Files @ r656:e6927fe719e6

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

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kpeter (Peter Kovacs)
Support >= and <= constraints in NetworkSimplex (#219, #234) By default the same inequality constraints are supported as by Circulation (the GEQ form), but the LEQ form can also be selected using the problemType() function. The documentation of the min. cost flow module is reworked and extended with important notes and explanations about the different variants of the problem and about the dual solution and optimality conditions.
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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"])

])