Hi list,
curious about these opcodes:
faustaudio   , 
faustcompile   , I'm
trying to build csound with

cmake -DBUILD_FAUST_OPCODES=1 ../csound-develop/

but I get this:

-- LLVM_FOUND="0", so disabling BUILD_FAUST_OPCODES
-- FAUST_LIBRARY="FAUST_LIBRARY-NOTFOUND", so disabling BUILD_FAUST_OPCODES

despite the fact that llvm-3.0, llvm-3.0-dev and FAUST Version 0.9.62 are
installed on my machine.
Any help appreciated for an ubuntu installation...
Thanks



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You need faust from the faust2 git branch first. Then we can look at why the opcodes are not building.

Victor Lazzarini
Dean of Arts, Celtic Studies, and Philosophy
Maynooth University
Ireland

> On 10 Jun 2015, at 01:12, ebmtranceboy  wrote:
> 
> Hi list,
> curious about these opcodes:
> faustaudio   , 
> faustcompile   , I'm
> trying to build csound with
> 
> cmake -DBUILD_FAUST_OPCODES=1 ../csound-develop/
> 
> but I get this:
> 
> -- LLVM_FOUND="0", so disabling BUILD_FAUST_OPCODES
> -- FAUST_LIBRARY="FAUST_LIBRARY-NOTFOUND", so disabling BUILD_FAUST_OPCODES
> 
> despite the fact that llvm-3.0, llvm-3.0-dev and FAUST Version 0.9.62 are
> installed on my machine.
> Any help appreciated for an ubuntu installation...
> Thanks
> 
> 
> 
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If you're going to use faust2, you're also going to need llvm/clang 3.1 or higher.

Thanks Victor and Paul,
I now have llvm-clang 3.4 and Faust 2.0.a33 installed and I have a
LLVM-Config.cmake in the /usr/share/llvm-3.4/cmake/ folder.
How do I tell cmake to find it and also to find faust ?



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Good question. I would need to fiddle about a bit to find out. I will look at CMakeFiles.txt tomorrow to see what I can find out. With the  llvm config in place, cmake should in theory find it.

Victor Lazzarini
Dean of Arts, Celtic Studies, and Philosophy
Maynooth University
Ireland

> On 10 Jun 2015, at 20:18, ebmtranceboy  wrote:
> 
> Thanks Victor and Paul,
> I now have llvm-clang 3.4 and Faust 2.0.a33 installed and I have a
> LLVM-Config.cmake in the /usr/share/llvm-3.4/cmake/ folder.
> How do I tell cmake to find it and also to find faust ?
> 
> 
> 
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Today, I've copied  this
  
file into the cmake-3.3.0/share/cmake-3.3/Modules directory and 

cmake -DBUILD_FAUST_OPCODES=1 -DFAUST_LIBRARY=pathTo/libfaust.a
../csound-develop/

emitted no complain.

Now, after make -j1, I get
[...]
Scanning dependencies of target fareygen
[ 57%] Building C object Opcodes/CMakeFiles/fareygen.dir/fareygen.c.o
[ 58%] Linking C shared module ../libfareygen.so
[ 58%] Built target fareygen
Opcodes/CMakeFiles/faustcsound.dir/build.make:94: *** le schéma de cible ne
contient pas « % ». Arrêt.
make[1]: *** [Opcodes/CMakeFiles/faustcsound.dir/all] Erreur 2
make: *** [all] Erreur 2




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Looks like the makefile is not being generated properly. Not sure what the error message in
French corresponds to in English, so I can’t tell what the problem might be.
I’ve never seen any "target scheme” in make error messages. Would it be “No Rule to make target …”,
but it normally lists the target name.
What is in line 94 of build.cmake?

