README and cafe_version-py

cafe_version.py

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+# Converts cafe 'major' 'minor' 'revision'
+# to syntax for use in libcafe_la_LDFLAGS
+# in src/makefile.am
+#
+import sys
+
+if (len(sys.argv) != 4):
+    print('Usage: cafe_version_py major minor revision')
+    print('Usage: e.g. cafe_version.py 1.22.0 returns 23:0:22')
+    sys.exit()
+
+print(f'input args: {sys.argv}')
+print('Change the following in src/makefile.am')
+major = int(sys.argv[1])
+minor = int(sys.argv[2])
+rev = int(sys.argv[3])
+
+
+current = major+minor 
+revision = rev
+age = minor
+
+
+print(f'libcafe_la_LDFLAGS = -version-info {current}:{revision}:{age}')