diff --git a/development/cmake/CMakeLists.txt b/development/cmake/CMakeLists.txt
index 65009f0d96..b18e0928b7 100644
--- a/development/cmake/CMakeLists.txt
+++ b/development/cmake/CMakeLists.txt
@@ -1,3 +1,4 @@
+
 # This file is part of LyX, the document processor.
 # Licence details can be found in the file COPYING.
 #
@@ -19,12 +20,14 @@ set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS true)
 # is checked
 set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/modules")
 set(EXECUTABLE_OUTPUT_PATH  ${CMAKE_BINARY_DIR}/bin)
+set(LIBRARY_OUTPUT_PATH  ${CMAKE_BINARY_DIR}/lib)
 
 
 option(lyxinstall "Build install projects/rules" ON)
 
 
 
+
 # Supress regeneration
 set(CMAKE_SUPPRESS_REGENERATION TRUE)
 
@@ -119,6 +122,7 @@ if(merge OR merge_rebuild)
 	message(STATUS "")
 	message(STATUS "All *.cpp files of a project are merged into two files, disable with -Dmerge=0")
 	message(STATUS "")
+	add_definitions(-DLYX_MERGED_BUILD)
 else()
 	set(merge 0 CACHE TYPE STRING FORCE)
 	set(MERGE_FILES 0 CACHE TYPE STRING FORCE)
diff --git a/development/cmake/config.h.cmake b/development/cmake/config.h.cmake
index ab3e539ef3..3022bef10e 100644
--- a/development/cmake/config.h.cmake
+++ b/development/cmake/config.h.cmake
@@ -42,3 +42,38 @@
 #cmakedefine PATH_MAX ${PATH_MAX}
 
 #endif
+
+
+// cleanup global namespace
+#ifdef ColorMode
+#undef ColorMode
+#endif
+
+#ifdef FocusOut
+#undef FocusOut
+#endif
+
+#ifdef FocusIn
+#undef FocusIn
+#endif
+
+#ifdef KeyRelease
+#undef KeyRelease
+#endif
+
+#ifdef CursorShape
+#undef CursorShape
+#endif
+
+#ifdef IGNORE
+#undef IGNORE
+#endif
+
+#ifdef GrayScale
+#undef GrayScale
+#endif
+
+#ifdef Status
+#undef Status
+#endif
+
diff --git a/development/cmake/src/client/CMakeLists.txt b/development/cmake/src/client/CMakeLists.txt
index 3442a902e3..8df2da675b 100644
--- a/development/cmake/src/client/CMakeLists.txt
+++ b/development/cmake/src/client/CMakeLists.txt
@@ -21,7 +21,7 @@ target_link_libraries(${_lyxclient}
 	support
 	${Lyx_Boost_Libraries}
 	${LIBINTL_LIBRARIES}
-        ${ICONV_LIBRARY}
+	${ICONV_LIBRARY}
 	${QT_QTCORE_LIBRARY}
 	${QT_QTGUI_LIBRARY}
 	)
diff --git a/development/cmake/src/support/CMakeLists.txt b/development/cmake/src/support/CMakeLists.txt
index 9b40da0c65..6e00386b75 100644
--- a/development/cmake/src/support/CMakeLists.txt
+++ b/development/cmake/src/support/CMakeLists.txt
@@ -54,13 +54,16 @@ if(NOT MERGE_FILES)
 	set(support_headers ${support_headers} ${support_mythes_headers} ${support_linkback_headers})
 	add_library(support ${library_type} ${support_sources} ${support_headers} ${dont_merge})
 else()
+	# GCC bug: gcc resolves ::bind as boost::bind
+	list(REMOVE_ITEM support_sources ${TOP_SRC_DIR}/src/support/socktools.cpp)
+	set(support_separate ${TOP_SRC_DIR}/src/support/socktools.cpp)
 	lyx_const_touched_files(_allinone  support_sources)
-		set(depends_moc ${support_headers})
+	set(depends_moc ${support_headers})
 	set_source_files_properties(_allinone_const.C
 		PROPERTIES OBJECT_DEPENDS "${depends_moc}")
 	set_source_files_properties(_allinone_touched.C
 		PROPERTIES OBJECT_DEPENDS "${depends_moc}")
-	add_library(support ${library_type} ${_allinone_files}
+	add_library(support ${library_type} ${_allinone_files} ${support_separate}
 		${support_mythes_sources} ${support_linkback_sources} ${support_headers} ${dont_merge})
 endif()
 
diff --git a/src/frontends/qt4/GuiHyperlink.cpp b/src/frontends/qt4/GuiHyperlink.cpp
index 8323b65ff3..60b0fe430e 100644
--- a/src/frontends/qt4/GuiHyperlink.cpp
+++ b/src/frontends/qt4/GuiHyperlink.cpp
@@ -21,6 +21,18 @@
 #include <QLineEdit>
 #include <QPushButton>
 