========================
Dr Victor Lazzarini
Dean of Arts, Celtic Studies and Philosophy,
Maynooth University,
Maynooth, Co Kildare, Ireland
Tel: 00 353 7086936
Fax: 00 353 1 7086952 

> On 11 Jun 2015, at 10:05, ebmtranceboy  wrote:
> 
> Today, I've copied  this
>   
> file into the cmake-3.3.0/share/cmake-3.3/Modules directory and 
> 
> cmake -DBUILD_FAUST_OPCODES=1 -DFAUST_LIBRARY=pathTo/libfaust.a
> ../csound-develop/
> 
> emitted no complain.
> 
> Now, after make -j1, I get
> [...]
> Scanning dependencies of target fareygen
> [ 57%] Building C object Opcodes/CMakeFiles/fareygen.dir/fareygen.c.o
> [ 58%] Linking C shared module ../libfareygen.so
> [ 58%] Built target fareygen
> Opcodes/CMakeFiles/faustcsound.dir/build.make:94: *** le schéma de cible ne
> contient pas « % ». Arrêt.
> make[1]: *** [Opcodes/CMakeFiles/faustcsound.dir/all] Erreur 2
> make: *** [all] Erreur 2
> 
> 
> 
> 
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Ok my bad, there is no need for an extra file in the cmake/Modules 
directory.

Instead, one must verify the name of the config file is _exactly_
LLVMConfig.cmake _or_ llvm-config.cmake. It took me the whole morning to
realize they called mine LLVM-Config.cmake for some reason :( 

Then, the cmake command is
cmake -DLLVM_DIR=pathToThatDamnedFileWithoutTheFileNameItself
-DBUILD_FAUST_OPCODES=1 -DFAUST_LIBRARY=pathTo/libfaust.a ../csound-develop/

Now, 

[ 58%] Linking CXX shared module ../libfaustcsound.so
/usr/bin/ld: cannot find -lLLVMHexagonAsmPrinter
/usr/bin/ld: cannot find -lLLVMJIT
collect2: error: ld returned 1 exit status
make[2]: *** [libfaustcsound.so] Erreur 1
make[1]: *** [Opcodes/CMakeFiles/faustcsound.dir/all] Erreur 2
make: *** [all] Erreur 2






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... and with an extra -DCMAKE_MODULE_LINKER_FLAGS="-L/usr/lib/llvm-3.4/lib"
in the cmake command, make gives me:

[...]
Scanning dependencies of target faustcsound
[ 54%] Building CXX object Opcodes/CMakeFiles/faustcsound.dir/faustgen.cpp.o
[ 54%] Linking CXX shared module ../libfaustcsound.so
[ 54%] Built target faustcsound
[...]
[100%] Built target translations

then, make install:

[...]
[ 54%] Built target faustcsound
[...]
Building translations
[100%] Built target translations
Linking C shared library CMakeFiles/CMakeRelink.dir/libcsound64.so
Linking C shared module CMakeFiles/CMakeRelink.dir/libdssi4cs.so
Linking CXX shared module CMakeFiles/CMakeRelink.dir/libfaustcsound.so
[...]
Install the project...
-- Install configuration: ""
-- Installing: /usr/local/lib/libcsound64.so.6.0
-- Installing: /usr/local/lib/libcsound64.so
[...]
-- Installing: /usr/local/lib/csound/plugins-6.0/libfaustcsound.so
[...]

but csound -z gives me:

WARNING: could not open library
'/usr/local/lib/csound/plugins-6.0/libfaustcsound.so'
(/usr/local/lib/csound/plugins-6.0/libfaustcsound.so: undefined symbol:
setupterm)








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Well, those flags are generated by your LLVMConfig, so maybe there is a mismatch in the llvm installation?
========================
Dr Victor Lazzarini
Dean of Arts, Celtic Studies and Philosophy,
Maynooth University,
Maynooth, Co Kildare, Ireland
Tel: 00 353 7086936
Fax: 00 353 1 7086952 

> On 11 Jun 2015, at 12:24, ebmtranceboy  wrote:
> 
> Ok my bad, there is no need for an extra file in the cmake/Modules 
> directory.
> 
> Instead, one must verify the name of the config file is _exactly_
> LLVMConfig.cmake _or_ llvm-config.cmake. It took me the whole morning to
> realize they called mine LLVM-Config.cmake for some reason :( 
> 
> Then, the cmake command is
> cmake -DLLVM_DIR=pathToThatDamnedFileWithoutTheFileNameItself
> -DBUILD_FAUST_OPCODES=1 -DFAUST_LIBRARY=pathTo/libfaust.a ../csound-develop/
> 
> Now, 
> 
> [ 58%] Linking CXX shared module ../libfaustcsound.so
> /usr/bin/ld: cannot find -lLLVMHexagonAsmPrinter
> /usr/bin/ld: cannot find -lLLVMJIT
> collect2: error: ld returned 1 exit status
> make[2]: *** [libfaustcsound.so] Erreur 1
> make[1]: *** [Opcodes/CMakeFiles/faustcsound.dir/all] Erreur 2
> make: *** [all] Erreur 2
> 
> 
> 
> 
> 
> 
> --
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I am not sure whether it matters, but on OSX I have been using 3.3 I think.
This seems to indicate another possibility:

