kernel: support setting extra CFLAGS for kernel compilation

[openwrt/staging/jow.git] / config / Config-build.in

diff --git a/config/Config-build.in b/config/Config-build.in
index fe916e22eab7d4c54c67e69a7483cbcc99dce249..ef1a10c28dce49abf34f38843830f4b957b33e2e 100644 (file)
--- a/config/Config-build.in
+++ b/config/Config-build.in
@@ -1,12 +1,32 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#

 # Copyright (C) 2006-2013 OpenWrt.org
 # Copyright (C) 2016 LEDE Project
 # Copyright (C) 2006-2013 OpenWrt.org
 # Copyright (C) 2016 LEDE Project

-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+
+config EXPERIMENTAL
+       bool "Enable experimental features by default"
+       default n
+       help
+         Set this option to build with latest bleeding edge features
+         which may or may not work as expected.
+         If you would like to help the development of OpenWrt, you are
+         encouraged to set this option and provide feedback (both
+         positive and negative). But do so only if you know how to
+         recover your device in case of flashing potentially non-working
+         firmware.
+
+         If you plan to use this build in production, say NO!

 
 menu "Global build settings"
 
 
 menu "Global build settings"
 

+       config JSON_OVERVIEW_IMAGE_INFO
+               bool "Create JSON info file overview per target"
+               default y
+               help
+                 Create a JSON info file called profiles.json in the target
+                 directory containing machine readable list of built profiles
+                 and resulting images.
+

        config ALL_NONSHARED
                bool "Select all target specific packages by default"
                select ALL_KMODS
        config ALL_NONSHARED
                bool "Select all target specific packages by default"
                select ALL_KMODS


@@ -43,7 +63,7 @@ menu "Global build settings"
        config TESTING_KERNEL
                bool "Use the testing kernel version"
                depends on HAS_TESTING_KERNEL
        config TESTING_KERNEL
                bool "Use the testing kernel version"
                depends on HAS_TESTING_KERNEL

-               default n
+               default EXPERIMENTAL

                help
                  If the target supports a newer kernel version than the default,
                  you can use this config option to enable it
                help
                  If the target supports a newer kernel version than the default,
                  you can use this config option to enable it


@@ -87,13 +107,22 @@ menu "Global build settings"
                default n
                help
                  This makes file checksums part of package metadata. It increases size
                default n
                help
                  This makes file checksums part of package metadata. It increases size

-                 but provides you with pkg_check command to check for flash coruptions.
+                 but provides you with pkg_check command to check for flash corruptions.

 
        config INCLUDE_CONFIG
                bool "Include build configuration in firmware" if DEVEL
                default n
                help
 
        config INCLUDE_CONFIG
                bool "Include build configuration in firmware" if DEVEL
                default n
                help

-                 If enabled, config.seed will be stored in /etc/build.config of firmware.
+                 If enabled, buildinfo files will be stored in /etc/build.* of firmware.
+
+       config REPRODUCIBLE_DEBUG_INFO
+               bool "Make debug information reproducible"
+               default BUILDBOT
+               help
+                 This strips the local build path out of debug information. This has the
+                 advantage of making it reproducible, but the disadvantage of making local
+                 debugging using ./scripts/remote-gdb harder, since the debug data will
+                 no longer point to the full path on the build host.

 
        config COLLECT_KERNEL_DEBUG
                bool
 
        config COLLECT_KERNEL_DEBUG
                bool


@@ -165,6 +194,14 @@ menu "Global build settings"
                help
                  Specifies arguments passed to the strip command when stripping binaries.
 
                help
                  Specifies arguments passed to the strip command when stripping binaries.
 

+       config SSTRIP_ARGS
+               string
+               prompt "Sstrip arguments"
+               depends on USE_SSTRIP
+               default "-z"
+               help
+                 Specifies arguments passed to the sstrip command when stripping binaries.
+

        config STRIP_KERNEL_EXPORTS
                bool "Strip unnecessary exports from the kernel image"
                help
        config STRIP_KERNEL_EXPORTS
                bool "Strip unnecessary exports from the kernel image"
                help


@@ -180,20 +217,6 @@ menu "Global build settings"
                  make the system libraries incompatible with most of the packages that are
                  not selected during the build process.
 
                  make the system libraries incompatible with most of the packages that are
                  not selected during the build process.
 

