build: ASLR hardening use $(FPIC)

Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
(backported from 89b59994eb44b5cd2fac594144c20c63fd05ef25)

diff --git a/include/hardening.mk b/include/hardening.mk
index 06a61789ef6bcc75bcbd6322bb71538a72f7199f..42ce1f56b5a67636d399d6b58ec9125b37134cb9 100644 (file)
--- a/include/hardening.mk
+++ b/include/hardening.mk
@@ -18,7 +18,7 @@ ifdef CONFIG_PKG_CHECK_FORMAT_SECURITY
 endif
 ifdef CONFIG_PKG_ASLR_PIE
   ifeq ($(strip $(PKG_ASLR_PIE)),1)
 endif
 ifdef CONFIG_PKG_ASLR_PIE
   ifeq ($(strip $(PKG_ASLR_PIE)),1)

-    TARGET_CFLAGS += -fPIC
+    TARGET_CFLAGS += $(FPIC)

     TARGET_LDFLAGS += -specs=$(INCLUDE_DIR)/hardened-ld-pie.specs
   endif
 endif
     TARGET_LDFLAGS += -specs=$(INCLUDE_DIR)/hardened-ld-pie.specs
   endif
 endif