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Add WARNINGS_AS_ERRORS make flag

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Previous behavior was all warnings were treated as errors.  This is now
controllable via a make variable and defaults to off (but can be turned on in
local.mk for those who still want the old behavior)
This commit is contained in:
Alex Stewart 2016-04-05 16:45:36 -07:00
parent 02c35d8a71
commit 373e7cae62
1 changed files with 11 additions and 1 deletions
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12
common.mk
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@ -106,8 +106,14 @@ ENTRY_SYMBOL ?= call_user_start
# but compiled code size will come down a small amount.)
SPLIT_SECTIONS ?= 1
# Set this to 1 to have all compiler warnings treated as errors (and stop the
# build). This is recommended whenever you are working on code which will be
# submitted back to the main project, as all submitted code will be expected to
# compile without warnings to be accepted.
WARNINGS_AS_ERRORS ?= 0
# Common flags for both C & C++_
C_CXX_FLAGS ?= -Wall -Werror -Wl,-EL -nostdlib $(EXTRA_C_CXX_FLAGS)
C_CXX_FLAGS ?= -Wall -Wl,-EL -nostdlib $(EXTRA_C_CXX_FLAGS)
# Flags for C only
CFLAGS ?= $(C_CXX_FLAGS) -std=gnu99 $(EXTRA_CFLAGS)
# Flags for C++ only
@ -118,6 +124,10 @@ CPPFLAGS += -mlongcalls -mtext-section-literals
LDFLAGS = -nostdlib -Wl,--no-check-sections -L$(BUILD_DIR)sdklib -L$(ROOT)lib -u $(ENTRY_SYMBOL) -Wl,-static -Wl,-Map=$(BUILD_DIR)$(PROGRAM).map $(EXTRA_LDFLAGS)
ifeq ($(WARNINGS_AS_ERRORS),1)
C_CXX_FLAGS += -Werror
endif
ifeq ($(SPLIT_SECTIONS),1)
C_CXX_FLAGS += -ffunction-sections -fdata-sections
LDFLAGS += -Wl,-gc-sections