Fix nasa#419, Add makefile to simplify local build

.gitignore

@@ -1 +1,2 @@
-build/inc/
+build
+Makefile

Makefile.sample

@@ -0,0 +1,152 @@
+#
+# Operating System Abstraction Layer CMake / GNU make wrapper
+#
+# ABOUT THIS MAKEFILE:
+# It is a GNU-make wrapper that calls the CMake tools appropriately
+# so that setting up a new build is fast and easy with no need to
+# learn the CMake commands.  It also makes it easier to integrate
+# the build with IDE tools such as Eclipse by providing a default
+# makefile that has the common targets such as all/clean/etc.
+#
+# Use of this file is optional.
+#
+# For _ALL_ targets defined in this file the build tree location may
+# be specified via the "O" variable (i.e. make O=<my-build-dir> all).
+# If not specified then the "build" subdirectory will be assumed.
+#
+# This wrapper defines the following major targets:
+#  prep -- Runs CMake to create a new or re-configure an existing build tree
+#    Note that multiple build trees can exist from a single source
+#    Other control options may be passed to CMake via
+#    make variables depending on the mission build scripts.  These will be
+#    cached in the build tree so they do not need to be set again thereafter.
+#
+#  all -- Build all targets in the CMake build tree
+#
+#  install -- Copy all files to the installation tree and run packaging scripts
+#     The "DESTDIR" and "INSTALLPREFIX" environment variables control where the
+#     files are copied
+#
+#  clean -- Clean all targets in the CMake build tree, but not the build tree itself.
+#
+#  distclean -- Entirely remove the build directory specified by "O"
+#      Note that after this the "prep" step must be run again in order to build.
+#      Use caution with this as it does an rm -rf - don't set O to your home dir!
+#
+#  test -- Run all unit tests defined in the build on the host.  This will not
+#      work if the BSPTYPE selection is not compatible with the host.
+#      In that case it is up to the user to copy the executables to the target
+#      and run them.
+#
+#  lcov -- Runs the "lcov" tool on the build tree to collect all code coverage
+#      analysis data and build the reports.  Code coverage data may be created by
+#      the "make test" target above.
+#
+
+# Establish default values for critical variables.  Any of these may be overridden
+# on the command line or via the make environment configuration in an IDE
+O ?= build
+BSPTYPE ?= generic-linux
+BUILDTYPE ?= debug
+INSTALLPREFIX ?= /exe
+DESTDIR ?= $(O)
+
+# The "DESTDIR" variable is a bit more complicated because it should be an absolute
+# path for CMake, but we want to accept either absolute or relative paths.  So if
+# the path does NOT start with "/", prepend it with the current directory.
+ifeq ($(filter /%, $(DESTDIR)),)
+DESTDIR := $(CURDIR)/$(DESTDIR)
+endif
+
+# The "LOCALTGTS" defines the top-level targets that are implemented in this makefile
+# Any other target may also be given, in that case it will simply be passed through.
+LOCALTGTS := prep all clean install distclean test lcov
+OTHERTGTS := $(filter-out $(LOCALTGTS),$(MAKECMDGOALS))
+
+# As this makefile does not build any real files, treat everything as a PHONY target
+# This ensures that the rule gets executed even if a file by that name does exist
+.PHONY: $(LOCALTGTS) $(OTHERTGTS)
+
+# If the target name appears to be a directory (ends in /), do a make all in that directory
+DIRTGTS := $(filter %/,$(OTHERTGTS))
+ifneq ($(DIRTGTS),)
+$(DIRTGTS):
+	$(MAKE) -C $(O)/$(patsubst $(O)/%,%,$(@)) all
+endif
+
+# For any other goal that is not one of the known local targets, pass it to the build
+# as there might be a target by that name.  For example, this is useful for rebuilding
+# single unit test executable files while debugging from the IDE
+FILETGTS := $(filter-out $(DIRTGTS),$(OTHERTGTS))
+ifneq ($(FILETGTS),)
+$(FILETGTS):
+	$(MAKE) -C $(O) $(@)
+endif
+
+# The "prep" step requires extra options that are specified via enviroment variables.
+# Certain special ones should be passed via cache (-D) options to CMake.
+# These are only needed for the "prep" target but they are computed globally anyway.
+#
+# Note this simple makefile just builds for one target, could trivally manage
+# multiple targets by changing build directory.  More complex target
+# list examples are provide by cFE..
+PREP_OPTS := -DOSAL_SYSTEM_BSPTYPE=$(BSPTYPE) -DINSTALL_TARGET_LIST=.
+
+ifneq ($(INSTALLPREFIX),)
+PREP_OPTS += -DCMAKE_INSTALL_PREFIX=$(INSTALLPREFIX)
+endif
+
+ifneq ($(VERBOSE),)
+PREP_OPTS += --trace
+endif
+
+ifneq ($(OMIT_DEPRECATED),)
+PREP_OPTS += -DOSAL_OMIT_DEPRECATED=$(OMIT_DEPRECATED)
+endif
+
+ifneq ($(BUILDTYPE),)
+PREP_OPTS += -DCMAKE_BUILD_TYPE=$(BUILDTYPE)
+endif
+
+ifneq ($(ENABLE_UNIT_TESTS),)
+PREP_OPTS += -DENABLE_UNIT_TESTS=$(ENABLE_UNIT_TESTS)
+endif
+
+ifneq ($(PERMISSIVE_MODE),)
+PREP_OPTS += -DOSAL_CONFIG_DEBUG_PERMISSIVE_MODE=$(PERMISSIVE_MODE)
+endif
+
+all:
+	$(MAKE) --no-print-directory -C "$(O)" all
+
+install:
+	$(MAKE) --no-print-directory -C "$(O)" DESTDIR="${DESTDIR}" install
+
+prep $(O)/.prep:
+	mkdir -p "$(O)"
+	(cd "$(O)" && cmake $(PREP_OPTS) "$(CURDIR)")
+	echo "$(PREP_OPTS)" > "$(O)/.prep"
+
+clean:
+	$(MAKE) --no-print-directory -C "$(O)" clean
+
+distclean:
+	rm -rf "$(O)"
+
+# Grab lcov baseline before running tests
+test:
+	lcov --capture --initial --directory $(O) --output-file $(O)/coverage_base.info
+	$(MAKE) --no-print-directory -C "$(O)" test
+
+lcov:
+	lcov --capture --rc lcov_branch_coverage=1 --directory $(O) --output-file $(O)/coverage_test.info
+	lcov --rc lcov_branch_coverage=1 --add-tracefile $(O)/coverage_base.info --add-tracefile $(O)/coverage_test.info --output-file $(O)/coverage_total.info
+	genhtml $(O)/coverage_total.info --branch-coverage --output-directory $(O)/lcov
+	@/bin/echo -e "\n\nCoverage Report Link: file:$(CURDIR)/$(O)/lcov/index.html\n"
+
+
+# Make all the commands that use the build tree depend on a flag file
+# that is used to indicate the prep step has been done.  This way
+# the prep step does not need to be done explicitly by the user
+# as long as the default options are sufficient.
+$(filter-out prep distclean,$(LOCALTGTS)): $(O)/.prep