[gnunet] 02/02: fix: mysql version detection

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martin-schanzenbach pushed a commit to branch master
in repository gnunet.

commit 286759692f1d5c84da625d5c0ced374a2585e978
Author: Martin Schanzenbach <mschanzenbach@posteo.de>
AuthorDate: Tue Aug 11 11:35:06 2020 +0200

    fix: mysql version detection
    
    Fix detection macro and support mysql8+ my_bool deprecation. Fixes #6465.
---
 configure.ac      | 18 ++++++++++++++++--
 src/mysql/mysql.c |  8 +++++++-
 2 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/configure.ac b/configure.ac
index 39e7ffa7e..88a2134ef 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1404,12 +1404,11 @@ AS_IF([test "$mysql" = "true" -a 
"x$enable_mysql_version_check" = "xyes"],
   AC_MSG_CHECKING(mysql version)
   AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
     [[
-      #include <mysql/mysql.h>]],
+      #include <mysql/mysql_version.h>]],
     [[
       #if (MYSQL_VERSION_ID < 40100)
       #error needs at least version >= 4.1
       #endif
-      int main () { return 0; }
     ]])
     ],
     [mysql=true],
@@ -1423,6 +1422,21 @@ AS_IF([test "$mysql" = "true" -a 
"x$enable_mysql_version_check" = "xyes"],
     mysqlfail=false
     AC_MSG_RESULT(ok)
    ])
+  AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+    [[
+      #include <mysql/mysql_version.h>]],
+    [[
+      #if (MYSQL_VERSION_ID < 80000)
+      #error needs at least version >= 4.1
+      #endif
+    ]])
+    ],
+    [mysql8=true],
+    [mysql8=false])
+  AS_IF([test x$mysql8 = xtrue],
+   [
+    AC_DEFINE([HAVE_MYSQL8],[1],[Have mysql8])
+   ],[])
 ])
 
 AM_CONDITIONAL(HAVE_MYSQL, test x$mysql = xtrue)
diff --git a/src/mysql/mysql.c b/src/mysql/mysql.c
index 713227068..4df1893c6 100644
--- a/src/mysql/mysql.c
+++ b/src/mysql/mysql.c
@@ -26,6 +26,12 @@
 #include <mysql/mysql.h>
 #include "gnunet_mysql_lib.h"
 
+#ifdef HAVE_MYSQL8
+  typedef bool MYSQL_BOOL;
+#else
+  typedef my_bool MYSQL_BOOL; //MySQL < 8 wants this
+#endif
+
 /**
  * Maximum number of supported parameters for a prepared
  * statement.  Increase if needed.
@@ -220,7 +226,7 @@ iopen (struct GNUNET_MYSQL_Context *mc)
   char *mysql_user;
   char *mysql_password;
   unsigned long long mysql_port;
-  my_bool reconnect;
+  MYSQL_BOOL reconnect;
   unsigned int timeout;
 
   mc->dbf = mysql_init (NULL);

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