Which distro ?

   This is a full source build...

which cmake configure line ?

Created attachment 110184 [details]
attachment-26738-0.html

cmake -DLLVM_ROOT=/home/jet/oss/llvm/build

where /home/jet/oss/llvm is svn head as of a week ago. 

    On Sunday, January 28, 2018 9:05 AM, Sergio Martins <bugzilla_noreply@kde.org> wrote:
 

 https://bugs.kde.org/show_bug.cgi?id=389473

--- Comment #3 from Sergio Martins <smartins@kde.org> ---
which cmake configure line ?

Perhaps it is a simple matter of testing the libTooling version in CMake, since the API is unstable (assuming you are expecting a particular LLVM release)...

Hello,
sitting here on Ubuntu 14.04, want to confirm problem.

Clang built from Git tonight:
t@T14:~/clazyspace/llvm$ sudo apt-get remove clang llvm
t@T14:~/clazyspace/llvm$ mkdir build
t@T14:~/clazyspace/llvm/build$ cmake -DLLVM_TARGETS_TO_BUILD=X86 -DCMAKE_BUILD_TYPE=Release ..
t@T14:~/clazyspace/llvm/build$ make -j 10
t@T14:~/clazyspace/llvm/build$ sudo make install


Same for clazy:
tamhan@TAMHAN14:~/clazyspace/$ git clone https://github.com/KDE/clazy
tamhan@TAMHAN14:~/clazyspace/clazy$ git checkout -b 1.3
Switched to a new branch '1.3'
tamhan@TAMHAN14:~/clazyspace/clazy$ cmake -DCMAKE_BUILD_TYPE=Release
tamhan@TAMHAN14:~/clazyspace/clazy$ make -j 10
tamhan@TAMHAN14:~/clazyspace/clazy$ sudo make install

Same error as the reporter

Forgot to add that changing the cmake command for clazy does not help:
tamhan@TAMHAN14:~/clazyspace/clazy$ cmake -DCMAKE_BUILD_TYPE=Release -DCLAZY_BUILD_WITH_CLANG=true
Looking for std::regex support...
old-style-connect check is disabled due to missing std::regex support
Suppressions are disabled due to missing std::regex support
CMake Error at CMakeLists.txt:271 (add_clang_library):
  Unknown CMake command "add_clang_library".


-- Configuring incomplete, errors occurred!
See also "/home/tamhan/clazyspace/clazy/CMakeFiles/CMakeOutput.log".


Version info:

tamhan@TAMHAN14:~/clazyspace/clazy$ cmake -version
cmake version 3.4.3

CMake suite maintained and supported by Kitware (kitware.com/cmake).

Can you try compiling clang/llvm with -DBUILD_SHARED_LIBS=ON ?

Rebuilding clang with -DBUILD_SHARED_LIBS=ON and then rebuilding clazy results in a slightly different error message:

: CommandLine Error: Option 'help-list' registered more than once!
fatal error: error in backend: inconsistency in registered CommandLine options
clang: error: clang frontend command failed with exit code 70 (use -v to see invocation)

Hello Folks,
do you think that using an older version of CLANG would work?

I am on an AMD octacore workstation, so recompiling code is not a big issue for me.

Tam

Sure, I'm using clang 5.0.1.
Try to stick to released versions of clang, as sometimes stuff breaks with latest release

IMO an acceptable resolution would be to add an LLVM version check ("clazy has  only been tested with versions X, Y, or Z") etc.

Hello,
just started fighting Git to get the correct version. This makes me miss SourceSafe and CVS/SVN. But I will report in again...

Hello,
sadly no change to the error. It now looks like this:
tamhan@TAMHAN14:~/Desktop/deadstuff/2018Jan/HeiseClazy/QtTypeGun2$ clazy main.cpp
: CommandLine Error: Option 'static-func-full-module-prefix' registered more than once!
fatal error: error in backend: inconsistency in registered CommandLine options
clang-5.0: error: clang frontend command failed with exit code 70 (use -v to see invocation)
clang version 5.0.1 (https://github.com/llvm-mirror/clang.git 9fc5dfce8e15fd7b3ffe657278c045ee5471d26f) (https://github.com/llvm-mirror/llvm.git 1368f4044e62cad4316da638d919a93fd3ac3fe6)

I've tested clazy with llvm 5.0, 6.0 and 7.0 build from source and it's working fine when using shared libraries, my llvm cmake line is:

cmake -DCMAKE_INSTALL_PREFIX=/data/prefix/clang-7.0 -DLLVM_INCLUDE_EXAMPLES=OFF -DLLVM_TARGETS_TO_BUILD="X86" -DBUILD_SHARED_LIBS=ON -DCMAKE_BUILD_TYPE=Release ..

