[llvm-bugs] [Bug 31035] New: Clang 3.8 can't build libunwind 3.9

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=31035

            Bug ID: 31035
           Summary: Clang 3.8 can't build libunwind 3.9
           Product: clang
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Headers
          Assignee: unassignedclangbugs at nondot.org
          Reporter: renato.golin at linaro.org
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

I just realised clang 3.8 comes with an unwind.h which doesn't
have _URC_OK defined (introduced in r262178, just after 3.8 split).

But on that commit, the personality routine depends on it for EHABI
calls, which is defined by default on ARM environments.

The end result is that I can only use Clang 3.9+ to compile libunwind 3.9+.

http://buildmaster.tcwglab.linaro.org/builders/clang-cmake-armv7-a15-full/builds/1788/steps/build%20stage%201/logs/stdio

compiler-rt/lib/builtins/gcc_personality_v0.c:149:57: error: use of
undeclared identifier '_URC_OK'; did you mean '_UVRSR_OK'?
    if (__gnu_unwind_frame(exceptionObject, context) != _URC_OK)
                                                        ^~~~~~~

The alternative is to use Clang 3.9 for now, but it would be good to document
if we're going to accept this API change (and force 2-tage builds) or fix the
personality routine to accept either headers.

-- 
You are receiving this mail because:
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-bugs/attachments/20161116/ef431e71/attachment.html>