[Buildroot] [PATCH] package/llvm: set the path to llvm-config

[Peter Korsgaard <peter@korsgaard.com>]

>>>>> "Romain" == Romain Naour <romain.naour@smile.fr> writes:

 > While building llvm for the target (x86_64), the build failded due to
 > path poisoning (-I/usr/include/libxml2) while building NATIVE tools
 > (i.e for the host). The llvm package try to build a tool for the host
 > with the cross-compiler which doesn't work when the paranoid toolchain
 > wrapper (BR2_COMPILER_PARANOID_UNSAFE_PATH) is enabled.

 > We know that llvm (target) needs llvm-tablegen and llvm-config build by
 > host-llvm, but only LLVM_TABLEGEN is provided by llvm.mk. Adding
 > LLVM_CONFIG_PATH=$(HOST_DIR)/bin/llvm-config for llvm (target)
 > fixes the path poisoining issue since llvm doesn't build the NATIVE
 > variant.

 > Signed-off-by: Romain Naour <romain.naour@smile.fr>
 > Cc: Valentin Korenblit <valentinkorenblit@gmail.com>
 > Cc: Matthew Weber <matthew.weber@rockwellcollins.com>
 > ---
 > Valentin, I'm not sure why we don't set LLVM_CONFIG_PATH in llvm.mk for
 > the target variant? We provide it for clang and libclc, why not for
 > llvm ?

Committed to 2018.11.x, thanks.

-- 
Bye, Peter Korsgaard