<div dir="ltr"><div>Hi Paul:</div><div><br></div>Why are you explicitly including .../c++/4.2.1? <div><br></div><div>If clang was compiled correctly, it should be able to find it's own c++ headers -- on OSX, that's most likely libc++ headers. Try running:</div><div><br></div><div><pre style="margin-top:0px;margin-bottom:1em;padding:5px;border:0px;font-size:13px;width:auto;max-height:600px;overflow:auto;font-family:consolas,menlo,monaco,"lucida console","liberation mono","dejavu sans mono","bitstream vera sans mono","courier new",monospace,sans-serif;background-color:rgb(239,240,241);word-wrap:normal;color:rgb(36,39,41)"><code style="margin:0px;padding:0px;border:0px;font-family:consolas,menlo,monaco,"lucida console","liberation mono","dejavu sans mono","bitstream vera sans mono","courier new",monospace,sans-serif;white-space:inherit">clang++ -v -c -x c++ - < /dev/null</code></pre></div><div class="gmail_extra"><div class="gmail_quote">hth...</div><div class="gmail_quote">don</div><div class="gmail_quote"><br></div><div class="gmail_quote">On Fri, Dec 23, 2016 at 10:12 AM, icloud via cfe-dev <span dir="ltr"><<a href="mailto:cfe-dev@lists.llvm.org" target="_blank">cfe-dev@lists.llvm.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<p>
</p>
<div class="m_-1924487469993077611moz-text-flowed" style="font-family:-moz-fixed;font-size:12px" lang="x-unicode">I am writing a parser for c++.
<br>
<br>
I am developing on a Mac. OS X Sierra 10.12.1
<br>
<br>
I am frustrated by the fact that I cannot compile even the
simplest c++ code because clang 3.9 finds errors in the clang
headers themselves! for example:
<br>
<br>
#include "clang/AST/ASTContext.h"
<br>
#include "clang/AST/ASTConsumer.h"
<br>
#include "clang/AST/<wbr>RecursiveASTVisitor.h"
<br>
#include "clang/Frontend/ASTConsumers.<wbr>h"
<br>
#include "clang/Frontend/<wbr>FrontendActions.h"
<br>
#include "clang/Frontend/<wbr>CompilerInstance.h"
<br>
#include "clang/Tooling/<wbr>CommonOptionsParser.h"
<br>
#include "clang/Tooling/Tooling.h"
<br>
#include "clang/Rewrite/Core/Rewriter.<wbr>h"
<br>
#include "llvm/Support/raw_ostream.h"
<br>
#include <string>
<br>
#include <memory>
<br>
<br>
<br>
int main( void )
<br>
{
<br>
return 0;
<br>
}
<br>
<br>
<br>
---
<br>
<br>
My output from running make is:
<br>
<br>
"/Applications/Xcode.app/<wbr>Contents/Developer/usr/bin/<wbr>make" -f
nbproject/Makefile-Debug.mk QMAKE= SUBPROJECTS= .build-conf
<br>
"/Applications/Xcode.app/<wbr>Contents/Developer/usr/bin/<wbr>make" -f
nbproject/Makefile-Debug.mk dist/Debug/CLang-MacOSX/parser
<br>
mkdir -p build/Debug/CLang-MacOSX
<br>
rm -f "build/Debug/CLang-MacOSX/<wbr>main.o.d"
<br>
clang++ -c -g -I/usr/local/include -I/usr/include/c++/4.2.1
-I/usr/include/c++/4.2.1 -std=c++14 -MMD -MP -MF
"build/Debug/CLang-MacOSX/<wbr>main.o.d" -o
build/Debug/CLang-MacOSX/main.<wbr>o main.cpp
<br>
In file included from main.cpp:2:
<br>
In file included from /usr/local/include/clang/AST/<wbr>AST.h:18:
<br>
In file included from
/usr/local/include/clang/AST/<wbr>ASTContext.h:18:
<br>
In file included from
/usr/local/include/clang/AST/<wbr>ASTTypeTraits.h:20:
<br>
In file included from /usr/local/include/clang/AST/<wbr>Decl.h:17:
<br>
In file included from /usr/local/include/clang/AST/<wbr>APValue.h:17:
<br>
In file included from /usr/local/include/clang/<wbr>Basic/LLVM.h:22:
<br>
In file included from
/usr/local/include/llvm/<wbr>Support/Casting.h:19:
<br>
In file included from
/usr/local/include/llvm/<wbr>Support/type_traits.h:18:
<br>
In file included from /usr/include/c++/4.2.1/<wbr>utility:67:
<br>
/usr/include/c++/4.2.1/bits/<wbr>stl_pair.h:96:22: error: unknown type
name 'pair'
<br>
