Added a debug switch

mariadb-connector-c.spec

@@ -1,3 +1,6 @@
+# For deep debugging we need to build binaries with extra debug info
+%bcond_with     debug
+
 Name:           mariadb-connector-c
 Version:        3.1.2
 Release:        1%{?dist}
@@ -60,6 +63,10 @@ rm -r win zlib win-iconv examples
 
 
 %build
+# Override all optimization flags when making a debug build
+%{?with_debug: CFLAGS="$CFLAGS -O0 -g"}
+CXXFLAGS="$CFLAGS"
+export CFLAGS CXXFLAGS
 
 # https://jira.mariadb.org/browse/MDEV-13836:
 #   The server has (used to have for ages) some magic around the port number.
@@ -71,7 +78,7 @@ rm -r win zlib win-iconv examples
 # so we can't use %%{_datadir} and so forth here.
 
 %cmake . \
-       -DCMAKE_BUILD_TYPE=RelWithDebInfo \
+       -DCMAKE_BUILD_TYPE="%{?with_debug:Debug}%{!?with_tokudb:RelWithDebInfo}" \
        -DCMAKE_SYSTEM_PROCESSOR="%{_arch}" \
 \
        -DMARIADB_UNIX_ADDR=%{_sharedstatedir}/mysql/mysql.sock \
@@ -179,6 +186,9 @@ popd
 #   https://jira.mariadb.org/browse/CONC-410
 #      DESCRIPTION: Fix pkgconfig file - overlinking issues
 #      IN_PROGRESS: PR submitted, problem consulted & explained, waiting on upstream response
+#   https://jira.mariadb.org/browse/CONC-426
+#      DESCRIPTION: Debug build issues
+#      NEW: reported to upstream
 
 # Coverity Scan results from 3.0.10 release:
 #   https://jira.mariadb.org/browse/CONC-234
@@ -200,6 +210,7 @@ popd
 - Rebase to 3.1 version
 - Disabling the ED25519 plugin
 - Plugindir patch upstreamed
+- Added debug build switch
 
 * Tue May 21 2019 Michal Schorm <mschorm@redhat.com> - 3.0.10-2
 - Fix overlinking issues