[libcxx-commits] [PATCH] D67731: Fix arm build failer with libgcc

Adhemerval Zanella via Phabricator via libcxx-commits libcxx-commits at lists.llvm.org
Wed Sep 18 13:32:45 PDT 2019

zatrazz created this revision.
zatrazz added reviewers: echristo, EricWF, saugustine.
zatrazz added a project: LLVM.
Herald added subscribers: libcxx-commits, erik.pilkington, christof, kristof.beyls, mgorny.
Herald added a project: libc++.
zatrazz abandoned this revision.

Both arm32 armv7/armv8 bots are failing to build due to a linking

[100%] Built target cxxabi_static
CMakeFiles/cxxabi_shared.dir/cxa_demangle.cpp.o: In function `(anonymous namespace)::itanium_demangle::OutputStream::writeUnsigned(unsigned long long, bool)':
/home/buildslave/buildslave/libcxx-libcxxabi-libunwind-armv7-linux-noexceptions/llvm/projects/libcxxabi/src/demangle/Utility.h:55: undefined reference to `__aeabi_uldivmod'
/home/buildslave/buildslave/libcxx-libcxxabi-libunwind-armv7-linux-noexceptions/llvm/projects/libcxxabi/src/demangle/Utility.h:56: undefined reference to `__aeabi_uldivmod'
clang-6.0: error: linker command failed with exit code 1 (use -v to see invocation)

It seems after r371273 OutputStream is used more extensively and
is pulling OutputStream::writeUnsigned (which thus requires unsigned
integer module).

The straightfoward fix is to explicit link against libgcc if
compiler-rt is not used.

Fix gdb_pretty_printer_test on python3

First issue is the 'next' iteration method which has changed its
name to '_next_'.  The another is the division method, where it
requires to use the floor division so iteration converge.

  rG LLVM Github Monorepo



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