Build libfaust with llvm using prebuilt llvm from debian packages

buildfaust.sh

#! /bin/bash

# For debian-based
# Requires mktemp and dpkg-deb

llvmroot=$(mktemp -d)

echo ${llvmroot}
pushd ${llvmroot}
wget http://ftp.de.debian.org/debian/pool/main/l/llvm-toolchain-15/llvm-15-dev_15.0.7-6_amd64.deb
dpkg-deb -x llvm-15-dev_15.0.7-6_amd64.deb .
wget http://ftp.de.debian.org/debian/pool/main/l/llvm-toolchain-15/llvm-15_15.0.7-6_amd64.deb
dpkg-deb -x llvm-15_15.0.7-6_amd64.deb .
wget http://ftp.de.debian.org/debian/pool/main/l/llvm-toolchain-15/libpolly-15-dev_15.0.7-6_amd64.deb
dpkg-deb -x libpolly-15-dev_15.0.7-6_amd64.deb .

popd
export PATH="${llvmroot}/usr/lib/llvm-15/bin:$PATH"

pushd build
cmake  -C ./backends/all.cmake . -Bbuild -DCMAKE_BUILD_TYPE=Release \
	-DCMAKE_VERBOSE_MAKEFILE=ON -DINCLUDE_DYNAMIC=ON -DINCLUDE_STATIC=ON \
	-DINCLUDE_LLVM=ON -DUSE_LLVM_CONFIG=ON \
	-DLLVM_CONFIG=${llvmroot}/usr/lib/llvm-15/bin/llvm-config \
	-DCMAKE_PREFIX_PATH=${llvmroot}/usr/lib/llvm-15/lib/cmake/llvm
cmake --build build --config Release --parallel 16

popd

CMakeLists.txt

cmake_minimum_required(VERSION 3.14)

project(faustuserprojectwithllvm)

add_executable(faustuserprojectwithllvm main.cpp)
target_compile_features(faustuserprojectwithllvm PRIVATE cxx_std_11)
  
target_link_libraries(faustuserprojectwithllvm PUBLIC 
  ${PROJECT_SOURCE_DIR}/libfaustwithllvm.a
  rt 
  dl 
  m
  /usr/lib/x86_64-linux-gnu/libz3.so
  z 
  tinfo 
  xml2)

target_include_directories(
    faustuserprojectwithllvm
    PUBLIC
    "../architecture"
)

main.cpp

// Copied from llvm-test.cpp

#include <iostream>
#include <fstream>
#include <sstream>
#include <thread>
#include <vector>

#include "faust/dsp/llvm-dsp.h"
#include "faust/audio/dummy-audio.h"
#include "faust/gui/DecoratorUI.h"
#include "faust/gui/PrintUI.h"
#include "faust/misc.h"

// To do CPU native compilation
#ifndef JIT_TARGET
#define JIT_TARGET ""
#endif

static void printList(const std::vector<std::string>& list)
{
    for (int i = 0; i < list.size(); i++) {
        std::cout << "item: " << list[i] << "\n";
    }
}

void foo()
{ 
  std::string error_msg;
  llvm_dsp_factory* factory = createDSPFactoryFromString("FaustDSP", "import(\"stdfaust.lib\");process = os.osc(440);", 0, NULL, JIT_TARGET, error_msg, -1);
  if (!factory) {
      std::cerr << "Cannot create factory : " << error_msg;
      exit(EXIT_FAILURE);
  }
  
  std::cout << "getCompileOptions " << factory->getCompileOptions() << std::endl;
  printList(factory->getLibraryList());
  printList(factory->getIncludePathnames());
  
  dsp* DSP = factory->createDSPInstance();
  if (!DSP) {
      std::cerr << "Cannot create instance "<< std::endl;
      exit(EXIT_FAILURE);
  }
  
  std::cout << "getName " << factory->getName() << std::endl;
  std::cout << "getSHAKey " << factory->getSHAKey() << std::endl;
  
  dummyaudio audio(1);
  if (!audio.init("FaustDSP", DSP)) {
      exit(EXIT_FAILURE);
  }
  
  audio.start();
  audio.stop();
  
  delete DSP;
  deleteDSPFactory(factory);
}

int main(int argc, char* argv[])
{
    std::cout << "Libfaust version : " << getCLibFaustVersion () << std::endl;
    std::cout << "getDSPMachineTarget " << getDSPMachineTarget() << std::endl;
    
    foo();
    
    return 0;
}