When building clazy be sure to not build it with clang-7.0, but with gcc, or with clang < 7.0. It appears clang-7.0 is generating buggy code which crashes the compiler

Also investigated the static-build, what's happening is that too many libs are being linked, so some options are duplicated, which gives this error

Hello,
thank you so much for talking back. Sadly, the program still fails:

tamhan@TAMHAN14:~/clazyspace/clazy$ clazy main.cpp 
: CommandLine Error: Option 'static-func-full-module-prefix' registered more than once!
fatal error: error in backend: inconsistency in registered CommandLine options
clang-6.0: error: clang frontend command failed with exit code 70 (use -v to see invocation)


My command sequence for building is like this:

sudo apt-get remove cmake
wget http://www.cmake.org/files/v3.11/cmake-3.11.0.tar.gz 
tar -xvzf cmake-3.11.0.tar.gz 
cd cmake-3.11.0/ 
./configure 
make  -j 10
sudo make install 
cd ..


git clone https://github.com/llvm-mirror/llvm.git
cd llvm/
git checkout remotes/origin/release_60
cd tools
git clone https://github.com/llvm-mirror/clang.git
cd clang
git checkout remotes/origin/release_60
cd ..
cd ..
cd projects
git clone https://github.com/llvm-mirror/compiler-rt.git
cd ..
sudo apt-get remove clang llvm
mkdir build
cd build
cmake -DLLVM_TARGETS_TO_BUILD=X86 -DCMAKE_BUILD_TYPE=Release ..
make -j 10
sudo make install
cd ..
cd ..



git clone https://github.com/KDE/clazy
cd clazy
cmake -DCMAKE_BUILD_TYPE=Release

OR

cmake -DCMAKE_INSTALL_PREFIX=/data/prefix/clang-6.0 -DLLVM_INCLUDE_EXAMPLES=OFF -DLLVM_TARGETS_TO_BUILD="X86" -DBUILD_SHARED_LIBS=ON -DCMAKE_BUILD_TYPE=Release
make -j 10
sudo make install

That error is when using the static one, what's the actual error when using -DBUILD_SHARED_LIBS=ON ?

Also please paste the cmake output when building clazy itself with the dynamically linked llvm

Created attachment 111778 [details]
Compile process output

Hello,
thank you so much for your swift reply.

I tried both compile variants and got the same error. The compile process log is attached as a Attachment!

Tam

Interesting, looks like your LLVM is dynamic, but your clang is static:

 LLVM libraries: -lLLVMLTO -lLLVMPasses -lLLVMObjCARCOpts -lLLVMSymbolize -lLLVMDebugInfoPDB -lLLVMDebugInfoDWARF -lLLVMFuzzMutate -lLLVMTableGen -lLLVMDlltoolDriver -lLLVMLineEditor -lLLVMOrcJIT -lLLVMCoverage -lLLVMMIRParser -lLLVMObjectYAML -lLLVMLibDriver -lLLVMOption -lLLVMWindowsManifest -lLLVMX86Disassembler -lLLVMX86AsmParser -lLLVMX86CodeGen -lLLVMGlobalISel -lLLVMSelectionDAG -lLLVMAsmPrinter -lLLVMDebugInfoCodeView -lLLVMDebugInfoMSF -lLLVMX86Desc -lLLVMMCDisassembler -lLLVMX86Info -lLLVMX86AsmPrinter -lLLVMX86Utils -lLLVMMCJIT -lLLVMInterpreter -lLLVMExecutionEngine -lLLVMRuntimeDyld -lLLVMCodeGen -lLLVMTarget -lLLVMCoroutines -lLLVMipo -lLLVMInstrumentation -lLLVMVectorize -lLLVMScalarOpts -lLLVMLinker -lLLVMIRReader -lLLVMAsmParser -lLLVMInstCombine -lLLVMTransformUtils -lLLVMBitWriter -lLLVMAnalysis -lLLVMProfileData -lLLVMObject -lLLVMMCParser -lLLVMMC -lLLVMBitReader -lLLVMCore -lLLVMBinaryFormat -lLLVMSupport -lLLVMDemangle
--   LLVM System libraries: -lz -lrt -ldl -ltinfo -lpthread -lm
-- Found Clang (LLVM version: 6.0.0)
--   Include dirs:       /usr/local/include
--   Clang libraries:    /usr/local/lib/libclangFrontend.a;/usr/local/lib/libclangDriver.a;/usr/local/lib/libclangCodeGen.a;/usr/local/lib/libclangSema.a;/usr/local/lib/libclangAnalysis.a;/usr/local/lib/libclangRewriteFrontend.a;

