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Jack Howarth

2010-Apr-13 03:23 UTC

[LLVMdev] darwin dragon-egg build issues

On Sat, Apr 10, 2010 at 08:29:07PM -0500, Peter O'Gorman
wrote:> On 04/10/2010 08:01 PM, Jack Howarth wrote:
> 
> > 
> > bash-3.2$ GCC=/sw/bin/gcc-4 CC=gcc-4 CXX=g++-4 CFLAGS=-I/sw/include
CXXFLAGS=-I/sw/include LLVM_CONFIG=/sw/lib/llvm/bin/llvm-config make
> > g++-4 -c  -I/sw/lib/llvm/include  -D_DEBUG -D_GNU_SOURCE
-D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS -MD -MP -DIN_GCC
-DREVISION=\"100954M\"
-DTARGET_NAME=\"x86_64-apple-darwin10.3.0\"
-I/Users/howarth/llvm_svn/dragonegg
-I/sw/lib/gcc4.5/lib/gcc/x86_64-apple-darwin10.3.0/4.5.0/plugin/include
-I/Users/howarth/llvm_svn/dragonegg/x86
-I/Users/howarth/llvm_svn/dragonegg/darwin -I/sw/include -Wall -Werror
-I/sw/lib/llvm/include  -D_DEBUG -D_GNU_SOURCE -D__STDC_LIMIT_MACROS
-D__STDC_CONSTANT_MACROS -O2  -fno-exceptions -fno-rtti -fno-common
-Woverloaded-virtual /Users/howarth/llvm_svn/dragonegg/llvm-convert.cpp
> > In file included from
/Users/howarth/llvm_svn/dragonegg/llvm-convert.cpp:88:0:
> > /Users/howarth/llvm_svn/dragonegg/llvm-debug.h:150:3: error: ‘DIFile’
does not name a type
> 
> 
> After editing the dragonegg Makefile to remove -Werror, installing
> r100954 of llvm/clang (to /opt/llv, being too lazy to type the
'm'),
> copying the missing  darwin-sections.def to the installed gcc-4.5.0
> release-candidate, as you noticed, I could add /opt/llv/bin to my path
> and the path to my gcc-4.5 install, and do:
> 
> GCC=/sw/lib/gcc4.5/bin/gcc make CPPFLAGS="-DENABLE_LTO
-I/sw/include"
> 
> And it worked until the final link, which failed (-shared works in
> recent gcc, but is just an alias for -dynamiclib, and doesn't allow
> undefined symbols). I copy & pasted the link line, added -undefined
> dynamic_lookup, and it linked and apparently works:
> 
> mini:dragonegg pogma$ gcc hello.c -S -O1 -o - -fplugin=./dragonegg.so
> -fplugin-arg-dragonegg-emit-ir
> ; ModuleID = 'hello.c'
> target datalayout >
"e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
> target triple = "x86_64-apple-darwin10.3.0"
> 
> %"char[]" = type [6 x i8]
> 
> @.str = private constant %"char[]" c"Hello\00", align 1
; <%"char[]"*>
> [#uses=2]
> 
> define i32 @main() nounwind {
> entry:
>   %0 = tail call i32 @puts(i8* getelementptr inbounds (%"char[]"*
@.str,
> i64 0, i64 0)) nounwind ; <i32> [#uses=0]
>   ret i32 undef
> }
> 
> declare i32 @puts(i8* nocapture) nounwind
> 
> Pretty awesome!
> 
> Peter
Peter,
   Does this still work for you with current llvm svn? I created a new llvm
fink package from current svn and used that to build the current dragon-egg
against my gcc45 package with plugin support enabled. The build of the plugin
worked but when I try to use it I get..

bash-3.2$ gcc-4 hello.c -S -O1 -o - -fplugin=./dragonegg.so
cc1: error: Cannot load plugin ./dragonegg.so
dlopen(./dragonegg.so, 10): Symbol not found: _classify_argument
  Referenced from: /Users/howarth/llvm_svn/dragonegg/dragonegg.so
  Expected in: flat namespace
 in /Users/howarth/llvm_svn/dragonegg/dragonegg.so

I noticed that I have...

bash-3.2$ otool -L ./dragonegg.so
./dragonegg.so:
	/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version
125.0.1)
	/usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version 7.9.0)

in both builds I tried...

GCC=/sw/lib/gcc4.5/bin/gcc LLVM_CONFIG=/sw/lib/llvm/bin/llvm-config make
CPPFLAGS="-DENABLE_LTO -I/sw/include"

and

GCC=/sw/lib/gcc4.5/bin/gcc LLVM_CONFIG=/sw/lib/llvm/bin/llvm-config CC=gcc-4
CCX=g++-4 LDFLAGS=-L/sw/lib make CPPFLAGS="-DENABLE_LTO -I/sw/include"

How do you build llvm? I am using...

