CMake: Fix wx-config library list with monolithic build

Closes https://github.com/wxWidgets/wxWidgets/pull/1132

build/cmake/config.cmake

@@ -93,7 +93,8 @@ function(wx_write_config)
     set(STD_BASE_LIBS_ALL xml net base)
     set(STD_GUI_LIBS_ALL xrc html qa adv core)
     foreach(lib IN ITEMS xrc webview stc richtext ribbon propgrid aui gl media html qa adv core xml net base)
-        if(TARGET ${lib})
+        list(FIND wxLIB_TARGETS ${lib} hasLib)
+        if (hasLib GREATER -1)
             wx_string_append(BUILT_WX_LIBS "${lib} ")
             list(FIND STD_BASE_LIBS_ALL ${lib} index)
             if (index GREATER -1)
@@ -130,6 +131,9 @@ function(wx_write_config)
     wx_get_dependencies(EXTRALIBS_MEDIA media)
     wx_get_dependencies(OPENGL_LIBS gl)
     set(DMALLOC_LIBS)
+    if(wxBUILD_MONOLITHIC)
+        wx_get_dependencies(WXCONFIG_LIBS mono)
+    endif()
 
     set(CC ${CMAKE_C_COMPILER})
     set(CXX ${CMAKE_CXX_COMPILER})

build/cmake/functions.cmake

@@ -286,6 +286,9 @@ function(wx_set_target_properties target_name is_base)
     wx_set_common_target_properties(${target_name})
 endfunction()
 
+# List of libraries added via wx_add_library() to use for wx-config
+set(wxLIB_TARGETS)
+
 # Add a wxWidgets library
 # wx_add_library(<target_name> [IS_BASE] <src_files>...)
 # first parameter is the name of the library
@@ -295,6 +298,9 @@ macro(wx_add_library name)
     cmake_parse_arguments(wxADD_LIBRARY "IS_BASE" "" "" ${ARGN})
     set(src_files ${wxADD_LIBRARY_UNPARSED_ARGUMENTS})
 
+    list(APPEND wxLIB_TARGETS ${name})
+    set(wxLIB_TARGETS ${wxLIB_TARGETS} PARENT_SCOPE)
+
     if(wxBUILD_MONOLITHIC AND NOT ${name} STREQUAL "mono")
         # collect all source files for mono library
         set(wxMONO_SRC_FILES ${wxMONO_SRC_FILES} ${src_files} PARENT_SCOPE)

build/cmake/lib/CMakeLists.txt

@@ -97,3 +97,6 @@ if(wxBUILD_MONOLITHIC)
     endforeach()
     wx_finalize_lib(mono)
 endif()
+
+# Propagate variable(s) to parent scope
+set(wxLIB_TARGETS ${wxLIB_TARGETS} PARENT_SCOPE)