diff --git a/docs/manual/adding-packages-directory.txt b/docs/manual/adding-packages-directory.txt index c9857a80d3..f5e1e313d5 100644 --- a/docs/manual/adding-packages-directory.txt +++ b/docs/manual/adding-packages-directory.txt @@ -292,13 +292,13 @@ use in the comment. * Kernel headers ** Dependency symbol: +BR2_TOOLCHAIN_HEADERS_AT_LEAST_X_Y+, (replace - +X_Y+ with the proper version, see +toolchain/toolchain-common.in+) + +X_Y+ with the proper version, see +toolchain/Config.in+) ** Comment string: +headers >= X.Y+ and/or `headers <= X.Y` (replace +X.Y+ with the proper version) * GCC version ** Dependency symbol: +BR2_TOOLCHAIN_GCC_AT_LEAST_X_Y+, (replace - +X_Y+ with the proper version, see +toolchain/toolchain-common.in+) + +X_Y+ with the proper version, see +toolchain/Config.in+) ** Comment string: +gcc >= X.Y+ and/or `gcc <= X.Y` (replace +X.Y+ with the proper version) diff --git a/toolchain/Config.in b/toolchain/Config.in index bf1166b601..91035c71d7 100644 --- a/toolchain/Config.in +++ b/toolchain/Config.in @@ -56,6 +56,475 @@ endchoice source "toolchain/toolchain-buildroot/Config.in" source "toolchain/toolchain-external/Config.in" -source "toolchain/toolchain-common.in" + +# Generic toolchain options + +# we want gdb config in the middle of both source and external +# toolchains, but mconf won't let us source the same file twice, +# so put it here instead +source "package/gdb/Config.in.host" + +comment "Toolchain Generic Options" + +# https://sourceware.org/bugzilla/show_bug.cgi?id=19615 +# Affect toolchains built with binutils 2.26 (fixed in binutils 2.26.1). +config BR2_TOOLCHAIN_HAS_BINUTILS_BUG_19615 + bool + +# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64735 +# exception_ptr, nested_exception, and future from libstdc++ are not +# available for architectures not supporting always lock-free atomic +# ints before GCC 7 +config BR2_TOOLCHAIN_HAS_GCC_BUG_64735 + bool + default y if BR2_nios2 + default y if BR2_ARM_CPU_ARMV4 + default y if BR2_ARM_CPU_ARMV5 + default y if BR2_sparc_v8 + default y if BR2_m68k_cf5208 + depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_7 + +config BR2_TOOLCHAIN_HAS_NATIVE_RPC + bool + +config BR2_USE_WCHAR + bool + +config BR2_ENABLE_LOCALE + bool + +config BR2_INSTALL_LIBSTDCPP + bool + +config BR2_TOOLCHAIN_HAS_FORTRAN + bool + +config BR2_TOOLCHAIN_HAS_THREADS + bool + +config BR2_TOOLCHAIN_HAS_THREADS_DEBUG + bool + +config BR2_TOOLCHAIN_HAS_THREADS_NPTL + bool + +config BR2_TOOLCHAIN_HAS_SHADOW_PASSWORDS + bool + +config BR2_TOOLCHAIN_HAS_SSP + bool + +config BR2_TOOLCHAIN_SUPPORTS_PIE + bool + +config BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_COPY + bool "Copy gconv libraries" + depends on BR2_TOOLCHAIN_USES_GLIBC + help + The gconv libraries are used to convert between different + character sets (charsets). + + Say 'y' if you need to store and/or display different charsets. + +config BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_LIST + string "Gconv libraries to copy" + depends on BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_COPY + help + Set to the list of gconv libraries to copy. + Leave empty to copy all gconv libraries. + + Specify only the basename of the libraries, leave + out the .so extension. Eg.: + IBM850 ISO8859-15 UNICODE + + Note: the full set of gconv libs are ~8MiB (on ARM). + +# This boolean is true if the toolchain provides a built-in full +# featured gettext implementation (glibc), and false if only a stub +# gettext implementation is provided (uclibc, musl) +config BR2_TOOLCHAIN_HAS_FULL_GETTEXT + bool + +config BR2_USE_MMU + bool "Enable MMU support" if BR2_ARCH_HAS_MMU_OPTIONAL + default y if BR2_ARCH_HAS_MMU_OPTIONAL || BR2_ARCH_HAS_MMU_MANDATORY + help + If your target has a MMU, you should say Y here. If you + are unsure, just say Y. + +config BR2_TARGET_OPTIMIZATION + string "Target Optimizations" + default "" + help + Optimizations to use when building for the target host. + NOTE: gcc optimization level is defined in build options. + +config BR2_TARGET_LDFLAGS + string "Target linker options" + help + Extra options to pass to the linker when building for the target. + + Note that options with a '$' sign (eg. -Wl,-rpath='$ORIGIN/../lib') + are not supported. + +config BR2_ECLIPSE_REGISTER + bool "Register toolchain within Eclipse Buildroot plug-in" + help + This options tells Buildroot to generate the necessary + configuration files to make your toolchain appear within + Eclipse, through the Eclipse Buildroot plugin. + +# Options for packages to depend on, if they require at least a +# specific version of the kernel headers. +# Toolchains should choose the adequate option (ie. the highest +# version, not all of them). +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0 + bool + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_1 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_1 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_3 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_3 