KumiSystems/openwrtv4
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busybox: add missing TARGET_CPPFLAGS and TARGET_LDFLAGS

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Unconditionally pass TARGET_CPPFLAGS (not passed at all before) and
TARGET_LDFLAGS (passed only in certain non-default configuration before the
Makefile streamlining). Without these flags, hardening options
(PKG_FORTIFY_SOURCE and PKG_RELRO) were not actually applied to busybox.

The addition of these flags increases the size of the stripped busybox
binary by about 6KB (~4KB with fortify headers, ~2KB with "-znow -zrelro")
with the default hardening options PKG_FORTIFY_SOURCE_1 and PKG_RELRO_FULL.

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
This commit is contained in:
Matthias Schiffer 2017-12-10 18:04:53 +01:00
parent a10fae1133
commit 20c349f68c
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GPG key ID: 16EF3F64CB201D9C
1 changed files with 3 additions and 2 deletions
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5
package/utils/busybox/Makefile
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@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
PKG_NAME:=busybox
PKG_VERSION:=1.27.2
PKG_RELEASE:=2
PKG_RELEASE:=3
PKG_FLAGS:=essential
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
@ -83,7 +83,8 @@ endif
MAKE_VARS :=
MAKE_FLAGS += \
EXTRA_CFLAGS="$(TARGET_CFLAGS)" \
EXTRA_CFLAGS="$(TARGET_CFLAGS) $(TARGET_CPPFLAGS)" \
EXTRA_LDFLAGS="$(TARGET_LDFLAGS)" \
LDLIBS="$(LDLIBS)" \
SKIP_STRIP=y
ifneq ($(findstring c,$(OPENWRT_VERBOSE)),)