Update Containerfiles, start CLI tool.

+ Containerfiles: default to using g++.  Most of the dev machines aren't
  working with clang yet; until this is sorted out, they'll need to use
  g++.
+ Add script to determine if the git-tree is tagged.
+ Add basic CMake skeleton and start CLI tool.

cmake/docs.cmake

@@ -0,0 +1,53 @@
+# Doxygen support for scsl.
+
+set(DISABLE_DOXYGEN OFF CACHE BOOL "Don't use Doxygen for documentation.")
+set(DISABLE_SCDOC   OFF CACHE BOOL "Don't use scdoc to generate man pages.")
+add_custom_target(manpages)
+
+### Generate man pages from markdown ###
+
+# md2man uses scdoc to produce a man page from a markdown document.
+if (LINUX and not DISABLE_SCDOC)
+install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/man
+	DESTINATION share)
+
+macro(md2man source)
+	block()
+		set(SOURCE_MANPAGE)
+		set(SOURCE_SECTION)
+		string(REGEX REPLACE "^.+/([^/]+)\.md$" "\\1" SOURCE_MANPAGE ${source})
+		string(REGEX REPLACE "^.+/[^/]+\.([0-9])\.md$" "\\1" SOURCE_SECTION ${source})
+		file(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/man/man${SOURCE_SECTION})
+		configure_file(${source} ${SOURCE_MANPAGE}.scdoc)
+		add_custom_command(TARGET manpages
+			COMMAND scdoc < ${SOURCE_MANPAGE}.scdoc > man/man${SOURCE_SECTION}/${SOURCE_MANPAGE})
+	endblock()
+endmacro()
+
+md2man(docs/lib${PROJECT_NAME}.7.md)
+endif ()
+
+### Build documentation with Doxygen ###
+
+if (not DISABLE_DOXYGEN)
+find_package(Doxygen)
+if (${DOXYGEN_FOUND})
+# prefer scdocs for manpages.
+set(DOXYGEN_GENERATE_MAN NO)
+set(DOXYGEN_GENERATE_LATEX YES)
+set(DOXYGEN_EXTRACT_ALL YES)
+set(DOXYGEN_USE_MDFILE_AS_MAINPAGE "docs/mainpage.md")
+message(STATUS "Doxygen found, building docs.")
+
+doxygen_add_docs(${PROJECT_NAME}_docs
+	${HEADER_FILES}
+	${SOURCE_FILES}
+	USE_STAMP_FILE)
+add_dependencies(${PROJECT_NAME} ${PROJECT_NAME}_docs)
+install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/html
+		  ${CMAKE_CURRENT_BINARY_DIR}/latex
+	DESTINATION share/doc/${PROJECT_NAME}/doxygen)
+add_dependencies(${PROJECT_NAME}_docs manpages)
+endif () # DOXYGEN_FOUND?
+endif () # DISABLE_DOXYGEN?
+

cmake/install.cmake

@@ -0,0 +1,27 @@
+### Install ###
+
+include(CMakePackageConfigHelpers)
+
+### library packaging for CMake and pkgconfig to find built targets.
+write_basic_package_version_file(
+	${PROJECT_NAME}Config.cmake
+	VERSION ${PACKAGE_VERSION}
+	COMPATIBILITY SameMajorVersion
+)
+write_basic_package_version_file(
+	${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
+	VERSION ${PROJECT_VERSION}
+	COMPATIBILITY SameMajorVersion)
+configure_file(${PROJECT_NAME}.pc.in ${PROJECT_NAME}.pc @ONLY)
+
+### set up installation targets.
+
+install(TARGETS ${PROJECT_NAME} LIBRARY DESTINATION lib)
+install(FILES ${HEADERS} DESTINATION include/${PROJECT_NAME})
+install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.pc
+	DESTINATION lib/pkgconfig)
+install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Config.cmake
+	      ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
+	DESTINATION share/${PROJECT_CMAKE_CONFIG_NAME}/cmake)
+
+

cmake/packaging.cmake

@@ -0,0 +1,39 @@
+### Packaging ###
+
+include(InstallRequiredSystemLibraries)
+
+set(CPACK_PACKAGE_VENDOR "K. Isom")
+set(CPACK_PACKAGE_DESCRIPTION_SUMMARY ${PROJECT_DESCRIPTION})
+set(CPACK_PACKAGE_VERSION_MAJOR ${PROJECT_VERSION_MAJOR})
+set(CPACK_PACKAGE_VERSION_MINOR ${PROJECT_VERSION_MINOR})
+set(CPACK_PACKAGE_VERSION_PATCH ${PROJECT_VERSION_PATCH})
+
+set(CPACK_PACKAGE_FILE_NAME
+	${PROJECT_NAME}-${PROJECT_VERSION}-${CMAKE_SYSTEM_NAME}-${CMAKE_SYSTEM_ARCH}${CMAKE_HOST_SYSTEM_PROCESSOR})
+
+# Debian settings
+set(CPACK_DEBIAN_PACKAGE_MAINTAINER ${CPACK_PACKAGE_VENDOR})
+set(CPACK_PACKAGE_DESCRIPTION_SUMMARY ${CPACK_PACKAGE_DESCRIPTION})
+set(CPACK_PACKAGE_DESCRIPTION ${CPACK_PACKAGE_DESCRIPTION})
+set(CPACK_PACKAGE_DEPENDS)
+set(CPACK_DEBIAN_PACKAGE_SECTION devel)
+set(CPACK_DEBIAN_PACKAGE_GENERATE_SHLIBS ON)
+set(CPACK_DEBIAN_FILE_NAME DEB-DEFAULT)
+
+if (LINUX)
+	set(CPACK_GENERATOR "DEB;STGZ;TGZ")
+elseif (APPLE)
+	set(CPACK_GENERATOR "productbuild")
+elseif (MSVC OR MSYS OR MINGW)
+	set(CPACK_GENERATOR "NSIS;ZIP")
+else ()
+	set(CPACK_GENERATOR "ZIP")
+endif ()
+
+set(CPACK_SOURCE_GENERATOR "TGZ;ZIP")
+set(CPACK_SOURCE_IGNORE_FILES
+	/.git
+	/.*build.*)
+
+include (CPack)
+add_custom_target(package_docs DEPENDS ${PROJECT_NAME}_docs package package_source)

cmake/testing.cmake

@@ -0,0 +1,13 @@
+### TESTS ###
+
+set(TEST_SOURCES) # common test source code
+macro(generate_test name)
+	add_executable(test_${name} test_${name}.cc ${TEST_SOURCES} ${ARGN})
+	target_link_libraries(${name} ${PROJECT_NAME})
+	add_test(${name} ${name})
+endmacro()
+
+### ADD TESTS HERE ###
+
+generate_test(${PROJECT_NAME}_test)
+