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Location: LEMON/LEMON-official/m4/lx_check_cplex.m4

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kpeter (Peter Kovacs)
Use XTI implementation instead of ATI in NetworkSimplex (#234) XTI (eXtended Threaded Index) is an imporved version of the widely known ATI (Augmented Threaded Index) method for storing and updating the spanning tree structure in Network Simplex algorithms. In the ATI data structure three indices are stored for each node: predecessor, thread and depth. In the XTI data structure depth is replaced by the number of successors and the last successor (according to the thread index).
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AC_DEFUN([LX_CHECK_CPLEX],

[

  AC_ARG_WITH([cplex],

AS_HELP_STRING([--with-cplex@<:@=PREFIX@:>@], [search for CPLEX under PREFIX or under the default search paths if PREFIX is not given @<:@default@:>@])

AS_HELP_STRING([--without-cplex], [disable checking for CPLEX]),

              [], [with_cplex=yes])



  AC_ARG_WITH([cplex-includedir],

AS_HELP_STRING([--with-cplex-includedir=DIR], [search for CPLEX headers in DIR]),

              [], [with_cplex_includedir=no])



  AC_ARG_WITH([cplex-libdir],

AS_HELP_STRING([--with-cplex-libdir=DIR], [search for CPLEX libraries in DIR]),

              [], [with_cplex_libdir=no])



  lx_cplex_found=no

  if test x"$with_cplex" != x"no"; then

    AC_MSG_CHECKING([for CPLEX])



    if test x"$with_cplex_includedir" != x"no"; then

      CPLEX_CFLAGS="-I$with_cplex_includedir"

    elif test x"$with_cplex" != x"yes"; then

      CPLEX_CFLAGS="-I$with_cplex/include"

    elif test x"$CPLEX_INCLUDEDIR" != x; then

      CPLEX_CFLAGS="-I$CPLEX_INCLUDEDIR"

    fi



    if test x"$with_cplex_libdir" != x"no"; then

      CPLEX_LDFLAGS="-L$with_cplex_libdir"

    elif test x"$with_cplex" != x"yes"; then

      CPLEX_LDFLAGS="-L$with_cplex/lib"

    elif test x"$CPLEX_LIBDIR" != x; then

      CPLEX_LDFLAGS="-L$CPLEX_LIBDIR"

    fi

    CPLEX_LIBS="-lcplex -lm -lpthread"



    lx_save_cxxflags="$CXXFLAGS"

    lx_save_ldflags="$LDFLAGS"

    lx_save_libs="$LIBS"

    CXXFLAGS="$CPLEX_CFLAGS"

    LDFLAGS="$CPLEX_LDFLAGS"

    LIBS="$CPLEX_LIBS"



    lx_cplex_test_prog='

      extern "C" {

      #include <ilcplex/cplex.h>

      }



      int main(int argc, char** argv)

      {

        CPXENVptr env = NULL;

        return 0;

      }'



    AC_LANG_PUSH(C++)

    AC_LINK_IFELSE([$lx_cplex_test_prog], [lx_cplex_found=yes], [lx_cplex_found=no])

    AC_LANG_POP(C++)



    CXXFLAGS="$lx_save_cxxflags"

    LDFLAGS="$lx_save_ldflags"

    LIBS="$lx_save_libs"



    if test x"$lx_cplex_found" = x"yes"; then

      AC_DEFINE([HAVE_CPLEX], [1], [Define to 1 if you have CPLEX.])

      lx_lp_found=yes

      AC_DEFINE([HAVE_LP], [1], [Define to 1 if you have any LP solver.])

      lx_mip_found=yes

      AC_DEFINE([HAVE_MIP], [1], [Define to 1 if you have any MIP solver.])

      AC_MSG_RESULT([yes])

    else

      CPLEX_CFLAGS=""

      CPLEX_LDFLAGS=""

      CPLEX_LIBS=""

      AC_MSG_RESULT([no])

    fi

  fi

  CPLEX_LIBS="$CPLEX_LDFLAGS $CPLEX_LIBS"

  AC_SUBST(CPLEX_CFLAGS)

  AC_SUBST(CPLEX_LIBS)

  AM_CONDITIONAL([HAVE_CPLEX], [test x"$lx_cplex_found" = x"yes"])

])