Both must be dynamic

Hello Sergio,
thank you so much for your swift reply and the continuous willingness to help me.

This is the build sequence I use:
echo "Now working on LLVM"
git clone https://github.com/llvm-mirror/llvm.git
cd llvm/
git checkout remotes/origin/release_60
cd tools
git clone https://github.com/llvm-mirror/clang.git
cd clang
git checkout remotes/origin/release_60
cd ..
cd ..
cd projects
git clone https://github.com/llvm-mirror/compiler-rt.git
cd ..
sudo apt-get remove clang llvm
mkdir build
cd build
cmake -DLLVM_TARGETS_TO_BUILD=X86 -DCMAKE_BUILD_TYPE=Release .. 
make -j 10
sudo make install
cd ..
cd ..


Can you please tell me what to change? I am sorry, but I am a bit at my wit's end here at the moment.

Hello Sergio,
just to let you know - I am now running two compiles as per the following instructions:
BUILD_SHARED_LIBS:BOOL

    Flag indicating if each LLVM component (e.g. Support) is built as a shared library (ON) or as a static library (OFF). Its default value is OFF. On Windows, shared libraries may be used when building with MinGW, including mingw-w64, but not when building with the Microsoft toolchain.

    Note

    BUILD_SHARED_LIBS is only recommended for use by LLVM developers. If you want to build LLVM as a shared library, you should use the LLVM_BUILD_LLVM_DYLIB optio

I expect to know more in a few hours...octacore AMD CPU hard at work.

Hello,
first, I tried this:
. . .
cd build
cmake -DLLVM_TARGETS_TO_BUILD=X86 -DLLVM_BUILD_LLVM_DYLIB=ON -DCMAKE_BUILD_TYPE=Release .. 
make -j 10
. . .

To get the build result in the file llvmbuildllvmdylib.txt 

And it still didnt work out:
tamhan@TAMHAN14:~/clazyspace$ clazy main.cpp 
: CommandLine Error: Option 'static-func-full-module-prefix' registered more than once!
fatal error: error in backend: inconsistency in registered CommandLine options
clang-6.0: error: clang frontend command failed with exit code 70 (use -v to see invocation)

Created attachment 111805 [details]
LLVM build one

Hi, This last attachment still shows that clang is built statically:
Clang libraries:    /usr/local/lib/libclangFrontend.a;

note the .a file, instead of .so.

Using -DBUILD_SHARED_LIBS=ON should make both llvm and clang use .so files

Hello Sergio,
thank you so much. Sadly, this still does not do it. Now I used the following configuration:
cd build
cmake -DLLVM_TARGETS_TO_BUILD=X86 -DBUILD_SHARED_LIBS=ON -DCMAKE_BUILD_TYPE=Release .. 
make -j 10

Sadly, the error remains. I will upload the build log in a second.

Created attachment 111807 [details]
Second LLVM build attempt

That's almost perfect, I would just suggest that you install clazy to LLVM's prefix, instead of /data/prefix/clang-6.0/. Seems to be /usr/local/

Now, when running clazy it just needs to find it's ClangLazy.so library, you can do it via export LD_LIBRARY_PATH=/usr/local/lib/:$LD_LIBRARY_PATH, or wherever it is

Hello Sergio,
thank you so much for your swift response, and sorry for being slow - I was overworked. 

