default y if BR2_HOST_GCC_VERSION = "7"
select BR2_HOST_GCC_AT_LEAST_6
+config BR2_HOST_GCC_AT_LEAST_8
+ bool
+ default y if BR2_HOST_GCC_VERSION = "8"
+ select BR2_HOST_GCC_AT_LEAST_7
+
# Hidden boolean selected by packages in need of Java in order to build
# (example: kodi)
config BR2_NEEDS_HOST_JAVA
default ""
help
Options to pass to tar when extracting the sources.
- E.g. " -v --exclude='*.svn*'" to exclude all .svn internal files
- and to be verbose.
+ E.g. " -v --exclude='*.svn*'" to exclude all .svn internal
+ files and to be verbose.
endmenu
If the Linux shell environment has defined the BR2_DL_DIR
environment variable, then this overrides this configuration
item.
+ The directory is organized with a subdirectory for each
+ package. Each package has its own $(LIBFOO_DL_DIR) variable
+ that can be used to find the correct path.
The default is $(TOPDIR)/dl
default "$(HOME)/.buildroot-ccache"
help
Where ccache should store cached files.
+ If the Linux shell environment has defined the BR2_CCACHE_DIR
+ environment variable, then this overrides this configuration
+ item.
config BR2_CCACHE_INITIAL_SETUP
string "Compiler cache initial setup"
config BR2_STRIP_strip
bool "strip target binaries"
- depends on !BR2_PACKAGE_HOST_ELF2FLT
default y
+ depends on !BR2_PACKAGE_HOST_ELF2FLT
help
Binaries and libraries in the target filesystem will be
stripped using the normal 'strip' command. This allows to save
config BR2_STRIP_EXCLUDE_FILES
string "executables that should not be stripped"
- depends on BR2_STRIP_strip
default ""
+ depends on BR2_STRIP_strip
help
You may specify a space-separated list of binaries and
libraries here that should not be stripped on the target.
config BR2_STRIP_EXCLUDE_DIRS
string "directories that should be skipped when stripping"
- depends on BR2_STRIP_strip
default ""
+ depends on BR2_STRIP_strip
help
You may specify a space-separated list of directories that
should be skipped when stripping. Binaries and libraries in
-ftree-vect-loop-version
This is the default.
+config BR2_OPTIMIZE_FAST
+ bool "optimize for fast"
+ depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_6
+ help
+ Optimize for fast. Disregard strict standards
+ compliance. -Ofast enables all -O3 optimizations. It also
+ enables optimizations that are not valid for all
+ standard-compliant programs. It turns on -ffast-math and the
+ Fortran-specific -fstack-arrays, unless -fmax-stack-var-size
+ is specified, and -fno-protect-parens.
+
endchoice
config BR2_GOOGLE_BREAKPAD_ENABLE
bool "Enable google-breakpad support"
- select BR2_PACKAGE_GOOGLE_BREAKPAD
depends on BR2_INSTALL_LIBSTDCPP
depends on BR2_HOST_GCC_AT_LEAST_4_8 # C++11
depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 # C++11
depends on (BR2_TOOLCHAIN_USES_GLIBC || BR2_TOOLCHAIN_USES_UCLIBC)
depends on BR2_PACKAGE_GOOGLE_BREAKPAD_ARCH_SUPPORTS
depends on BR2_PACKAGE_HOST_GOOGLE_BREAKPAD_ARCH_SUPPORTS
+ select BR2_PACKAGE_GOOGLE_BREAKPAD
help
This option will enable the use of google breakpad, a library
and tool suite that allows you to distribute an application to
endchoice
-
config BR2_PACKAGE_OVERRIDE_FILE
string "location of a package override file"
default "$(CONFIG_DIR)/local.mk"
Note that this mechanism is available for both the internal
toolchain (through the toolchain wrapper and binutils patches)
- and external toolchain backends (through the toolchain wrapper).
+ and external toolchain backends (through the toolchain
+ wrapper).
config BR2_REPRODUCIBLE
bool "Make the build reproducible (experimental)"
comment "Stack Smashing Protection needs a toolchain w/ SSP"
depends on !BR2_TOOLCHAIN_HAS_SSP
+choice
+ bool "RELRO Protection"
+ depends on BR2_SHARED_LIBS
+ 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.
+
+config BR2_RELRO_NONE
+ bool "None"
+ help
+ Disables Relocation link-time protections.
+
+config BR2_RELRO_PARTIAL
+ bool "Partial"
+ help
+ This option makes the dynamic section not writeable after
+ initialization (with almost no performance penalty).
+
+config BR2_RELRO_FULL
+ bool "Full"
+ help
+ This option includes the partial configuration, but also marks
+ the GOT as read-only at the cost of initialization time during
+ program loading, i.e every time an executable is started.
+
+endchoice
+
+comment "RELocation Read Only (RELRO) needs shared libraries"
+ depends on !BR2_SHARED_LIBS
+
+choice
+ bool "Buffer-overflow Detection (FORTIFY_SOURCE)"
+ depends on BR2_TOOLCHAIN_USES_GLIBC
+ depends on !BR2_OPTIMIZE_0
+ 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.
+
+ NOTE: This feature requires an optimization level of s/1/2/3/g
+
+ Support for this feature has been present since GCC 4.x.
+
+config BR2_FORTIFY_SOURCE_NONE
+ bool "None"
+ help
+ Disables additional checks to detect buffer-overflows.
+
+config BR2_FORTIFY_SOURCE_1
+ bool "Conservative"
+ help
+ This option sets _FORTIFY_SOURCE to 1 and only introduces
+ checks that shouldn't change the behavior of conforming
+ programs. Adds checks at compile-time only.
+
+config BR2_FORTIFY_SOURCE_2
+ bool "Aggressive"
+ help
+ This option sets _FORTIFY_SOURCES to 2 and some more
+ checking is added, but some conforming programs might fail.
+ Also adds checks at run-time (detected buffer overflow
+ terminates the program)
+
+endchoice
+
+comment "Fortify Source needs a glibc toolchain and optimization"
+ depends on (!BR2_TOOLCHAIN_USES_GLIBC || BR2_OPTIMIZE_0)
endmenu
source "toolchain/Config.in"
projects / coffee / buildroot.git / blobdiff