[cfe-dev] Compiling llvm/clang/compiler-rt 3.2

Tue May 7 16:19:47 PDT 2013

It does indeed look to be a problem with these variables being defined but
with no value. The issue also effects the SVN_REVISION, LLVM_REVISION and
LLVM_REPOSITORY variables.

I don't have these explicitly set so I'm guessing the build procedure sets
them. For now I've worked around by using an empty string instead.

On 8 May 2013 02:40, Richard Smith <richard at metafoo.co.uk> wrote:

> On Tue, May 7, 2013 at 9:08 AM, Jordan Rose <jordan_rose at apple.com> wrote:
>
>> Looks like a vexing parse<http://en.wikipedia.org/wiki/Most_vexing_parse> problem.
>> Try changing 'StringRef URL(SVN_REPOSITORY)' to 'StringRef URL
>> = SVN_REPOSITORY'.
>>
>
> That will just break in a different way. The problem seems to be that
> SVN_REPOSITORY is defined but expands to no tokens.
>
>
>> If that works, please let us know so we can fix it for 3.3!
>>
>> Jordan
>>
>>
>> On May 6, 2013, at 18:48 , Graeme Russell <grussell86 at gmail.com> wrote:
>>
>> Hi cfe-dev,
>>
>> I'm currently trying to compile llvm, clang and compiler-rt from the
>> official 3.2 tag with gcc4.7.0 but unfortunately I'm getting the compiler
>> error detailed below. Is this something anyone has come across before?
>>
>> Thanks,
>> Graeme
>>
>> *Compiler Errror*
>> make[4]: Entering directory `/home/grarus/build/tools/clang/lib/Basic'
>> llvm[4]: Compiling Builtins.cpp for Release+Asserts build
>> llvm[4]: Compiling ConvertUTF.c for Release+Asserts build
>> llvm[4]: Compiling ConvertUTFWrapper.cpp for Release+Asserts build
>> llvm[4]: Compiling Diagnostic.cpp for Release+Asserts build
>> llvm[4]: Compiling DiagnosticIDs.cpp for Release+Asserts build
>> llvm[4]: Compiling FileManager.cpp for Release+Asserts build
>> llvm[4]: Compiling FileSystemStatCache.cpp for Release+Asserts build
>> llvm[4]: Compiling IdentifierTable.cpp for Release+Asserts build
>> llvm[4]: Compiling LangOptions.cpp for Release+Asserts build
>> llvm[4]: Compiling Module.cpp for Release+Asserts build
>> llvm[4]: Compiling ObjCRuntime.cpp for Release+Asserts build
>> llvm[4]: Compiling SourceLocation.cpp for Release+Asserts build
>> llvm[4]: Compiling SourceManager.cpp for Release+Asserts build
>> llvm[4]: Compiling TargetInfo.cpp for Release+Asserts build
>> llvm[4]: Compiling Targets.cpp for Release+Asserts build
>> llvm[4]: Compiling TokenKinds.cpp for Release+Asserts build
>> llvm[4]: Compiling Version.cpp for Release+Asserts build
>> /home/grarus/llvm/tools/clang/lib/Basic/Version.cpp: In function
>> ‘std::string clang::getClangRepositoryPath()’:
>> /home/grarus/llvm/tools/clang/lib/Basic/Version.cpp:36:11: error: request
>> for member ‘empty’ in ‘clang::URL’, which is of non-class type
>> ‘llvm::StringRef()’
>> /home/grarus/llvm/tools/clang/lib/Basic/Version.cpp:38:63: error:
>> assignment of function ‘llvm::StringRef clang::URL()’
>> /home/grarus/llvm/tools/clang/lib/Basic/Version.cpp:38:63: error: cannot
>> convert ‘llvm::StringRef’ to ‘llvm::StringRef()’ in assignment
>> /home/grarus/llvm/tools/clang/lib/Basic/Version.cpp:42:13: error: request
>> for member ‘slice’ in ‘clang::URL’, which is of non-class type
>> ‘llvm::StringRef()’
>> /home/grarus/llvm/tools/clang/lib/Basic/Version.cpp:42:26: error: request
>> for member ‘find’ in ‘clang::URL’, which is of non-class type
>> ‘llvm::StringRef()’
>> /home/grarus/llvm/tools/clang/lib/Basic/Version.cpp:45:22: error: request
>> for member ‘find’ in ‘clang::URL’, which is of non-class type
>> ‘llvm::StringRef()’
>> /home/grarus/llvm/tools/clang/lib/Basic/Version.cpp:47:15: error: request
>> for member ‘substr’ in ‘clang::URL’, which is of non-class type
>> ‘llvm::StringRef()’
>> /home/grarus/llvm/tools/clang/lib/Basic/Version.cpp:49:10: error: could