But you now you catch me out of my league. Should I modify the compile, or simply sent the environment variable before invoking clazy?

Tam

Before invoking clazy, it seems to be a runtime problem now

Hello Sergio,
sorry for being away so long, and thank you for your help so far - I was held up by another customer. Now, I got back to the problem. 


Now, I tried this:
tamhan@TAMHAN14:~/clazyspace$ export LD_LIBRARY_PATH=/data/prefix/clang-6.0/lib/:$LD_LIBRARY_PATH
tamhan@TAMHAN14:~/clazyspace$ clazy main.cpp 
: CommandLine Error: Option 'static-func-full-module-prefix' registered more than once!
fatal error: error in backend: inconsistency in registered CommandLine options
clang-6.0: error: clang frontend command failed with exit code 70 (use -v to see invocation)

Very oddly, the library is right there:
tamhan@TAMHAN14:/data/prefix/clang-6.0/lib$ ls
ClangLazy.so

And the variable points at it:
tamhan@TAMHAN14:/data/prefix/clang-6.0/lib$ echo $LD_LIBRARY_PATH 
/data/prefix/clang-6.0/lib/:

These commits fix the "CommandLine Error: Option 'help-list' registered more than once!"

commit c650de49e3bdcb6f2116c0a0f76e1924615f48f6 (origin/1.3, 1.3)
Author: Sergio Martins <iamsergio@gmail.com>
Date:   Thu Sep 20 15:05:33 2018 +0100

    Require cmake 3.3 as minimum
    
    This amends the previous commit.
    Linking full path needs 3.3 as minimum, probably so CMP0060 is enabled.

commit 53317a88b3930ad6b3a26b8e0df021a485fef802
Author: Sergio Martins <smartins@kde.org>
Date:   Wed Sep 19 23:07:07 2018 +0100

    Link against full paths instead of -lfoo
    
    Fixes clazy linking against system libraries when it was told to use
    a LLVM from prefix

Hello,
sadly, the error still occurs:
tamhan@TAMHAN14:~/clazyspace$ clazy main.cpp 
: CommandLine Error: Option 'static-func-full-module-prefix' registered more than once!
fatal error: error in backend: inconsistency in registered CommandLine options
clang-6.0: error: clang frontend command failed with exit code 70 (use -v to see invocation)
clang version 6.0.1 (https://github.com/llvm-mirror/clang.git 2f27999df400d17b33cdd412fdd606a88208dfcc) (https://github.com/llvm-mirror/llvm.git 5136df4d089a086b70d452160ad5451861269498)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/bin
clang-6.0: note: diagnostic msg: PLEASE submit a bug report to http://llvm.org/bugs/ and include the crash backtrace, preprocessed source, and associated run script.
clang-6.0: note: diagnostic msg: Error generating preprocessed source(s).

Hello,
and here is the verbose output:
tamhan@TAMHAN14:~/clazyspace$ clazy  main.cpp -v
clang version 6.0.1 (https://github.com/llvm-mirror/clang.git 2f27999df400d17b33cdd412fdd606a88208dfcc) (https://github.com/llvm-mirror/llvm.git 5136df4d089a086b70d452160ad5451861269498)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/bin
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.8
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.8.5
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.9
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.9.4
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/7
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/7.3.0
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8.5
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9.4
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6.4.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.3.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6.4.0
Candidate multilib: .;@m64
Selected multilib: .;@m64
 "/usr/local/bin/clang-6.0" -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -mrelax-all -disable-free -disable-llvm-verifier -discard-value-names -main-file-name main.cpp -mrelocation-model static -mthread-model posix -mdisable-fp-elim -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -dwarf-column-info -debugger-tuning=gdb -v -resource-dir /usr/local/lib/clang/6.0.1 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.4.0/../../../../include/c++/6.4.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.4.0/../../../../include/x86_64-linux-gnu/c++/6.4.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.4.0/../../../../include/x86_64-linux-gnu/c++/6.4.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.4.0/../../../../include/c++/6.4.0/backward -internal-isystem /usr/local/include -internal-isystem /usr/local/lib/clang/6.0.1/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -fdeprecated-macro -fdebug-compilation-dir /home/tamhan/clazyspace -ferror-limit 19 -fmessage-length 171 -fobjc-runtime=gcc -fcxx-exceptions -fexceptions -fdiagnostics-show-option -fcolor-diagnostics -load ClangLazy.so -add-plugin clang-lazy -o /tmp/main-b2b500.o -x c++ main.cpp
: CommandLine Error: Option 'static-func-full-module-prefix' registered more than once!
fatal error: error in backend: inconsistency in registered CommandLine options
clang-6.0: error: clang frontend command failed with exit code 70 (use -v to see invocation)
clang version 6.0.1 (https://github.com/llvm-mirror/clang.git 2f27999df400d17b33cdd412fdd606a88208dfcc) (https://github.com/llvm-mirror/llvm.git 5136df4d089a086b70d452160ad5451861269498)

