diff --git a/3rdparty/boost/Makefile.am b/3rdparty/boost/Makefile.am
index 36b1699736..c177cd28d9 100644
--- a/3rdparty/boost/Makefile.am
+++ b/3rdparty/boost/Makefile.am
@@ -14,19 +14,6 @@ EXTRA_DIST = boost \
 AM_CPPFLAGS += -DBOOST_USER_CONFIG="<config.h>" 
 AM_CPPFLAGS +=  $(BOOST_INCLUDES)
 
-# This version is more than three times faster than the one below
-
-if MONOLITHIC_BOOST
-
-liblyxboost_a_SOURCES = \
-	lyxboost.cpp \
-	libs/regex/src/instances.cpp \
-	libs/regex/src/cpp_regex_traits.cpp \
-	libs/regex/src/c_regex_traits.cpp \
-	libs/regex/src/wc_regex_traits.cpp
-
-else
-
 liblyxboost_a_SOURCES = \
 	libs/regex/src/internals.hpp \
 	libs/regex/src/c_regex_traits.cpp \
@@ -45,5 +32,4 @@ liblyxboost_a_SOURCES = \
 	libs/regex/src/winstances.cpp \
 	libs/regex/src/static_mutex.cpp
 
-endif #MONOLITHIC_BOOST
 
diff --git a/3rdparty/boost/lyxboost.cpp b/3rdparty/boost/lyxboost.cpp
deleted file mode 100644
index cfb27a90fe..0000000000
--- a/3rdparty/boost/lyxboost.cpp
+++ /dev/null
@@ -1,13 +0,0 @@
-//#include "libs/regex/src/cpp_regex_traits.cpp"
-//#include "libs/regex/src/c_regex_traits.cpp"
-#include "libs/regex/src/cregex.cpp"
-#include "libs/regex/src/fileiter.cpp"
-//#include "libs/regex/src/instances.cpp"
-#include "libs/regex/src/regex.cpp"
-#include "libs/regex/src/regex_raw_buffer.cpp"
-#include "libs/regex/src/regex_traits_defaults.cpp"
-#include "libs/regex/src/w32_regex_traits.cpp"
-#include "libs/regex/src/posix_api.cpp"
-#include "libs/regex/src/wide_posix_api.cpp"
-#include "libs/regex/src/regex_debug.cpp"
-#include "libs/regex/src/winstances.cpp"
diff --git a/INSTALL b/INSTALL
index 8e2127c472..d19159fb6e 100644
--- a/INSTALL
+++ b/INSTALL
@@ -234,10 +234,6 @@ The following options allow you to tweak the generated code more precisely (see
     compile --with-included-hunspell or --disable-stdlib-debug when
     linking development versions against your system's hunspell library.
 
-  o --enable-monolithic-build[=boost,client,insets,mathed,core,tex2lyx,frontend-qt4]
-    that enables monolithic build of the given parts of the source
-    code. This should reduce the compilation time provided you have
-    enough memory (>500MB).
 
 
 Compiling and installing LyX
diff --git a/configure.ac b/configure.ac
index 4e04765692..703d267836 100644
--- a/configure.ac
+++ b/configure.ac
@@ -34,28 +34,6 @@ save_PACKAGE=$PACKAGE
 AM_INIT_AUTOMAKE([foreign dist-bzip2 no-define 1.8 tar-ustar subdir-objects])
 PACKAGE=$save_PACKAGE
 
-# Allow to build some parts of the code as one big chunk
-m4_define([ALLPARTS],[boost,client,insets,mathed,core,tex2lyx,frontend_qt])
-AC_ARG_ENABLE(monolithic-build,
-  AC_HELP_STRING([--enable-monolithic-build@<:@=LIST@:>@],
-		[Use monolithic build for modules in LIST (default: ALLPARTS)]),
-  [test "$enable_monolithic_build" = yes && enable_monolithic_build="ALLPARTS"
-   test "$enable_monolithic_build" = no && enable_monolithic_build=
-   IFS="${IFS=	}"; ac_save_ifs="$IFS"; IFS=" ,"
-   for i in $enable_monolithic_build ; do
-       eval "enable_monolithic_$i=yes"
-   done
-   IFS="$ac_save_ifs"],
-  [enable_monolithic_build=])
-
-AM_CONDITIONAL(MONOLITHIC_BOOST, test "x$enable_monolithic_boost" = "xyes")
-AM_CONDITIONAL(MONOLITHIC_CLIENT, test "x$enable_monolithic_client" = "xyes")
-AM_CONDITIONAL(MONOLITHIC_INSETS, test "x$enable_monolithic_insets" = "xyes")
-AM_CONDITIONAL(MONOLITHIC_MATHED, test "x$enable_monolithic_mathed" = "xyes")
-AM_CONDITIONAL(MONOLITHIC_CORE, test "x$enable_monolithic_core" = "xyes")
-AM_CONDITIONAL(MONOLITHIC_TEX2LYX, test "x$enable_monolithic_tex2lyx" = "xyes")
-AM_CONDITIONAL(MONOLITHIC_FRONTEND_QT, test "x$enable_monolithic_frontend_qt" = "xyes")
-
 ### Set the execute permissions of the various scripts correctly
 for file in config/install-sh ; do
   chmod 755 ${srcdir}/${file}
diff --git a/src/Makefile.am b/src/Makefile.am
index 28592fb0a2..e338f9951c 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -322,22 +322,8 @@ lyx_commit_hash.h: update_commit_hash
 BUILT_SOURCES = lyx_commit_hash.h
 CLEANFILES = lyx_commit_hash.h
 
