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Joseph Tremoulet 69441e6c62 [CMake] Flag recursive cmake invocations for cross-compile 
Summary:
Cross-compilation uses recursive cmake invocations to build native host
tools.  These recursive invocations only forward a fixed set of
variables/options, since the native environment is generally the default.
This change adds -DLLVM_TARGET_IS_CROSSCOMPILE_HOST=TRUE to the recursive
cmake invocations, so that cmake files can distinguish these recursive
invocations from top-level ones, which can explain why expected options
are unset.

LLILC will use this to avoid trying to generate its build rules in the
crosscompile native host target (where it is not needed), which would fail
if attempted because LLILC requires a cmake variable passed on the command
line, which is not forwarded in the recursive invocation.

Reviewers: rnk, beanz

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D12679

llvm-svn: 247151
2015-09-09 14:57:06 +00:00
..
modules [CMake] Flag recursive cmake invocations for cross-compile 2015-09-09 14:57:06 +00:00
platforms Doing some cleanup to the iOS toolchain. 2015-03-12 16:19:16 +00:00
config-ix.cmake Remove the configure and cmake checks for sys/wait.h 2015-08-04 06:29:58 +00:00
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README 

See docs/CMake.html for instructions on how to build LLVM with CMake.