This bug was fixed in the package llvm-toolchain-3.4 -
1:3.4.2-13ubuntu2.1
---------------
llvm-toolchain-3.4 (1:3.4.2-13ubuntu2.1) wily; urgency=medium
* d/rules: fix gcc-5 detection, since gcc-5.2 doesn't provide a g++-5.2
binary (but it is called g++-5). Patch cherry-picked from Debian
(Gianfranco Costamagna). LP: #1501300
-- Iain Lane <[email protected]> Mon, 07 Dec 2015 13:10:08
+0000
** Changed in: llvm-toolchain-3.4 (Ubuntu Wily)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1501300
Title:
[SRU] Wily (15.10) this package got not compiled with __cxx11 support
Status in llvm-toolchain-3.4 package in Ubuntu:
Invalid
Status in llvm-toolchain-3.4 source package in Wily:
Fix Released
Bug description:
[Impact]
* with gcc-5 default, and llvm-3.4 built with the gcc-4.9, people
can't link programs using cxx11 support
[Test Case]
* compile a program using cxx11 e.g. using boost libraries
[Regression Potential]
* llvm-3.4 is a compiler, and the change should affect only cxx11
support (since the library is ABI compatible).
So, fixing cxx11 support shouln't have any regression, only the
feature will start working, while it wasn't before
[Other Info]
* Doko ack'd the SRU, and it should be the best voice here, for sure better
than mine :)
This packages does not contain any __cxx11 symbols when installed. This
causes the problem that user-space applications cannot link successfully to it.
Recompile the (untouched) dpkg source package on the same machine and
installing it solved the problem.
There seems something in the package generation broken.
Steps to reproduce try to compile the attached minimal example
https://github.com/goldhoorn/clang-sandbox
Errors:
CMakeFiles/main.dir/main.cpp.o: In function `foo()':
/tmp/clang-sandbox/main.cpp:25: undefined reference to
`clang::NamedDecl::getQualifiedNameAsString[abi:cxx11]() const'
CMakeFiles/main.dir/main.cpp.o: In function
`clang::QualType::getAsString[abi:cxx11](clang::SplitQualType)':
/usr/lib/llvm-3.4/include/clang/AST/Type.h:868: undefined reference to
`clang::QualType::getAsString[abi:cxx11](clang::Type const*, clang::Qualifiers)'
CMakeFiles/main.dir/main.cpp.o: In function
`clang::ast_matchers::internal::matcher_matchesName0Matcher::matches(clang::NamedDecl
const&, clang::ast_matchers::internal::ASTMatchFinder*,
clang::ast_matchers::internal::BoundNodesTreeBuilder*) const':
/usr/lib/llvm-3.4/include/clang/ASTMatchers/ASTMatchers.h:1439: undefined
reference to `clang::NamedDecl::getQualifiedNameAsString[abi:cxx11]() const'
CMakeFiles/main.dir/main.cpp.o: In function
`clang::ast_matchers::internal::matcher_hasName0Matcher::matches(clang::NamedDecl
const&, clang::ast_matchers::internal::ASTMatchFinder*,
clang::ast_matchers::internal::BoundNodesTreeBuilder*) const':
/usr/lib/llvm-3.4/include/clang/ASTMatchers/ASTMatchers.h:1411: undefined
reference to `clang::NamedDecl::getQualifiedNameAsString[abi:cxx11]() const'
/usr/lib/llvm-3.4/lib/libclangAST.a(ExprConstant.o): In function
`handleIntIntBinOp((anonymous namespace)::EvalInfo&, clang::Expr const*,
llvm::APSInt const&, clang::BinaryOperatorKind, llvm::APSInt, llvm::APSInt&)':
(.text+0x6a35): undefined reference to `llvm::APInt::toString(unsigned int,
bool) const'
/usr/lib/llvm-3.4/lib/libclangAST.a(StmtPrinter.o): In function `(anonymous
namespace)::StmtPrinter::VisitIntegerLiteral(clang::IntegerLiteral*) [clone
.isra.302]':
...
This example is workign on privious ubuntus and debians
Sysinfo:
Description: Ubuntu Wily Werewolf (development branch)
Release: 15.10
In a VirtualBox
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