Martin J. O'Riordan via llvm-dev
2016-Jun-30 08:16 UTC
[llvm-dev] Building LLVM under Cygwin32 fails
I am updating our out-of-tree copy of LLVM to track the head (revision
#272991 specifically).
I have it building successfully with VC++ 2013 and CMake v3.5.2 on Windows,
and with GCC v4.8.5 and CMake v3.5.2 on CentOS; but when I try building on
Windows using Cygwin32 I get the following build failures:
[ 4%] Building CXX object
lib/Support/CMakeFiles/LLVMSupport.dir/Signals.cpp.o
In file included from
/src/Compilers/llvmHead/llvm/lib/Support/Signals.cpp:180:0:
/src/Compilers/llvmHead/llvm/lib/Support/Unix/Signals.inc: In function 'void
llvm::sys::PrintStackTrace(llvm::raw_ostream&)':
/src/Compilers/llvmHead/llvm/lib/Support/Unix/Signals.inc:418:5: error:
'Dl_info' was not declared in this scope
Dl_info dlinfo;
^
/src/Compilers/llvmHead/llvm/lib/Support/Unix/Signals.inc:419:28: error:
'dlinfo' was not declared in this scope
dladdr(StackTrace[i], &dlinfo);
^
/src/Compilers/llvmHead/llvm/lib/Support/Unix/Signals.inc:419:34: error:
'dladdr' was not declared in this scope
dladdr(StackTrace[i], &dlinfo);
^
/src/Compilers/llvmHead/llvm/lib/Support/Unix/Signals.inc:430:5: error:
'Dl_info' was not declared in this scope
Dl_info dlinfo;
^
/src/Compilers/llvmHead/llvm/lib/Support/Unix/Signals.inc:431:28: error:
'dlinfo' was not declared in this scope
dladdr(StackTrace[i], &dlinfo);
^
/src/Compilers/llvmHead/llvm/lib/Support/Unix/Signals.inc:431:34: error:
'dladdr' was not declared in this scope
dladdr(StackTrace[i], &dlinfo);
^
make[4]: *** [lib/Support/CMakeFiles/LLVMSupport.dir/build.make:2223:
lib/Support/CMakeFiles/LLVMSupport.dir/Signals.cpp.o] Error 1
I am using CMake v3.5.2 built from source on Cygwin32 because v3.5.2 is not
yet available from for download, and GCC v5.4.0. Other than CMake, all of
my Cygwin32 installation is from the distribution.
Is there a quick-fix known for this, or has it been fixed in a later
revision, or is this a new problem?
Thanks,
MartinO
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Bruce Hoult via llvm-dev
2016-Jun-30 12:55 UTC
[llvm-dev] Building LLVM under Cygwin32 fails
Googling indicates that cygwin doesn't have that functionality. Or, at least, didn't in 2010, when someone asked about the same problem: https://cygwin.com/ml/cygwin/2010-01/msg00596.html "cygwin has only dlsym() not the SGI DL_info + dladdr() yet. clang just needs it to get the path for the CIndex dll. This should be possible with the code in the LLVM_ON_WIN32 section, and convert then the path from win to posix with cygwin_conv_path()." On Thu, Jun 30, 2016 at 11:16 AM, Martin J. O'Riordan via llvm-dev < llvm-dev at lists.llvm.org> wrote:> I am updating our out-of-tree copy of LLVM to track the head (revision > #272991 specifically). > > > > I have it building successfully with VC++ 2013 and CMake v3.5.2 on > Windows, and with GCC v4.8.5 and CMake v3.5.2 on CentOS; but when I try > building on Windows using Cygwin32 I get the following build failures: > > > > [ 4%] Building CXX object > lib/Support/CMakeFiles/LLVMSupport.dir/Signals.cpp.o > > In file included from > /src/Compilers/llvmHead/llvm/lib/Support/Signals.cpp:180:0: > > /src/Compilers/llvmHead/llvm/lib/Support/Unix/Signals.inc: In function > ‘void llvm::sys::PrintStackTrace(llvm::raw_ostream&)’: > > /src/Compilers/llvmHead/llvm/lib/Support/Unix/Signals.inc:418:5: error: > ‘Dl_info’ was not declared in this scope > > Dl_info dlinfo; > > ^ > > /src/Compilers/llvmHead/llvm/lib/Support/Unix/Signals.inc:419:28: error: > ‘dlinfo’ was not declared in this scope > > dladdr(StackTrace[i], &dlinfo); > > ^ > > /src/Compilers/llvmHead/llvm/lib/Support/Unix/Signals.inc:419:34: error: > ‘dladdr’ was not declared in this scope > > dladdr(StackTrace[i], &dlinfo); > > ^ > > /src/Compilers/llvmHead/llvm/lib/Support/Unix/Signals.inc:430:5: error: > ‘Dl_info’ was not declared in this scope > > Dl_info dlinfo; > > ^ > > /src/Compilers/llvmHead/llvm/lib/Support/Unix/Signals.inc:431:28: error: > ‘dlinfo’ was not declared in this scope > > dladdr(StackTrace[i], &dlinfo); > > ^ > > /src/Compilers/llvmHead/llvm/lib/Support/Unix/Signals.inc:431:34: error: > ‘dladdr’ was not declared in this scope > > dladdr(StackTrace[i], &dlinfo); > > ^ > > make[4]: *** [lib/Support/CMakeFiles/LLVMSupport.dir/build.make:2223: > lib/Support/CMakeFiles/LLVMSupport.dir/Signals.cpp.o] Error 1 > > > > I am using CMake v3.5.2 built from source on Cygwin32 because v3.5.2 is > not yet available from for download, and GCC v5.4.0. Other than CMake, all > of my Cygwin32 installation is from the distribution. > > > > Is there a quick-fix known for this, or has it been fixed in a later > revision, or is this a new problem? > > > > Thanks, > > > > MartinO > > > > _______________________________________________ > LLVM Developers mailing list > llvm-dev at lists.llvm.org > http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev > >-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20160630/e80b170e/attachment.html>
Reid Kleckner via llvm-dev
2016-Jun-30 14:43 UTC
[llvm-dev] Building LLVM under Cygwin32 fails
Nakamura runs a bot labelled "cygwin" here, but it's apparently down: http://bb.pgr.jp/builders I'm not sure it's still a supported configuration, but we could probably accept non-invasive patches to make it work. On Thu, Jun 30, 2016 at 1:16 AM, Martin J. O'Riordan via llvm-dev < llvm-dev at lists.llvm.org> wrote:> I am updating our out-of-tree copy of LLVM to track the head (revision > #272991 specifically). > > > > I have it building successfully with VC++ 2013 and CMake v3.5.2 on > Windows, and with GCC v4.8.5 and CMake v3.5.2 on CentOS; but when I try > building on Windows using Cygwin32 I get the following build failures: > > > > [ 4%] Building CXX object > lib/Support/CMakeFiles/LLVMSupport.dir/Signals.cpp.o > > In file included from > /src/Compilers/llvmHead/llvm/lib/Support/Signals.cpp:180:0: > > /src/Compilers/llvmHead/llvm/lib/Support/Unix/Signals.inc: In function > ‘void llvm::sys::PrintStackTrace(llvm::raw_ostream&)’: > > /src/Compilers/llvmHead/llvm/lib/Support/Unix/Signals.inc:418:5: error: > ‘Dl_info’ was not declared in this scope > > Dl_info dlinfo; > > ^ > > /src/Compilers/llvmHead/llvm/lib/Support/Unix/Signals.inc:419:28: error: > ‘dlinfo’ was not declared in this scope > > dladdr(StackTrace[i], &dlinfo); > > ^ > > /src/Compilers/llvmHead/llvm/lib/Support/Unix/Signals.inc:419:34: error: > ‘dladdr’ was not declared in this scope > > dladdr(StackTrace[i], &dlinfo); > > ^ > > /src/Compilers/llvmHead/llvm/lib/Support/Unix/Signals.inc:430:5: error: > ‘Dl_info’ was not declared in this scope > > Dl_info dlinfo; > > ^ > > /src/Compilers/llvmHead/llvm/lib/Support/Unix/Signals.inc:431:28: error: > ‘dlinfo’ was not declared in this scope > > dladdr(StackTrace[i], &dlinfo); > > ^ > > /src/Compilers/llvmHead/llvm/lib/Support/Unix/Signals.inc:431:34: error: > ‘dladdr’ was not declared in this scope > > dladdr(StackTrace[i], &dlinfo); > > ^ > > make[4]: *** [lib/Support/CMakeFiles/LLVMSupport.dir/build.make:2223: > lib/Support/CMakeFiles/LLVMSupport.dir/Signals.cpp.o] Error 1 > > > > I am using CMake v3.5.2 built from source on Cygwin32 because v3.5.2 is > not yet available from for download, and GCC v5.4.0. Other than CMake, all > of my Cygwin32 installation is from the distribution. > > > > Is there a quick-fix known for this, or has it been fixed in a later > revision, or is this a new problem? > > > > Thanks, > > > > MartinO > > > > _______________________________________________ > LLVM Developers mailing list > llvm-dev at lists.llvm.org > http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev > >-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20160630/8d1607fa/attachment-0001.html>
Martin J. O'Riordan via llvm-dev
2016-Jun-30 15:18 UTC
[llvm-dev] Building LLVM under Cygwin32 fails
Okay, thanks Bruce.