Info2: <<
Package: llvm
Version: 2.799
Revision: 101114
#Source: http://llvm.org/releases/%v/llvm-%v.tar.gz
Source: http://llvm.org/releases/%v/llvm-2.8.tar.gz
Source-MD5: d317d277e97c3852994bb4dcaadf1591
SourceDirectory: llvm-2.8
Type: -64bit .
Architecture: x86_64
BuildDepends: fink (>= 0.28)
ConfigureParams: <<
 --prefix=%p/lib/llvm --mandir=%p/share/man --infodir=%p/share/info
--with-gmp=%p --with-libiconv-prefix=/usr --with-system-zlib
--with-as=`xcode-select  -print-path`/usr/bin/as --with-ld=`xcode-select 
-print-path`/usr/bin/ld --with-nm=`xcode-select  -print-path`/usr/bin/nm
<<
CompileScript: <<
 #!/bin/bash -ev
 export LD=`xcode-select  -print-path`/usr/bin/ld
 ulimit -s `ulimit -s`
 mkdir ../llvm_objdir
 cd ../llvm_objdir
# ../llvm-%v/configure %c --enable-optimized --enable-assertions --enable-pic
--enable-targets=host-only
../llvm-2.8/configure %c --enable-optimized --enable-assertions --enable-pic
--enable-targets=host-only
 num_cpu=$(echo `sysctl -n hw.ncpu`)
 make -j $num_cpu
<<
InstallScript: <<
 #!/bin/sh -ev
 export LD=`xcode-select  -print-path`/usr/bin/ld
 cd ../llvm_objdir
 make install DESTDIR=%d 
 mkdir -p %i/bin
 ln -s %p/lib/llvm/bin/bugpoint %i/bin/bugpoint
 ln -s %p/lib/llvm/bin/gccas %i/bin/gccas
 ln -s %p/lib/llvm/bin/gccld %i/bin/gccld
 ln -s %p/lib/llvm/bin/llc %i/bin/llc
 ln -s %p/lib/llvm/bin/lli %i/bin/lli
 ln -s %p/lib/llvm/bin/llvm-ar %i/bin/llvm-ar
 ln -s %p/lib/llvm/bin/llvm-as %i/bin/llvm-as
 ln -s %p/lib/llvm/bin/llvm-bcanalyzer %i/bin/llvm-bcanalyzer
 ln -s %p/lib/llvm/bin/llvm-config %i/bin/llvm-config
 ln -s %p/lib/llvm/bin/llvm-db %i/bin/llvm-db
 ln -s %p/lib/llvm/bin/llvm-dis %i/bin/llvm-dis
 ln -s %p/lib/llvm/bin/llvm-extract %i/bin/llvm-extract
 ln -s %p/lib/llvm/bin/llvm-ld %i/bin/llvm-ld
 ln -s %p/lib/llvm/bin/llvm-link %i/bin/llvm-link
 ln -s %p/lib/llvm/bin/llvm-nm %i/bin/llvm-nm
 ln -s %p/lib/llvm/bin/llvm-prof  %i/bin/llvm-prof
 ln -s %p/lib/llvm/bin/llvm-ranlib %i/bin/llvm-ranlib
 ln -s %p/lib/llvm/bin/llvm-stub %i/bin/llvm-stub
 ln -s %p/lib/llvm/bin/llvmc %i/bin/llvmc
 ln -s %p/lib/llvm/bin/opt %i/bin/opt
 <<
SplitOff: <<
  Package: %N-shlibs
  Files: <<
     lib/llvm/lib/libEnhancedDisassembly.dylib
     lib/llvm/lib/libLLVMHello.dylib
     lib/llvm/lib/libprofile_rt.dylib
     lib/llvm/lib/libLTO.dylib
  << 
  Shlibs: <<
     !%p/lib/llvm/lib/libEnhancedDisassembly.dylib
     !%p/lib/llvm/lib/libLLVMHello.dylib
     !%p/lib/llvm/lib/libprofile_rt.dylib
     %p/lib/llvm/lib/libLTO.dylib 0.0.0 %n (>= 2.7-1) 64 
  <<
<<
License: GPL
Description: Low Level Virtual Machine Compiler
DescDetail: <<
A compilation strategy designed to enable effective program optimization across
the entire lifetime of a program. LLVM supports effective optimization at
compile time, link-time (particularly interprocedural), run-time and offline 
(i.e., after software is installed), while remaining transparent to developers
and maintaining compatibility with existing build scripts.
<<
DescPackaging: <<
The file libLTO.dylib in %p/lib/llvm/lib can be used to replace the libLTO.dylib
in /Developer/usr/lib from Xcode 3.1.2 to enable full LTO support at -O4 in
the compilers of the llvm-gcc42 package. Note that the fink maintainer mode
doesn't understand the @executable_path/../lib/libLTO.dylib syntax in
libLTO.dylib's
otool -L output.
<<
Homepage: http://llvm.org/
Maintainer: None <fink-devel at lists.sourceforge.net>
<<

