Add isce2 applications to $PATH

applications/CMakeLists.txt

@@ -27,3 +27,14 @@ set(files
 
 install(PROGRAMS ${files}
         DESTINATION ${ISCE2_PKG}/applications)
+
+# Symlink apps into PREFIX/bin so they are on the $PATH
+install(CODE "execute_process(COMMAND ${CMAKE_COMMAND} -E make_directory \
+    ${CMAKE_INSTALL_PREFIX}/bin)"
+    )
+foreach(file ${files})
+    install(CODE "execute_process(COMMAND ${CMAKE_COMMAND} -E create_symlink \
+        ${CMAKE_INSTALL_PREFIX}/${ISCE2_PKG}/applications/${file} \
+        ${CMAKE_INSTALL_PREFIX}/bin/${file})"
+        )
+endforeach()