[llvm-commits] [PATCH] Cross-building for 32-bits from CMake

[Tim Northover]

Hi,

CMake is supposed to support -DLLVM_BUILD_32_BITS to build a 32-bit
version of LLVM from a 64-bit system. However, it implements the flag
like this:

list(APPEND CMAKE_EXE_LINKER_FLAGS -m32)

the problem is that CMAKE_EXE_LINKER_FLAGS (and _SHARED_) aren't
actually lists in the CMake sense (separated by ';'), so this can give
you a linker command containing the argument ";-m32" which goes
horribly wrong.

I assume the variable was empty when this feature was implemented so
no semicolon was needed. The attached patch fixes this issue.

Ok to commit?

Tim.