[Buildroot] [git commit] llvm: add dependency on !BR2_TOOLCHAIN_HAS_GCC_BUG_64735
Thomas Petazzoni
thomas.petazzoni at bootlin.com
Fri Apr 6 19:24:28 UTC 2018
commit: https://git.buildroot.net/buildroot/commit/?id=8f921700b7b16393ae8d6d15990974c26a168c37
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/master
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 <thomas.petazzoni at bootlin.com>
Acked-by: Valentin Korenblit <valentin.korenblit at smile.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
---
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
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