[LLVMbugs] [Bug 21057] New: compiler-rt: CMakeLists.txt applies -m64 option for non-X86 platforms.

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=21057

            Bug ID: 21057
           Summary: compiler-rt: CMakeLists.txt applies -m64 option for
                    non-X86 platforms.
           Product: compiler-rt
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: compiler-rt
          Assignee: unassignedbugs at nondot.org
          Reporter: llvm.mail.list at gmail.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

compiler-rt/CMakeLists.txt contains the following lines:

if (NOT MSVC)
  set(TARGET_64_BIT_CFLAGS "-m64")
  set(TARGET_32_BIT_CFLAGS "-m32")
else()
  set(TARGET_64_BIT_CFLAGS "")
  set(TARGET_32_BIT_CFLAGS "")
endif()

If LLVM is compiled for ARM using appropriate cross compiler for that platform,
cmake fails as it passes -m64 to the compiler which does not accept this
option.

-m64 is relevant to X86/64 only. The conditional should also check if the
platform is X86.

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