--enable-gcov: disable optimizations in configure

instead of potentially having ENABLE_OPTIMIZED set and overriding
gb_COMPILEROPTFLAGS flag to -O0

Change-Id: If14b44f06cda11aa887c88dbc7549effb8fe7a89
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/187038
Reviewed-by: Christian Lohmaier <lohmaier+LibreOffice@googlemail.com>
Tested-by: Jenkins

configure.ac

@@ -5313,7 +5313,7 @@ ENABLE_OPTIMIZED=
 ENABLE_OPTIMIZED_DEBUG=
 AC_MSG_CHECKING([whether to compile with optimization flags])
 if test -z "$enable_optimized"; then
-    if test -n "$ENABLE_DEBUG$ENABLE_DBGUTIL"; then
+    if test -n "$ENABLE_DEBUG$ENABLE_DBGUTIL$ENABLE_GCOV"; then
         enable_optimized=no
     else
         enable_optimized=yes

solenv/gbuild/platform/com_GCC_defs.mk

@@ -124,7 +124,6 @@ gb_GCOV_LDFLAGS := -fprofile-arcs -lgcov
 gb_CFLAGS_COMMON += -fprofile-arcs -ftest-coverage
 gb_CXXFLAGS_COMMON += -fprofile-arcs -ftest-coverage
 gb_LinkTarget_LDFLAGS += $(gb_GCOV_LDFLAGS)
-gb_COMPILEROPTFLAGS := -O0
 endif
 
 ifeq ($(DISABLE_DYNLOADING),TRUE)