###############################################################################
## @file warnings.mk
## @author Y.M. Morgan
## @date 2012/06/09
##
## Setup warning flags.
###############################################################################
ifeq ("$(TARGET_OS)","Android")
	COMMON_FLAGS_WARNINGS := -DANDROID -D__ARM_ARCH_5__ -D__ARM_ARCH_5T__ -D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__ \
	                         -fpic -ffunction-sections -funwind-tables -fstack-protector \
	                         -Wno-psabi -march=armv5te -mtune=xscale -msoft-float -fno-exceptions -mthumb \
	                         -fomit-frame-pointer -fno-strict-aliasing -finline-limit=64 -MMD -MP -MF -D_STLP_USE_SIMPLE_NODE_ALLOC
	GCC_FLAGS_WARNINGS :=
	GXX_FLAGS_WARNINGS := -fno-rtti -Wa,--noexecstack   
else
	COMMON_FLAGS_WARNINGS :=
	GCC_FLAGS_WARNINGS :=
	GXX_FLAGS_WARNINGS :=
endif

# show option associated with warning (gcc >= 4.0.0)
ifneq (0,$(shell expr $(GCC_VERSION) \>= 4.0.0))
	COMMON_FLAGS_WARNINGS += -fdiagnostics-show-option
endif

###COMMON_FLAGS_WARNINGS += -Wall
#COMMON_FLAGS_WARNINGS += -Wextra
###COMMON_FLAGS_WARNINGS += -Wno-unused -Wno-unused-parameter -Wunused-value -Wunused-variable -Wunused-label
#COMMON_FLAGS_WARNINGS += -Wshadow
#COMMON_FLAGS_WARNINGS += -Wswitch-default
#COMMON_FLAGS_WARNINGS += -Wwrite-strings
#COMMON_FLAGS_WARNINGS += -Wundef
#COMMON_FLAGS_WARNINGS += -Wpointer-arith
#COMMON_FLAGS_WARNINGS += -Wformat-nonliteral
#COMMON_FLAGS_WARNINGS += -Wformat-security
#COMMON_FLAGS_WARNINGS += -Winit-self

# C specific
#GCC_FLAGS_WARNINGS += -Wmissing-declarations
#GCC_FLAGS_WARNINGS += -Wmissing-prototypes
#GCC_FLAGS_WARNINGS += -Wjump-misses-init

# c++ specific
#GXX_FLAGS_WARNINGS += -Wctor-dtor-privacy
#GXX_FLAGS_WARNINGS += -Wnon-virtual-dtor
#GXX_FLAGS_WARNINGS += -Wreorder
#GXX_FLAGS_WARNINGS += -Woverloaded-virtual


ifneq ("$(CLANG)","1")
	# gcc >= 4.5.0 (too many false positives with previous versions)
	ifneq (0,$(shell expr $(GCC_VERSION) \>= 4.5.0))
		COMMON_FLAGS_WARNINGS += -Wunreachable-code
	endif
	# gcc >= 4.5.2
	ifneq (0,$(shell expr $(GCC_VERSION) \>= 4.5.2))
		COMMON_FLAGS_WARNINGS += -Wlogical-op
	endif
endif

# Extra warnings
ifeq ("$(W)","1")
	COMMON_FLAGS_WARNINGS += -Wconversion
	COMMON_FLAGS_WARNINGS += -Wswitch-enum
	COMMON_FLAGS_WARNINGS += -Wcast-qual
	# gcc >= 4.4.0
	ifneq (0,$(shell expr $(GCC_VERSION) \>= 4.4.0))
		COMMON_FLAGS_WARNINGS += -Wframe-larger-than=1024
	endif
endif

# Add common flags to specific flags
GCC_FLAGS_WARNINGS += $(COMMON_FLAGS_WARNINGS)
GXX_FLAGS_WARNINGS += $(COMMON_FLAGS_WARNINGS)