Change the default optimization from -O3 to -O2 in mysql_release.cmake BUILD_CONFIG profile

debian/patches/0025-Change-the-default-optimization-from-O3-to-O2-in-mys.patch

+From: =?utf-8?q?Ond=C5=99ej_Sur=C3=BD?= <ondrej@debian.org>
+Date: Wed, 22 Nov 2017 20:32:51 +0000
+Subject: Change the default optimization from -O3 to -O2 in
+ mysql_release.cmake BUILD_CONFIG profile
+
+---
+ cmake/build_configurations/mysql_release.cmake | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/cmake/build_configurations/mysql_release.cmake b/cmake/build_configurations/mysql_release.cmake
+index c07de46..b8e1366 100644
+--- a/cmake/build_configurations/mysql_release.cmake
++++ b/cmake/build_configurations/mysql_release.cmake
+@@ -155,12 +155,12 @@ IF(UNIX)
+   IF(CMAKE_COMPILER_IS_GNUCC)
+     SET(COMMON_C_FLAGS               "-g -static-libgcc -fno-omit-frame-pointer -fno-strict-aliasing  -Wno-uninitialized")
+     SET(CMAKE_C_FLAGS_DEBUG          "-O ${COMMON_C_FLAGS}")
+-    SET(CMAKE_C_FLAGS_RELWITHDEBINFO "-O3 ${COMMON_C_FLAGS}")
++    SET(CMAKE_C_FLAGS_RELWITHDEBINFO "-O2 ${COMMON_C_FLAGS}")
+   ENDIF()
+   IF(CMAKE_COMPILER_IS_GNUCXX)
+     SET(COMMON_CXX_FLAGS               "-g -static-libgcc -fno-omit-frame-pointer -fno-strict-aliasing -Wno-uninitialized")
+     SET(CMAKE_CXX_FLAGS_DEBUG          "-O ${COMMON_CXX_FLAGS}")
+-    SET(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-O3 ${COMMON_CXX_FLAGS}")
++    SET(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-O2 ${COMMON_CXX_FLAGS}")
+   ENDIF()
+ 
+   # IBM Z flags

debian/patches/series

@@ -22,3 +22,4 @@ fix-FTBFS-on-GNU-Hurd.patch
 mytop-merge_src:mytop_improvements.patch
 Add_default_ExecStartPre_to_mariadb@.service.patch
 0024-Revert-to-using-system-pcre-library.patch
+0025-Change-the-default-optimization-from-O3-to-O2-in-mys.patch