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_5 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_6 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_5 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_6 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_8 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_9 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_8 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_9 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_15 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_16 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_15 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_16 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_18 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_19 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_18 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_19 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_1 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_2 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_1 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_2 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_6 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_7 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_6 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_8 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_7 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_9 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_8 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_10 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_9 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_11 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_10 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_11 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_13 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_14 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_13 + +config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_15 + bool + select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_14 + +# This order guarantees that the highest version is set, as kconfig +# stops affecting a value on the first matching default. +config BR2_TOOLCHAIN_HEADERS_AT_LEAST + string + default "4.15" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_15 + default "4.14" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_14 + default "4.13" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_13 + default "4.12" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12 + default "4.11" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_11 + default "4.10" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_10 + default "4.9" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_9 + default "4.8" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_8 + default "4.7" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_7 + default "4.6" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_6 + default "4.5" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5 + default "4.4" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4 + default "4.3" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3 + default "4.2" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_2 + default "4.1" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_1 + default "4.0" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0 + default "3.19" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_19 + default "3.18" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_18 + default "3.17" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17 + default "3.16" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_16 + default "3.15" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_15 + default "3.14" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14 + default "3.13" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13 + default "3.12" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12 + default "3.11" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11 + default "3.10" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10 + default "3.9" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_9 + default "3.8" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_8 + default "3.7" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7 + default "3.6" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_6 + default "3.5" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_5 + default "3.4" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4 + default "3.3" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_3 + default "3.2" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2 + default "3.1" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_1 + default "3.0" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0 + default "2.6" + +config BR2_TOOLCHAIN_GCC_AT_LEAST_4_3 + bool + +config BR2_TOOLCHAIN_GCC_AT_LEAST_4_4 + bool + select BR2_TOOLCHAIN_GCC_AT_LEAST_4_3 + +config