>> not convert ‘clang::URL’ from ‘llvm::StringRef (*)()’ to ‘std::string {aka
>> std::basic_string<char>}’
>> /home/grarus/llvm/tools/clang/lib/Basic/Version.cpp: In function
>> ‘std::string clang::getLLVMRepositoryPath()’:
>> /home/grarus/llvm/tools/clang/lib/Basic/Version.cpp:63:22: error: request
>> for member ‘find’ in ‘clang::URL’, which is of non-class type
>> ‘llvm::StringRef()’
>> /home/grarus/llvm/tools/clang/lib/Basic/Version.cpp:65:15: error: request
>> for member ‘substr’ in ‘clang::URL’, which is of non-class type
>> ‘llvm::StringRef()’
>> /home/grarus/llvm/tools/clang/lib/Basic/Version.cpp:67:10: error: could
>> not convert ‘clang::URL’ from ‘llvm::StringRef (*)()’ to ‘std::string {aka
>> std::basic_string<char>}’
>> /home/grarus/llvm/tools/clang/lib/Basic/Version.cpp: In function
>> ‘std::string clang::getClangRevision()’:
>> /home/grarus/llvm/tools/clang/lib/Basic/Version.cpp:72:3: error:
>> return-statement with no value, in function returning ‘std::string {aka
>> std::basic_string<char>}’ [-fpermissive]
>> /home/grarus/llvm/tools/clang/lib/Basic/Version.cpp:76:1: warning: no
>> return statement in function returning non-void [-Wreturn-type]
>> /home/grarus/llvm/tools/clang/lib/Basic/Version.cpp: In function
>> ‘std::string clang::getLLVMRevision()’:
>> /home/grarus/llvm/tools/clang/lib/Basic/Version.cpp:80:3: error:
>> return-statement with no value, in function returning ‘std::string {aka
>> std::basic_string<char>}’ [-fpermissive]
>> /home/grarus/llvm/tools/clang/lib/Basic/Version.cpp:84:1: warning: no
>> return statement in function returning non-void [-Wreturn-type]
>> /home/grarus/llvm/tools/clang/lib/Basic/Version.cpp: In function
>> ‘std::string clang::getLLVMRepositoryPath()’:
>> /home/grarus/llvm/tools/clang/lib/Basic/Version.cpp:68:1: warning:
>> control reaches end of non-void function [-Wreturn-type]
>> /home/grarus/llvm/tools/clang/lib/Basic/Version.cpp: In function
>> ‘std::string clang::getClangRepositoryPath()’:
>> /home/grarus/llvm/tools/clang/lib/Basic/Version.cpp:51:1: warning:
>> control reaches end of non-void function [-Wreturn-type]
>> /bin/rm: cannot remove
>> `/home/grarus/build/tools/clang/lib/Basic/Release+Asserts/Version.d.tmp':
>> No such file or directory
>> make[4]: ***
>> [/home/grarus/build/tools/clang/lib/Basic/Release+Asserts/Version.o] Error 1
>>
>>
>> *Code Snippet from Version.cpp*
>> #include "clang/Basic/Version.h"
>> #include "clang/Basic/LLVM.h"
>> #include "llvm/Support/raw_ostream.h"
>> #include "llvm/Config/config.h"
>> #include <cstring>
>> #include <cstdlib>
>>
>> namespace clang {
>>
>> std::string getClangRepositoryPath() {
>> #if defined(CLANG_REPOSITORY_STRING)
>>   return CLANG_REPOSITORY_STRING;
>> #else
>> #ifdef SVN_REPOSITORY
>>   StringRef URL(SVN_REPOSITORY);
>> #else
>>   StringRef URL("");
>> #endif
>>
>>   // If the SVN_REPOSITORY is empty, try to use the SVN keyword. This
>> helps us
>>   // pick up a tag in an SVN export, for example.
>>   static StringRef SVNRepository("$URL:
>> http://llvm.org/svn/llvm-project/cfe/tags/RELEASE_32/final/lib/Basic/Version.cpp
>>  $");
>>   if (URL.empty()) {
>>     URL = SVNRepository.slice(SVNRepository.find(':'),
>>                               SVNRepository.find("/lib/Basic"));
>>   }
>>
>>   // Strip off version from a build from an integration branch.
>>   URL = URL.slice(0, URL.find("/src/tools/clang"));
>>
>>   // Trim path prefix off, assuming path came from standard cfe path.
>>   size_t Start = URL.find("cfe/");
>>   if (Start != StringRef::npos)
>>     URL = URL.substr(Start + 4);
>>
>>   return URL;
>> #endif
>> }
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>>
>>
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>
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