-       choice
-               prompt "Preferred standard C++ library"
-               default USE_LIBSTDCXX if USE_GLIBC
-               default USE_UCLIBCXX
-               help
-                 Select the preferred standard C++ library for all packages that support this.
-
-               config USE_UCLIBCXX
-                       bool "uClibc++"
-
-               config USE_LIBSTDCXX
-                       bool "libstdc++"
-       endchoice
-

        comment "Hardening build options"
 
        config PKG_CHECK_FORMAT_SECURITY
        comment "Hardening build options"
 
        config PKG_CHECK_FORMAT_SECURITY


@@ -205,11 +228,10 @@ menu "Global build settings"
                  this per package by adding PKG_CHECK_FORMAT_SECURITY:=0 in the package
                  Makefile.
 
                  this per package by adding PKG_CHECK_FORMAT_SECURITY:=0 in the package
                  Makefile.
 

-       config PKG_ASLR_PIE
-               bool
+       choice

                prompt "User space ASLR PIE compilation"
                prompt "User space ASLR PIE compilation"

-               select BUSYBOX_DEFAULT_PIE
-               default n
+               default PKG_ASLR_PIE_NONE if ((SMALL_FLASH || LOW_MEMORY_FOOTPRINT) && !SDK)
+               default PKG_ASLR_PIE_REGULAR

                help
                  Add -fPIC to CFLAGS and -specs=hardened-build-ld to LDFLAGS.
                  This enables package build as Position Independent Executables (PIE)
                help
                  Add -fPIC to CFLAGS and -specs=hardened-build-ld to LDFLAGS.
                  This enables package build as Position Independent Executables (PIE)


@@ -220,10 +242,24 @@ menu "Global build settings"
                  to predict when an attacker is attempting a memory-corruption exploit.
                  You can disable this per package by adding PKG_ASLR_PIE:=0 in the package
                  Makefile.
                  to predict when an attacker is attempting a memory-corruption exploit.
                  You can disable this per package by adding PKG_ASLR_PIE:=0 in the package
                  Makefile.

+                 Be ware that ASLR increases the binary size.
+               config PKG_ASLR_PIE_NONE
+                       bool "None"
+                       help
+                         PIE is deactivated for all applications
+               config PKG_ASLR_PIE_REGULAR
+                       bool "Regular"
+                       help
+                         PIE is activated for some binaries, mostly network exposed applications
+               config PKG_ASLR_PIE_ALL
+                       bool "All"
+                       select BUSYBOX_DEFAULT_PIE
+                       help
+                         PIE is activated for all applications
+       endchoice

 
        choice
                prompt "User space Stack-Smashing Protection"
 
        choice
                prompt "User space Stack-Smashing Protection"

-               depends on USE_MUSL

                default PKG_CC_STACKPROTECTOR_REGULAR
                help
                  Enable GCC Stack Smashing Protection (SSP) for userspace applications
                default PKG_CC_STACKPROTECTOR_REGULAR
                help
                  Enable GCC Stack Smashing Protection (SSP) for userspace applications


@@ -231,19 +267,13 @@ menu "Global build settings"
                        bool "None"
                config PKG_CC_STACKPROTECTOR_REGULAR
                        bool "Regular"
                        bool "None"
                config PKG_CC_STACKPROTECTOR_REGULAR
                        bool "Regular"

-                       select GCC_LIBSSP if !USE_MUSL
-                       depends on KERNEL_CC_STACKPROTECTOR_REGULAR

                config PKG_CC_STACKPROTECTOR_STRONG
                        bool "Strong"
                config PKG_CC_STACKPROTECTOR_STRONG
                        bool "Strong"

