option/cmakelists: make building with mecab optional

Add option MECAB_SUPPORT that allows Memento to be built without MeCab.
This will ON by default for now, but when #210 is merged, it will be OFF
by default.

CMakeLists.txt

@@ -60,6 +60,7 @@ list(
 	"$<$<BOOL:${APPIMAGE}>:-DAPPIMAGE=1>"
 	"$<$<BOOL:${APPBUNDLE}>:-DAPPBUNDLE=1>"
 	"$<$<BOOL:${OCR_SUPPORT}>:-DOCR_SUPPORT=1>"
+	"$<$<BOOL:${MECAB_SUPPORT}>:-DMECAB_SUPPORT=1>"
 )
 
 # Set Qt preprocessor settings
@@ -134,7 +135,9 @@ endif()
 # Dependencies
 find_package(JsonC REQUIRED)
 find_package(libzip REQUIRED)
-find_package(MeCab REQUIRED)
+if(MECAB_SUPPORT)
+	find_package(MeCab REQUIRED)
+endif()
 find_package(mpv REQUIRED)
 find_package(SQLite3 REQUIRED)
 if (UNIX AND NOT APPLE)

option/CMakeLists.txt

@@ -6,5 +6,7 @@ if(UNIX AND NOT APPLE)
 	option(APPIMAGE "Toggle when building for AppImages" OFF)
 endif()
 option(MAC_CROSSCOMPILE_X86 "Enables ARM machines to cross compile for x86" OFF)
+option(RELEASE_BUILD "Toggle to build with release settings" OFF)
+
 option(OCR_SUPPORT "Support for OCR through MangaOCR" OFF)
-option(RELEASE_BUILD "Toggle to build with release settings" OFF)
+option(MECAB_SUPPORT "Support for deconjugation with MeCab" ON)

src/dict/CMakeLists.txt

@@ -27,20 +27,26 @@ target_link_libraries(
     PUBLIC querygenerator
 )
 
-add_library(
-    mecabquerygenerator STATIC
-    mecabquerygenerator.cpp
-    mecabquerygenerator.h
-)
-target_compile_features(mecabquerygenerator PRIVATE cxx_std_17)
-target_compile_options(mecabquerygenerator PRIVATE ${MEMENTO_COMPILER_FLAGS})
-target_include_directories(mecabquerygenerator PRIVATE ${MEMENTO_INCLUDE_DIRS})
-target_link_libraries(
-    mecabquerygenerator
-    PRIVATE utils
-    PUBLIC MeCab::MeCab
-    PUBLIC querygenerator
-)
+if(MECAB_SUPPORT)
+    add_library(
+        mecabquerygenerator STATIC
+        mecabquerygenerator.cpp
+        mecabquerygenerator.h
+    )
+    target_compile_features(mecabquerygenerator PRIVATE cxx_std_17)
+    target_compile_options(
+        mecabquerygenerator PRIVATE ${MEMENTO_COMPILER_FLAGS}
+    )
+    target_include_directories(
+        mecabquerygenerator PRIVATE ${MEMENTO_INCLUDE_DIRS}
+    )
+    target_link_libraries(
+        mecabquerygenerator
+        PRIVATE utils
+        PUBLIC MeCab::MeCab
+        PUBLIC querygenerator
+    )
+endif()
 
 add_library(
     yomidbbuilder STATIC
@@ -76,13 +82,20 @@ add_library(
 target_compile_features(dictionary_db PUBLIC cxx_std_17)
 target_compile_options(dictionary_db PRIVATE ${MEMENTO_COMPILER_FLAGS})
 target_include_directories(dictionary_db PRIVATE ${MEMENTO_INCLUDE_DIRS})
+set(
+    DICTIONARY_DB_GENERATOR_LIBS
+    exactquerygenerator
+)
+if(MECAB_SUPPORT)
+    list(APPEND DICTIONARY_DB_GENERATOR_LIBS mecabquerygenerator)
+endif()
 target_link_libraries(
     dictionary_db
-    PRIVATE exactquerygenerator
-    PRIVATE mecabquerygenerator
+    PRIVATE ${DICTIONARY_DB_GENERATOR_LIBS}
     PRIVATE Qt6::Widgets
     PRIVATE querygenerator
     PRIVATE SQLite::SQLite3
     PRIVATE yomidbbuilder
     PUBLIC Qt6::Core
 )
+unset(DICTIONARY_DB_GENERATOR_LIBS)

src/dict/dictionary.cpp

@@ -29,7 +29,10 @@
 
 #include "databasemanager.h"
 #include "exactquerygenerator.h"
+
+#ifdef MECAB_SUPPORT
 #include "mecabquerygenerator.h"
+#endif // MECAB_SUPPORT
 
 #include "util/constants.h"
 #include "util/globalmediator.h"
@@ -72,6 +75,8 @@ void Dictionary::initDictionaryOrder()
 void Dictionary::initQueryGenerators()
 {
     m_generators.emplace_back(std::make_unique<ExactQueryGenerator>());
+
+#ifdef MECAB_SUPPORT
     m_generators.emplace_back(std::make_unique<MeCabQueryGenerator>());
     if (!m_generators.back()->valid())
     {
@@ -100,6 +105,7 @@ void Dictionary::initQueryGenerators()
 #endif
         );
     }
+#endif // MECAB_SUPPORT
 }
 
 Dictionary::~Dictionary()