Enable debug build by default

Author: fjeremic

runtime/cmake/omr_config.cmake

@@ -28,5 +28,5 @@ set(OMR_DDR OFF CACHE BOOL "")
 set(OMR_EXAMPLE OFF CACHE INTERNAL "")
 set(OMR_FVTEST OFF CACHE INTERNAL "")
 set(OMR_GC ON CACHE INTERNAL "")
-set(OMR_SEPARATE_DEBUG_INFO ON CACHE BOOL "")
+set(OMR_SEPARATE_DEBUG_INFO OFF CACHE BOOL "")
 set(OMRPORT_OMRSIG_SUPPORT ON CACHE INTERNAL "")

runtime/cmake/platform/toolcfg/gnu.cmake

@@ -20,7 +20,7 @@
 # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0 WITH Classpath-exception-2.0 OR LicenseRef-GPL-2.0 WITH Assembly-exception
 ################################################################################
 
-list(APPEND OMR_PLATFORM_COMPILE_OPTIONS -O3 -g -fstack-protector)
+list(APPEND OMR_PLATFORM_COMPILE_OPTIONS -O0 -g3 -fstack-protector)
 list(APPEND OMR_PLATFORM_C_COMPILE_OPTIONS -Wimplicit -Wreturn-type)
 list(APPEND OMR_PLATFORM_CXX_COMPILE_OPTIONS -fno-threadsafe-statics)