-                       select GCC_LIBSSP if !USE_MUSL
-                       depends on !GCC_VERSION_4_8
-                       depends on KERNEL_CC_STACKPROTECTOR_STRONG

        endchoice
 
        choice
                prompt "Kernel space Stack-Smashing Protection"
                default KERNEL_CC_STACKPROTECTOR_REGULAR
        endchoice
 
        choice
                prompt "Kernel space Stack-Smashing Protection"
                default KERNEL_CC_STACKPROTECTOR_REGULAR

-               depends on USE_MUSL || !(x86_64 || i386)

                help
                  Enable GCC Stack-Smashing Protection (SSP) for the kernel
                config KERNEL_CC_STACKPROTECTOR_NONE
                help
                  Enable GCC Stack-Smashing Protection (SSP) for the kernel
                config KERNEL_CC_STACKPROTECTOR_NONE


@@ -251,15 +281,14 @@ menu "Global build settings"
                config KERNEL_CC_STACKPROTECTOR_REGULAR
                        bool "Regular"
                config KERNEL_CC_STACKPROTECTOR_STRONG
                config KERNEL_CC_STACKPROTECTOR_REGULAR
                        bool "Regular"
                config KERNEL_CC_STACKPROTECTOR_STRONG

-                       depends on !GCC_VERSION_4_8

                        bool "Strong"
        endchoice
 
                        bool "Strong"
        endchoice
 

-       config  KERNEL_STACKPROTECTOR
+       config KERNEL_STACKPROTECTOR

                bool
                default KERNEL_CC_STACKPROTECTOR_REGULAR || KERNEL_CC_STACKPROTECTOR_STRONG
 
                bool
                default KERNEL_CC_STACKPROTECTOR_REGULAR || KERNEL_CC_STACKPROTECTOR_STRONG
 

-       config  KERNEL_STACKPROTECTOR_STRONG
+       config KERNEL_STACKPROTECTOR_STRONG

                bool
                default KERNEL_CC_STACKPROTECTOR_STRONG
 
                bool
                default KERNEL_CC_STACKPROTECTOR_STRONG
 


@@ -301,4 +330,58 @@ menu "Global build settings"
                        bool "Full"
        endchoice
 
                        bool "Full"
        endchoice
 

+       config TARGET_ROOTFS_SECURITY_LABELS
+               bool
+               select KERNEL_SQUASHFS_XATTR
+               select KERNEL_EXT4_FS_SECURITY
+               select KERNEL_F2FS_FS_SECURITY
+               select KERNEL_UBIFS_FS_SECURITY
+               select KERNEL_JFFS2_FS_SECURITY
+
+       config SELINUX
+               bool "Enable SELinux"
+               select KERNEL_SECURITY_SELINUX
+               select TARGET_ROOTFS_SECURITY_LABELS
+               select PACKAGE_procd-selinux
+               select PACKAGE_busybox-selinux
+               help
+                 This option enables SELinux kernel features, applies security labels
+                 in squashfs rootfs and selects the selinux-variants of busybox and procd.
+
+                 Selecting this option results in about 0.5MiB of additional flash space
+                 usage accounting for increased kernel and rootfs size.
+
+       choice
+               prompt "default SELinux type"
+               depends on TARGET_ROOTFS_SECURITY_LABELS
+               default SELINUXTYPE_dssp
+               help
+                 Select SELinux policy to be installed and used for applying rootfs labels.
+
+               config SELINUXTYPE_targeted
+                       bool "targeted"
+                       select PACKAGE_refpolicy
+                       help
+                         SELinux Reference Policy (refpolicy)
+
+               config SELINUXTYPE_dssp
+                       bool "dssp"
+                       select PACKAGE_selinux-policy
+                       help
+                         Defensec SELinux Security Policy -- OpenWrt edition
+
+       endchoice
+
+       config SECCOMP
+               bool "Enable SECCOMP"
+               select KERNEL_SECCOMP
+               select PACKAGE_procd-seccomp
+               depends on (aarch64 || arm || armeb || mips || mipsel || mips64 || mips64el || i386 || powerpc || x86_64)
+               depends on !TARGET_uml
+               default y
+               help
+                 This option enables seccomp kernel features to safely
+                 execute untrusted bytecode and selects the seccomp-variants
+                 of procd
+

 endmenu
 endmenu