diff --git a/c/src/lib/libbsp/or1k/generic_or1k/make/custom/generic_or1k.cfg b/c/src/lib/libbsp/or1k/generic_or1k/make/custom/generic_or1k.cfg
index fff00ae83b..9a00643bce 100644
--- a/c/src/lib/libbsp/or1k/generic_or1k/make/custom/generic_or1k.cfg
+++ b/c/src/lib/libbsp/or1k/generic_or1k/make/custom/generic_or1k.cfg
@@ -5,3 +5,6 @@ RTEMS_CPU = or1k
 CPU_CFLAGS = -O2
 
 CFLAGS_OPTIMIZE_V ?= -O0 -g
+CFLAGS_OPTIMIZE_V += -ffunction-sections -fdata-sections
+
+LDFLAGS = -Wl,--gc-sections