-lyxcore.cpp:
-	$(AM_V_GEN)for file in $(SOURCEFILESCORE) ; do echo '#include "'$${file}'"' ; done >$@
-
-if MONOLITHIC_CORE
-
-BUILT_SOURCES += lyxcore.cpp $(STANDALONEFILES)
-CLEANFILES += lyxcore.cpp
-
-nodist_liblyxcore_a_SOURCES = lyxcore.cpp
-liblyxcore_a_SOURCES = $(STANDALONEFILES) $(HEADERFILESCORE)
-
-else
-
 liblyxcore_a_SOURCES = $(SOURCEFILESCORE) $(STANDALONEFILES) $(HEADERFILESCORE)
 
-endif
 
 #########################  Qt stuff  ##############################
 
@@ -541,22 +527,8 @@ HEADERFILESMATHED = \
 	mathed/MathSupport.h \
 	mathed/TextPainter.h
 
-lyxmathed.cpp:
-	$(AM_V_GEN)for file in $(SOURCEFILESMATHED) ; do echo '#include "'$${file}'"' ; done >$@
-
-if MONOLITHIC_MATHED
-
-BUILT_SOURCES += lyxmathed.cpp
-CLEANFILES += lyxmathed.cpp
-
-nodist_liblyxmathed_a_SOURCES = lyxmathed.cpp
-liblyxmathed_a_SOURCES = $(HEADERFILESMATHED)
-
-else
-
 liblyxmathed_a_SOURCES = $(SOURCEFILESMATHED) $(HEADERFILESMATHED)
 
-endif
 
 ############################### Insets  ##############################
 
@@ -680,23 +652,8 @@ HEADERFILESINSETS = \
 	insets/InsetVSpace.h \
 	insets/InsetWrap.h
 
-lyxinsets.cpp:
-	$(AM_V_GEN)for file in $(SOURCEFILESINSETS) ; do echo '#include "'$${file}'"' ; done >$@
-
-if MONOLITHIC_INSETS
-
-BUILT_SOURCES += lyxinsets.cpp
-CLEANFILES += lyxinsets.cpp
-
-nodist_liblyxinsets_a_SOURCES = lyxinsets.cpp
-liblyxinsets_a_SOURCES = $(HEADERFILESINSETS)
-
-else
-
 liblyxinsets_a_SOURCES = $(SOURCEFILESINSETS) $(HEADERFILESINSETS)
 
-endif
-
 
 ############################## Tests ##################################
 
diff --git a/src/client/Makefile.am b/src/client/Makefile.am
index f1d766bd26..b6b132e93f 100644
--- a/src/client/Makefile.am
+++ b/src/client/Makefile.am
@@ -26,21 +26,5 @@ SOURCEFILES = \
 
 HEADERFILES =
 
-
-lyxclient.cpp:
-	$(AM_V_GEN)for file in $(SOURCEFILES) ; do echo '#include "'$${file}'"' ; done >$@
-
-if MONOLITHIC_CLIENT
-
-AM_CPPFLAGS += -I$(srcdir)/.. $(BOOST_INCLUDES) $(ZLIB_INCLUDES)
-BUILT_SOURCES = lyxclient.cpp
-CLEANFILES += lyxclient.cpp
-
-nodist_lyxclient_SOURCES = lyxclient.cpp
-lyxclient_SOURCES = $(HEADERFILES)
-
-else
-
 lyxclient_SOURCES = $(SOURCEFILES) $(HEADERFILES)
 
-endif
diff --git a/src/frontends/qt4/Makefile.am b/src/frontends/qt4/Makefile.am
index a53e46afd7..4ffb351607 100644
--- a/src/frontends/qt4/Makefile.am
+++ b/src/frontends/qt4/Makefile.am
@@ -360,26 +360,9 @@ UIFILES = \
 
 nodist_liblyxqt4_a_SOURCES = Resources.cpp
 
-liblyxqt4.cpp:
-	$(AM_V_GEN)for file in $(SOURCEFILES) ; do echo '#include "'$${file}'"' ; done >$@
-
-if MONOLITHIC_FRONTEND_QT
-
-nodist_liblyxqt4_a_SOURCES += liblyxqt4.cpp
-liblyxqt4_a_SOURCES = \
-	$(MOCHEADER) \
-	$(NOMOCHEADER)
-
-BUILT_SOURCES += liblyxqt4.cpp
-CLEANFILES += liblyxqt4.cpp
-
-else
-
 liblyxqt4_a_SOURCES = \
 	$(SOURCEFILES) \
 	$(MOCHEADER) \
 	$(NOMOCHEADER)
 
-endif
-
 EXTRA_DIST = CMakeLists.txt $(UIFILES:%=ui/%)