_client_select_db’:
../../../../ext/mysql2/client.c:33:49: error: ‘NET’ has no member named ‘vio’
 #define CONNECTED(wrapper) (wrapper->client->net.vio != NULL && wrapper->client->net.fd != -1)
                                                 ^
../../../../ext/mysql2/client.c:37:8: note: in expansion of macro ‘CONNECTED’
   if (!CONNECTED(wrapper) && !wrapper->reconnect_enabled) { \
        ^
../../../../ext/mysql2/client.c:1069:3: note: in expansion of macro ‘REQUIRE_CONNECTED’
   REQUIRE_CONNECTED(wrapper);
   ^
../../../../ext/mysql2/client.c: In function ‘rb_mysql_client_ping’:
../../../../ext/mysql2/client.c:33:49: error: ‘NET’ has no member named ‘vio’
 #define CONNECTED(wrapper) (wrapper->client->net.vio != NULL && wrapper->client->net.fd != -1)
                                                 ^
../../../../ext/mysql2/client.c:1097:8: note: in expansion of macro ‘CONNECTED’
   if (!CONNECTED(wrapper)) {
        ^
../../../../ext/mysql2/client.c: In function ‘rb_mysql_client_prepare_statement’:
../../../../ext/mysql2/client.c:33:49: error: ‘NET’ has no member named ‘vio’
 #define CONNECTED(wrapper) (wrapper->client->net.vio != NULL && wrapper->client->net.fd != -1)
                                                 ^
../../../../ext/mysql2/client.c:37:8: note: in expansion of macro ‘CONNECTED’
   if (!CONNECTED(wrapper) && !wrapper->reconnect_enabled) { \
        ^
../../../../ext/mysql2/client.c:1347:3: note: in expansion of macro ‘REQUIRE_CONNECTED’
   REQUIRE_CONNECTED(wrapper);
   ^
../../../../ext/mysql2/client.c: In function ‘init_mysql2_client’:
../../../../ext/mysql2/client.c:1446:28: warning: comparison with string literal results in unspecified behavior [-Waddress]
   if (MARIADB_BASE_VERSION == "mariadb-10.2") {
                            ^
../../../../ext/mysql2/client.c: In function ‘rb_set_ssl_mode_option’:
../../../../ext/mysql2/client.c:140:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
../../../../ext/mysql2/client.c: In function ‘rb_mysql_client_ping’:
../../../../ext/mysql2/client.c:1102:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
../../../../ext/mysql2/client.c: In function ‘rb_mysql_client_closed’:
../../../../ext/mysql2/client.c:485:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
../../../../ext/mysql2/client.c: At top level:
cc1: warning: unrecognized command line option "-Wno-used-but-marked-unused" [enabled by default]
cc1: warning: unrecognized command line option "-Wno-static-in-inline" [enabled by default]
cc1: warning: unrecognized command line option "-Wno-reserved-id-macro" [enabled by default]
cc1: warning: unrecognized command line option "-Wno-missing-variable-declarations" [enabled by default]
cc1: warning: unrecognized command line option "-Wno-documentation-unknown-command" [enabled by default]
cc1: warning: unrecognized command line option "-Wno-disabled-macro-expansion" [enabled by default]
cc1: warning: unrecognized command line option "-Wno-covered-switch-default" [enabled by default]
cc1: warning: unrecognized command line option "-Wno-conditional-uninitialized" [enabled by default]
cc1: warning: unrecognized command line option "-Wno-self-assign" [enabled by default]
cc1: warning: unrecognized command line option "-Wno-constant-logical-operand" [enabled by default]
cc1: warning: unrecognized command line option "-Wno-parentheses-equality" [enabled by default]
cc1: warning: unrecognized command line option "-Wno-tautological-compare" [enabled by default]
gmake: *** [client.o] Error 1
rake aborted!
Command failed with status (2): [/usr/bin/gmake...]
/usr/local/rvm/gems/ruby-2.4.1/gems/rake-compiler-1.0.4/lib/rake/extensiontask.rb:166:in `block (2 levels) in define_compile_tasks'
/usr/local/rvm/gems/ruby-2.4.1/gems/rake-compiler-1.0.4/lib/rake/extensiontask.rb:165:in `block in define_compile_tasks'
/usr/local/rvm/gems/ruby-2.4.1@global/gems/rake-12.0.0/exe/rake:27:in `<top (required)>'
Tasks: TOP => default => spec => compile => compile:x86_64-linux => compile:mysql2:x86_64-linux => copy:mysql2:x86_64-linux:2.4.1 => tmp/x86_64-linux/mysql2/2.4.1/mysql2.so
(See full trace by running task with --trace)

[foalford]

@Zelnox This is an known issue with mysql2 gem. I end up using 10.1 client and gem 0.3.18. Checkout #603

[dgsan]

Just ran into this using MariaDB from their Ubuntu repos (https://downloads.mariadb.org/mariadb/repositories/).

[thiensubs]

@dguzek Thanks you! It work.