include/hardening.mk

   1 #
   2 # Copyright (C) 2015 OpenWrt.org
   3 #
   4 # This is free software, licensed under the GNU General Public License v2.
   5 # See /LICENSE for more information.
   6 #
   7
   8 PKG_CHECK_FORMAT_SECURITY ?= 1
   9 PKG_SSP ?= 1
  10 PKG_FORTIFY_SOURCE ?= 1
  11 PKG_RELRO ?= 1
  12
  13 ifdef CONFIG_PKG_CHECK_FORMAT_SECURITY
  14   ifeq ($(strip $(PKG_CHECK_FORMAT_SECURITY)),1)
  15     TARGET_CFLAGS += -Wformat -Werror=format-security
  16   endif
  17 endif
  18 ifdef CONFIG_PKG_CC_STACKPROTECTOR_REGULAR
  19   ifeq ($(strip $(PKG_SSP)),1)
  20     TARGET_CFLAGS += -fstack-protector
  21   endif
  22 endif
  23 ifdef CONFIG_PKG_CC_STACKPROTECTOR_STRONG
  24   ifeq ($(strip $(PKG_SSP)),1)
  25     TARGET_CFLAGS += -fstack-protector-strong
  26   endif
  27 endif
  28 ifdef CONFIG_PKG_FORTIFY_SOURCE_1
  29   ifeq ($(strip $(PKG_FORTIFY_SOURCE)),1)
  30     TARGET_CFLAGS += -D_FORTIFY_SOURCE=1
  31   endif
  32 endif
  33 ifdef CONFIG_PKG_FORTIFY_SOURCE_2
  34   ifeq ($(strip $(PKG_FORTIFY_SOURCE)),1)
  35     TARGET_CFLAGS += -D_FORTIFY_SOURCE=2
  36   endif
  37 endif
  38 ifdef CONFIG_PKG_RELRO_PARTIAL
  39   ifeq ($(strip $(PKG_RELRO)),1)
  40     TARGET_CFLAGS += -Wl,-z,relro
  41     TARGET_LDFLAGS += -zrelro
  42   endif
  43 endif
  44 ifdef CONFIG_PKG_RELRO_FULL
  45   ifeq ($(strip $(PKG_RELRO)),1)
  46     TARGET_CFLAGS += -Wl,-z,now -Wl,-z,relro
  47     TARGET_LDFLAGS += -znow -zrelro
  48   endif
  49 endif
  50