BR2_TOOLCHAIN_GCC_AT_LEAST_4_5 + bool + select BR2_TOOLCHAIN_GCC_AT_LEAST_4_4 + +config BR2_TOOLCHAIN_GCC_AT_LEAST_4_6 + bool + select BR2_TOOLCHAIN_GCC_AT_LEAST_4_5 + +config BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 + bool + select BR2_TOOLCHAIN_GCC_AT_LEAST_4_6 + +config BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 + bool + select BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 + +config BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 + bool + select BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 + +config BR2_TOOLCHAIN_GCC_AT_LEAST_5 + bool + select BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 + +config BR2_TOOLCHAIN_GCC_AT_LEAST_6 + bool + select BR2_TOOLCHAIN_GCC_AT_LEAST_5 + +config BR2_TOOLCHAIN_GCC_AT_LEAST_7 + bool + select BR2_TOOLCHAIN_GCC_AT_LEAST_6 + +# This order guarantees that the highest version is set, as kconfig +# stops affecting a value on the first matching default. +config BR2_TOOLCHAIN_GCC_AT_LEAST + string + default "7" if BR2_TOOLCHAIN_GCC_AT_LEAST_7 + default "6" if BR2_TOOLCHAIN_GCC_AT_LEAST_6 + default "5" if BR2_TOOLCHAIN_GCC_AT_LEAST_5 + default "4.9" if BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 + default "4.8" if BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 + default "4.7" if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 + default "4.6" if BR2_TOOLCHAIN_GCC_AT_LEAST_4_6 + default "4.5" if BR2_TOOLCHAIN_GCC_AT_LEAST_4_5 + default "4.4" if BR2_TOOLCHAIN_GCC_AT_LEAST_4_4 + default "4.3" if BR2_TOOLCHAIN_GCC_AT_LEAST_4_3 + +config BR2_TOOLCHAIN_HAS_MNAN_OPTION + bool + default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 + +config BR2_TOOLCHAIN_HAS_SYNC_1 + bool + default y + depends on !BR2_bfin + depends on !BR2_m68k_cf + depends on !BR2_microblaze + depends on !BR2_sparc + depends on !(BR2_arc && !BR2_ARC_ATOMIC_EXT) + +config BR2_TOOLCHAIN_HAS_SYNC_2 + bool + default y if BR2_TOOLCHAIN_HAS_SYNC_1 + +config BR2_TOOLCHAIN_HAS_SYNC_4 + bool + default y + depends on !BR2_m68k_cf + depends on !BR2_sparc + depends on !(BR2_arc && !BR2_ARC_ATOMIC_EXT) + +# The availability of __sync for 8-byte types on ARM is somewhat +# complicated: +# +# - It appeared in gcc starting with gcc 4.7. +# +# - On ARMv7, there is no problem, it can be directly implemented in +# userspace. +# +# - On < ARMv7, it requires help from the kernel. Unfortunately, the +# libgcc code implementing 8-byte __sync with the help from the +# kernel calls __write() when a failure occurs, which is a function +# internal to glibc, not available in uClibc and musl. This means +# that the 8-byte __sync operations are not available on < ARMv7 +# with uClibc and musl. This problem was fixed as part of gcc +# PR68059, which was backported to the gcc 5 branch, but isn't yet +# part of any gcc 5.x release. +# +config BR2_TOOLCHAIN_ARM_HAS_SYNC_8 + bool + default y + depends on BR2_arm || BR2_armeb + depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 + depends on BR2_TOOLCHAIN_USES_GLIBC || BR2_ARM_CPU_ARMV7A + +# 8-byte intrinsics available on most x86 CPUs, except a few old ones +config BR2_TOOLCHAIN_X86_HAS_SYNC_8 + bool + default y + depends on BR2_i386 + depends on !BR2_x86_i486 + depends on !BR2_x86_c3 + depends on !BR2_x86_winchip_c6 + depends on !BR2_x86_winchip2 + +# 8-byte intrinsics available: +# - On all 64 bits architecture +# - On a certain combinations of ARM platforms +# - On certain x86 32 bits CPUs +config BR2_TOOLCHAIN_HAS_SYNC_8 + bool + default y if BR2_ARCH_IS_64 + default y if BR2_TOOLCHAIN_ARM_HAS_SYNC_8 + default y if BR2_TOOLCHAIN_X86_HAS_SYNC_8 + +# libatomic is available since gcc 4.8, when thread support is +# enabled. Also, libatomic doesn't recognize "uclinux" as a valid OS +# part of the tuple, and is therefore not build on uclinux targets, +# which is why BR2_BINFMT_FLAT configurations are excluded. +config BR2_TOOLCHAIN_HAS_LIBATOMIC + bool + default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 && \ + BR2_TOOLCHAIN_HAS_THREADS && \ + !BR2_BINFMT_FLAT + +# __atomic intrinsics are available: +# - with gcc 4.8, either through built-ins or libatomic, on all +# architectures. Since we don't want to separate the cases where +# libatomic is needed vs. not needed, we simplify thing and only +# support situations where libatomic is available, even if on some +# architectures libatomic is not strictly needed as all __atomic +# intrinsics might be built-in. The only case where libatomic is +# missing entirely is when the toolchain does not have support for +# threads. However, a package that does not need threads but still +# uses atomics is quite a corner case, which does not warrant the +# added complexity. +# - with gcc 4.7, libatomic did not exist, so only built-ins are +# available. This means that __atomic can only be used in a subset +# of the architectures +config BR2_TOOLCHAIN_HAS_ATOMIC + bool + default y if BR2_TOOLCHAIN_HAS_LIBATOMIC + default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_arm + default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_armeb + default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_xtensa + default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_ARCH_IS_64 + +# - libquadmath is not needed/available on all architectures (but gcc +# correctly handles this already). +# - At least, libquadmath is available on: +# - i*86 +# - x86_64 +# - When available, libquadmath requires wchar support. +config BR2_TOOLCHAIN_HAS_LIBQUADMATH + bool + default y if BR2_i386 || BR2_x86_64 endmenu diff --git a/toolchain/toolchain-common.in b/toolchain/toolchain-common.in deleted file mode 100644 index 8941e0f3cd..0000000000 --- a/toolchain/toolchain-common.in +++ /dev/null @@ -1,469 +0,0 @@ -# Generic toolchain options - -# we want gdb config in the middle of both source and external -# toolchains, but mconf won't let us source the same file twice, -# so put it here instead -source "package/gdb/Config.in.host" - -comment "Toolchain Generic Options" - -# https://sourceware.org/bugzilla/show_bug.cgi?id=19615 -# Affect toolchains built with binutils 2.26 (fixed in binutils 2.26.1). -config BR2_TOOLCHAIN_HAS_BINUTILS_BUG_19615 - bool - -# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64735 -# exception_ptr, nested_exception, and future from libstdc++ are not -# available for architectures not supporting always lock-free atomic -# ints before GCC 7 -config BR2_TOOLCHAIN_HAS_GCC_BUG_64735 - bool - default y if BR2_nios2 - default y if BR2_ARM_CPU_ARMV4 - default y if BR2_ARM_CPU_ARMV5 - default y if BR2_sparc_v8 - default y if BR2_m68k_cf5208 - depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_7 - -config BR2_TOOLCHAIN_HAS_NATIVE_RPC - bool - -config BR2_USE_WCHAR - bool - -config BR2_ENABLE_LOCALE - bool - -config BR2_INSTALL_LIBSTDCPP - bool - -config BR2_TOOLCHAIN_HAS_FORTRAN - bool - -config BR2_TOOLCHAIN_HAS_THREADS - bool - -config BR2_TOOLCHAIN_HAS_THREADS_DEBUG - bool - -config BR2_TOOLCHAIN_HAS_THREADS_NPTL - bool - -config BR2_TOOLCHAIN_HAS_SHADOW_PASSWORDS - bool - -config BR2_TOOLCHAIN_HAS_SSP - bool - -config BR2_TOOLCHAIN_SUPPORTS_PIE - bool - -config BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_COPY - bool "Copy gconv libraries" - depends on BR2_TOOLCHAIN_USES_GLIBC - help - The gconv libraries are used to convert between different - character sets (charsets). - - Say 'y' if you need to store and/or display different charsets. - -config BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_LIST - string "Gconv libraries to copy" - depends on BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_COPY - help - Set to the list of gconv libraries to copy. - Leave empty to copy all gconv libraries. - - Specify only the basename of the libraries, leave - out the .so extension. Eg.: - IBM850 ISO8859-15 UNICODE - - Note: the full set of gconv libs are ~8MiB (on ARM). - -# This boolean is true if the toolchain provides a built-in full -# featured gettext implementation (glibc), and false if only a stub -# gettext implementation is provided (uclibc, musl) -config BR2_TOOLCHAIN_HAS_FULL_GETTEXT - bool - -config BR2_USE_MMU - bool "Enable MMU support" if BR2_ARCH_HAS_MMU_OPTIONAL - default y if BR2_ARCH_HAS_MMU_OPTIONAL || BR2_ARCH_HAS_MMU_MANDATORY - help - If your target has a MMU, you should say Y here. If you - are unsure, just say Y. - -config BR2_TARGET_OPTIMIZATION - string "Target Optimizations" - default "" - help - Optimizations to use when building for the target host. - NOTE: gcc optimization level is defined in build options. - -config BR2_TARGET_LDFLAGS - string "Target linker options" - help - Extra options to pass to the linker when building for the target. - - Note that options with a '$' sign (eg. -Wl,-rpath='$ORIGIN/../lib') - are not supported. - -config BR2_ECLIPSE_REGISTER - bool "Register toolchain within Eclipse Buildroot plug-in" - help - This options tells Buildroot to generate the necessary - configuration files to make your toolchain appear within - Eclipse, through the Eclipse Buildroot plugin. - -# Options for packages to depend on, if they require at least a -# specific version of the kernel headers. -# Toolchains should choose the adequate option (ie. the highest -# version, not all of them). -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0 - bool - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_1 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_1 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_3 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_3 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_5 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_6 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_5 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_6 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_8 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_9 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_8 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_9 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_15 