CMake: avoid if() around the whole contents of plugin CMakeLists.txt

Just don't call add_subdirectory() if the build flag is not set.

CMakeLists.txt

@@ -146,11 +146,7 @@ add_subdirectory(src)
 add_subdirectory(examples)
 add_subdirectory(doc)
 
-add_subdirectory(addon/doxmlparser)
-add_subdirectory(addon/doxyapp)
-add_subdirectory(addon/doxyparse)
-add_subdirectory(addon/doxysearch)
-add_subdirectory(addon/doxywizard)
+add_subdirectory(addon)
 
 enable_testing()
 add_subdirectory(testing)

addon/CMakeLists.txt

@@ -0,0 +1,17 @@
+add_subdirectory(doxmlparser)
+
+if (build_app)
+    add_subdirectory(doxyapp)
+endif ()
+
+if (build_parse)
+    add_subdirectory(doxyparse)
+endif ()
+
+if (build_search)
+    add_subdirectory(doxysearch)
+endif ()
+
+if (build_wizard)
+    add_subdirectory(doxywizard)
+endif ()

addon/doxyapp/CMakeLists.txt

@@ -1,5 +1,3 @@
-if (build_app)
-
 # configvalues.h
 add_custom_command(
     COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_SOURCE_DIR}/src/configgen.py -maph ${CMAKE_SOURCE_DIR}/src/config.xml > ${GENERATED_SRC}/configvalues.h
@@ -35,5 +33,3 @@ ${CLANG_LIBS}
 )
 
 install(TARGETS doxyapp DESTINATION bin)
-
-endif()

addon/doxyparse/CMakeLists.txt

@@ -1,5 +1,3 @@
-if (build_parse)
-
 # configvalues.h
 add_custom_command(
     COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_SOURCE_DIR}/src/configgen.py -maph ${CMAKE_SOURCE_DIR}/src/config.xml > ${GENERATED_SRC}/configvalues.h
@@ -35,5 +33,3 @@ ${CLANG_LIBS}
 )
 
 install(TARGETS doxyparse DESTINATION bin)
-
-endif()

addon/doxysearch/CMakeLists.txt

@@ -1,5 +1,3 @@
-if (build_search)
-
 find_package(Xapian REQUIRED)
 find_package(ZLIB REQUIRED)
 
@@ -32,5 +30,3 @@ target_link_libraries(doxysearch.cgi
 )
 
 install(TARGETS doxyindexer doxysearch.cgi DESTINATION bin)
-
-endif()

addon/doxywizard/CMakeLists.txt

@@ -1,5 +1,3 @@
-if (build_wizard)
-
 # search for Qt5
 if (NOT force_qt4)
   find_package(Qt5Core QUIET CONFIG)
@@ -112,5 +110,3 @@ ${QT_LIBRARIES} ${QT_QTMAIN_LIBRARY}
 )
 
 install(TARGETS doxywizard DESTINATION bin)
-
-endif()