http://stackoverflow.com/questions/21477407/llvm-3-5-fails-to-link


========================
Dr Victor Lazzarini
Dean of Arts, Celtic Studies and Philosophy,
Maynooth University,
Maynooth, Co Kildare, Ireland
Tel: 00 353 7086936
Fax: 00 353 1 7086952 

> On 11 Jun 2015, at 14:11, ebmtranceboy  wrote:
> 
> ... and with an extra -DCMAKE_MODULE_LINKER_FLAGS="-L/usr/lib/llvm-3.4/lib"
> in the cmake command, make gives me:
> 
> [...]
> Scanning dependencies of target faustcsound
> [ 54%] Building CXX object Opcodes/CMakeFiles/faustcsound.dir/faustgen.cpp.o
> [ 54%] Linking CXX shared module ../libfaustcsound.so
> [ 54%] Built target faustcsound
> [...]
> [100%] Built target translations
> 
> then, make install:
> 
> [...]
> [ 54%] Built target faustcsound
> [...]
> Building translations
> [100%] Built target translations
> Linking C shared library CMakeFiles/CMakeRelink.dir/libcsound64.so
> Linking C shared module CMakeFiles/CMakeRelink.dir/libdssi4cs.so
> Linking CXX shared module CMakeFiles/CMakeRelink.dir/libfaustcsound.so
> [...]
> Install the project...
> -- Install configuration: ""
> -- Installing: /usr/local/lib/libcsound64.so.6.0
> -- Installing: /usr/local/lib/libcsound64.so
> [...]
> -- Installing: /usr/local/lib/csound/plugins-6.0/libfaustcsound.so
> [...]
> 
> but csound -z gives me:
> 
> WARNING: could not open library
> '/usr/local/lib/csound/plugins-6.0/libfaustcsound.so'
> (/usr/local/lib/csound/plugins-6.0/libfaustcsound.so: undefined symbol:
> setupterm)
> 
> 
> 
> 
> 
> 
> 
> 
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Indeed, all is ok with llvm-3.3.

In summary for ubuntu:

*) ensure LLVMConfig.cmake is correctly spelled in /usr/share/llvm-3.3/cmake
(or create a symbolic link with that name)

*) ensure llvm-config is correctly spelled in /usr/bin (mine was called
llvm-config-3.3!)

*) build faust2 with llvm-3.3

*) ensure cmake version > 2.8.7

*) cmake -DLLVM_DIR=/usr/share/llvm-3.3/cmake
-DCMAKE_MODULE_LINKER_FLAGS="-L/usr/lib/llvm-3.3/lib"
-DBUILD_FAUST_OPCODES=1 -DFAUST_LIBRARY=pathTo/libfaust.a ../csound-develop/

Thanks Victor



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Thanks for this. Maybe you can contribute it to the build instructions in csound github?

I remember having to fiddle with llvm versions when I first wrote the code.

Regards

Victor Lazzarini
Dean of Arts, Celtic Studies, and Philosophy
Maynooth University
Ireland

> On 11 Jun 2015, at 21:52, ebmtranceboy  wrote:
> 
> Indeed, all is ok with llvm-3.3.
> 
> In summary for ubuntu:
> 
> *) ensure LLVMConfig.cmake is correctly spelled in /usr/share/llvm-3.3/cmake
> (or create a symbolic link with that name)
> 
> *) ensure llvm-config is correctly spelled in /usr/bin (mine was called
> llvm-config-3.3!)
> 
> *) build faust2 with llvm-3.3
> 
> *) ensure cmake version > 2.8.7
> 
> *) cmake -DLLVM_DIR=/usr/share/llvm-3.3/cmake
> -DCMAKE_MODULE_LINKER_FLAGS="-L/usr/lib/llvm-3.3/lib"
> -DBUILD_FAUST_OPCODES=1 -DFAUST_LIBRARY=pathTo/libfaust.a ../csound-develop/
> 
> Thanks Victor
> 
> 
> 
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