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<p><font size="-1">Ubuntu 20.10 x86_64<br>
<br>
cd llvm-project<br>
<br>
rm -rf build<br>
mkdir build<br>
cd build<br>
<br>
cmake -G Ninja
-DLLVM_ENABLE_PROJECTS="clang;llvm;libcxx;libcxxabi"
-DCMAKE_BUILD_TYPE="Release" -DLLVM_TARGETS_TO_BUILD=X86
-DLLVM_ENABLE_LIBPFM=OFF -DRUN_HAVE_GNU_POSIX_REGEX=0
-DRUN_HAVE_THREAD_SAFETY_ATTRIBUTES=0 -Wno-dev ../llvm &>
~/Documents/cmake.log<br>
<br>
In cmake.log<br>
<br>
-- The C compiler identification is GNU 10.2.0<br>
-- The CXX compiler identification is GNU 10.2.0<br>
-- The ASM compiler identification is GNU<br>
<br>
-- Linker detection: GNU ld<br>
<br>
-- Configuring done<br>
-- Generating done<br>
CMake Warning:<br>
Manually-specified variables were not used by the project:<br>
<br>
RUN_HAVE_THREAD_SAFETY_ATTRIBUTES<br>
<br>
<br>
-- Build files have been written to:
/home/nnelson/Documents/llvm-project/build<br>
<br>
ninja -j 31 &> ~/Documents/ninja.log<br>
<br>
Tail of ~/Documents/ninja.log<br>
<br>
[3394/3395] Linking CXX executable bin/llvm-readobj<br>
[3395/3395] Generating ../../bin/llvm-readelf<br>
<br>
cd bin<br>
./clang --version<br>
clang version 12.0.0 (<a class="moz-txt-link-freetext" href="https://github.com/llvm/llvm-project.git">https://github.com/llvm/llvm-project.git</a>
76c0092665867a6defcd328ba0d0d976eb65d991)<br>
Target: x86_64-unknown-linux-gnu<br>
<br>
grep -n cxa_aux_runtime ~/Documents/ninja.log<br>
<br>
462:[391/3395] Building CXX object
projects/libcxxabi/src/CMakeFiles/cxxabi_static.dir/cxa_aux_runtime.cpp.o<br>
546:[409/3395] Building CXX object
projects/libcxxabi/src/CMakeFiles/cxxabi_shared.dir/cxa_aux_runtime.cpp.o<br>
<br>
sed -n 462,463p ~/Documents/ninja.log<br>
<br>
[391/3395] Building CXX object
projects/libcxxabi/src/CMakeFiles/cxxabi_static.dir/cxa_aux_runtime.cpp.o<br>
[392/3395] Building CXX object
lib/DebugInfo/CodeView/CMakeFiles/LLVMDebugInfoCodeView.dir/LazyRandomTypeCollection.cpp.o<br>
<br>
sed -n 546,547p ~/Documents/ninja.log<br>
<br>
[409/3395] Building CXX object
projects/libcxxabi/src/CMakeFiles/cxxabi_shared.dir/cxa_aux_runtime.cpp.o<br>
[410/3395] Building CXX object
projects/libcxxabi/src/CMakeFiles/cxxabi_static.dir/cxa_thread_atexit.cpp.o<br>
<br>
The errors did not show on this run.<br>
<br>
Neil Nelson<br>
</font><br>
</p>
<div class="moz-cite-prefix">On 12/31/20 1:52 PM, users users via
llvm-dev wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAEwa1g155HpN3FuYscHjv_n7rbBBbEv17O08BfabEdMbZ1ryUw@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">Dear LLVM developers:
<div><br>
</div>
<div>I am trying to build LLVM 11 & subprojects
"clang;libcxx;libcxxabi" with gcc 8.2.0, but it failed with
the following error messages:</div>
<div><span style="color:rgb(0,0,0);white-space:pre-wrap">
</span></div>
<div><span style="color:rgb(0,0,0);white-space:pre-wrap">....../build/libcxxabi/src/cxa_aux_runtime.cpp</span><br>
</div>
<div>
<pre style="white-space:pre-wrap;color:rgb(0,0,0)">In file included from .../build/libcxx/include/stdlib.h:94,
from .../build/libcxx/include/cstdlib:86,
from .../build/libcxx/include/exception:82,
from .../build/libcxx/include/new:85,
from .../build/libcxxabi/src/cxa_aux_runtime.cpp:14:
.../8.2.0/include/c++/8.2.0/stdlib.h:38:12: error: 'std::abort' has not been declared
using std::abort;
^~~~~
.../8.2.0/include/c++/8.2.0/stdlib.h:39:12: error: 'std::atexit' has not been declared
using std::atexit;
^~~~~~
.../8.2.0/include/c++/8.2.0/stdlib.h:40:12: error: 'std::exit' has not been declared</pre>
<pre style="white-space:pre-wrap;color:rgb(0,0,0)">.......... a lot more on std::xxxx not declared errors ........</pre>
<pre style="white-space:pre-wrap;color:rgb(0,0,0)">
</pre>
<pre style="white-space:pre-wrap;color:rgb(0,0,0)">I try it on IBM power8 and X86_64 both produced the similar errors on cxa_aux_runtime.cpp</pre>
<pre style="white-space:pre-wrap;color:rgb(0,0,0)">Any advice to fix the issue? Many thanks in advance!</pre>
<pre style="white-space:pre-wrap;color:rgb(0,0,0)">
</pre>
<pre style="white-space:pre-wrap;color:rgb(0,0,0)">Happy New Year!</pre>
<pre style="white-space:pre-wrap;color:rgb(0,0,0)">Shelton</pre>
</div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<pre class="moz-quote-pre" wrap="">_______________________________________________
LLVM Developers mailing list
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</pre>
</blockquote>
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