tests/cpp11_thread: Clean up Makefile

- Remove BOARD_WHITELIST
 - Clean up CXXFLAGS
 - Clean up CFLAGS
 - Blacklist boards where the C++ library is too large on Travis

tests/cpp11_thread/Makefile

@@ -4,22 +4,28 @@ APPLICATION = cpp11_thread
 # If no BOARD is found in the environment, use this default:
 BOARD ?= native
 
+# ROM is overflowing for these boards when using
+# gcc-arm-none-eabi-4.9.3.2015q2-1trusty1 from ppa:terry.guo/gcc-arm-embedded
+# (Travis is using this PPA currently, 2015-06-23)
+# Debian jessie libstdc++-arm-none-eabi-newlib-4.8.3-9+4 works fine, though.
+# Remove this line if Travis is upgraded to a different toolchain which does
+# not pull in all C++ locale code whenever exceptions are used.
+BOARD_INSUFFICIENT_RAM := stm32f0discovery spark-core nucleo-f334
+
 # This has to be the absolute path to the RIOT base directory:
 RIOTBASE ?= $(CURDIR)/../..
 
 # Comment this out to disable code in RIOT that does safety checking
 # which is not needed in a production environment but helps in the
 # development process:
-CFLAGS += -DDEVELHELP -Wno-deprecated
+CFLAGS += -DDEVELHELP
 
 # Change this to 0 show compiler invocation lines by default:
 QUIET ?= 1
 
-BOARD_WHITELIST := stm32f4discovery native
-
 # If you want to add some extra flags when compile c++ files, add these flags
 # to CXXEXFLAGS variable
-CXXEXFLAGS += -std=c++11 -g -O0 -Wno-deprecated
+CXXEXFLAGS += -std=c++11
 
 USEMODULE += cpp11-compat
 USEMODULE += vtimer