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+SOFA-Issue: 2020-07-21
+
+This is the IAU Standards of Fundamental Astronomy (SOFA) Libraries product, 
+issued on 2020-07-21.  The tag `SOFA-Issue' above defines this release and 
+differentiates it from previous or subsequent releases of the SOFA product.
+The 00READ.ME file must remain with this distribution set.
+
+Changes made since the previous release are noted in the file changes.lis. 
+
+Notes:
+
+1/  Unix users:  The distribution set contains a simple makefile which 
+    can be used to create a single object library for the SOFA Libraries.
+    To build the object library:
+
+    a/  Examine the makefile to be sure definition of the C compiler
+        is correct for your system.  You need an ANSI standard compliant
+        C compiler.  Edit the CCOMPC macro in the makefile as necessary.
+
+    b/  To create libsofa.a, execute make:
+
+        % make
+
+        (where % is the shell prompt).
+
+    c/  To remove the object files:
+
+        % make clean
+
+    To link with the SOFA library, include the library in the compile/link
+    command in the normal Unix fashion, eg:
+
+        % gcc myprog.c -o myprog libsofa.a
+
+    You should specify the appropriate C compiler name for `gcc'
+    in the above command sequence.
+
+
+2/  Windows/DOS/Mac users:  There is no `build' procedure to create a linkable
+    object library or DLL for the SOFA Libraries.  This is due to the many
+    different C compilers and development environments available on
+    Windows/DOS and Mac machines.  
+
+    To use the SOFA routines with your program(s), you must use your preferred
+    development environment to create the appropriate library or DLL.
+
+IAU SOFA Center
+2020/07/21