Git commit 39005c8e2d844c234efa52fc20b350f5fb5812c3 by Sergio Martins.
Committed on 16/11/2018 at 12:42.
Pushed by smartins into branch '1.4'.

README: Mention how to workaround "option foo registered more than once"

M  +7    -1    README.md

https://commits.kde.org/clazy/39005c8e2d844c234efa52fc20b350f5fb5812c3

This is now be fixed in latest 1.4 and master branches.

If your LLVM is static (*.a files instead of .so) you'll need to build clazy with  -DLINK_TO_LLVM=OFF , if that doesn't work for you then there's no other solution than using .so files (dynamically linked LLVM)

Hello,
sadly, it still does not fully work. I ran the build script with the contents I will post soon, and got this:
root@TAMHAN14:~/clazyspace# touch x.cpp
root@TAMHAN14:~/clazyspace# clazy x.cpp -v
clang version 7.0.1 (https://github.com/llvm-mirror/clang.git 4519e2637fcc4bf6e3049a0a80e6a5e7b97667cb) (https://github.com/llvm-mirror/llvm.git cd98f42d0747826062fc3d2d2fad383aedf58dd6)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/bin
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.8
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.8.5
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.9
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.9.4
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/7
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/7.4.0
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8.5
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9.4
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6.5.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.4.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6.5.0
Candidate multilib: .;@m64
Selected multilib: .;@m64
 "/usr/local/bin/clang-7" -cc1 -triple x86_64-unknown-linux-gnu -emit-obj -mrelax-all -disable-free -disable-llvm-verifier -discard-value-names -main-file-name x.cpp -mrelocation-model static -mthread-model posix -mdisable-fp-elim -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -dwarf-column-info -debugger-tuning=gdb -v -resource-dir /usr/local/lib/clang/7.0.1 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.5.0/../../../../include/c++/6.5.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.5.0/../../../../include/x86_64-linux-gnu/c++/6.5.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.5.0/../../../../include/x86_64-linux-gnu/c++/6.5.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.5.0/../../../../include/c++/6.5.0/backward -internal-isystem /usr/local/include -internal-isystem /usr/local/lib/clang/7.0.1/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -fdeprecated-macro -fdebug-compilation-dir /home/tamhan/clazyspace -ferror-limit 19 -fmessage-length 205 -fobjc-runtime=gcc -fcxx-exceptions -fexceptions -fdiagnostics-show-option -fcolor-diagnostics -load ClazyPlugin.so -add-plugin clazy -o /tmp/x-8ff6e6.o -x c++ x.cpp -faddrsig
clang -cc1 version 7.0.1 based upon LLVM 7.0.1 default target x86_64-unknown-linux-gnu
ignoring nonexistent directory "/include"
ignoring duplicate directory "/usr/lib/gcc/x86_64-linux-gnu/6.5.0/../../../../include/x86_64-linux-gnu/c++/6.5.0"
#include "..." search starts here:
#include <...> search starts here:
 /usr/lib/gcc/x86_64-linux-gnu/6.5.0/../../../../include/c++/6.5.0
 /usr/lib/gcc/x86_64-linux-gnu/6.5.0/../../../../include/x86_64-linux-gnu/c++/6.5.0
 /usr/lib/gcc/x86_64-linux-gnu/6.5.0/../../../../include/c++/6.5.0/backward
 /usr/local/include
 /usr/local/lib/clang/7.0.1/include
 /usr/include/x86_64-linux-gnu
 /usr/include
End of search list.
 "/usr/bin/ld" -z relro --hash-style=gnu --eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2 -o a.out /usr/lib/gcc/x86_64-linux-gnu/6.5.0/../../../x86_64-linux-gnu/crt1.o /usr/lib/gcc/x86_64-linux-gnu/6.5.0/../../../x86_64-linux-gnu/crti.o /usr/lib/gcc/x86_64-linux-gnu/6.5.0/crtbegin.o -L/usr/lib/gcc/x86_64-linux-gnu/6.5.0 -L/usr/lib/gcc/x86_64-linux-gnu/6.5.0/../../../x86_64-linux-gnu -L/lib/x86_64-linux-gnu -L/lib/../lib64 -L/usr/lib/x86_64-linux-gnu -L/usr/lib/gcc/x86_64-linux-gnu/6.5.0/../../.. -L/usr/local/bin/../lib -L/lib -L/usr/lib /tmp/x-8ff6e6.o -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc /usr/lib/gcc/x86_64-linux-gnu/6.5.0/crtend.o /usr/lib/gcc/x86_64-linux-gnu/6.5.0/../../../x86_64-linux-gnu/crtn.o
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 0 has invalid symbol index 11
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 1 has invalid symbol index 12
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 2 has invalid symbol index 2
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 3 has invalid symbol index 2
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 4 has invalid symbol index 11
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 5 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 6 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 7 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 8 has invalid symbol index 12
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 9 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 10 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 11 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 12 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 13 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 14 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 15 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 16 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 17 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 18 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_info): relocation 19 has invalid symbol index 21
/usr/bin/ld: /usr/lib/debug/usr/lib/x86_64-linux-gnu/crt1.o(.debug_line): relocation 0 has invalid symbol index 2
/usr/lib/gcc/x86_64-linux-gnu/6.5.0/../../../x86_64-linux-gnu/crt1.o: In function `_start':
(.text+0x20): undefined reference to `main'
clang-7: error: linker command failed with exit code 1 (use -v to see invocation)



