Use PUBLIC_HEADER CMake target property to install API headers

Author: kblaschke

src/api/CMakeLists.txt

@@ -1,8 +1,19 @@
 add_library(projectM_api INTERFACE)
 
-target_sources(projectM_api
-        PRIVATE
+configure_file(version.h.in "${CMAKE_CURRENT_BINARY_DIR}/include/projectM-4/version.h" @ONLY)
+
+include(GenerateExportHeader)
+
+set(PROJECTM_EXPORT_HEADER "${CMAKE_CURRENT_BINARY_DIR}/include/projectM-4/projectM_export.h")
+
+generate_export_header(projectM_api
+        BASE_NAME projectM
+        EXPORT_FILE_NAME "${PROJECTM_EXPORT_HEADER}"
+        )
+
+set(PROJECTM_PUBLIC_HEADERS
         "${PROJECTM_EXPORT_HEADER}"
+        "${CMAKE_CURRENT_BINARY_DIR}/include/projectM-4/version.h"
         include/projectM-4/audio.h
         include/projectM-4/callbacks.h
         include/projectM-4/core.h
@@ -15,9 +26,15 @@ target_sources(projectM_api
         include/projectM-4/user_sprites.h
         )
 
+target_sources(projectM_api
+        PRIVATE
+        ${PROJECTM_PUBLIC_HEADERS}
+        )
+
 set_target_properties(projectM_api PROPERTIES
         EXPORT_NAME API
         FOLDER libprojectM
+        PUBLIC_HEADER "${PROJECTM_PUBLIC_HEADERS}"
         )
 
 target_include_directories(projectM_api
@@ -27,17 +44,6 @@ target_include_directories(projectM_api
         "$<INSTALL_INTERFACE:${PROJECTM_INCLUDE_DIR}>"
         )
 
-configure_file(version.h.in "${CMAKE_CURRENT_BINARY_DIR}/include/projectM-4/version.h" @ONLY)
-
-include(GenerateExportHeader)
-
-set(PROJECTM_EXPORT_HEADER "${CMAKE_CURRENT_BINARY_DIR}/include/projectM-4/projectM_export.h")
-
-generate_export_header(projectM_api
-        BASE_NAME projectM
-        EXPORT_FILE_NAME "${PROJECTM_EXPORT_HEADER}"
-        )
-
 add_library(libprojectM::API ALIAS projectM_api)
 
 
@@ -51,16 +57,4 @@ if(ENABLE_INSTALL)
             PUBLIC_HEADER DESTINATION "${PROJECTM_INCLUDE_DIR}/projectM-4" COMPONENT Devel
             )
 
-    install(FILES
-            "${CMAKE_CURRENT_BINARY_DIR}/include/projectM-4/projectM_export.h"
-            "${CMAKE_CURRENT_BINARY_DIR}/include/projectM-4/version.h"
-            DESTINATION "${PROJECTM_INCLUDE_DIR}/projectM-4"
-            COMPONENT Devel
-            )
-
-    install(DIRECTORY include/projectM-4
-            DESTINATION "${PROJECTM_INCLUDE_DIR}"
-            COMPONENT Devel
-            )
-
 endif()

src/playlist/CMakeLists.txt

@@ -2,7 +2,22 @@ if(NOT ENABLE_PLAYLIST)
     return()
 endif()
 
+set(PROJECTM_PLAYLIST_EXPORT_HEADER "${CMAKE_CURRENT_BINARY_DIR}/include/projectM-4/projectM_playlist_export.h")
+
+set(PROJECTM_PLAYLIST_PUBLIC_HEADERS
+        "${PROJECTM_PLAYLIST_EXPORT_HEADER}"
+        api/projectM-4/playlist.h
+        api/projectM-4/playlist_callbacks.h
+        api/projectM-4/playlist_core.h
+        api/projectM-4/playlist_filter.h
+        api/projectM-4/playlist_items.h
+        api/projectM-4/playlist_memory.h
+        api/projectM-4/playlist_playback.h
+        api/projectM-4/playlist_types.h
+        )
+
 add_library(projectM_playlist_main OBJECT
+        ${PROJECTM_PLAYLIST_PUBLIC_HEADERS}
         Filter.cpp
         Filter.hpp
         Item.cpp
@@ -11,14 +26,6 @@ add_library(projectM_playlist_main OBJECT
         Playlist.hpp
         PlaylistCWrapper.cpp
         PlaylistCWrapper.hpp
-        api/projectM-4/playlist.h
-        api/projectM-4/playlist_callbacks.h
-        api/projectM-4/playlist_core.h
-        api/projectM-4/playlist_filter.h
-        api/projectM-4/playlist_items.h
-        api/projectM-4/playlist_memory.h
-        api/projectM-4/playlist_playback.h
-        api/projectM-4/playlist_types.h
         )
 
 target_include_directories(projectM_playlist_main
@@ -45,6 +52,7 @@ set_target_properties(projectM_playlist PROPERTIES
         EXPORT_NAME playlist
         FOLDER libprojectM
         OUTPUT_NAME ${PROJECTM_LIBRARY_BASE_OUTPUT_NAME}-playlist
+        PUBLIC_HEADER "${PROJECTM_PLAYLIST_PUBLIC_HEADERS}"
         )
 
 target_include_directories(projectM_playlist
@@ -88,8 +96,6 @@ endif()
 
 include(GenerateExportHeader)
 
-set(PROJECTM_PLAYLIST_EXPORT_HEADER "${CMAKE_CURRENT_BINARY_DIR}/include/projectM-4/projectM_playlist_export.h")
-
 generate_export_header(projectM_playlist
         BASE_NAME projectM_playlist
         EXPORT_FILE_NAME "${PROJECTM_PLAYLIST_EXPORT_HEADER}"
@@ -107,17 +113,6 @@ if(ENABLE_INSTALL)
             PUBLIC_HEADER DESTINATION "${PROJECTM_INCLUDE_DIR}/projectM-4" COMPONENT Devel
             )
 
-    install(FILES
-            "${CMAKE_CURRENT_BINARY_DIR}/include/projectM-4/projectM_playlist_export.h"
-            DESTINATION "${PROJECTM_INCLUDE_DIR}/projectM-4"
-            COMPONENT Devel
-            )
-
-    install(DIRECTORY api/projectM-4
-            DESTINATION "${PROJECTM_INCLUDE_DIR}"
-            COMPONENT Devel
-            )
-
 
     # For use from an installed package (system install, vcpkg, homebrew etc.)
     include(CMakePackageConfigHelpers)