operator==(const pair<_T1, _T2>& __x, const
pair<_T1, _T2>& __y)
<br>
^
<br>
/usr/include/c++/4.2.1/bits/<wbr>stl_pair.h:96:26: error: expected ')'
<br>
operator==(const pair<_T1, _T2>& __x, const
pair<_T1, _T2>& __y)
<br>
^
<br>
/usr/include/c++/4.2.1/bits/<wbr>stl_pair.h:96:15: note: to match this
'('
<br>
operator==(const pair<_T1, _T2>& __x, const
pair<_T1, _T2>& __y)
<br>
^
<br>
/usr/include/c++/4.2.1/bits/<wbr>stl_pair.h:97:14: error: use of
undeclared identifier '__x'
<br>
{ return __x.first == __y.first && __x.second ==
__y.second; }
<br>
^
<br>
/usr/include/c++/4.2.1/bits/<wbr>stl_pair.h:97:27: error: use of
undeclared identifier '__y'
<br>
{ return __x.first == __y.first && __x.second ==
__y.second; }
<br>
^
<br>
/usr/include/c++/4.2.1/bits/<wbr>stl_pair.h:97:40: error: use of
undeclared identifier '__x'
<br>
{ return __x.first == __y.first && __x.second ==
__y.second; }
<br>
<wbr> ^
<br>
/usr/include/c++/4.2.1/bits/<wbr>stl_pair.h:97:54: error: use of
undeclared identifier '__y'
<br>
{ return __x.first == __y.first && __x.second ==
__y.second; }
<br>
<wbr> ^
<br>
/usr/include/c++/4.2.1/bits/<wbr>stl_pair.h:102:21: error: unknown type
name 'pair'
<br>
operator<(const pair<_T1, _T2>& __x, const
pair<_T1, _T2>& __y)
<br>
^
<br>
/usr/include/c++/4.2.1/bits/<wbr>stl_pair.h:102:25: error: expected ')'
<br>
operator<(const pair<_T1, _T2>& __x, const
pair<_T1, _T2>& __y)
<br>
^
<br>
/usr/include/c++/4.2.1/bits/<wbr>stl_pair.h:102:14: note: to match this
'('
<br>
operator<(const pair<_T1, _T2>& __x, const
pair<_T1, _T2>& __y)
<br>
^
<br>
/usr/include/c++/4.2.1/bits/<wbr>stl_pair.h:103:26: error: use of
undeclared identifier '__y'; did you mean '__1'?
<br>
{ return __x.first < __y.first
<br>
^
<br>
<i class="m_-1924487469993077611moz-txt-slash"><span class="m_-1924487469993077611moz-txt-tag">/</span>usr/local/bin<span class="m_-1924487469993077611moz-txt-tag">/</span></i>../include/c++/<wbr>v1/type_traits:393:1:
note: '__1' declared here
<br>
_LIBCPP_BEGIN_NAMESPACE_STD
<br>
^
<br>
<i class="m_-1924487469993077611moz-txt-slash"><span class="m_-1924487469993077611moz-txt-tag">/</span>usr/local/bin<span class="m_-1924487469993077611moz-txt-tag">/</span></i>../include/c++/<wbr>v1/__config:353:69:
note: expanded from macro '_LIBCPP_BEGIN_NAMESPACE_STD'
<br>
#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std {inline
namespace _LIBCPP_NAMESPACE {
<br>
<wbr> <wbr> ^
<br>
<i class="m_-1924487469993077611moz-txt-slash"><span class="m_-1924487469993077611moz-txt-tag">/</span>usr/local/bin<span class="m_-1924487469993077611moz-txt-tag">/</span></i>../include/c++/<wbr>v1/__config:67:27:
note: expanded from macro '_LIBCPP_NAMESPACE'
<br>
#define _LIBCPP_NAMESPACE _LIBCPP_CONCAT(__,_LIBCPP_ABI_<wbr>VERSION)
<br>
^
<br>
... and so on ... until:
<br>
<br>
fatal error: too many errors emitted, stopping now
[-ferror-limit=]
<br>
20 errors generated.
<br>
make[2]: *** [build/Debug/CLang-MacOSX/<wbr>main.o] Error 1
<br>
make[1]: *** [.build-conf] Error 2
<br>
make: *** [.build-impl] Error 2
<br>
<br>
If I were to take a completely wild stab in the dark I would say
clang thinks I'm compiling C code, not C++.
<br>
<br>
maybe some missing extern "C"{ statements?
<br>
<br>
Help will be greatly appreciated.
<br><span class="HOEnZb"><font color="#888888">
<br>
<div class="m_-1924487469993077611moz-txt-sig"><span class="m_-1924487469993077611moz-txt-tag">-- <br>
</span>
<br>
Paul
<br>
<br>
</div>
</font></span></div><span class="HOEnZb"><font color="#888888">
<br>
<pre class="m_-1924487469993077611moz-signature" cols="72">--
Paul</pre>
</font></span></div>
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<br></blockquote></div><br></div></div>