[LLVMdev] build failure on ARM linux

[John Mosby]

I'm getting a different failure in llvmc link on Leopard mac builds (Debug
and Release):
llvm[1]: Linking Release executable llvmc (without symbols)
g++ -DLLVMC_BUILTIN_PLUGIN_1=Base -DLLVMC_BUILTIN_PLUGIN_2=Clang
-I/Users/john/work/projects/comp/llvm-work/exp/build/llvm-check/include
-I/Users/john/work/projects/comp/llvm-work/exp/build/llvm-check/tools/llvmc/driver
-I/Users/john/work/projects/comp/llvm-work/llvm/include
-I/Users/john/work/projects/comp/llvm-work/llvm/tools/llvmc/driver  -D_DEBUG
 -D_GNU_SOURCE -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS -O3
 -fno-common  -Woverloaded-virtual -m32  -pedantic -Wno-long-long -Wall -W
-Wno-unused-parameter -Wwrite-strings  -lCompilerDriver -O3
 -L/Users/john/work/projects/comp/llvm-work/exp/build/llvm-check/Release/lib
-L/Users/john/work/projects/comp/llvm-work/exp/build/llvm-check/Release/lib
 -o
/Users/john/work/projects/comp/llvm-work/exp/build/llvm-check/Release/bin/llvmc
 /Users/john/work/projects/comp/llvm-work/exp/build/llvm-check/tools/llvmc/driver/Release/Main.o
-lplugin_llvmc_Base -lplugin_llvmc_Clang \
   -lpthread -lffi -lm
Undefined symbols:
  "llvmc::ForceLinkageClang()", referenced from:
      llvmc::ForceLinkage()      in Main.o
      _main in Main.o
  "llvmc::ForceLinkageBase()", referenced from:
      llvmc::ForceLinkage()      in Main.o
      _main in Main.o
ld: symbol(s) not found
collect2: ld returned 1 exit status
make[1]: ***
[/Users/john/work/projects/comp/llvm-work/exp/build/llvm-check/Release/bin/llvmc]
Error 1
make: *** [all] Error 1


On Tue, Jun 30, 2009 at 12:29 PM, Nick Lewycky <nlewycky at google.com> wrote:

> I'm seeing this new build failure, starting some time yesterday on ARM:
>
> make[3]: Entering directory `/home/nlewycky/llvm/tools/llvmc/driver'
> llvm[3]: Linking Debug executable llvmc
>
> g++ -DLLVMC_BUILTIN_PLUGIN_1=Base -DLLVMC_BUILTIN_PLUGIN_2=Clang -I/home/nlewycky/llvm/include -I/home/nlewycky/llvm/tools/llvmc/driver  -D_DEBUG  -D_GNU_SOURCE -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS -g -fPIC  -Woverloaded-virtual   -pedantic -Wno-long-long -Wall -W -Wno-unused-parameter -Wwrite-strings  -lCompilerDriver -g  -Wl,-R -Wl,/home/nlewycky/llvm/Debug/bin -Wl,-export-dynamic -L/home/nlewycky/llvm/Debug/lib -L/home/nlewycky/llvm/Debug/lib  -o /home/nlewycky/llvm/Debug/bin/llvmc  /home/nlewycky/llvm/tools/llvmc/driver/Debug/Main.o -lplugin_llvmc_Base -lplugin_llvmc_Clang \
>            -lpthread -ldl -lm
>
> /usr/bin/ld: /home/nlewycky/llvm/Debug/bin/llvmc: hidden symbol `__sync_val_compare_and_swap_4' in /usr/lib/gcc/arm-linux-gnueabi/4.3.3/libgcc.a(linux-atomic.o) is referenced by DSO
> /usr/bin/ld: final link failed: Nonrepresentable section on output
> collect2: ld returned 1 exit status
> make[3]: *** [/home/nlewycky/llvm/Debug/bin/llvmc] Error 1
>
> This is with LLVM being built by the system compiler (GCC 4.3.3-10 Debian).
> I'm not sure what to make of this. Would it be due to the atomics used for
> mutexes?
>
> Nick
>
>
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