Your message dated Sun, 4 Dec 2016 20:16:27 +0100 with message-id <[email protected]> and subject line Re: Bug#839615: libelfin: Library do not work with clang has caused the Debian Bug report #839615, regarding libelfin: Library do not work with clang to be marked as done.
This means that you claim that the problem has been dealt with. If this is not the case it is now your responsibility to reopen the Bug report if necessary, and/or fix the problem forthwith. (NB: If you are a system administrator and have no idea what this message is talking about, this may indicate a serious mail system misconfiguration somewhere. Please contact [email protected] immediately.) -- 839615: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=839615 Debian Bug Tracking System Contact [email protected] with problems
--- Begin Message ---Package: src:libelfin Version: 0.1+20160825.git.6eb10ca-1 Severity: important When building the libelfin shared libraries with GCC 6 in unstable, the resulting shared library do not work for programs compiled with clang++. The following test code demonstrate the problem: CXXFLAGS="-std=c++11" PKGFLAGS="libdwarf++" buildtest() { CC="$1" CXX="$2" cat > x.cpp <<EOF #include <dwarf/dwarf++.hh> dwarf::value v; std::string s = v.as_string(); int main(int argc, char *argv[]) { return 0; } EOF if "$CXX" $CXXFLAGS $(pkg-config --cflags "$PKGFLAGS") -c x.cpp && [ -e x.o ] ; then echo "success: Compilation with $CC and $CXX produced x.o" else echo "error: Compilation with $CC and $CXX did not procduce x.o" fi if "$CXX" -o x x.o $(pkg-config --libs "$PKGFLAGS") && [ -e x ] ; then echo "success: Linking with $CXX produced x" else echo "error: Linking with $CXX did not produce x" fi } buildtest clang clang++ The error from clang look like this: x.o: In function `__cxx_global_var_init1': x.cpp:(.text.startup+0x3d): undefined reference to `dwarf::value::as_string() const' clang: error: linker command failed with exit code 1 (use -v to see invocation) The problem is that the shared library uses an API tag for the symbol in question: % nm /usr/lib/x86_64-linux-gnu/libdwarf++.a |grep as_string|c++filt |grep T 0000000000002500 T dwarf::value::as_string[abi:cxx11]() const 00000000000024a0 T dwarf::value::as_string(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&) const % I have no idea how to avoid this problem. -- Happy hacking Petter Reinholdtsen
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--- Begin Message ---Version: 0.1+20160825.git.6eb10ca-6 This problem was fixed in clang and the test started working with libelfin version 0.1+20160825.git.6eb10ca-6. Closing. -- Happy hacking Petter Reinholdtsen
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