Makefile: move the calculation of API_MAJOR advance. this fixes versi…

…oning lib for OSX

Makefile

@@ -181,6 +181,7 @@ LIBOBJ += MCInst.o
 
 
 PKGCFCGDIR = $(LIBDATADIR)/pkgconfig
+API_MAJOR=$(shell echo `grep -e CS_API_MAJOR include/capstone.h | grep -v = | awk '{print $$3}'` | awk '{print $$1}')
 VERSION_EXT =
 
 # OSX?
@@ -219,7 +220,6 @@ CFLAGS := $(CFLAGS:-fPIC=)
 # On Windows we need the shared library to be executable
 else
 # Linux, *BSD
-API_MAJOR=$(shell echo `grep -e CS_API_MAJOR include/capstone.h | grep -v = | awk '{print $$3}'` | awk '{print $$1}')
 EXT = so
 VERSION_EXT = $(EXT).$(API_MAJOR)
 AR_EXT = a