Mods: Curate exports and generate link stubs

`symgen exports` replaces -export_dynamic on Apple and curates
Android's dynamic symbols with a version script. `symgen stub` then
emits sdk/stub-{macos,ios,tvos}-<arch>, sdk/stub-android-<arch>.so,
and sdk/windows-<arch>.lib.

CMakeLists.txt

@@ -491,9 +491,12 @@ if (WIN32)
     target_link_libraries(dusklight PRIVATE Psapi)
 endif ()
 if (APPLE)
-    # Mods resolve game symbols from the executable at dlopen time.
-    target_link_options(dusklight PRIVATE -Wl,-export_dynamic)
-elseif (UNIX AND NOT ANDROID)
+    include(cmake/AppleExports.cmake)
+    setup_apple_exports(dusklight)
+elseif (ANDROID)
+    include(cmake/AndroidExports.cmake)
+    setup_android_exports(dusklight)
+elseif (UNIX)
     target_link_options(dusklight PRIVATE -rdynamic)
 endif ()
 

cmake/AndroidExports.cmake

@@ -36,7 +36,7 @@ function(setup_android_exports target)
             # TODO: src/dusk/ is NOT excluded: inline code in game headers
             # currently call into it (e.g. dusk::frame_interp::lookup_replacement).
             COMMAND "${SYMGEN_EXE}" exports
-            --rsp "${_rsp}"
+            "@${_rsp}"
             --out "${_vscript}"
             --format version-script
             --exclude cmake_pch
@@ -53,16 +53,10 @@ function(setup_android_exports target)
     target_link_options(${target} PRIVATE "-Wl,--version-script=${_vscript}")
 
     string(TOLOWER "${CMAKE_SYSTEM_PROCESSOR}" _arch)
-    if (_arch STREQUAL "aarch64")
-        set(_machine "arm64")
-    else ()
-        set(_machine "amd64")
-    endif ()
-
     set(_stub "${CMAKE_BINARY_DIR}/stub-android-${_arch}.so")
     add_custom_command(TARGET ${target} POST_BUILD
             COMMAND "${SYMGEN_EXE}" stub -f elf "$<TARGET_FILE:${target}>" -o "${_stub}"
-            --soname "$<TARGET_FILE_NAME:${target}>" --machine "${_machine}"
+            --soname "$<TARGET_FILE_NAME:${target}>" --arch "${_arch}"
             BYPRODUCTS "${_stub}"
             COMMENT "Generating dusklight link stub"
             VERBATIM)

cmake/AppleExports.cmake

@@ -44,7 +44,7 @@ function(setup_apple_exports target)
             # TODO: src/dusk/ is NOT excluded: inline code in game headers
             # currently call into it (e.g. dusk::frame_interp::lookup_replacement).
             COMMAND "${_symgen}" exports
-            --rsp "${_rsp}"
+            "@${_rsp}"
             --out "${_exp}"
             --exclude cmake_pch
             --exclude miniz

cmake/SymbolManifest.cmake

@@ -2,7 +2,7 @@ include_guard(GLOBAL)
 
 get_filename_component(_SYMBOL_MANIFEST_CMAKE_DIR "${CMAKE_CURRENT_LIST_FILE}" DIRECTORY)
 
-set(_SYMGEN_VERSION "1.1.1")
+set(_SYMGEN_VERSION "1.2.0")
 set(_SYMGEN_RELEASE_BASE_URL "https://github.com/encounter/symgen/releases/download/v${_SYMGEN_VERSION}")
 set(SYMGEN_PATH "" CACHE FILEPATH "Path to a symgen executable; empty downloads the pinned release")
 mark_as_advanced(SYMGEN_PATH)

cmake/WindowsExports.cmake

@@ -53,7 +53,7 @@ function(setup_windows_exports target)
             # TODO: src/dusk/ is NOT excluded: inline code in game headers
             # currently call into it (e.g. dusk::frame_interp::lookup_replacement).
             COMMAND "${_symgen}" def
-            --rsp "${_rsp}"
+            "@${_rsp}"
             --out "${_def}"
             --exclude cmake_pch
             --exclude miniz
@@ -82,9 +82,7 @@ function(setup_windows_exports target)
             COMMENT "Generating dusklight import library"
             VERBATIM)
     set(DUSK_GAME_IMPLIB "${_implib}" CACHE INTERNAL "Import library for Windows mod linking")
-    set(DUSK_GAME_DEF "${_def}" CACHE INTERNAL "Curated export .def for the game executable")
 
-    # Ship the import library as sdk/dusklight.lib in the install tree: mods may use it to
-    # compile against Dusklight without having to build the whole game. (See DUSK_GAME_IMPLIB)
-    install(FILES "${_implib}" DESTINATION sdk RENAME dusklight.lib)
+    string(TOLOWER "${CMAKE_SYSTEM_PROCESSOR}" _implib_arch)
+    install(FILES "${_implib}" DESTINATION sdk RENAME "windows-${_implib_arch}.lib")
 endfunction()