llvm dev - Aug 2010 - [LLVMdev] Building libLLVM-2.8svn.so fails to link on FreeBSD

I am getting this error on FreeBSD-8.1 (amd64):

llvm[1]: Linking Debug+Asserts Shared Library libLLVM-2.8svn.so
/tmp/llvm-svn/llvm-objects/Debug+Asserts/lib/libLLVMSystem.a(Program.o)(.text+0xa2b):
In function `llvm::sys::Program::Execute(llvm::sys::Path const&, char 
const**, char const**, llvm::sys::Path const**, unsigned int, 
std::basic_string<char, std::char_traits<char>,
std::allocator<char> >*)':
/tmp/llvm-svn/llvm/lib/System/Unix/Program.inc:209: undefined reference 
to `environ'

I found that the error disappears when -Wl,--no-undefined is removed 
from the linker command line (below).
Also in an unrelated observation I noticed that both -Wl,--whole-archive 
and -Wl,--no-whole-archive are specified which is probably wrong.

Yuri

--- linker command line ---
g++ -I/tmp/llvm-svn/llvm-objects/include 
-I/tmp/llvm-svn/llvm-objects/tools/llvm-shlib 
-I/tmp/llvm-svn/llvm/include -I/tmp/llvm-svn/llvm/tools/llvm-shlib  
-D_DEBUG -D_GNU_SOURCE -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS -g 
-fno-exceptions -fno-rtti -fPIC -Woverloaded-virtual -Wcast-qual  
-L/usr/local/lib   -pedantic -Wno-long-long -Wall -W 
-Wno-unused-parameter -Wwrite-strings  -g -Wl,-R -Wl,'$ORIGIN' 
-L/tmp/llvm-svn/llvm-objects/Debug+Asserts/lib 
-L/tmp/llvm-svn/llvm-objects/Debug+Asserts/lib  -shared -lc -o 
/tmp/llvm-svn/llvm-objects/Debug+Asserts/lib/libLLVM-2.8svn.so  \
            -Wl,--whole-archive -lLLVMARMAsmParser -lLLVMARMAsmPrinter 
-lLLVMARMCodeGen -lLLVMARMDisassembler -lLLVMARMInfo 
-lLLVMAlphaAsmPrinter -lLLVMAlphaCodeGen -lLLVMAlphaInfo -lLLVMAnalysis 
-lLLVMArchive -lLLVMAsmParser -lLLVMAsmPrinter -lLLVMBitReader 
-lLLVMBitWriter -lLLVMBlackfinAsmPrinter -lLLVMBlackfinCodeGen 
-lLLVMBlackfinInfo -lLLVMCBackend -lLLVMCBackendInfo 
-lLLVMCellSPUAsmPrinter -lLLVMCellSPUCodeGen -lLLVMCellSPUInfo 
-lLLVMCodeGen -lLLVMCore -lLLVMCppBackend -lLLVMCppBackendInfo 
-lLLVMExecutionEngine -lLLVMInstCombine -lLLVMInstrumentation 
-lLLVMInterpreter -lLLVMJIT -lLLVMLinker -lLLVMMBlazeAsmPrinter 
-lLLVMMBlazeCodeGen -lLLVMMBlazeInfo -lLLVMMC -lLLVMMCDisassembler 
-lLLVMMCParser -lLLVMMSIL -lLLVMMSILInfo -lLLVMMSP430AsmPrinter 
-lLLVMMSP430CodeGen -lLLVMMSP430Info -lLLVMMipsAsmPrinter 
-lLLVMMipsCodeGen -lLLVMMipsInfo -lLLVMPIC16AsmPrinter 
-lLLVMPIC16CodeGen -lLLVMPIC16Info -lLLVMPowerPCAsmPrinter 
-lLLVMPowerPCCodeGen -lLLVMPowerPCInfo -lLLVMScalarOpts 
-lLLVMSelectionDAG -lLLVMSparcAsmPrinter -lLLVMSparcCodeGen 
-lLLVMSparcInfo -lLLVMSupport -lLLVMSystem -lLLVMSystemZAsmPrinter 
-lLLVMSystemZCodeGen -lLLVMSystemZInfo -lLLVMTarget -lLLVMTransformUtils 
-lLLVMX86AsmParser -lLLVMX86AsmPrinter -lLLVMX86CodeGen 
-lLLVMX86Disassembler -lLLVMX86Info -lLLVMXCoreAsmPrinter 
-lLLVMXCoreCodeGen -lLLVMXCoreInfo -lLLVMipa -lLLVMipo -lLLVMpic16passes 
-Wl,--no-whole-archive -Wl,--no-undefined -lpthread -lffi -lm

Please check in the attached patch: it fixes the problem on FreeBSD.
Before I used the patch from someone (don't remember). It just had an 
else clause on HOST_OS in the Makefile with the same options in 'else' 
clause as for Linux.

Thank you,
Yuri

On 08/19/2010 15:45, Yuri wrote:
> I am getting this error on FreeBSD-8.1 (amd64):
>
> llvm[1]: Linking Debug+Asserts Shared Library libLLVM-2.8svn.so
>
/tmp/llvm-svn/llvm-objects/Debug+Asserts/lib/libLLVMSystem.a(Program.o)(.text+0xa2b):
> In function `llvm::sys::Program::Execute(llvm::sys::Path const&, char
> const**, char const**, llvm::sys::Path const**, unsigned int,
> std::basic_string<char, std::char_traits<char>,
std::allocator<char>  >*)':
> /tmp/llvm-svn/llvm/lib/System/Unix/Program.inc:209: undefined reference
> to `environ'
>
> I found that the error disappears when -Wl,--no-undefined is removed
> from the linker command line (below).
> Also in an unrelated observation I noticed that both -Wl,--whole-archive
> and -Wl,--no-whole-archive are specified which is probably wrong.
>
> Yuri
>
>    
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