Oddly, it looks like the standalone version seems to work:
root@TAMHAN14:~/clazyspace# clazy-standalone main.cpp 
Error while trying to load a compilation database:
Could not auto-detect compilation database for file "main.cpp"
No compilation database found in /home/tamhan/clazyspace or any parent directory
fixed-compilation-database: Error while opening fixed database: No such file or directory
json-compilation-database: Error while opening JSON database: No such file or directory
Running without flags.

Hello,
and here is the build script I used:

echo "Now working on CMAKE"
sudo apt-get remove cmake
wget http://www.cmake.org/files/v3.11/cmake-3.11.0.tar.gz 
tar -xvzf cmake-3.11.0.tar.gz 
cd cmake-3.11.0/ 
./configure 
make  -j 10
sudo make install 
cd ..


echo "Now working on LLVM"
git clone https://github.com/llvm-mirror/llvm.git
cd llvm/
git checkout remotes/origin/release_70
cd tools
git clone https://github.com/llvm-mirror/clang.git
cd clang
git checkout remotes/origin/release_70
cd ..
cd ..
cd projects
git clone https://github.com/llvm-mirror/compiler-rt.git
cd ..
sudo apt-get remove clang llvm
mkdir build
cd build
cmake -DLLVM_TARGETS_TO_BUILD=X86 -DBUILD_SHARED_LIBS=ON -DCMAKE_BUILD_TYPE=Release .. 
make -j 10
sudo make install
cd ..
cd ..


echo "Now working on CLAZY"

git clone https://github.com/KDE/clazy
cd clazy
cmake -DLLVM_INCLUDE_EXAMPLES=OFF -DLINK_CLAZY_TO_LLVM=OFF -DLLVM_TARGETS_TO_BUILD="X86" -DBUILD_SHARED_LIBS=ON -DCMAKE_BUILD_TYPE=Release
make -j 10
sudo make install