diff --git a/c/src/lib/libbsp/sparc64/niagara/make/custom/niagara.cfg b/c/src/lib/libbsp/sparc64/niagara/make/custom/niagara.cfg
index 187e1faf8a..117899318c 100644
--- a/c/src/lib/libbsp/sparc64/niagara/make/custom/niagara.cfg
+++ b/c/src/lib/libbsp/sparc64/niagara/make/custom/niagara.cfg
@@ -15,3 +15,6 @@ CPU_CFLAGS = -mcpu=niagara -DSUN4V
 
 # optimize flag: typically -g -O2
 CFLAGS_OPTIMIZE_V = -g -O2
+CFLAGS_OPTIMIZE_V += -ffunction-sections -fdata-sections
+
+LDFLAGS = -Wl,--gc-sections