Variant Annotation and Comparison

A nice post about variant annotation tools
http://blog.goldenhelix.com/ajesaitis/the-sate-of-variant-annotation-a-comparison-of-annovar-snpeff-and-vep/

Makefile detect OS

#Detect OS and processor
ifeq ($(OS),Windows_NT)
    CCFLAGS += -D WIN32
    ifeq ($(PROCESSOR_ARCHITECTURE),AMD64)
        CCFLAGS += -D AMD64
    endif
    ifeq ($(PROCESSOR_ARCHITECTURE),x86)
        CCFLAGS += -D IA32
    endif
else
    UNAME_S := $(shell uname -s)
    ifeq ($(UNAME_S),Linux)
        CCFLAGS += -D LINUX
    endif
    ifeq ($(UNAME_S),Darwin)
        CCFLAGS += -D OSX
    endif
    UNAME_P := $(shell uname -p)
    ifeq ($(UNAME_P),x86_64)
        CCFLAGS += -D AMD64
    endif
    ifneq ($(filter %86,$(UNAME_P)),)
        CCFLAGS += -D IA32
    endif
    ifneq ($(filter arm%,$(UNAME_P)),)
        CCFLAGS += -D ARM
    endif
endif


Reference

http://stackoverflow.com/questions/714100/os-detecting-makefile