Merge topic 'doc-header-only'

2d5f2c9311 Help: Make cmake-buildsystem(7) header-only examples consistent

Acked-by: Kitware Robot <[email protected]>
Merge-request: !10333

Help/manual/cmake-buildsystem.7.rst

@@ -1513,7 +1513,7 @@ default header set along with the target:
 
   add_library(Eigen INTERFACE)
 
-  target_sources(Eigen INTERFACE
+  target_sources(Eigen PUBLIC
     FILE_SET HEADERS
       BASE_DIRS src
       FILES src/eigen.h src/vector.h src/matrix.h