#
#             LUFA Library
#     Copyright (C) Dean Camera, 2012.
#
#  dean [at] fourwalledcubicle [dot] com
#           www.lufa-lib.org
#

LUFA_BUILD_MODULES        += CPPCHECK
LUFA_BUILD_TARGETS        += cppcheck cppcheck-config
LUFA_BUILD_MANDATORY_VARS += 
LUFA_BUILD_OPTIONAL_VARS  += CPPCHECK_PATH CPPCHECK_INCLUDES CPPCHECK_EXCLUDES CPPCHECK_MSG_TEMPLATE \
                             CPPCHECK_ENABLE CPPCHECK_SUPPRESS CPPCHECK_FAIL_ON_WARNING CPPCHECK_QUIET

# -----------------------------------------------------------------------------
#                LUFA CPPCheck Buildsystem Makefile Module.
# -----------------------------------------------------------------------------
# DESCRIPTION:
#   Provides a set of targets to scan a project with the free "cppcheck" static
#   analysis tool, to check for code errors at runtime (see http://cppcheck.sourceforge.net).
# -----------------------------------------------------------------------------
# TARGETS:
#
#    cppcheck                  - Scan the project with CPPCheck
#    cppcheck-config           - Use CPPCheck to look for missing include files
#
# MANDATORY PARAMETERS:
#
#    (None)
#
# OPTIONAL PARAMETERS:
#
#    CPPCHECK_PATH             - Path of the files to statically analyze
#    CPPCHECK_INCLUDES         - Extra include paths to search for missing
#                                header files
#    CPPCHECK_EXCLUDES         - Source file paths to exclude checking (can be
#                                a path fragment if desired)
#    CPPCHECK_MSG_TEMPLATE     - Template for cppcheck error and warning output
#    CPPCHECK_ENABLE           - General cppcheck category checks to enable
#    CPPCHECK_SUPPRESS         - Specific cppcheck warnings to disable by ID
#    CPPCHECK_FAIL_ON_WARNING  - Set to Y to fail the build on cppcheck
#                                warnings, N to continue even if warnings occur
#    CPPCHECK_QUIET            - Enable cppcheck verbose or quiet output mode
#
# -----------------------------------------------------------------------------

# Default values of optionally user-supplied variables
CPPCHECK_PATH                ?= .
CPPCHECK_INCLUDES            ?=
CPPCHECK_EXCLUDES            ?=
CPPCHECK_MSG_TEMPLATE        ?= {file}:{line}: {severity} ({id}): {message}
CPPCHECK_ENABLE              ?= all
CPPCHECK_SUPPRESS            ?= variableScope missingInclude
CPPCHECK_FAIL_ON_WARNING     ?= Y
CPPCHECK_QUIET               ?= Y

# Build a default argument list for cppcheck
CPPCHECK_OPTIONS := --template="$(CPPCHECK_MSG_TEMPLATE)" $(CPPCHECK_INCLUDES:%=-I%) $(CPPCHECK_EXCLUDES:%=-i%) --inline-suppr --force --std=c99

# Sanity check parameters and construct additional command line arguments to cppcheck
ifeq ($(CPPCHECK_PATH),)
   $(error Makefile CPPCHECK_PATH option cannot be blank)
endif
ifeq ($(CPPCHECK_FAIL_ON_WARNING), Y)
   CPPCHECK_OPTIONS += --error-exitcode=1
else ifneq ($(CPPCHECK_FAIL_ON_WARNING), N)
	$(error CPPCHECK_FAIL_ON_WARNING must be Y or N)
endif
ifeq ($(CPPCHECK_QUIET), Y)
   CPPCHECK_OPTIONS += --quiet
else ifneq ($(CPPCHECK_QUIET), N)
	$(error CPPCHECK_QUIET must be Y or N)
endif

# Output Messages
MSG_CPPCHECK_CMD         := ' [CPPCHECK]:'

cppcheck-config:
	@echo $(MSG_CPPCHECK_CMD) Checking cppcheck configuration for path \"$(CPPCHECK_PATH)\"
	cppcheck $(CPPCHECK_OPTIONS) --check-config $(CPPCHECK_PATH)

cppcheck:
	@echo $(MSG_CPPCHECK_CMD) Performing cppcheck analysis on path \"$(CPPCHECK_PATH)\"
	cppcheck $(CPPCHECK_OPTIONS) --enable=$(CPPCHECK_ENABLE) $(CPPCHECK_SUPPRESS:%=--suppress=%) $(CPPCHECK_PATH)