Troubles building clang

Clang Frontend
1

Hi all,

I'm trying to build clang from the tip of the repo, and am getting the compilation failures denoted below.

LLVM/Clang is at r224688

--- snip ---
/home/zanboor/workspace/llvm/llvm/tools/clang/tools/extra/clang-apply-replacements/lib/Tooling/ApplyReplacements.cpp:49:37: error: no matching constructor for initialization of 'llvm::sys::fs::recursive_directory_iterator'
   for (recursive_directory_iterator I(Directory, ErrorCode), E;
                                     ^ ~~~~~~~~~~~~~~~~~~~~
/home/zanboor/workspace/llvm/llvm/include/llvm/Support/FileSystem.h:797:12: note: candidate constructor not viable: no known conversion from 'llvm::error_code' to 'std::error_code &' for 2nd argument
   explicit recursive_directory_iterator(const Twine &path, std::error_code &ec)
            ^
/home/zanboor/workspace/llvm/llvm/include/llvm/Support/FileSystem.h:796:3: note: candidate constructor not viable: requires 0 arguments, but 2 were provided
   recursive_directory_iterator() {}
   ^
/home/zanboor/workspace/llvm/llvm/include/llvm/Support/FileSystem.h:792:7: note: candidate constructor (the implicit move constructor) not viable: requires 1 argument, but 2 were provided
class recursive_directory_iterator {
       ^
/home/zanboor/workspace/llvm/llvm/include/llvm/Support/FileSystem.h:792:7: note: candidate constructor (the implicit copy constructor) not viable: requires 1 argument, but 2 were provided
/home/zanboor/workspace/llvm/llvm/tools/clang/tools/extra/clang-apply-replacements/lib/Tooling/ApplyReplacements.cpp:250:26: error: no matching constructor for initialization of 'llvm::raw_fd_ostream'
     llvm::raw_fd_ostream FileStream(FileName, ErrorInfo, llvm::sys::fs::F_Text);
                          ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/zanboor/workspace/llvm/llvm/include/llvm/Support/raw_ostream.h:363:3: note: candidate constructor not viable: no known conversion from 'std::string' (aka 'basic_string<char>') to 'std::error_code &' for 2nd argument
   raw_fd_ostream(StringRef Filename, std::error_code &EC,
   ^
/home/zanboor/workspace/llvm/llvm/include/llvm/Support/raw_ostream.h:368:3: note: candidate constructor not viable: no known conversion from 'const char *' to 'int' for 1st argument; dereference the argument with *
   raw_fd_ostream(int fd, bool shouldClose, bool unbuffered=false);
   ^
/home/zanboor/workspace/llvm/llvm/include/llvm/Support/raw_ostream.h:324:7: note: candidate constructor (the implicit copy constructor) not viable: requires 1 argument, but 3 were provided
class raw_fd_ostream : public raw_ostream {
       ^
/home/zanboor/workspace/llvm/llvm/tools/clang/tools/extra/clang-apply-replacements/lib/Tooling/ApplyReplacements.cpp:266:16: error: no viable conversion from 'std::error_code' to 'llvm::error_code'
     error_code Error = llvm::sys::fs::remove(*I);
                ^ ~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/include/llvm/Support/system_error.h:724:7: note: candidate constructor (the implicit copy constructor) not viable: no known conversion from 'std::error_code' to 'const llvm::error_code &' for 1st argument
class error_code {
       ^
/usr/local/include/llvm/Support/system_error.h:724:7: note: candidate constructor (the implicit move constructor) not viable: no known conversion from 'std::error_code' to 'llvm::error_code &&' for 1st argument
class error_code {
       ^
/usr/local/include/llvm/Support/system_error.h:739:22: note: candidate template ignored: disabled by 'enable_if' [with E = std::error_code]
                      is_error_code_enum<E>::value
                      ^
--- snip ---

Note: was able to build tip circa last Wednesday.

2

Hi all,

I'm trying to build clang from the tip of the repo, and am getting the
compilation failures denoted below.

Just in case you've not figured out the problem by now...

LLVM/Clang is at r224688

--- snip ---
/home/zanboor/workspace/llvm/llvm/tools/clang/tools/extra/
clang-apply-replacements/lib/Tooling/ApplyReplacements.cpp:49:37: error:
no matching constructor for initialization of 'llvm::sys::fs::recursive_
directory_iterator'
  for (recursive_directory_iterator I(Directory, ErrorCode), E;
                                    ^ ~~~~~~~~~~~~~~~~~~~~
/home/zanboor/workspace/llvm/llvm/include/llvm/Support/FileSystem.h:797:12:
note: candidate constructor not viable: no known conversion from
'llvm::error_code' to 'std::error_code &' for 2nd argument
  explicit recursive_directory_iterator(const Twine &path,
std::error_code &ec)
           ^
/home/zanboor/workspace/llvm/llvm/include/llvm/Support/FileSystem.h:796:3:
note: candidate constructor not viable: requires 0 arguments, but 2 were
provided
  recursive_directory_iterator() {}
  ^
/home/zanboor/workspace/llvm/llvm/include/llvm/Support/FileSystem.h:792:7:
note: candidate constructor (the implicit move constructor) not viable:
requires 1 argument, but 2 were provided
class recursive_directory_iterator {
      ^
/home/zanboor/workspace/llvm/llvm/include/llvm/Support/FileSystem.h:792:7:
note: candidate constructor (the implicit copy constructor) not viable:
requires 1 argument, but 2 were provided
/home/zanboor/workspace/llvm/llvm/tools/clang/tools/extra/
clang-apply-replacements/lib/Tooling/ApplyReplacements.cpp:250:26: error:
no matching constructor for initialization of 'llvm::raw_fd_ostream'
    llvm::raw_fd_ostream FileStream(FileName, ErrorInfo,
llvm::sys::fs::F_Text);
                         ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~
/home/zanboor/workspace/llvm/llvm/include/llvm/Support/raw_ostream.h:363:3:
note: candidate constructor not viable: no known conversion from
'std::string' (aka 'basic_string<char>') to 'std::error_code &' for 2nd
argument
  raw_fd_ostream(StringRef Filename, std::error_code &EC,
  ^
/home/zanboor/workspace/llvm/llvm/include/llvm/Support/raw_ostream.h:368:3:
note: candidate constructor not viable: no known conversion from 'const
char *' to 'int' for 1st argument; dereference the argument with *
  raw_fd_ostream(int fd, bool shouldClose, bool unbuffered=false);
  ^
/home/zanboor/workspace/llvm/llvm/include/llvm/Support/raw_ostream.h:324:7:
note: candidate constructor (the implicit copy constructor) not viable:
requires 1 argument, but 3 were provided
class raw_fd_ostream : public raw_ostream {
      ^

Your build setup is finding one copy of the LLVM headers
in /home/zanboor/workspace/llvm/llvm/include/llvm ...

/home/zanboor/workspace/llvm/llvm/tools/clang/tools/extra/
clang-apply-replacements/lib/Tooling/ApplyReplacements.cpp:266:16: error:
no viable conversion from 'std::error_code' to 'llvm::error_code'
    error_code Error = llvm::sys::fs::remove(*I);
               ^ ~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/include/llvm/Support/system_error.h:724:7: note: candidate
constructor (the implicit copy constructor) not viable: no known conversion
from 'std::error_code' to 'const llvm::error_code &' for 1st argument
class error_code {
      ^

... and another copy in /usr/local/include/llvm.

This is resulting in mismatched versions of LLVM headers being used in the
same compile, which is almost certainly why your build is failing.