diff --git a/openpower/package/hostboot/hostboot-0005-GCC-4.9-Make-compiler-use-ELFv1-ABI-and-use-O2.patch b/openpower/package/hostboot/hostboot-0005-GCC-4.9-Make-compiler-use-ELFv1-ABI-and-use-O2.patch
new file mode 100644
index 0000000..cc25c45
--- /dev/null
+++ b/openpower/package/hostboot/hostboot-0005-GCC-4.9-Make-compiler-use-ELFv1-ABI-and-use-O2.patch
@@ -0,0 +1,48 @@
+From 005cac73915ee6f6b67e9b01ae840b798c1fc80e Mon Sep 17 00:00:00 2001
+From: Andrew Geissler <andrewg@us.ibm.com>
+Date: Mon, 16 Feb 2015 13:43:51 -0600
+Subject: [PATCH] GCC 4.9: Make compiler use ELFv1 ABI and use -O2
+
+GCC4.9 defaults to ELFv2 ABI support but we do not have all
+of the needed tools to suppor this.
+GCC4.9 also does not work well with -O3 so I've had to
+knock us down to -O2 for now.
+
+Change-Id: Iacf49c46b1fb25776ba60d6506ccadff7b46bf60
+RTC: 123430
+---
+ src/build/mkrules/cflags.env.mk |    9 ++++++---
+ 1 files changed, 6 insertions(+), 3 deletions(-)
+
+diff --git a/src/build/mkrules/cflags.env.mk b/src/build/mkrules/cflags.env.mk
+index 8ca32b1..c729341 100644
+--- a/src/build/mkrules/cflags.env.mk
++++ b/src/build/mkrules/cflags.env.mk
+@@ -28,7 +28,8 @@
+ # Description:
+ #     Configuration of the compiler, linker, etc. flags.
+ 
+-OPT_LEVEL ?= -O3
++# TODO RTC 124305 - Get -O3 to work with gcc4.9
++OPT_LEVEL ?= -O2
+ 
+ ifdef MODULE
+ COMMONFLAGS += -fPIC -Bsymbolic -Bsymbolic-functions
+@@ -36,10 +37,12 @@ CFLAGS += -D__HOSTBOOT_MODULE=$(MODULE)
+ endif
+ 
+ COMMONFLAGS += $(OPT_LEVEL) -nostdlib
++# TODO RTC: 123994 - ELFv2 ABI support (-mabi=elfv1)
+ CFLAGS += $(COMMONFLAGS) -mcpu=power7 -nostdinc -g -mno-vsx -mno-altivec\
+           -Wall -Werror -mtraceback=no -pipe \
+-	  -ffunction-sections -fdata-sections -ffreestanding -mbig-endian
+-ASMFLAGS += $(COMMONFLAGS) -mcpu=power7 -mbig-endian
++	  -ffunction-sections -fdata-sections -ffreestanding -mbig-endian \
++      -mabi=elfv1
++ASMFLAGS += $(COMMONFLAGS) -mcpu=power7 -mbig-endian -mabi=elfv1
+ CXXFLAGS += $(CFLAGS) -nostdinc++ -fno-rtti -fno-exceptions -Wall \
+ 	    -fuse-cxa-atexit
+ LDFLAGS += --nostdlib --sort-common -EB $(COMMONFLAGS)
+-- 
+1.7.4.1
+