Restore original build scripts as needed

Author: attipaci

README.md

@@ -2,9 +2,9 @@
 
 # cspice-sharedlib
 
-Shell script to build the [NAIF CSPICE Toolkit](https://naif.jpl.nasa.gov/naif/toolkit.html) with 
-its shared library (`libcspice.so[.1]`), and dynamically link executable instead of the normal 
-static libraries and static linking of the upstream distribution.
+Shell script to build the [NAIF CSPICE Toolkit](https://naif.jpl.nasa.gov/naif/toolkit.html) as 
+a shared library (`libcspice.so[.1]`) and dynamically linked executables instead of the normal 
+static libraries and static linking used by the the upstream distribution.
 
 Author: Attila Kovacs `<attila.kovacs[AT]cfa.harvard.edu>`
 Version: 0.9

cspice-sharedlib.sh

@@ -43,8 +43,14 @@ cd src
 
 for component in * ; do
   if [ -d $component ] ; then
-    # back up the build script
-    cp -a $component/mkprodct.csh $component/mkprodct.bak
+  
+    if [ -f $component/mkproduct.bak ] ; then
+      # restore original scripts if needed
+      cp $component/mkprodct.bak $component/mkprodct.csh
+    elif [ -f $component/mkproduct.csh ] ; then
+      # back up the original build script
+      cp -a $component/mkprodct.csh $component/mkprodct.bak
+    fi
 
     # Don't used default build for static libs or cookbook examples. 
     # We don't package these
@@ -105,10 +111,11 @@ csh makeall.csh
 echo "Restoring original build scripts..."
 for component in * ; do
   if [ -f $component/mkproduct.bak ] ; then
-    # back up the build script
     mv $component/mkprodct.bak $component/mkprodct.csh
   fi
 done 
 
+# ----------------------------------------------------------------------------
+# Done.
 echo "All done."