diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog
index 82c124f8ece..93cdcda3284 100644
--- a/libgcc/ChangeLog
+++ b/libgcc/ChangeLog
@@ -1,3 +1,9 @@
+2019-06-05  Yoshinori Sato  <ysato@users.sourceforge.jp>
+
+	* config.host (rx-*-linux*): Add t-fdpbit to tmake_file
+	Add appropriate tm_file clause as well.
+	* config/rx/t-rx (HOST_LIBGCC2_CFLAGS): Remove.
+
 2019-06-05  James Clarke  <jrtc27@jrtc27.com>
 
 	* config/ia64/crtbegin.S (__dso_handle): Put in .sdata/.sbss
diff --git a/libgcc/config.host b/libgcc/config.host
index ff2f0fa1e58..d75e2b5d7aa 100644
--- a/libgcc/config.host
+++ b/libgcc/config.host
@@ -1212,7 +1212,8 @@ rx-*-elf)
 	tm_file="$tm_file rx/rx-abi.h rx/rx-lib.h"
 	;;
 rx-*-linux*)
-	tmake_file="rx/t-rx"
+	tmake_file="rx/t-rx t-fdpbit"
+	tm_file="$tm_file rx/rx-lib.h"
 	;;
 s390-*-linux*)
 	tmake_file="${tmake_file} s390/t-crtstuff s390/t-linux s390/32/t-floattodi t-stack s390/t-stack-s390"
diff --git a/libgcc/config/rx/t-rx b/libgcc/config/rx/t-rx
index 34cdc97cc03..ace3b16f39e 100644
--- a/libgcc/config/rx/t-rx
+++ b/libgcc/config/rx/t-rx
@@ -23,7 +23,6 @@
 # the normal libgcc sources:
 
 LIB2ADD = $(srcdir)/config/rx/rx-abi-functions.c
-HOST_LIBGCC2_CFLAGS += -DDF=SF
 
 
 # We need special handling of the floating point conversion