The only thing I have changed is to move to CMake v3.5.2 (required upgrade) and
synched with LLVM #272991 (from #262824) and it was building perfectly before.
The header ‘Unix/Signals.inc’ is included conditionally by
‘lib/Support/Signals.cpp’ at the very end of the file using:
// Include the platform-specific parts of this class.
#ifdef LLVM_ON_UNIX
#include "Unix/Signals.inc"
#endif
#ifdef LLVM_ON_WIN32
#include "Windows/Signals.inc"
#endif
Nothing relevant appears to have changed in the ‘lib/Support’ directory or in
the file ‘lib/Support/Signals.cpp’, so I think it might be a CMake issue. One
variable is that I had to build CMake v3.5.2 for Cygwin from source because the
newest available from cygwin.org is v3.3.2-1 which does not meet the minimum bar
for LLVM anymore. The Windows and CentOS versions are official releases, but
usually the ‘configure/build/install’ sequence works out of the box for CMake.
The following condition (‘lib/Support/Unix/Signals.inc’ line #415):
#if HAVE_DLFCN_H && __GNUG__
is evaluating TRUE, so I’m guessing that CMake is taking a wrong turn somewhere.
I changed this locally to:
#if !defined(__CYGWIN__) && HAVE_DLFCN_H && __GNUG__
and it compiles fine now. I’m guessing that CMake is not correctly setting
something, but I’ll have to dig deeper to find out exactly what though.
Thanks,
MartinO
From: bruce.hoult at gmail.com [mailto:bruce.hoult at gmail.com] On Behalf Of
Bruce Hoult
Sent: 30 June 2016 13:56
To: Martin J. O'Riordan
Cc: LLVM Developers
Subject: Re: [llvm-dev] Building LLVM under Cygwin32 fails
Googling indicates that cygwin doesn't have that functionality. Or, at
least, didn't in 2010, when someone asked about the same problem:
https://cygwin.com/ml/cygwin/2010-01/msg00596.html
"cygwin has only dlsym() not the SGI DL_info + dladdr() yet.
clang just needs it to get the path for the CIndex dll.
This should be possible with the code in the LLVM_ON_WIN32 section,
and convert then the path from win to posix with cygwin_conv_path()."
On Thu, Jun 30, 2016 at 11:16 AM, Martin J. O'Riordan via llvm-dev
<llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org> >
wrote:
I am updating our out-of-tree copy of LLVM to track the head (revision #272991
specifically).
I have it building successfully with VC++ 2013 and CMake v3.5.2 on Windows, and
with GCC v4.8.5 and CMake v3.5.2 on CentOS; but when I try building on Windows
using Cygwin32 I get the following build failures:
[ 4%] Building CXX object lib/Support/CMakeFiles/LLVMSupport.dir/Signals.cpp.o
In file included from
/src/Compilers/llvmHead/llvm/lib/Support/Signals.cpp:180:0:
/src/Compilers/llvmHead/llvm/lib/Support/Unix/Signals.inc: In function ‘void
llvm::sys::PrintStackTrace(llvm::raw_ostream&)’:
/src/Compilers/llvmHead/llvm/lib/Support/Unix/Signals.inc:418:5: error:
‘Dl_info’ was not declared in this scope
Dl_info dlinfo;
^
/src/Compilers/llvmHead/llvm/lib/Support/Unix/Signals.inc:419:28: error:
‘dlinfo’ was not declared in this scope
dladdr(StackTrace[i], &dlinfo);
^
/src/Compilers/llvmHead/llvm/lib/Support/Unix/Signals.inc:419:34: error:
‘dladdr’ was not declared in this scope
dladdr(StackTrace[i], &dlinfo);
^
/src/Compilers/llvmHead/llvm/lib/Support/Unix/Signals.inc:430:5: error:
‘Dl_info’ was not declared in this scope
Dl_info dlinfo;
^
/src/Compilers/llvmHead/llvm/lib/Support/Unix/Signals.inc:431:28: error:
‘dlinfo’ was not declared in this scope
dladdr(StackTrace[i], &dlinfo);
^
/src/Compilers/llvmHead/llvm/lib/Support/Unix/Signals.inc:431:34: error:
‘dladdr’ was not declared in this scope
dladdr(StackTrace[i], &dlinfo);
^
make[4]: *** [lib/Support/CMakeFiles/LLVMSupport.dir/build.make:2223:
lib/Support/CMakeFiles/LLVMSupport.dir/Signals.cpp.o] Error 1
I am using CMake v3.5.2 built from source on Cygwin32 because v3.5.2 is not yet
available from for download, and GCC v5.4.0. Other than CMake, all of my
Cygwin32 installation is from the distribution.
Is there a quick-fix known for this, or has it been fixed in a later revision,
or is this a new problem?
Thanks,
MartinO
_______________________________________________
LLVM Developers mailing list
llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>
http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
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