Namespace generated export headers (#9)

Signed-off-by: Juan Cruz Viotti <[email protected]>

README.markdown

@@ -108,8 +108,8 @@ following:
 
 In all cases:
 
-- An export file on the include path called `<name>_export.h`, if the library
-  is not header-only
+- An export file on the library include path called `<name>_export.h`, if the
+  library is not header-only
 - The version of the library corresponds to the project version, if the library
   is not header-only
 

cmake/noa/library.cmake

@@ -18,14 +18,15 @@ function(noa_library)
     set(INCLUDE_PREFIX "include/${NOA_LIBRARY_PROJECT}")
   endif()
 
+  set(EXPORT_HEADER_PATH "${CMAKE_CURRENT_BINARY_DIR}/${INCLUDE_PREFIX}/${NOA_LIBRARY_NAME}_export.h")
   if(NOT NOA_LIBRARY_VARIANT)
     set(PUBLIC_HEADER "${INCLUDE_PREFIX}/${NOA_LIBRARY_NAME}.h")
   else()
     set(PUBLIC_HEADER "../${INCLUDE_PREFIX}/${NOA_LIBRARY_NAME}.h")
   endif()
 
   if(NOA_LIBRARY_SOURCES)
-    set(ABSOLUTE_PRIVATE_HEADERS "${CMAKE_CURRENT_BINARY_DIR}/${NOA_LIBRARY_NAME}_export.h")
+    set(ABSOLUTE_PRIVATE_HEADERS "${EXPORT_HEADER_PATH}")
   else()
     set(ABSOLUTE_PRIVATE_HEADERS)
   endif()
@@ -100,15 +101,15 @@ function(noa_library)
   if(NOA_LIBRARY_SOURCES)
     include(GenerateExportHeader)
     generate_export_header(${TARGET_NAME}
-      EXPORT_FILE_NAME ${NOA_LIBRARY_NAME}_export.h)
+      EXPORT_FILE_NAME ${EXPORT_HEADER_PATH})
     set_target_properties(${TARGET_NAME}
       PROPERTIES
         SOVERSION "${PROJECT_VERSION_MAJOR}"
         VERSION "${PROJECT_VERSION}")
 
     # To find the generated files
     target_include_directories(${TARGET_NAME}
-      PUBLIC "$<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>")
+      PUBLIC "$<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/include>")
   endif()
 endfunction()