gentoo-overlay/dev-cpp/elfio/files/elfio-3.12-gnuinstalldirs-docdir.patch

--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -143,7 +143,7 @@ if(IS_TOP_PROJECT)
     set(CPACK_SOURCE_IGNORE_FILES "/.git/;/.github/;/.vscode/;/build;/.clang-format;/.gitignore;/.travis.yml;/doc/images/;/doc/site;/doc/elfio.docx;/examples/sudo_gdb.sh;/tests")
 
     install(FILES ${CPACK_RESOURCE_FILE_README} ${CPACK_RESOURCE_FILE_LICENSE}
-        DESTINATION share/docs/${PROJECT_NAME})
+        DESTINATION ${CMAKE_INSTALL_DOCDIR})
 
     include(CPack)
 endif()