Changes between Version 2 and Version 3 of FAQ_compilation

Timestamp:

Oct 11, 2013, 3:21:56 PM (11 years ago)

Author:

Marek Kurdej

Comment:

Added: Moc'ing QObject-based classes

FAQ_compilation

@@ -4 +4 @@
 
 === ```ComponentBase``` should be inherited AFTER ```QObject``` ===
-
 ==== Error message ====
 {{{
@@ -26 +25 @@
 }}}
 
-== GCC ==
+=== Class inheriting from ```QObject``` should be ```moc```-ed ===
+==== Error message ====
+
+{{{
+>Component.obj : error LNK2001: unresolved external symbol "public: static struct QMetaObject const pacpus::Component::staticMetaObject" (?staticMetaObject@Component@pacpus@@2UQMetaObject@@B)
+>Component.obj : error LNK2001: unresolved external symbol "public: virtual struct QMetaObject const * __thiscall pacpus::Component::metaObject(void)const " (?metaObject@Component@pacpus@@UBEPBUQMetaObject@@XZ)
+>Component.obj : error LNK2001: unresolved external symbol "public: virtual void * __thiscall pacpus::Component::qt_metacast(char const *)" (?qt_metacast@Component@pacpus@@UAEPAXPBD@Z)
+>Component.obj : error LNK2001: unresolved external symbol "public: virtual int __thiscall pacpus::Component::qt_metacall(enum QMetaObject::Call,int,void * *)" (?qt_metacall@Component@pacpus@@UAEHW4Call@QMetaObject@@HPAPAX@Z)
+}}}
+
+==== Solution ====
+
+* Check that you use ```moc``` tool on your class, i.e. file ```moc_Component.cpp``` is created and linked to the target.
+1. Add ```Component.h``` to CMake variable ```MOC_FILES```.
+2. Add ```${MOC_FILES}``` to the list of sources used by ```pacpus_add_library``` or ```pacpus_add_executable```.
 
 == Varia ==