From 8f921700b7b16393ae8d6d15990974c26a168c37 Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Fri, 6 Apr 2018 11:00:12 +0200 Subject: [PATCH] llvm: add dependency on !BR2_TOOLCHAIN_HAS_GCC_BUG_64735 LLVM uses std::shared_future, which until gcc 7.x isn't available on architectures that don't provide lock-free atomics, see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64735. Buildroot already has a BR2_TOOLCHAIN_HAS_GCC_BUG_64735 option to handle such a case, so simply add this new dependency to LLVM. It will make sure LLVM doesn't get built on ARMv5 platforms using a gcc older than 7.x. Fixes: http://autobuild.buildroot.net/results/ada497f6a8d20fa1a9adb2b17a138d7b726a6cdc/ Signed-off-by: Thomas Petazzoni Acked-by: Valentin Korenblit Signed-off-by: Thomas Petazzoni --- package/llvm/Config.in | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/package/llvm/Config.in b/package/llvm/Config.in index 70f73f4858..15f2507ef2 100644 --- a/package/llvm/Config.in +++ b/package/llvm/Config.in @@ -18,6 +18,7 @@ config BR2_PACKAGE_LLVM depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 depends on BR2_TOOLCHAIN_HAS_THREADS depends on BR2_INSTALL_LIBSTDCPP + depends on !BR2_TOOLCHAIN_HAS_GCC_BUG_64735 # std::shared_future help The LLVM Project is a collection of modular and reusable compiler and toolchain technologies. @@ -38,3 +39,7 @@ comment "llvm needs a toolchain w/ threads, C++, gcc >= 4.8, host gcc >= 4.8" depends on BR2_PACKAGE_LLVM_ARCH_SUPPORTS depends on !BR2_TOOLCHAIN_HAS_THREADS || !BR2_INSTALL_LIBSTDCPP || \ !BR2_HOST_GCC_AT_LEAST_4_8 || !BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 + +comment "llvm needs a toolchain not affected by GCC bug 64735" + depends on BR2_PACKAGE_LLVM_ARCH_SUPPORTS + depends on BR2_TOOLCHAIN_HAS_GCC_BUG_64735 -- 2.30.2