<div dir="ltr"><div>Hi Viktor,</div><div><br></div>I believe you shouldn't set LLVM_LINK_COMPONENTS.<div><br></div><div>You don't need to link your TestPass against anything since opt is expected to have everything loaded already. If you're linking against a statically built LLVM, then this way you'll pull in other definitions of cl::opt'ions, which'll then clash with the ones that are in opt.<div><br></div><div>Cheers,</div><div>Philip</div></div></div><br><div class="gmail_quote"><div dir="ltr">On Tue, Jul 10, 2018 at 3:26 PM Viktor Was via llvm-dev <<a href="mailto:llvm-dev@lists.llvm.org">llvm-dev@lists.llvm.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
I'm working on an LLVM Pass plugin and I'm running into a problem when <br>
loading it into opt.<br>
I want to have a custom option for my pass and added an llvm::cl::opt <br>
#include'ing "llvm/Support/CommandLine.h"<br>
<br>
linking the dependant libs causes the following error when loading it <br>
with opt:<br>
opt: CommandLine Error: Option 'debug-pass' registered more than once!<br>
<br>
I narrowed it down to the Core lib but without it I get this<br>
<br>
opt: <br>
/home/qwert/projects/ext/repos/llvm/6.0.0/lib/Support/CommandLine.cpp:281: <br>
void (anonymous <br>
namespace)::CommandLineParser::registerCategory(llvm::cl::OptionCategory *): <br>
Assertion `count_if(RegisteredOptionCategories, [cat](const <br>
OptionCategory *Category) { return cat->getName() == <br>
Category->getName(); }) == 0 && "Duplicate option categories"' failed.<br>
LLVMSymbolizer: error reading file: No such file or directory<br>
#0 0x0000000001d8eea4 (opt+0x1d8eea4)<br>
#1 0x0000000001d8f206 (opt+0x1d8f206)<br>
#2 0x00007fb283220390 __restore_rt <br>
(/lib/x86_64-linux-gnu/libpthread.so.0+0x11390)<br>
#3 0x00007fb2821cd428 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x35428)<br>
#4 0x00007fb2821cf02a abort (/lib/x86_64-linux-gnu/libc.so.6+0x3702a)<br>
#5 0x00007fb2821c5bd7 (/lib/x86_64-linux-gnu/libc.so.6+0x2dbd7)<br>
#6 0x00007fb2821c5c82 (/lib/x86_64-linux-gnu/libc.so.6+0x2dc82)<br>
#7 0x0000000001d2b2a9 (opt+0x1d2b2a9)<br>
#8 0x00007fb281efebc2 _GLOBAL__sub_I_CommandLine.cpp <br>
(/home/qwert/projects/ext/projects/cmake/llvm/6.0.0/lib/TestPass.so+0x28bc2)<br>
#9 0x00007fb28343c6ba (/lib64/ld-linux-x86-64.so.2+0x106ba)<br>
#10 0x00007fb28343c7cb (/lib64/ld-linux-x86-64.so.2+0x107cb)<br>
#11 0x00007fb2834418e2 (/lib64/ld-linux-x86-64.so.2+0x158e2)<br>
#12 0x00007fb28343c564 (/lib64/ld-linux-x86-64.so.2+0x10564)<br>
#13 0x00007fb283440da9 (/lib64/ld-linux-x86-64.so.2+0x14da9)<br>
#14 0x00007fb282e03f09 __asprintf (/lib/x86_64-linux-gnu/libdl.so.2+0xf09)<br>
#15 0x00007fb28343c564 (/lib64/ld-linux-x86-64.so.2+0x10564)<br>
#16 0x00007fb282e04571 (/lib/x86_64-linux-gnu/libdl.so.2+0x1571)<br>
#17 0x00007fb282e03fa1 dlopen (/lib/x86_64-linux-gnu/libdl.so.2+0xfa1)<br>
#18 0x0000000001d7b88b (opt+0x1d7b88b)<br>
#19 0x0000000001d44de9 (opt+0x1d44de9)<br>
#20 0x000000000069f0b4 (opt+0x69f0b4)<br>
#21 0x0000000001d35a91 (opt+0x1d35a91)<br>
#22 0x0000000001d2e3b9 (opt+0x1d2e3b9)<br>
#23 0x00000000006958b4 (opt+0x6958b4)<br>
#24 0x00007fb2821b8830 __libc_start_main <br>
(/lib/x86_64-linux-gnu/libc.so.6+0x20830)<br>
#25 0x0000000000686be9 (opt+0x686be9)<br>
Stack dump:<br>
0. Program arguments: opt -load <br>
/home/maliusarth/projects/ext/projects/cmake/llvm/6.0.0/lib/TestPass.so <br>
-testPass test.cpp<br>
Aborted<br>
<br>
<br>
in my cmakelists.txt I have the following:<br>
<br>
set(CMAKE_BUILD_TYPE Debug)<br>
<br>
set(LLVM_LINK_COMPONENTS<br>
Core # narrowed it down to this<br>
BinaryFormat<br>
Support<br>
Demangle<br>
)<br>
<br>
add_llvm_loadable_module( TestPass<br>
TestPass.cpp<br>
<br>
DEPENDS<br>
intrinsics_gen<br>
PLUGIN_TOOL<br>
opt<br>
)<br>
<br>
in my cpp I have this:<br>
<br>
#include "llvm/IR/Constants.h"<br>
#include "llvm/IR/Function.h"<br>
#include "llvm/IR/Module.h"<br>
#include "llvm/IR/PassManager.h"<br>
#include "llvm/Support/raw_ostream.h"<br>
#include "llvm/Support/CommandLine.h"<br>
<br>
#include <string><br>
<br>
namespace<br>
{<br>
// Apply a custom category to all command-line options so that they are the<br>
// only ones displayed.<br>
static llvm::cl::OptionCategory testCategory("testPass Options");<br>
<br>
static llvm::cl::opt<std::string><br>
testOpt("testOpt", llvm::cl::desc("testOpt"),<br>
llvm::cl::value_desc("test pass opt"), llvm::cl::cat(testCategory));<br>
}<br>
<br>
namespace test<br>
{<br>
char TestPass::ID = 0;<br>
<br>
static ::llvm::RegisterPass<test::TestPass><br>
X("testPass", "test pass", false /* Only looks at CFG */,<br>
false /* Analysis Pass */);<br>
}<br>
<br>
the rest of the file is more or less straight out of the Hello example.<br>
<br>
I'm working with this llvm version <br>
<a href="http://llvm.org/svn/llvm-project/llvm/tags/RELEASE_600/final" rel="noreferrer" target="_blank">http://llvm.org/svn/llvm-project/llvm/tags/RELEASE_600/final</a><br>
<br>
I'd appreciate any help on this issue.<br>
<br>
Viktor<br>
<br>
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</blockquote></div>