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package/llvm: fix build with gcc < 5.1

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Fixes:
http://autobuild.buildroot.net/results/0c046a1b57a4f0b992333003d41062e1b256eb0d

Signed-off-by: Valentin Korenblit <valentinkorenblit@gmail.com>
[Arnout: add explanatory comment suggested by Romain]
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
This commit is contained in:
Valentin Korenblit 2019-04-13 10:45:55 +02:00 committed by Arnout Vandecappelle (Essensium/Mind)
parent 8b84b90162
commit 2a17fb6057
1 changed files with 7 additions and 0 deletions
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7
package/llvm/llvm.mk
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@ -17,6 +17,13 @@ LLVM_INSTALL_STAGING = YES
HOST_LLVM_DEPENDENCIES = host-python HOST_LLVM_DEPENDENCIES = host-python
LLVM_DEPENDENCIES = host-llvm LLVM_DEPENDENCIES = host-llvm
# LLVM >= 9.0 will soon require C++14 support, building llvm 8.x using a
# toolchain using gcc < 5.1 gives an error but actually still works. Setting
# this option makes it still build with gcc >= 4.8.
# https://reviews.llvm.org/D57264
HOST_LLVM_CONF_OPTS += -DLLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN=ON
LLVM_CONF_OPTS += -DLLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN=ON
# Don't build clang libcxx libcxxabi lldb compiler-rt lld polly as llvm subprojects # Don't build clang libcxx libcxxabi lldb compiler-rt lld polly as llvm subprojects
# This flag assumes that projects are checked out side-by-side and not nested # This flag assumes that projects are checked out side-by-side and not nested
HOST_LLVM_CONF_OPTS += -DLLVM_ENABLE_PROJECTS="" HOST_LLVM_CONF_OPTS += -DLLVM_ENABLE_PROJECTS=""