CMake Docs: Fix User-Guidance (Link) (AMReX-Codes#2990)

Update the user-guidance on CMake dependency linking to CMake 3.0+ (anno. 2014+). Seen in AMReX-Codes#2978
Thierry992 · Oct 15, 2022 · 9a3cd5d · 9a3cd5d
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diff --git a/Docs/sphinx_documentation/source/BuildingAMReX.rst b/Docs/sphinx_documentation/source/BuildingAMReX.rst
@@ -584,7 +584,7 @@ the following line in the appropriate CMakeLists.txt file:
 
 ::
 
-    target_link_libraries( <your-target-name>  AMReX::<amrex-target-name> )
+    target_link_libraries( <your-target-name> PUBLIC AMReX::<amrex-target-name> )
 
 
 In the above snippet, ``<amrex-target-name>`` is any of the targets listed in the table below.
@@ -709,7 +709,7 @@ As an example, consider the following CMake code:
 ::
 
     find_package(AMReX REQUIRED 3D EB)
-    target_link_libraries( Foo  AMReX::amrex AMReX::Flags_CXX )
+    target_link_libraries( Foo PUBLIC AMReX::amrex )
 
 The code in the snippet above checks whether an AMReX installation with 3D and Embedded Boundary support
 is available on the system. If so, AMReX is linked to target ``Foo`` and AMReX flags preset is used

diff --git a/Docs/sphinx_documentation/source/GPU.rst b/Docs/sphinx_documentation/source/GPU.rst
@@ -315,7 +315,7 @@ we provide the helper function ``setup_target_for_cuda_compilation()``:
    setup_target_for_cuda_compilation(my_target)
 
    # Link against amrex
-   target_link_libraries(my_target AMReX::amrex)
+   target_link_libraries(my_target PUBLIC AMReX::amrex)