ld error on macOS

[dmeoli]

hello,

I wrote this bash script to install coin on Linux os:

  // Install COIN-OR CoinUtils and Osi/Clp
  echo "Installing COIN-OR CoinUtils and Osi/Clp..."
  if [ "$HAS_SUDO" -eq 1 ]; then
    apt-get install -y -q coinor-libcoinutils-dev libbz2-dev liblapack-dev libopenblas-dev
  fi
  CoinOr_ROOT="${INSTALL_ROOT}/coin-or"
  if [ ! -d "$CoinOr_ROOT" ]; then
    cd "$INSTALL_ROOT"
    curl -O https://raw.githubusercontent.com/coin-or/coinbrew/master/coinbrew
    chmod u+x coinbrew
    # Build CoinUtils
    ./coinbrew build CoinUtils --latest-release --skip-dependencies --prefix="$CoinOr_ROOT" --tests=none
    # Build Osi with or without CPLEX
    osi_build_flags=(
      "--latest-release"
      "--skip-dependencies"
      "--prefix=$CoinOr_ROOT"
      "--tests=none"
    )
    if [ "$install_cplex" -eq 0 ]; then
      osi_build_flags+=("--without-cplex")
    else
      osi_build_flags+=(
        "--with-cplex"
        "--with-cplex-lib=-L${CPLEX_ROOT}/cplex/lib/x86-64_linux/static_pic -lcplex -lpthread -lm"
        "--with-cplex-incdir=${CPLEX_ROOT}/cplex/include/ilcplex"
      )
    fi
    # Build Osi with or without Gurobi
    if [ "$install_gurobi" -eq 0 ]; then
      osi_build_flags+=("--without-gurobi")
    else
      osi_build_flags+=(
        "--with-gurobi"
        "--with-gurobi-lib=-L${GUROBI_ROOT}/linux64/lib -lgurobi100"
        "--with-gurobi-incdir=${GUROBI_ROOT}/linux64/include"
      )
    fi
    ./coinbrew build Osi "${osi_build_flags[@]}"
    # Build Clp
    ./coinbrew build Clp --latest-release --skip-dependencies --prefix="$CoinOr_ROOT" --tests=none
    rm -Rf coinbrew build CoinUtils Osi Clp
    export LD_LIBRARY_PATH="${LD_LIBRARY_PATH}:${CoinOr_ROOT}/lib"
    if [ "$HAS_SUDO" -eq 1 ]; then
      sh -c "echo '${CoinOr_ROOT}/lib' > /etc/ld.so.conf.d/coin-or.conf"
      ldconfig
    fi
  else
    echo "COIN-OR already installed."
  fi

and this perfectly works, then I tried to adapt this one for macOS:

  // Install COIN-OR CoinUtils and Osi/Clp
  echo "Installing COIN-OR CoinUtils and Osi/Clp..."
  CoinOr_ROOT="${INSTALL_ROOT}/coin-or"
  if [ ! -d "$CoinOr_ROOT" ]; then
    brew install coinutils lapack openblas
    cd "$INSTALL_ROOT"
    curl -O https://raw.githubusercontent.com/coin-or/coinbrew/master/coinbrew
    chmod u+x coinbrew
    # Build CoinUtils
    ./coinbrew fetch CoinUtils --no-prompt
    # Build Osi with or without CPLEX
    osi_build_flags=(
      "--prefix=$CoinOr_ROOT"
      "--no-prompt"
      "--tests=none"
    )
    if [ "$install_cplex" -eq 0 ]; then
      osi_build_flags+=("--without-cplex")
    else
      osi_build_flags+=(
        "--with-cplex"
        "--with-cplex-lib=-L${CPLEX_ROOT}/cplex/lib/x86-64_osx/static_pic -lcplex -lm"
        "--disable-cplex-libcheck"
        "--with-cplex-incdir=${CPLEX_ROOT}/cplex/include/ilcplex"
      )
    fi
    # Build Osi with or without Gurobi
    if [ "$install_gurobi" -eq 0 ]; then
      osi_build_flags+=("--without-gurobi")
    else
      osi_build_flags+=(
        "--with-gurobi"
        "--with-gurobi-lib=-L${GUROBI_ROOT}/macos_universal2/lib -lgurobi100"
        "--disable-gurobi-libcheck"
        "--with-gurobi-incdir=${GUROBI_ROOT}/macos_universal2/include"
      )
    fi
    ./coinbrew build Osi "${osi_build_flags[@]}"
    # Build Clp
    ./coinbrew build Clp --prefix="$CoinOr_ROOT" --tests=none
    rm -Rf coinbrew build CoinUtils Osi Clp
    export DYLD_LIBRARY_PATH="${DYLD_LIBRARY_PATH}:${CoinOr_ROOT}/lib"
  else
    echo "COIN-OR already installed."
  fi

but I am obtaining this error:

. . .

OsiCpxSolverInterface::resolve() in libOsiCpx.1.13.11.dylib-master.o
OsiCpxSolverInterface::resolve() in libOsiCpx.1.13.11.dylib-master.o
OsiCpxSolverInterface::resolve() in libOsiCpx.1.13.11.dylib-master.o
...
"_CPXsolninfo", referenced from:
OsiCpxSolverInterface::getColSolution() const in libOsiCpx.1.13.11.dylib-master.o
OsiCpxSolverInterface::getColSolution() const in libOsiCpx.1.13.11.dylib-master.o
OsiCpxSolverInterface::getRowPrice() const in libOsiCpx.1.13.11.dylib-master.o
OsiCpxSolverInterface::getReducedCost() const in libOsiCpx.1.13.11.dylib-master.o
OsiCpxSolverInterface::getRowActivity() const in libOsiCpx.1.13.11.dylib-master.o
OsiCpxSolverInterface::getObjValue() const in libOsiCpx.1.13.11.dylib-master.o
OsiCpxSolverInterface::getIterationCount() const in libOsiCpx.1.13.11.dylib-master.o
...
"_CPXwriteprob", referenced from:
OsiCpxSolverInterface::writeMps(char const*, char const*, double) const in libOsiCpx.1.13.11.dylib-master.o
ld: symbol(s) not found for architecture arm64
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
make[1]: *** [libOsiCpx.la] Error 1
make: *** [all-recursive] Error 1

does anyone help me to understand what am I wrong?

[svigerske]

You build for arm64, but try to link a CPLEX library for x86_64. Replace x86-64_osx.

[mapgccv]

Hello there, I have a question that is loosely related to this: is it possible to obtain universal binaries for Cbc using coinbrew?
I'm not using CPLEX or Gurobi, i'm relying on a default CBC build using coinbrew.

I have tried by specifying the architectures as CXX/linker additional parameters (e.g.:

export CFLAGS="-arch x86_64 -arch arm64"
export CXXFLAGS="-arch x86_64 -arch arm64"
export LDFLAGS="-arch x86_64 -arch arm64"

but I get a lot of linker errors of the kind:

Undefined symbols for architecture x86_64:
  "ClpMain0(ClpSimplex*)", referenced from:
      _main in ClpMain.o

Note that I get the same kind of errors if I try to compile only Intel binaries on an ARM Apple (by specifying only x86_64 in the flags above), so I believe i might be doing something wrong.

I'd appreciate any hint/insight, and I apologize if I didn't post this in the correct place.