Add new CPPCHECK build system module for static code analysis of projects.

LUFA/Build/lufa.cppcheck.in

+#
+#             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)