| menu "Toolchain" |
| |
| # Invisible option that makes sure the toolchain package always gets |
| # built |
| config BR2_TOOLCHAIN |
| bool |
| default y |
| |
| # Should be selected for glibc or eglibc |
| config BR2_TOOLCHAIN_USES_GLIBC |
| bool |
| select BR2_USE_WCHAR |
| select BR2_ENABLE_LOCALE |
| select BR2_TOOLCHAIN_HAS_FULL_GETTEXT |
| select BR2_TOOLCHAIN_HAS_THREADS |
| select BR2_TOOLCHAIN_HAS_THREADS_DEBUG |
| select BR2_TOOLCHAIN_HAS_THREADS_NPTL |
| select BR2_TOOLCHAIN_HAS_SHADOW_PASSWORDS |
| select BR2_TOOLCHAIN_SUPPORTS_PIE |
| |
| config BR2_TOOLCHAIN_USES_UCLIBC |
| bool |
| select BR2_TOOLCHAIN_SUPPORTS_PIE if !BR2_m68k && !BR2_microblaze && !BR2_STATIC_LIBS |
| |
| config BR2_TOOLCHAIN_USES_MUSL |
| bool |
| select BR2_USE_WCHAR |
| select BR2_ENABLE_LOCALE |
| select BR2_TOOLCHAIN_HAS_THREADS |
| select BR2_TOOLCHAIN_HAS_THREADS_DEBUG |
| select BR2_TOOLCHAIN_HAS_THREADS_NPTL |
| select BR2_TOOLCHAIN_SUPPORTS_PIE if !BR2_STATIC_LIBS |
| |
| choice |
| prompt "Toolchain type" |
| help |
| Select whether to use the toolchain provided by buildroot |
| or an external toolchain. |
| |
| Some vendors provide toolchains in binary form, some in |
| source form. |
| |
| config BR2_TOOLCHAIN_BUILDROOT |
| bool "Buildroot toolchain" |
| depends on BR2_ARCH_HAS_TOOLCHAIN_BUILDROOT |
| select BR2_TOOLCHAIN_HAS_SHADOW_PASSWORDS |
| |
| config BR2_TOOLCHAIN_EXTERNAL |
| bool "External toolchain" |
| help |
| Select if you want to use an existing cross-compiling |
| toolchain. Buildroot can either download automatically a |
| toolchain, or use an already installed toolchain. |
| |
| endchoice |
| |
| source "toolchain/toolchain-buildroot/Config.in" |
| source "toolchain/toolchain-external/Config.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 |
| |
| # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85180. This bug no |
| # longer exists in gcc 8.x. |
| config BR2_TOOLCHAIN_HAS_GCC_BUG_85180 |
| bool |
| default y if BR2_microblaze |
| |
| # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85862 |
| # An infinite loop exists in the find_base_term() logic of 6.x |
| # on microblaze. http://autobuild.buildroot.net/results/158e8ebb39713e1b436a5cc1a1916f46c30694df/ |
| config BR2_TOOLCHAIN_HAS_GCC_BUG_85862 |
| bool |
| default y if BR2_microblaze |
| 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 |
| |
| config BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_16 |
| bool |
| select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_15 |
| |
| # 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 "4.16" if BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_16 |
| 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_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 |
