feat(make): unified make based build system

Added all prerequisite programs in binary for easier use.
Make is now implemented top-level, and is not expected to do too much
work actually. It will, however, keep track of all required
gsl invocation and make sure calls are efficient by not having
to rebuild everything every time. That's what make does, anyway ;)

Author: Byron

Makefile

@@ -0,0 +1,31 @@
+.PHONY:  json-to-xml clean help api-deps
+
+include Makefile.helpers
+
+PYTHON = python2.7
+CONVERT = $(PYTHON) ./etc/bin/json2xml.py
+GSL = ./etc/bin/gsl_$(OS)-$(ARCH)
+
+API_DEPS = .api.deps
+API_JSON_FILES = $(shell find ./etc -type f -name '*-api.json')
+API_XML_FILES = $(patsubst %.json,%.xml,$(API_JSON_FILES))
+
+help:
+	$(info Programs)
+	$(info ----> GSL: '$(GSL)')
+	$(info ----> json2xml: '$(CONVERT)')
+	$(info )
+	$(info Targets)
+	$(info help         -   print this help)
+	$(info json-to-xml  -   convert json API files to xml for consumption by GSL)
+	$(info api-deps     -   generate a file to tell make what API file dependencies will be)
+
+json-to-xml: $(API_XML_FILES)
+
+%.xml: %.json
+	$(CONVERT) --pretty -o $@ < $<
+
+clean:
+	-rm $(API_XML_FILES)
+
+

Makefile.helpers

@@ -0,0 +1,35 @@
+OS := $(shell uname)
+ifeq ($(OS), "")
+    OS = Windows
+endif
+
+ARCH :=
+
+# based on http://stackoverflow.com/questions/714100/os-detecting-makefile
+ifeq ($(OS),Windows)
+    ARCH = WIN32
+    ifeq ($(PROCESSOR_ARCHITECTURE),AMD64)
+        ARCH = AMD64
+    endif
+    ifeq ($(PROCESSOR_ARCHITECTURE),x86)
+        ARCH = IA32
+    endif
+else
+    UNAME_S := $(shell uname -s)
+    ifeq ($(UNAME_S),Linux)
+        OS = LINUX
+    endif
+    ifeq ($(UNAME_S),Darwin)
+        OS = OSX
+    endif
+    UNAME_M := $(shell uname -m)
+    ifeq ($(UNAME_M),x86_64)
+        ARCH = AMD64
+    endif
+    ifneq ($(filter %86,$(UNAME_M)),)
+        ARCH = IA32
+    endif
+    ifneq ($(filter arm%,$(UNAME_M)),)
+        ARCH = ARM
+    endif
+endif

README.md

@@ -14,4 +14,20 @@ which require the token to be refreshed.
 You will need authorization to perform most of the operations implemented here - it can be obtained
 and handled using the [yup-oauth2 library][oauth].
 
-[oauth]: [https://crates.io/crates/yup-oauth2]
+
+# License
+
+The license of everything not explicitly under a different license are licensed as specified in `LICENSE.md`.
+
+What follows is a list of other material that is licensed differently.
+
+* **./etc/bin/json2xml.py** is licensed like MIT, as shown in the header of the file. See original source [on github][html2json].
+* **./etc/bin/gsl_\*** is licensed under [GNU GPL][imatix-copying]. The source code is [on github][gsl]
+* **./etc/api/\*\*/*.json** are licensed under a [MIT-like google license][google-lic]
+
+
+[oauth]: https://crates.io/crates/yup-oauth2
+[html2json]: https://github.com/hay/xml2json
+[imatix-copying]: https://github.com/imatix/gsl/blob/master/COPYING
+[gsl]: https://github.com/imatix/gsl
+[google-lic]: https://github.com/google/google-api-go-client/blob/master/LICENSE