# Copyright (C) 2006-2013 OpenWrt.org # # This is free software, licensed under the GNU General Public License v2. # See /LICENSE for more information. # menu "Global build settings" config ALL_KMODS bool "Select all kernel module packages by default" default ALL config ALL bool "Select all userspace packages by default" default n config SIGNED_PACKAGES bool "Cryptographically signed package lists" default y comment "General build options" config DISPLAY_SUPPORT bool "Show packages that require graphics support (local or remote)" default n config BUILD_PATENTED default y bool "Compile with support for patented functionality" help When this option is disabled, software which provides patented functionality will not be built. In case software provides optional support for patented functionality, this optional support will get disabled for this package. config BUILD_NLS default n bool "Compile with full language support" help When this option is enabled, packages are built with the full versions of iconv and GNU gettext instead of the default libreCMC stubs. If uClibc is used, it is also built with locale support. config SHADOW_PASSWORDS bool prompt "Enable shadow password support" default y help Enable shadow password support. config CLEAN_IPKG bool prompt "Remove ipkg/opkg status data files in final images" default n help This removes all ipkg/opkg status data files from the target directory before building the root filesystem. config COLLECT_KERNEL_DEBUG bool prompt "Collect kernel debug information" select KERNEL_DEBUG_INFO default n help This collects debugging symbols from the kernel and all compiled modules. Useful for release builds, so that kernel issues can be debugged offline later. comment "Kernel build options" source "config/Config-kernel.in" comment "Package build options" config DEBUG bool prompt "Compile packages with debugging info" default n help Adds -g3 to the CFLAGS. config IPV6 bool prompt "Enable IPv6 support in packages" default y help Enable IPv6 support in packages (passes --enable-ipv6 to configure scripts). config PKG_BUILD_PARALLEL bool prompt "Compile certain packages parallelized" default y help This adds a -jX option to certain packages that are known to behave well for parallel build. By default, the package make processes use the main jobserver, in which case this option only takes effect when you add -jX to the make command. If you are unsure, select N. config PKG_BUILD_USE_JOBSERVER bool prompt "Use top-level make jobserver for packages" depends on PKG_BUILD_PARALLEL default y help This passes the main make process jobserver fds to package builds, enabling full parallelization across different packages. Note that disabling this may overcommit CPU resources depending on the -j level of the main make process, the number of package submake jobs selected below and the number of actual CPUs present. Example: If the main make is passed a -j4 and the submake -j is also set to 4, we may end up with 16 parallel make processes in the worst case. config PKG_BUILD_JOBS int prompt "Number of package submake jobs (2-512)" range 2 512 default 2 depends on PKG_BUILD_PARALLEL && !PKG_BUILD_USE_JOBSERVER help The number of jobs (-jX) to pass to packages submake. config PKG_DEFAULT_PARALLEL bool prompt "Parallelize the default package build rule (May break build)" depends on PKG_BUILD_PARALLEL depends on BROKEN default n help Always set the default package build rules to parallel build. WARNING: This may break build or kill your cat, as it builds packages with multiple jobs that are probably not tested in a parallel build environment. Only say Y if you don't mind fixing broken packages. Before reporting build bugs, set this to N and re-run the build. comment "Stripping options" choice prompt "Binary stripping method" default USE_STRIP if EXTERNAL_TOOLCHAIN default USE_STRIP if USE_GLIBC || USE_MUSL default USE_SSTRIP help Select the binary stripping method you wish to use. config NO_STRIP bool "none" help This will install unstripped binaries (useful for native compiling/debugging). config USE_STRIP bool "strip" help This will install binaries stripped using strip from binutils. config USE_SSTRIP bool "sstrip" depends on !DEBUG depends on !USE_GLIBC help This will install binaries stripped using sstrip. endchoice config STRIP_ARGS string prompt "Strip arguments" depends on USE_STRIP default "--strip-unneeded --remove-section=.comment --remove-section=.note" if DEBUG default "--strip-all" help Specifies arguments passed to the strip command when stripping binaries. config STRIP_KERNEL_EXPORTS bool "Strip unnecessary exports from the kernel image" help Reduces kernel size by stripping unused kernel exports from the kernel image. Note that this might make the kernel incompatible with any kernel modules that were not selected at the time the kernel image was created. config USE_MKLIBS bool "Strip unnecessary functions from libraries" help Reduces libraries to only those functions that are necessary for using all selected packages (including those selected as ). Note that this will 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 bool prompt "Enable gcc format-security" default y 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" depends on USE_MUSL default PKG_CC_STACKPROTECTOR_REGULAR 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 if !USE_MUSL depends on KERNEL_CC_STACKPROTECTOR_REGULAR config PKG_CC_STACKPROTECTOR_STRONG bool "Strong" select SSP_SUPPORT if !USE_MUSL 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_REGULAR 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 detection (FORTIFY_SOURCE)" default PKG_FORTIFY_SOURCE_1 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 shouldn'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" default PKG_RELRO_FULL help Enable a link-time protection known 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