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-rw-r--r--config/Config-build.in88
1 files changed, 79 insertions, 9 deletions
diff --git a/config/Config-build.in b/config/Config-build.in
index 89cf964..280f719 100644
--- a/config/Config-build.in
+++ b/config/Config-build.in
@@ -97,15 +97,6 @@ menu "Global build settings"
If you are unsure, select N.
- config PKG_CHECK_FORMAT_SECURITY
- bool
- prompt "Enable gcc format-security"
- default n
- help
- Add -Wformat -Werror=format-security to the CFLAGS. You can disable
- this per package by adding PKG_CHECK_FORMAT_SECURITY:=0 in the package
- Makefile.
-
config PKG_BUILD_USE_JOBSERVER
bool
prompt "Use top-level make jobserver for packages"
@@ -216,4 +207,83 @@ menu "Global build settings"
bool "libstdc++"
endchoice
+ comment "Hardening build options"
+
+ config PKG_CHECK_FORMAT_SECURITY
+ bool
+ prompt "Enable gcc format-security"
+ default n
+ help
+ Add -Wformat -Werror=format-security to the CFLAGS. You can disable
+ this per package by adding PKG_CHECK_FORMAT_SECURITY:=0 in the package
+ Makefile.
+
+ choice
+ prompt "User space Stack-Smashing Protection"
+ default PKG_CC_STACKPROTECTOR_NONE
+ help
+ Enable GCC Stack Smashing Protection (SSP) for userspace applications
+ config PKG_CC_STACKPROTECTOR_NONE
+ bool "None"
+ config PKG_CC_STACKPROTECTOR_REGULAR
+ bool "Regular"
+ select SSP_SUPPORT
+ depends on KERNEL_CC_STACKPROTECTOR_REGULAR
+ config PKG_CC_STACKPROTECTOR_STRONG
+ bool "Strong"
+ select SSP_SUPPORT
+ depends on GCC_VERSION_4_9_LINARO
+ depends on KERNEL_CC_STACKPROTECTOR_STRONG
+ endchoice
+
+ choice
+ prompt "Kernel space Stack-Smashing Protection"
+ default KERNEL_CC_STACKPROTECTOR_NONE
+ help
+ Enable GCC Stack-Smashing Protection (SSP) for the kernel
+ config KERNEL_CC_STACKPROTECTOR_NONE
+ bool "None"
+ config KERNEL_CC_STACKPROTECTOR_REGULAR
+ bool "Regular"
+ config KERNEL_CC_STACKPROTECTOR_STRONG
+ depends on GCC_VERSION_4_9_LINARO
+ bool "Strong"
+ endchoice
+
+ choice
+ prompt "Enable buffer-overflows detction (FORTIFY_SOURCE)"
+ help
+ Enable the _FORTIFY_SOURCE macro which introduces additional
+ checks to detect buffer-overflows in the following standard library
+ functions: memcpy, mempcpy, memmove, memset, strcpy, stpcpy,
+ strncpy, strcat, strncat, sprintf, vsprintf, snprintf, vsnprintf,
+ gets. "Conservative" (_FORTIFY_SOURCE set to 1) only introduces
+ checks that sholdn't change the behavior of conforming programs,
+ while "aggressive" (_FORTIFY_SOURCES set to 2) some more checking is
+ added, but some conforming programs might fail.
+ config PKG_FORTIFY_SOURCE_NONE
+ bool "None"
+ config PKG_FORTIFY_SOURCE_1
+ bool "Conservative"
+ config PKG_FORTIFY_SOURCE_2
+ bool "Aggressive"
+ endchoice
+
+ choice
+ prompt "Enable RELRO protection"
+ help
+ Enable a link-time protection know as RELRO (Relocation Read Only)
+ which helps to protect from certain type of exploitation techniques
+ altering the content of some ELF sections. "Partial" RELRO makes the
+ .dynamic section not writeable after initialization, introducing
+ almost no performance penalty, while "full" RELRO also marks the GOT
+ as read-only at the cost of initializing all of it at startup.
+ config PKG_RELRO_NONE
+ bool "None"
+ config PKG_RELRO_PARTIAL
+ bool "Partial"
+ config PKG_RELRO_FULL
+ bool "Full"
+ endchoice
+
endmenu