diff --git a/packages/sysutils/grep/build b/packages/sysutils/grep/build
index 60253c5586..2b74189aa1 100755
--- a/packages/sysutils/grep/build
+++ b/packages/sysutils/grep/build
@@ -5,6 +5,11 @@
 $SCRIPTS/build toolchain
 $SCRIPTS/build pcre
 
+# grep fails to compile with GCC 4.5.0's link time optimization.
+  CFLAGS=`echo $CFLAGS | sed -e "s|-flto||" -e "s|-fuse-linker-plugin||" -e "s|-fwhole-program||"`
+  CXXFLAGS=`echo $CXXFLAGS | sed -e "s|-flto||" -e "s|-fuse-linker-plugin||" -e "s|-fwhole-program||"`
+  LDFLAGS=`echo $LDFLAGS | sed -e "s|-flto||" -e "s|-fuse-linker-plugin||" -e "s|-fwhole-program||"`
+
 cd $PKG_BUILD
 ./configure --host=$TARGET_NAME \
             --build=$HOST_NAME \