forked from OSchip/llvm-project
128e1ebd93
Runtimes variables in a multi-target environment are defined like:
RUNTIMES_target_VARIABLE_NAME
RUNTIMES_target+multi_VARIABLE_NAME
In my case, I have a downstream runtimes cache that does the following:
set(RUNTIMES_${target}+except_LIBCXXABI_ENABLE_EXCEPTIONS ON CACHE BOOL "")
set(RUNTIMES_${target}_LIBCXX_ENABLE_EXCEPTIONS OFF CACHE BOOL "")
I found that I was always getting the 'target' variable value (OFF) in
my 'target+except' build, which was unexpected. This behavior was
caused by the loop in llvm/runtimes/CMakeLists.txt that runs through all
variable names, adding '-DVARIABLE_NAME=' options to the subsequent
external project's cmake command.
The issue is that the loop does a single pass, such that if the 'target'
value appears in the cache after the 'target+except' value, the 'target'
value will take precedence. I suggest in my change here that the more
specific 'target+except' value should take precedence always, without
relying on CMake cache ordering.
Differential Revision: https://reviews.llvm.org/D71570
Patch By: JamesNagurne
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| .. | ||
| CMakeLists.txt | ||
| Components.cmake.in | ||
| llvm-strip-link.in | ||