llvm 6.0.1

[matiasgarciaisaia]

Bugfix release of LLVM - includes some bugs that prevent Crystal to be built with LLVM 6.0.0

Changes included fixes tracked in https://bugs.llvm.org/show_bug.cgi?id=36649

[ilovezfs]

Yay!

[commitay]

Thanks @matiasgarciaisaia!

[ilovezfs]

@matiasgarciaisaia crystal fails with 6.0.1:

==> make deps
Using /usr/local/opt/llvm/bin/llvm-config [version=6.0.1]
clang++ -c  -o src/llvm/ext/llvm_ext.o src/llvm/ext/llvm_ext.cc -I/usr/local/Cellar/llvm/6.0.1/include  -stdlib=libc++ -fPIC -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -std=c++11 -Wall -W -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wcovered-switch-default -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wstring-conversion -DNDEBUG   -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS
clang -fPIC    -c -o src/ext/sigfault.o src/ext/sigfault.c
ar -rcs src/ext/libcrystal.a src/ext/sigfault.o
==> bin/crystal build -D without_openssl -D without_zlib -o .build/crystal src/compiler/crystal.cr --release --no-debug
duplicate symbol _LLVMDIBuilderCreateCompileUnit in:
    /private/tmp/crystal-20180705-2405-il54nx/crystal-0.25.1/src/llvm/ext/llvm_ext.o
    /usr/local/Cellar/llvm/6.0.1/lib/libLLVMCore.a(DebugInfo.cpp.o)
duplicate symbol _LLVMDIBuilderFinalize in:
    /private/tmp/crystal-20180705-2405-il54nx/crystal-0.25.1/src/llvm/ext/llvm_ext.o
    /usr/local/Cellar/llvm/6.0.1/lib/libLLVMCore.a(DebugInfo.cpp.o)
duplicate symbol _LLVMDIBuilderCreateFile in:
    /private/tmp/crystal-20180705-2405-il54nx/crystal-0.25.1/src/llvm/ext/llvm_ext.o
    /usr/local/Cellar/llvm/6.0.1/lib/libLLVMCore.a(DebugInfo.cpp.o)
ld: 3 duplicate symbols for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Error: execution of command failed with code: 1: `clang "${@}" -o '/private/tmp/crystal-20180705-2405-il54nx/crystal-0.25.1/.build/crystal'  -rdynamic  /private/tmp/crystal-20180705-2405-il54nx/crystal-0.25.1/src/llvm/ext/llvm_ext.o `/usr/local/opt/llvm/bin/llvm-config --libs --system-libs --ldflags 2> /dev/null` -lstdc++ -lpcre -lgc -lpthread /private/tmp/crystal-20180705-2405-il54nx/crystal-0.25.1/src/ext/libcrystal.a -levent -liconv -ldl -L/usr/lib -L/usr/local/lib`
/usr/local/Homebrew/Library/Homebrew/debrew.rb:11:in `raise'
BuildError: Failed executing: bin/crystal build -D without_openssl -D without_zlib -o .build/crystal src/compiler/crystal.cr --release --no-debug
1. raise
2. ignore
3. backtrace
4. irb
5. shell
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