+#ifdef LYX_MERGED_BUILD
+// GCC couldn't find operator==
+namespace lyx {
+	bool operator==(lyx::docstring & d, char const * c) 
+		{ return lyx::operator ==(d, c); }
+	namespace frontend {
+		bool operator==(lyx::docstring & d, char const * c) 
+		  { return lyx::operator ==(d, c); }
+	}
+}
+#endif
+
 
 namespace lyx {
 namespace frontend {
diff --git a/src/frontends/qt4/GuiListings.cpp b/src/frontends/qt4/GuiListings.cpp
index 9bb8f05dba..6591b5550c 100644
--- a/src/frontends/qt4/GuiListings.cpp
+++ b/src/frontends/qt4/GuiListings.cpp
@@ -44,7 +44,7 @@ namespace frontend {
 /////////////////////////////////////////////////////////////////////
 
 
-char const * languages[] =
+char const * languages_supported[] =
 { "no language", "ABAP", "ACSL", "Ada", "ALGOL", "Assembler", "Awk", "bash", "Basic", "C",
   "C++", "Caml", "Clean", "Cobol", "Comal 80", "command.com", "Comsol", "csh", "Delphi",
   "Eiffel", "Elan", "erlang", "Euphoria", "Fortran", "Gnuplot", "Haskell", "HTML", "IDL", "inform",
@@ -213,7 +213,7 @@ GuiListings::GuiListings(GuiView & lv)
 	connect(bypassCB, SIGNAL(clicked()),
 		this, SLOT(setListingsMsg()));
 
-	for (int n = 0; languages[n][0]; ++n)
+	for (int n = 0; languages_supported[n][0]; ++n)
 		languageCO->addItem(qt_(languages_gui[n]));
 
 	for (int n = 0; font_styles[n][0]; ++n)
@@ -251,7 +251,7 @@ void GuiListings::change_adaptor()
 
 string GuiListings::construct_params()
 {
-	string language = languages[qMax(0, languageCO->currentIndex())];
+	string language = languages_supported[qMax(0, languageCO->currentIndex())];
 	string dialect;
 	string const dialect_gui = fromqstr(dialectCO->currentText());
 	if (dialectCO->currentIndex() > 0) {
@@ -412,7 +412,7 @@ void GuiListings::on_languageCO_currentIndexChanged(int index)
 	// 0 is "no dialect"
 	int default_dialect = 0;
 	dialectCO->addItem(qt_("No dialect"));
-	string const language = languages[index];
+	string const language = languages_supported[index];
 
 	for (size_t i = 0; i != nr_dialects; ++i) {
 		if (language == dialects[i].language) {
@@ -448,7 +448,7 @@ void GuiListings::updateContents()
 	// set default values
 	listingsTB->setPlainText(
 		qt_("Input listing parameters on the right. Enter ? for a list of parameters."));
-	languageCO->setCurrentIndex(findToken(languages, "no language"));
+	languageCO->setCurrentIndex(findToken(languages_supported, "no language"));
 	dialectCO->setCurrentIndex(0);
 	floatCB->setChecked(false);
 	placementLE->clear();
@@ -489,7 +489,7 @@ void GuiListings::updateContents()
 			} else {
 				language = arg;
 			}
-			int n = findToken(languages, language);
+			int n = findToken(languages_supported, language);
 			if (n >= 0) {
 				languageCO->setCurrentIndex(n);
 				in_gui = true;
diff --git a/src/frontends/qt4/GuiView.cpp b/src/frontends/qt4/GuiView.cpp
index fe0c201b8d..e5556b1bea 100644
--- a/src/frontends/qt4/GuiView.cpp
+++ b/src/frontends/qt4/GuiView.cpp
@@ -2722,7 +2722,8 @@ void GuiView::dispatch(FuncRequest const & cmd, DispatchResult & dr)
 		case LFUN_BUFFER_EXPORT: {
 			if (!doc_buffer)
 				break;
-			if (cmd.argument() == "custom") {
+			// GCC only sees strfwd.h when building merged
+			if (::lyx::operator==(cmd.argument(), "custom")) {
 				dispatch(FuncRequest(LFUN_DIALOG_SHOW, "sendto"), 
 					 dr);
 				break;
diff --git a/src/support/strfwd.h b/src/support/strfwd.h
index 85dfed168f..fcd97f5685 100644
--- a/src/support/strfwd.h
+++ b/src/support/strfwd.h
@@ -69,6 +69,7 @@ extern odocstream & operator<<(odocstream &, char);
 
 docstring const & empty_docstring();
 std::string const & empty_string();
+bool operator==(docstring const &, char const *);
 
 } // namespace lyx