Add Makefile.defs with common defs

Makefile.defs

@@ -0,0 +1,42 @@
+# Hide full compilation line:
+ifneq ($(V),1)
+  Q?=@
+endif
+# To see full command lines, use make V=1
+
+# been here
+DEFSBEENHERE = true
+
+CP = cp -a
+GZIP = gzip
+MKDIR = mkdir -p
+RM = rm -f
+RMDIR = rm -rf
+MV = mv
+TOUCH = touch
+FALSE = false
+TAR = tar
+TARFLAGS ?= -v --ignore-failed-read -r
+TARFLAGS += -C .. -f
+CROSS  ?= arm-none-eabi-
+CC = gcc
+CXX = g++
+LD = g++
+
+PATHSEP=/
+PREFIX ?=             /usr/local
+INSTALLBINRELPATH =   /bin/
+INSTALLSHARERELPATH = /share/proxmark3/
+INSTALLFWRELPATH =    /share/proxmark3/firmware/
+INSTALLTOOLSRELPATH = /share/proxmark3/tools/
+
+platform = $(shell uname)
+DETECTED_OS=$(platform)
+
+ifeq ($(platform),Darwin)
+    AR= /usr/bin/ar rcs
+    RANLIB= /usr/bin/ranlib
+else
+    AR= ar rcs
+    RANLIB= ranlib
+endif