diff -r df47e083139b -r 002497e6c27d test/make/configure.vm
--- a/test/make/configure.vm	Fri Jan 05 21:02:37 2024 +0100
+++ b/test/make/configure.vm	Fri Jan 05 21:04:57 2024 +0100
@@ -444,10 +444,10 @@
 
 # add general dependency flags to flags.mk
 echo "# general flags" >> "$TEMP_DIR/flags.mk"
-if [ -n "${TEMP_CFLAGS}" -a -n "$lang_c" ]; then
+if [ -n "${TEMP_CFLAGS}" ] && [ -n "$lang_c" ]; then
     echo "CFLAGS += $TEMP_CFLAGS" >> "$TEMP_DIR/flags.mk"
 fi
-if [ -n "${TEMP_CXXFLAGS}" -a -n "$lang_cpp" ]; then
+if [ -n "${TEMP_CXXFLAGS}" ] && [ -n "$lang_cpp" ]; then
     echo "CXXFLAGS += $TEMP_CXXFLAGS" >> "$TEMP_DIR/flags.mk"
 fi
 if [ -n "${TEMP_LDFLAGS}" ]; then
@@ -578,10 +578,10 @@
 fi
 #end
 
-if [ -n "${TEMP_CFLAGS}" -a -n "$lang_c" ]; then
+if [ -n "${TEMP_CFLAGS}" ] && [ -n "$lang_c" ]; then
     echo "${target.cFlags}  += $TEMP_CFLAGS" >> "$TEMP_DIR/flags.mk"
 fi
-if [ -n "${TEMP_CXXFLAGS}" -a -n "$lang_cpp" ]; then
+if [ -n "${TEMP_CXXFLAGS}" ] && [ -n "$lang_cpp" ]; then
     echo "${target.cxxFlags}  += $TEMP_CXXFLAGS" >> "$TEMP_DIR/flags.mk"
 fi
 if [ "$BUILD_TYPE" = "debug" ]; then