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    <p>Dear,</p>
    <p>I try to build llvm 8.0.0 (with clang compiler-rt libcxx
      libcxxabi lldb lld polly). But At libcxx build stage I got a wall
      of error: 'std::abort' has not been declared</p>
    <p>This happen when the builder compile the file:
      libcxxabi/src/cxa_aux_runtime.cpp</p>
    <p>I build using gcc 8.3.0 and I am able to build and run some toys
      code (see below)</p>
    <p>The command used to compile is (they are some duplicated flag due
      to var env): <br>
    </p>
    <p>____________________________________________________________________________<br>
    </p>
    <p>$ /opt/gcc/bin/g++  -D_GNU_SOURCE
      -D_LIBCPP_DISABLE_EXTERN_TEMPLATE
      -D_LIBCPP_ENABLE_CXX17_REMOVED_UNEXPECTED_FUNCTIONS
      -D_LIBCXXABI_BUILDING_LIBRARY -D__STDC_CONSTANT_MACROS
      -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS
      -I/tmp/BUILD/llvm-8.0.0/build/projects/libcxxabi/src
      -I/tmp/BUILD/libcxxabi/src -I/usr/include/libxml2
      -I/tmp/BUILD/llvm-8.0.0/build/include
      -I/tmp/BUILD/llvm-8.0.0/include -I/tmp/BUILD/libcxxabi/include
      -I/tmp/BUILD/libcxx/include  -O3 -g -Wall -Wformat-security
      -Wp,-D_GLIBCXX_ASSERTIONS -fPIC -fexceptions
      -fstack-protector-strong -grecord-gcc-switches
      -fasynchronous-unwind-tables -mtune=generic 
      -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1   -std=gnu++14
      -fPIC -fvisibility-inlines-hidden -Werror=date-time -std=c++11
      -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual
      -Wno-missing-field-initializers -pedantic -Wno-long-long
      -Wimplicit-fallthrough -Wno-maybe-uninitialized
      -Wno-class-memaccess -Wno-noexcept-type -Wdelete-non-virtual-dtor
      -Wno-comment -ffunction-sections -fdata-sections  -O3 -g -Wall
      -Wformat-security -Wp,-D_GLIBCXX_ASSERTIONS -fPIC -fexceptions
      -fstack-protector-strong -grecord-gcc-switches
      -fasynchronous-unwind-tables -mtune=generic 
      -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1   -std=gnu++14
      -fPIC   -nostdinc++ -Werror=return-type -W -Wall -Wchar-subscripts
      -Wconversion -Wmissing-braces -Wunused-function -Wshadow
      -Wsign-compare -Wsign-conversion -Wstrict-aliasing=2
      -Wstrict-overflow=4 -Wunused-parameter -Wunused-variable
      -Wwrite-strings -Wundef -Wno-error -pedantic -fstrict-aliasing
      -funwind-tables -D_DEBUG -std=c++11 -o
      CMakeFiles/cxxabi_objects.dir/cxa_aux_runtime.cpp.o -c
      /tmp/BUILD/libcxxabi/src/cxa_aux_runtime.cpp<br>
      In file included from /tmp/BUILD/libcxx/include/stdlib.h:94,<br>
                       from /tmp/BUILD/libcxx/include/cstdlib:86,<br>
                       from /tmp/BUILD/libcxx/include/exception:82,<br>
                       from /tmp/BUILD/libcxx/include/new:85,<br>
                       from
      /tmp/BUILD/libcxxabi/src/cxa_aux_runtime.cpp:14:<br>
      /opt/gcc/include/c++/8/stdlib.h:38:12: error: 'std::abort' has not
      been declared<br>
       using std::abort;<br>
                  ^~~~~<br>
      /opt/gcc/include/c++/8/stdlib.h:39:12: error: 'std::atexit' has
      not been declared<br>
       using std::atexit;<br>
                  ^~~~~~<br>
      /opt/gcc/include/c++/8/stdlib.h:40:12: error: 'std::exit' has not
      been declared<br>
    </p>
    <p>____________________________________________________________________________</p>
    <p><br>
    </p>
    <p>Thanksfor your help,</p>
    <p>Best regards<br>
    </p>
    <p><br>
    </p>
    <p> </p>
    <p>#############</p>
    <p># TOYS CODE  #<br>
    </p>
    <p>#############</p>
    <p>it_works.cpp</p>
    <p>===========</p>
    <p>#include <iostream><br>
      using namespace std;<br>
      int main(void) {<br>
        cout << "It works for C++!" << endl;<br>
        return 0;<br>
      }<br>
      <br>
    </p>
    <p><br>
    </p>
    <p>test_div.cpp </p>
    <p>===========<br>
      #include <iostream><br>
      #include <cstdlib><br>
      using namespace std;<br>
      int main()<br>
      {<br>
        div_t result1 = div(51, 6);<br>
        cout << "Quotient of 51/6 = " << result1.quot
      << endl;<br>
        cout << "Remainder of 51/6 = " << result1.rem
      << endl;<br>
        ldiv_t result2 = div(19237012L,251L);<br>
        cout << "Quotient of 19237012L/251L = " <<
      result2.quot << endl;<br>
        cout << "Remainder of 19237012L/251L = " <<
      result2.rem << endl;<br>
        return 0;<br>
      }<br>
      <br>
    </p>
    <p><br>
    </p>
    <p><br>
    </p>
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              src="cid:part2.0519B5C9.4C10181B@cng.fr" alt="Centre
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                href="mailto:jonathan.mercier@cng.fr">jonathan.mercier@cng.fr</a>
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