--- a/opus/CMakeLists.txt
+++ b/opus/CMakeLists.txt
@@ -301,13 +301,22 @@
 get_library_version(OPUS_LIBRARY_VERSION OPUS_LIBRARY_VERSION_MAJOR)
 message(DEBUG "Opus library version: ${OPUS_LIBRARY_VERSION}")

+# Build-script inputs can be relative symlinks. Materialize public headers so
+# CMake does not preserve links that become dangling in the install prefix.
+foreach(header IN LISTS Opus_PUBLIC_HEADER)
+  get_filename_component(header_name "${header}" NAME)
+  set(install_header "${CMAKE_CURRENT_BINARY_DIR}/public_headers/${header_name}")
+  configure_file("${header}" "${install_header}" COPYONLY)
+  list(APPEND Opus_INSTALL_HEADERS "${install_header}")
+endforeach()
+
 set_target_properties(opus
                       PROPERTIES SOVERSION
                                  ${OPUS_LIBRARY_VERSION_MAJOR}
                                  VERSION
                                  ${OPUS_LIBRARY_VERSION}
                                  PUBLIC_HEADER
-                                 "${Opus_PUBLIC_HEADER}")
+                                 "${Opus_INSTALL_HEADERS}")

 target_include_directories(
   opus