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<p class="subheader">Linking shared library fails on Win7 64-bit with x64_64-w64-mingw32-gcc-4.6.3</p>
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<p class="header_addl_info">Last modified: 2012-12-14 10:24:19 CST</p>
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<a href="attachment.cgi?id=9704"
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<b><span class="bz_obsolete">Fixes this issue by incorporating using .a.o instead of .def into Makefile.rules for mingw64</span></b></a>
<span class="bz_attach_extra_info">
(623 bytes,
patch)
<br>
<a href="#attach_9704"
title="Go to the comment associated with the attachment">2012-12-14 09:06 CST</a>,
<span class="vcard"><span class="fn">Moritz Maxeiner</span>
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<b>Use a.o instead of .def for main shared library only</b></a>
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(714 bytes,
patch)
<br>
<a href="#attach_9705"
title="Go to the comment associated with the attachment">2012-12-14 10:24 CST</a>,
<span class="vcard"><span class="fn">Moritz Maxeiner</span>
</span>
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<span class="bz_comment_user"><span class="vcard">valtron2000
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<span class="bz_comment_time">
2012-05-11 01:29:11 CDT
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<pre class="bz_comment_text" >I did managed to get it working, though, and it seems to be a problem with a
makefile (or perhaps the autoconf).
How I ran configure:
sh ../llvm-3.0.src/configure --disable-pthreads --enable-shared
--enable-optimizations --enable-targets=host
I then ran make with no options. Everything goes OK until the final linking of
LLVM-3.0.dll:
llvm[1]: Linking Release Shared Library LLVM-3.0.dll
Cannot export Z10MakeErrMsgPSsRKSs: symbol not defined
Cannot export Z4FindIN4llvm15SubtargetInfoKVEEPKT_NS0_9StringRefES4_y: symbol
not defined
Cannot export Z4FindIN4llvm18SubtargetFeatureKVEEPKT_NS0_9StringRefES4_y:
symbol not defined
Cannot export
ZN4PBQP19HeuristicSolverImplINS_10Heuristics6BriggsEE7applyR2ESt14_List_iteratorINS_5Graph9NodeEntryEE:
symbol not defined
Cannot export ZN4llvm10AllocaInst12setAlignmentEj: symbol not defined
Cannot export
ZN4llvm10AllocaInstC1EPNS_4TypeEPNS_5ValueERKNS_5TwineEPNS_10BasicBlockE:
symbol not defined
Cannot export
ZN4llvm10AllocaInstC1EPNS_4TypeEPNS_5ValueERKNS_5TwineEPNS_11InstructionE:
symbol not defined
Cannot export
ZN4llvm10AllocaInstC1EPNS_4TypeEPNS_5ValueEjRKNS_5TwineEPNS_10BasicBlockE:
symbol not defined
Cannot export
ZN4llvm10AllocaInstC1EPNS_4TypeEPNS_5ValueEjRKNS_5TwineEPNS_11InstructionE:
symbol not defined
... (12693 of these errors in total, one for each export in LLVM-3.0.def) ...
The command it fails on is:
g++ -I/c/Users/mti/Desktop/llvm-3.0.src/include
-I/c/Users/mti/Desktop/llvm-3.0.src/tools/llvm-shlib -I/c/Users/mti/Desk
top/llvm-build/include -I/c/Users/mti/Desktop/llvm-build/tools/llvm-shlib
-DNDEBUG -D__NO_CTYPE_INLINE -D_GNU_SOURCE -D
__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -O2
-fomit-frame-pointer -fno-exceptions -fno-rtti -
Woverloaded-virtual -Wcast-qual -O2
-L/c/Users/mti/Desktop/llvm-build/Release/lib
-L/c/Users/mti/Desktop/llvm-build/Rel
ease/lib -pedantic -Wno-long-long -Wall -W -Wno-unused-parameter
-Wwrite-strings -shared /c/Users/mti/Desktop/llvm
-build/tools/llvm-shlib/Release/LLVM-3.0.def -o
/c/Users/mti/Desktop/llvm-build/Release/bin/LLVM-3.0.dll \
-lLLVMAnalysis -lLLVMArchive -lLLVMAsmParser -lLLVMAsmPrinter
-lLLVMBitReader -lLLVMBitWriter -lLLVMCodeGen
-lLLVMCore -lLLVMDebugInfo -lLLVMExecutionEngine -lLLVMInstCombine
-lLLVMInstrumentation -lLLVMInterpreter -lLLVMJIT -lL
LVMLinker -lLLVMMC -lLLVMMCDisassembler -lLLVMMCJIT -lLLVMMCParser -lLLVMObject
-lLLVMRuntimeDyld -lLLVMScalarOpts -lLLV
MSelectionDAG -lLLVMSupport -lLLVMTarget -lLLVMTransformUtils
-lLLVMX86AsmParser -lLLVMX86AsmPrinter -lLLVMX86CodeGen -l
LLVMX86Desc -lLLVMX86Disassembler -lLLVMX86Info -lLLVMX86Utils -lLLVMipa
-lLLVMipo -lpsapi -limagehlp -lm
To fix it, I replaced "LLVM-3.0.def" in the above command with "LLVM-3.0.a.o",
and the DLL gets created. I haven't run the tests, but the DLL seems to work
(using it in a Java project, managed to compile and execute a simple file).</pre>
</div>
<div id="c1" class="bz_comment">
<div class="bz_comment_head">
<span class="bz_comment_number">
<a
href="show_bug.cgi?id=12795#c1">Comment 1</a>
</span>
<span class="bz_comment_user"><span class="vcard"><span class="fn">Moritz Maxeiner</span>
</span>
</span>
<span class="bz_comment_user_images">
</span>
<span class="bz_comment_time">
2012-12-14 09:06:04 CST
</span>
</div>
<pre class="bz_comment_text" >Created <span class="bz_obsolete"><a href="attachment.cgi?id=9704&action=diff" name="attach_9704" title="Fixes this issue by incorporating using .a.o instead of .def into Makefile.rules for mingw64">attachment 9704</a> <a href="attachment.cgi?id=9704&action=edit" title="Fixes this issue by incorporating using .a.o instead of .def into Makefile.rules for mingw64">[details]</a></span>
Fixes this issue by incorporating using .a.o instead of .def into
Makefile.rules for mingw64
Ran into this problem myself and found valtron2000's bug report and fix.
Incorporated this fix into the main Makefile.rules and put this into a patch.
I will also send this patch to llvm-commits shortly.
PS: This patch is done against current trunk (Revision 170207).</pre>
</div>
<div id="c2" class="bz_comment">
<div class="bz_comment_head">
<span class="bz_comment_number">
<a
href="show_bug.cgi?id=12795#c2">Comment 2</a>
</span>
<span class="bz_comment_user"><span class="vcard"><span class="fn">Moritz Maxeiner</span>
</span>
</span>
<span class="bz_comment_user_images">
</span>
<span class="bz_comment_time">
2012-12-14 10:24:19 CST
</span>
</div>
<pre class="bz_comment_text" >Created <span class=""><a href="attachment.cgi?id=9705&action=diff" name="attach_9705" title="Use a.o instead of .def for main shared library only">attachment 9705</a> <a href="attachment.cgi?id=9705&action=edit" title="Use a.o instead of .def for main shared library only">[details]</a></span>
Use a.o instead of .def for main shared library only
Previous patch made the user shared libs not compile.
Added another guard to change .def to .a.o only for the main dll</pre>
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