Make use of project configuration variable for specifying database client library

1 files changed, 26 insertions, 0 deletions

diff --git a/build/root.build b/build/root.build
index ba74c09..49d1911 100644
--- a/build/root.build
+++ b/build/root.build
@@ -1,6 +1,32 @@
 # file      : build/root.build
 # license   : GNU GPL v2; see accompanying LICENSE file
 
+# Configure which database client library to use for build2 versions greater
+# than 0.12.0 and always use MySQL client library otherwise (due to the lack
+# of the project configuration variables support).
+#
+if ($build.version.number > 12000000000)
+{
+  # Whether to use the MySQL or MariaDB client library.
+  #
+  config [string] config.libodb_mysql.client_lib ?= 'mysql'
+
+  # Verify the config.libodb_mysql.client_lib configuration variable value and
+  # provide the short alias for it.
+  #
+  switch $config.libodb_mysql.client_lib
+  {
+    case 'mysql'
+    case 'mariadb'
+      client_lib = $config.libodb_mysql.client_lib
+
+    default
+      fail "invalid config.libodb_mysql.client_lib value '$config.libodb_mysql.client_lib'"
+  }
+}
+else
+  client_lib = 'mysql'
+
 cxx.std = latest
 
 using cxx