Duncan Sands

2010-Apr-13 07:01 UTC

head link

[LLVMdev] darwin dragon-egg build issues

Hi Jack,
> bash-3.2$ gcc-4 hello.c -S -O1 -o - -fplugin=./dragonegg.so
> cc1: error: Cannot load plugin ./dragonegg.so
> dlopen(./dragonegg.so, 10): Symbol not found: _classify_argument
looks like you forgot to apply the i386_static.diff patch to gcc.

Ciao,

Duncan.

Jack Howarth

2010-Apr-13 13:26 UTC

head link

[LLVMdev] darwin dragon-egg build issues

On Tue, Apr 13, 2010 at 09:01:16AM +0200, Duncan Sands
wrote:> Hi Jack,
>
>> bash-3.2$ gcc-4 hello.c -S -O1 -o - -fplugin=./dragonegg.so
>> cc1: error: Cannot load plugin ./dragonegg.so
>> dlopen(./dragonegg.so, 10): Symbol not found: _classify_argument
>
> looks like you forgot to apply the i386_static.diff patch to gcc.
>
> Ciao,
>
> Duncan.
Duncan,
   Yes. I had dropped that patch since the last time I tried to
build with it my machine had a kernel panic. I was puzzled by
that patch since it seems to be declaring the type_natural_mode(),
classify_argument(), examine_argument() and contains_aligned_value_p()
as extern while leaving the original subroutines declared in
gcc/config/i386/i386.c. Doesn't extern imply that the code resides
outside that source file? From...

http://wiki.answers.com/Q/What_is_the_use_of_extern_in_C

I see "An extern is something that is defined externally to the current
module."
so aren't we invoking undefined behavior or something like that? We
seem to both be saying these are defined externally while still
defining them locally.
                    Jack

Jack Howarth

2010-Apr-13 13:59 UTC

head link

[LLVMdev] darwin dragon-egg build issues

On Tue, Apr 13, 2010 at 09:01:16AM +0200, Duncan Sands
wrote:> Hi Jack,
>
>> bash-3.2$ gcc-4 hello.c -S -O1 -o - -fplugin=./dragonegg.so
>> cc1: error: Cannot load plugin ./dragonegg.so
>> dlopen(./dragonegg.so, 10): Symbol not found: _classify_argument
>
> looks like you forgot to apply the i386_static.diff patch to gcc.
>
> Ciao,
>
> Duncan.
Duncan,
   Doesn't i386_static.diff represent a violation of...

https://www.securecoding.cert.org/confluence/display/seccode/DCL36-C.+Do+not+declare+an+identifier+with+conflicting+linkage+classifications

since it first declares a function as extern and then
redefines it locally?
                  Jack

Jack Howarth

2010-Apr-13 23:22 UTC

head link

[LLVMdev] darwin dragon-egg build issues

On Tue, Apr 13, 2010 at 09:01:16AM +0200, Duncan Sands
wrote:> Hi Jack,
>
>> bash-3.2$ gcc-4 hello.c -S -O1 -o - -fplugin=./dragonegg.so
>> cc1: error: Cannot load plugin ./dragonegg.so
>> dlopen(./dragonegg.so, 10): Symbol not found: _classify_argument
>
> looks like you forgot to apply the i386_static.diff patch to gcc.
>
> Ciao,
>
> Duncan.
Duncan,
   With the proposed patches...

http://gcc.gnu.org/ml/gcc-patches/2010-04/msg00545.html
http://gcc.gnu.org/ml/gcc-patches/2010-04/msg00714.html

I am able to build dragon-egg svn against the current
svn of llvm and my gcc45 package. It has been able to
compile simple c code at -O3. Nice.
  Would you please consider adjusting the current dragon-egg
svn for compilation against llvm-2.7 and spinning off a
tarball for the llvm 2.7 release. I was thinking you might
use something like... dragon-egg-gcc4.5-2.7 to reflect that
it is a reference release for llvm 2.7 and buildable against
gcc 4.5.0. If you can do that, I plan on creating a fink
dragon-egg package with compiler wrappers to automate its
use when I update the llvm/llvm-gcc42 fink packages to the
2.7 release.
            Jack

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