make shared library loader optional

Author: eagleoflqj

CMakeLists.txt

@@ -37,6 +37,7 @@ option(USE_FLATPAK_ICON "Use flatpak icon name for desktop files" Off)
 option(ENABLE_EMOJI "Enable emoji module" On)
 option(ENABLE_LIBUUID "Use libuuid for uuid generation" On)
 option(BUILD_SPELL_DICT "Build en_dict.fscd for English spell check" On)
+option(ENABLE_DL "Enable dynamic loading addons" On)
 set(NO_PREEDIT_APPS "gvim.*,wps.*,wpp.*,et.*" CACHE STRING "Disable preedit for follwing app by default.")
 
 if (ENABLE_EMOJI)
@@ -81,7 +82,14 @@ endif()
 if(${CMAKE_SYSTEM_NAME} MATCHES "BSD|DragonFly")
     find_package(LibKVM REQUIRED)
 endif()
-find_package(DL REQUIRED)
+
+if(ENABLE_DL)
+    find_package(DL REQUIRED)
+    set(DL_TARGET DL::DL)
+else()
+    add_definitions("-DFCITX_NO_DL")
+    set(DL_TARGET)
+endif()
 
 if (NOT TARGET LibIntl::LibIntl)
     find_package(LibIntl REQUIRED)

src/lib/fcitx-utils/CMakeLists.txt

@@ -47,7 +47,6 @@ set(FCITX_UTILS_SOURCES
     i18nstring.cpp
     event_common.cpp
     eventdispatcher.cpp
-    library.cpp
     fs.cpp
     standardpath.cpp
     unixfd.cpp
@@ -62,6 +61,10 @@ set(FCITX_UTILS_SOURCES
     keydata.cpp
     )
 
+if (ENABLE_DL)
+    list(APPEND FCITX_UTILS_SOURCES library.cpp)
+endif()
+
 set(FCITX_UTILS_HEADERS
     macros.h
     stringutils.h
@@ -129,7 +132,7 @@ target_include_directories(Fcitx5Utils PUBLIC
     $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/..>
     $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>
     $<INSTALL_INTERFACE:${CMAKE_INSTALL_FULL_INCLUDEDIR}/Fcitx5/Utils>)
-target_link_libraries(Fcitx5Utils PRIVATE DL::DL LibIntl::LibIntl Pthread::Pthread ${FMT_TARGET})
+target_link_libraries(Fcitx5Utils PRIVATE ${DL_TARGET} LibIntl::LibIntl Pthread::Pthread ${FMT_TARGET})
 if(LIBKVM_FOUND)
     target_link_libraries(Fcitx5Utils PRIVATE LibKVM::LibKVM)
 endif()

src/lib/fcitx/addoninfo.cpp

@@ -108,8 +108,13 @@ const I18NString &AddonInfo::comment() const {
 }
 
 const std::string &AddonInfo::type() const {
+#ifdef FCITX_NO_DL
+    static const std::string staticLibrary = "StaticLibrary";
+    return staticLibrary;
+#else
     FCITX_D();
     return d->addon->type.value();
+#endif
 }
 
 AddonCategory AddonInfo::category() const {

src/lib/fcitx/addonloader.cpp

@@ -14,6 +14,7 @@ namespace fcitx {
 
 AddonLoader::~AddonLoader() {}
 
+#ifndef FCITX_NO_DL
 SharedLibraryLoader::~SharedLibraryLoader() {}
 
 AddonInstance *SharedLibraryLoader::load(const AddonInfo &info,
@@ -67,6 +68,7 @@ AddonInstance *SharedLibraryLoader::load(const AddonInfo &info,
     }
     return nullptr;
 }
+#endif
 
 StaticLibraryLoader::StaticLibraryLoader(StaticAddonRegistry *registry_)
     : registry(registry_) {}

src/lib/fcitx/addonloader_p.h

@@ -17,6 +17,7 @@
 
 namespace fcitx {
 
+#ifndef FCITX_NO_DL
 class SharedLibraryFactory {
 public:
     SharedLibraryFactory(Library lib) : library_(std::move(lib)) {
@@ -50,6 +51,7 @@ class SharedLibraryLoader : public AddonLoader {
     std::unordered_map<std::string, std::unique_ptr<SharedLibraryFactory>>
         registry_;
 };
+#endif
 
 class StaticLibraryLoader : public AddonLoader {
 public:

src/lib/fcitx/addonmanager.cpp

@@ -250,7 +250,9 @@ void AddonManager::unregisterLoader(const std::string &name) {
 }
 
 void AddonManager::registerDefaultLoader(StaticAddonRegistry *registry) {
+#ifndef FCITX_NO_DL
     registerLoader(std::make_unique<SharedLibraryLoader>());
+#endif
     if (registry) {
         registerLoader(std::make_unique<StaticLibraryLoader>(registry));
     }