[lldb-dev] Q: link order for lldb

[Pawel Wodnicki]

> I'm not sure how it works on Windows -- cygwin can be finicky sometimes. On Linux though, the following linker invocation works:
>

My current fresh cygwin install seems surprising stable,
all random crashes are gone! The only catch so far is the
configure, specifically lldb Makefile.

> 
> llvm[3]: Linking Debug+Asserts Shared Library liblldb.so
> g++ -I/home/baldrick/lldb/build/include -I/home/baldrick/lldb/build/tools/lldb/lib -I/home/baldrick/lldb/llvm/include -I/home/baldrick/lldb/llvm/tools/lldb/lib  -D_DEBUG -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -g -fvisibility-inlines-hidden -fno-exceptions -fno-rtti -fPIC -Woverloaded-virtual -Wcast-qual -std=c++0x -g -Wl,-R -Wl,'$ORIGIN' -L/home/baldrick/lldb/build/Debug+Asserts/lib -L/home/baldrick/lldb/build/Debug+Asserts/lib     -pedantic -Wno-long-long -Wall -W -Wno-unused-parameter -Wwrite-strings   -Wno-uninitialized   -shared -o /home/baldrick/lldb/build/Debug+Asserts/lib/liblldb.so  \
> 	  -Wl,--whole-archive -llldbAPI -llldbBreakpoint -llldbCommands -llldbCore -llldbExpression -llldbHostCommon -llldbInitAndLog -llldbInterpreter -llldbPluginABIMacOSX_arm -llldbPluginABIMacOSX_i386 -llldbPluginABISysV_x86_64 -llldbPluginDisassemblerLLVM -llldbPluginDynamicLoaderStatic -llldbPluginDynamicLoaderPOSIX -llldbPluginEmulateInstructionARM -llldbPluginLanguageRuntimeCPlusPlusItaniumABI -llldbPluginLanguageRuntimeObjCAppleObjCRuntime -llldbPluginObjectContainerBSDArchive -llldbPluginObjectFileELF -llldbPluginObjectFilePECOFF -llldbPluginOperatingSystemPython -llldbPluginPlatformGDBServer -llldbPluginProcessGDBRemote -llldbPluginSymbolFileDWARF -llldbPluginSymbolFileSymtab -llldbPluginUnwindAssemblyInstEmulation -llldbPluginUnwindAssemblyx86 -llldbPluginUtility -llldbSymbol -llldbTarget -llldbUtility -lclangAnalysis -lclangAST -lclangBasic -lclangCodeGen -lclangFrontend -lclangDriver -lclangEdit -lclangLex -lclangParse -lclangSema -lclangSerialization -lLLVMMCDisass!
 embler -
llldbPluginPlatformMacOSX -llldbPluginPlatformLinux -llldbPluginPlatformFreeBSD -lclangRewriteCore -lclangRewriteFrontend -llldbHostLinux -llldbPluginProcessLinux -llldbPluginProcessPOSIX -llldbPluginDynamicLoaderMacOSX -llldbPluginDynamicLoaderDarwinKernel -llldbPluginOperatingSystemDarwinKernel -Wl,--no-whole-archive -lLLVMLinker -lLLVMArchive -lLLVMMCJIT -lLLVMJIT -lLLVMRuntimeDyld -lLLVMExecutionEngine -lLLVMipo -lLLVMVectorize -lLLVMInstrumentation -lLLVMBitWriter -lLLVMBitReader -lLLVMAsmParser -lLLVMHexagonCodeGen -lLLVMHexagonDesc -lLLVMHexagonInfo -lLLVMHexagonAsmPrinter -lLLVMNVPTXCodeGen -lLLVMNVPTXDesc -lLLVMNVPTXInfo -lLLVMNVPTXAsmPrinter -lLLVMMBlazeDisassembler -lLLVMMBlazeCodeGen -lLLVMMBlazeDesc -lLLVMMBlazeAsmPrinter -lLLVMMBlazeAsmParser -lLLVMMBlazeInfo -lLLVMCppBackendCodeGen -lLLVMCppBackendInfo -lLLVMMSP430CodeGen -lLLVMMSP430Desc -lLLVMMSP430Info -lLLVMMSP430AsmPrinter -lLLVMXCoreDisassembler -lLLVMXCoreCodeGen -lLLVMXCoreDesc -lLLVMXCoreInfo -lLLVMXC!
 oreAsmPri
nter -lLLVMMipsDisassembler -lLLVMMipsCodeGen -lLLVMMipsAsmParser -lLLVMMipsDesc -lLLVMMipsInfo -lLLVMMipsAsmPrinter -lLLVMARMDisassembler -lLLVMARMCodeGen -lLLVMARMAsmParser -lLLVMARMDesc -lLLVMARMInfo -lLLVMARMAsmPrinter -lLLVMPowerPCCodeGen -lLLVMPowerPCDesc -lLLVMPowerPCInfo -lLLVMPowerPCAsmPrinter -lLLVMSparcCodeGen -lLLVMSparcDesc -lLLVMSparcInfo -lLLVMX86Disassembler -lLLVMX86AsmParser -lLLVMX86CodeGen -lLLVMSelectionDAG -lLLVMAsmPrinter -lLLVMMCParser -lLLVMCodeGen -lLLVMScalarOpts -lLLVMInstCombine -lLLVMTransformUtils -lLLVMipa -lLLVMAnalysis -lLLVMX86Desc -lLLVMX86Info -lLLVMTarget -lLLVMX86AsmPrinter -lLLVMMC -lLLVMObject -lLLVMX86Utils -lLLVMCore -lLLVMSupport -Wl,--no-undefined -L/usr/lib/python2.6/config -lpthread -ldl -lutil -lm -lpython2.6 -lrt -lpthread -lrt -ldl -lm 

Thank you!