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_16 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_15 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_16 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_18 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_19 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_18 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_19 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_1 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_2 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_1 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_2 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_6 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_7 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_6 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_8 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_7 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_9 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_8 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_10 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_9 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_11 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_10 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_11 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_13 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_14 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_13 - -config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_15 - bool - select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_14 - -# This order guarantees that the highest version is set, as kconfig -# stops affecting a value on the first matching default. -config BR2_TOOLCHAIN_HEADERS_AT_LEAST - string - default "4.15" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_15 - default "4.14" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_14 - default "4.13" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_13 - default "4.12" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_12 - default "4.11" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_11 - default "4.10" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_10 - default "4.9" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_9 - default "4.8" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_8 - default "4.7" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_7 - default "4.6" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_6 - default "4.5" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5 - default "4.4" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4 - default "4.3" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3 - default "4.2" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_2 - default "4.1" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_1 - default "4.0" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0 - default "3.19" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_19 - default "3.18" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_18 - default "3.17" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17 - default "3.16" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_16 - default "3.15" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_15 - default "3.14" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14 - default "3.13" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13 - default "3.12" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12 - default "3.11" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11 - default "3.10" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10 - default "3.9" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_9 - default "3.8" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_8 - default "3.7" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7 - default "3.6" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_6 - default "3.5" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_5 - default "3.4" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4 - default "3.3" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_3 - default "3.2" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2 - default "3.1" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_1 - default "3.0" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0 - default "2.6" - -config BR2_TOOLCHAIN_GCC_AT_LEAST_4_3 - bool - -config BR2_TOOLCHAIN_GCC_AT_LEAST_4_4 - bool - select BR2_TOOLCHAIN_GCC_AT_LEAST_4_3 - -config BR2_TOOLCHAIN_GCC_AT_LEAST_4_5 - bool - select BR2_TOOLCHAIN_GCC_AT_LEAST_4_4 - -config BR2_TOOLCHAIN_GCC_AT_LEAST_4_6 - bool - select BR2_TOOLCHAIN_GCC_AT_LEAST_4_5 - -config BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 - bool - select BR2_TOOLCHAIN_GCC_AT_LEAST_4_6 - -config BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 - bool - select BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 - -config BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 - bool - select BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 - -config BR2_TOOLCHAIN_GCC_AT_LEAST_5 - bool - select BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 - -config BR2_TOOLCHAIN_GCC_AT_LEAST_6 - bool - select BR2_TOOLCHAIN_GCC_AT_LEAST_5 - -config BR2_TOOLCHAIN_GCC_AT_LEAST_7 - bool - select BR2_TOOLCHAIN_GCC_AT_LEAST_6 - -# This order guarantees that the highest version is set, as kconfig -# stops affecting a value on the first matching default. -config BR2_TOOLCHAIN_GCC_AT_LEAST - string - default "7" if BR2_TOOLCHAIN_GCC_AT_LEAST_7 - default "6" if BR2_TOOLCHAIN_GCC_AT_LEAST_6 - default "5" if BR2_TOOLCHAIN_GCC_AT_LEAST_5 - default "4.9" if BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 - default "4.8" if BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 - default "4.7" if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 - default "4.6" if BR2_TOOLCHAIN_GCC_AT_LEAST_4_6 - default "4.5" if BR2_TOOLCHAIN_GCC_AT_LEAST_4_5 - default "4.4" if BR2_TOOLCHAIN_GCC_AT_LEAST_4_4 - default "4.3" if BR2_TOOLCHAIN_GCC_AT_LEAST_4_3 - -config BR2_TOOLCHAIN_HAS_MNAN_OPTION - bool - default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 - -config BR2_TOOLCHAIN_HAS_SYNC_1 - bool - default y - depends on !BR2_bfin - depends on !BR2_m68k_cf - depends on !BR2_microblaze - depends on !BR2_sparc - depends on !(BR2_arc && !BR2_ARC_ATOMIC_EXT) - -config BR2_TOOLCHAIN_HAS_SYNC_2 - bool - default y if BR2_TOOLCHAIN_HAS_SYNC_1 - -config BR2_TOOLCHAIN_HAS_SYNC_4 - bool - default y - depends on !BR2_m68k_cf - depends on !BR2_sparc - depends on !(BR2_arc && !BR2_ARC_ATOMIC_EXT) - -# The availability of __sync for 8-byte types on ARM is somewhat -# complicated: -# -# - It appeared in gcc starting with gcc 4.7. -# -# - On ARMv7, there is no problem, it can be directly implemented in -# userspace. -# -# - On < ARMv7, it requires help from the kernel. Unfortunately, the -# libgcc code implementing 8-byte __sync with the help from the -# kernel calls __write() when a failure occurs, which is a function -# internal to glibc, not available in uClibc and musl. This means -# that the 8-byte __sync operations are not available on < ARMv7 -# with uClibc and musl. This problem was fixed as part of gcc -# PR68059, which was backported to the gcc 5 branch, but isn't yet -# part of any gcc 5.x release. -# -config BR2_TOOLCHAIN_ARM_HAS_SYNC_8 - bool - default y - depends on BR2_arm || BR2_armeb - depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 - depends on BR2_TOOLCHAIN_USES_GLIBC || BR2_ARM_CPU_ARMV7A - -# 8-byte intrinsics available on most x86 CPUs, except a few old ones -config BR2_TOOLCHAIN_X86_HAS_SYNC_8 - bool - default y - depends on BR2_i386 - depends on !BR2_x86_i486 - depends on !BR2_x86_c3 - depends on !BR2_x86_winchip_c6 - depends on !BR2_x86_winchip2 - -# 8-byte intrinsics available: -# - On all 64 bits architecture -# - On a certain combinations of ARM platforms -# - On certain x86 32 bits CPUs -config BR2_TOOLCHAIN_HAS_SYNC_8 - bool - default y if BR2_ARCH_IS_64 - default y if BR2_TOOLCHAIN_ARM_HAS_SYNC_8 - default y if BR2_TOOLCHAIN_X86_HAS_SYNC_8 - -# libatomic is available since gcc 4.8, when thread support is -# enabled. Also, libatomic doesn't recognize "uclinux" as a valid OS -# part of the tuple, and is therefore not build on uclinux targets, -# which is why BR2_BINFMT_FLAT configurations are excluded. -config BR2_TOOLCHAIN_HAS_LIBATOMIC - bool - default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 && \ - BR2_TOOLCHAIN_HAS_THREADS && \ - !BR2_BINFMT_FLAT - -# __atomic intrinsics are available: -# - with gcc 4.8, either through built-ins or libatomic, on all -# architectures. Since we don't want to separate the cases where -# libatomic is needed vs. not needed, we simplify thing and only -# support situations where libatomic is available, even if on some -# architectures libatomic is not strictly needed as all __atomic -# intrinsics might be built-in. The only case where libatomic is -# missing entirely is when the toolchain does not have support for -# threads. However, a package that does not need threads but still -# uses atomics is quite a corner case, which does not warrant the -# added complexity. -# - with gcc 4.7, libatomic did not exist, so only built-ins are -# available. This means that __atomic can only be used in a subset -# of the architectures -config BR2_TOOLCHAIN_HAS_ATOMIC - bool - default y if BR2_TOOLCHAIN_HAS_LIBATOMIC - default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_arm - default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_armeb - default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_xtensa - default y if BR2_TOOLCHAIN_GCC_AT_LEAST_4_7 && BR2_ARCH_IS_64 - -# - libquadmath is not needed/available on all architectures (but gcc -# correctly handles this already). -# - At least, libquadmath is available on: -# - i*86 -# - x86_64 -# - When available, libquadmath requires wchar support. -config BR2_TOOLCHAIN_HAS_LIBQUADMATH - bool - default y if BR2_i386 || BR2_x86_64