diff --git a/Makefile.def b/Makefile.def
index 90d9653..d8e4c79 100644
--- a/Makefile.def
+++ b/Makefile.def
@@ -123,6 +123,8 @@ target_modules = { module= libsanitizer;
 		   bootstrap=true;
 		   lib_path=.libs;
 		   raw_cxx=true; };
+target_modules = { module= libcilkrts;
+		   lib_path=.libs; };
 target_modules = { module= libssp; lib_path=.libs; };
 target_modules = { module= newlib; };
 target_modules = { module= libgcc; bootstrap=true; no_check=true; };
@@ -489,6 +491,7 @@ dependencies = { module=all-m4; on=all-build-texinfo; };
 // on libgcc and newlib/libgloss.
 lang_env_dependencies = { module=libjava; cxx=true; };
 lang_env_dependencies = { module=libitm; cxx=true; };
+lang_env_dependencies = { module=libcilkrts; cxx=true; };
 lang_env_dependencies = { module=newlib; no_c=true; };
 lang_env_dependencies = { module=libgloss; no_c=true; };
 lang_env_dependencies = { module=libgcc; no_gcc=true; no_c=true; };
@@ -526,6 +529,8 @@ dependencies = { module=install-target-libgfortran; on=install-target-libquadmat
 dependencies = { module=install-target-libgfortran; on=install-target-libgcc; };
 dependencies = { module=install-target-libsanitizer; on=install-target-libstdc++-v3; };
 dependencies = { module=install-target-libsanitizer; on=install-target-libgcc; };
+dependencies = { module=install-target-libcilkrts; on=install-target-libstdc++-v3; };
+dependencies = { module=install-target-libcilkrts; on=install-target-libgcc; };
 dependencies = { module=install-target-libjava; on=install-target-libgcc; };
 dependencies = { module=install-target-libitm; on=install-target-libgcc; };
 dependencies = { module=install-target-libobjc; on=install-target-libgcc; };
diff --git a/libcilkrts/Makefile.am b/libcilkrts/Makefile.am
index ac93498..12ecd36 100644
--- a/libcilkrts/Makefile.am
+++ b/libcilkrts/Makefile.am
@@ -26,7 +26,7 @@ ACLOCAL_AMFLAGS = -I .. -I ../config
 
 # Compiler and linker flags.
 GENERAL_FLAGS = -I$(top_srcdir)/include -DIN_CILK_RUNTIME=1
-GENERAL_FLAGS += -fpic -O3 -fcilkplus
+GENERAL_FLAGS += -fcilkplus
 GENERAL_FLAGS += -DBUILD_USER=\"$(USER)\"
 GENERAL_FLAGS += -DBUILD_HOST=\"`hostname`\"
 AM_CFLAGS = $(GENERAL_FLAGS) -std=c99
@@ -75,3 +75,43 @@ cilkinclude_HEADERS =              \
   include/cilk/reducer_opxor.h     \
   include/cilk/reducer_ostream.h   \
   include/cilk/reducer_string.h
+
+# Work around what appears to be a GNU make bug handling MAKEFLAGS
+# values defined in terms of make variables, as is the case for CC and
+# friends when we are called from the top level Makefile.
+AM_MAKEFLAGS = \
+	"AR_FLAGS=$(AR_FLAGS)" \
+	"CC_FOR_BUILD=$(CC_FOR_BUILD)" \
+	"CFLAGS=$(CFLAGS)" \
+	"CXXFLAGS=$(CXXFLAGS)" \
+	"CFLAGS_FOR_BUILD=$(CFLAGS_FOR_BUILD)" \
+	"CFLAGS_FOR_TARGET=$(CFLAGS_FOR_TARGET)" \
+	"INSTALL=$(INSTALL)" \
+	"INSTALL_DATA=$(INSTALL_DATA)" \
+	"INSTALL_PROGRAM=$(INSTALL_PROGRAM)" \
+	"INSTALL_SCRIPT=$(INSTALL_SCRIPT)" \
+	"JC1FLAGS=$(JC1FLAGS)" \
+	"LDFLAGS=$(LDFLAGS)" \
+	"LIBCFLAGS=$(LIBCFLAGS)" \
+	"LIBCFLAGS_FOR_TARGET=$(LIBCFLAGS_FOR_TARGET)" \
+	"MAKE=$(MAKE)" \
+	"MAKEINFO=$(MAKEINFO) $(MAKEINFOFLAGS)" \
+	"PICFLAG=$(PICFLAG)" \
+	"PICFLAG_FOR_TARGET=$(PICFLAG_FOR_TARGET)" \
+	"SHELL=$(SHELL)" \
+	"RUNTESTFLAGS=$(RUNTESTFLAGS)" \
+	"exec_prefix=$(exec_prefix)" \
+	"infodir=$(infodir)" \
+	"libdir=$(libdir)" \
+	"prefix=$(prefix)" \
+	"includedir=$(includedir)" \
+	"AR=$(AR)" \
+	"AS=$(AS)" \
+	"LD=$(LD)" \
+	"LIBCFLAGS=$(LIBCFLAGS)" \
+	"NM=$(NM)" \
+	"PICFLAG=$(PICFLAG)" \
+	"RANLIB=$(RANLIB)" \
+	"DESTDIR=$(DESTDIR)"
+
+MAKEOVERRIDES=