SDL_rtf: cmake: install headers using install(FILES)

SDL Commits
1 
From d7d0faae9aabe75396209f4788475209a7421a32 Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <[EMAIL REDACTED]>
Date: Sat, 23 Jul 2022 17:18:54 +0200
Subject: [PATCH] cmake: install headers using install(FILES)

---
 CMakeLists.txt | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5296cca..5048a62 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -103,7 +103,6 @@ if(WIN32 AND SDL2RTF_BUILD_SHARED_LIBS)
 endif()
 set_target_properties(SDL2_rtf PROPERTIES
     DEFINE_SYMBOL DLL_EXPORT
-    PUBLIC_HEADER SDL_rtf.h
     EXPORT_NAME ${sdl2_rtf_export_name}
     C_VISIBILITY_PRESET "hidden"
 )
@@ -167,7 +166,10 @@ if(SDL2RTF_INSTALL)
         ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}" COMPONENT devel
         LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}" COMPONENT library
         RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}" COMPONENT library
-        PUBLIC_HEADER DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/SDL2" COMPONENT devel
+    )
+    install(
+        FILES "${CMAKE_CURRENT_SOURCE_DIR}/SDL_rtf.h"
+        DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/SDL2" COMPONENT DEVEL
     )
 
     if(WIN32 AND NOT MINGW)