--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/autovar/README.txt	Thu Mar 19 22:24:28 2015 +0100
@@ -0,0 +1,69 @@
+autovar -- a small macro auto-detection library
+
+
+the following gives the list of variables available.
+for each variable, a separate header file is used.
+
+OS: Operating System
+ARCH: Architecture
+CC: C Compiler
+ABI: Application Binary Interface
+OSFAMILY: OS Roots
+
+
+the following gives the tree of variables
+
+OS: 
+  Win32
+  Win64
+  Darwin
+    IOS
+    MacOSX
+  Linux
+  FreeBSD
+  OpenBSD
+  NetBSD
+  DragonFlyBSD
+  SunOS
+  Cygwin
+  MinGW
+  NDS
+  PSP
+  BeOS
+  Plan9
+  VMS
+  Minix
+  Unknown
+
+ARCH:
+  X86
+  X64
+  IA64
+  PPC
+  PPC64
+  MIPS64
+  MIPS
+  ARM
+    THUMB
+  SH
+  SPARC64
+  SPARC
+
+ABI:
+  PE
+  Mach
+  ELF
+    ELF32
+    ELF64
+
+OSFAMILY: 
+  Windows
+  Unix
+
+CC:
+  INTEL
+  MSVC
+  GNU
+  WATCOM
+  PCC
+  SUN