From: Saul Wold Date: Fri, 28 Jun 2013 18:46:03 +0000 (-0700) Subject: security_flags: Add the compiler and linker flags that enhance security X-Git-Tag: rev_ivi_2015_02_04~11927 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9b7cbfafadd04c01a59334a670aadae2acbbf9ec;p=scm%2Fbb%2Ftizen-distro.git security_flags: Add the compiler and linker flags that enhance security These flags add addition checks at compile, link and runtime to prevent stack smashing, checking for buffer overflows, and link at program start to prevent call spoofing later. This needs to be explicitly enabled by adding the following line to your local.conf: require conf/distro/include/security_flags.inc [YOCTO #3868] (From OE-Core rev: ff0e863f2d345c42393a14a193f76d699745a2b9) Signed-off-by: Saul Wold Signed-off-by: Richard Purdie --- diff --git a/meta/conf/distro/include/security_flags.inc b/meta/conf/distro/include/security_flags.inc new file mode 100644 index 0000000..72dd1ad --- /dev/null +++ b/meta/conf/distro/include/security_flags.inc @@ -0,0 +1,26 @@ +SECURITY_CFLAGS ?= "-fstack-protector-all -pie -fpie -D_FORTIFY_SOURCE=2" +SECURITY_LDFLAGS ?= "-Wl,-z,relro,-z,now" + +# Curl seems to check for FORTIFY_SOURCE in CFLAGS, but even assigned +# to CPPFLAGS it gets picked into CFLAGS in bitbake. +#TARGET_CPPFLAGS_pn-curl += "-D_FORTIFY_SOURCE=2" +SECURITY_CFLAGS_pn-curl = "-fstack-protector-all -pie -fpie" +SECURITY_CFLAGS_pn-ppp = "-fstack-protector-all -D_FORTIFY_SOURCE=2" +SECURITY_CFLAGS_pn-eglibc = "" +SECURITY_CFLAGS_pn-eglibc-initial = "" +SECURITY_CFLAGS_pn-zlib = "-fstack-protector-all -D_FORTIFY_SOURCE=2" +SECURITY_CFLAGS_pn-gcc-runtime = "-fstack-protector-all -D_FORTIFY_SOURCE=2" +SECURITY_CFLAGS_pn-libgcc = "-fstack-protector-all -D_FORTIFY_SOURCE=2" +SECURITY_CFLAGS_pn-tcl = "-fstack-protector-all -D_FORTIFY_SOURCE=2" +SECURITY_CFLAGS_pn-libcap = "-fstack-protector-all -D_FORTIFY_SOURCE=2" +SECURITY_CFLAGS_pn-python-smartpm = "-fstack-protector-all -D_FORTIFY_SOURCE=2" +SECURITY_CFLAGS_pn-python-imaging = "-fstack-protector-all -D_FORTIFY_SOURCE=2" +SECURITY_CFLAGS_pn-python-pycurl = "-fstack-protector-all -D_FORTIFY_SOURCE=2" +SECURITY_CFLAGS_pn-kexec-tools = "-fstack-protector-all -D_FORTIFY_SOURCE=2" + +# These 2 have text relco errors with the pie options enabled +SECURITY_CFLAGS_pn-pulseaudio = "-fstack-protector-all -D_FORTIFY_SOURCE=2" +SECURITY_CFLAGS_pn-ltp = "-fstack-protector-all -D_FORTIFY_SOURCE=2" + +TARGET_CFLAGS_append = " ${SECURITY_CFLAGS}" +TARGET_LDFLAGS_append = " ${SECURITY_LDFLAGS}"