> 
> 
> Out of curiosity, what made you abandon the cmake route? I was hoping to take the cmakefiles from the windows branch and port them to Linux at some point... It's somewhat concerning if they are problematic even on Windows.

 Problematic - did I say that? I did not abandon cmake, but the
current lldb seems to require MSVC2012 to do a native windows
build and my dev environment is still pinned to MSVC2008.

 Since, I just happen to have a leftover llvm+clang 3.2 cygwin
build, it seemed to be the easiest way to try the windows branch.
Actually, I have a bunch of different 3.2 setups so out of habit
I might try some other permutations too.

 There is another issue, I had problems compiling
Interpreter/LLDBWrapPython.cpp. Two python callbacks
did not have extern "C" linkage and I had to add that.
I am not sure if this is lldb.swig and/or swig problem
or some scryptology issue.

My swig reports - SWIG Version 2.0.9
is this recent enough for a build?

> 
> 
> Best of luck,
> Dan
> 

Cheers,
Paweł


> On 2013-01-16, at 5:23 PM, Pawel Wodnicki wrote:
> 
>> Hi,
>>
>> I got to the point where I can link on cygwin. I am using
>> configure/make to build, but at the moment it seems to be
>> a bit broken and on cygwin does not produce proper link command.
>>
>> I just want to link for now :-) so I am fiddling with Makefile
>> and running into link problems like:
>>
>> .../lib/liblldbExpression.a(DWARFExpression.o):DWARFExpression.cpp:(.text+0x1d74):
>> undefined reference to`lldb_private::DataEncoder::~DataEncoder()'
>>
>> I do not think I have a complete nor even correct link order (pasted
>> below for reference) and the moment I do not have access to OS X
>> nor Linux machine to check.
>>
>> Is there a way to determine proper order of dependencies for lldb?
>>
>> Paweł
>>
>>
>>
>> -llldbAPI -llldbBreakpoint -llldbCommands \
>> -llldbCore -llldbExpression -llldbHostCommon -llldbInitAndLog \
>> -llldbInterpreter -llldbPluginABIMacOSX_arm -llldbPluginABIMacOSX_i386 \
>> -llldbPluginABISysV_x86_64 -llldbPluginDisassemblerLLVM \
>> -llldbPluginDynamicLoaderStatic -llldbPluginEmulateInstructionARM \
>> -llldbPluginLanguageRuntimeCPlusPlusItaniumABI \
>> -llldbPluginLanguageRuntimeObjCAppleObjCRuntime \
>> -llldbPluginObjectContainerBSDArchive -llldbPluginObjectFileELF \
>> -llldbPluginObjectFilePECOFF -llldbPluginPlatformGDBServer \
>> -llldbPluginProcessGDBRemote -llldbPluginSymbolFileDWARF \
>> -llldbPluginSymbolFileSymtab -llldbPluginUnwindAssemblyInstEmulation \
>> -llldbPluginUnwindAssemblyx86 -llldbPluginUtility -llldbSymbol \
>> -llldbTarget -llldbUtility -lclangAnalysis -lclangAST -lclangBasic \
>> -lclangCodeGen -lclangFrontend -lclangDriver -lclangEdit \
>> -lclangLex -lclangRewriteCore  -lclangRewriteFrontend -lclangParse
>> -lclangSema -lclangSerialization \
>> -lLLVMMCDisassembler -llldbPluginPlatformMacOSX \
>> -llldbPluginPlatformLinux -llldbPluginPlatformFreeBSD \
>> -llldbPluginDynamicLoaderPOSIX -Wl,--no-whole-archive \
>> -lLLVMLinker -lLLVMArchive -lLLVMMCJIT -lLLVMJIT -lLLVMRuntimeDyld \
>> -lLLVMExecutionEngine -lLLVMipo -lLLVMVectorize -lLLVMInstrumentation \
>> -lLLVMBitWriter -lLLVMBitReader -lLLVMAsmParser -lLLVMX86AsmParser \
>> -lLLVMX86Disassembler -lLLVMX86CodeGen -lLLVMSelectionDAG \
>> -lLLVMAsmPrinter -lLLVMMCParser -lLLVMCodeGen -lLLVMScalarOpts \
>> -lLLVMInstCombine -lLLVMTransformUtils -lLLVMipa -lLLVMAnalysis \
>> -lLLVMX86Desc -lLLVMX86Info -lLLVMTarget -lLLVMX86AsmPrinter -lLLVMMC \
>> -lLLVMObject -lLLVMX86Utils -lLLVMCore -lLLVMSupport -Wl,--no-undefined \
>> -lpthread -ldl -lm
>> _______________________________________________
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>