Location: LEMON/LEMON-main/m4/lx_check_soplex.m4 - annotation

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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.
AC_DEFUN([LX_CHECK_SOPLEX],
[
  AC_ARG_WITH([soplex],
AS_HELP_STRING([--with-soplex@<:@=PREFIX@:>@], [search for SOPLEX under PREFIX or under the default search paths if PREFIX is not given @<:@default@:>@])
AS_HELP_STRING([--without-soplex], [disable checking for SOPLEX]),
              [], [with_soplex=yes])

  AC_ARG_WITH([soplex-includedir],
AS_HELP_STRING([--with-soplex-includedir=DIR], [search for SOPLEX headers in DIR]),
              [], [with_soplex_includedir=no])

  AC_ARG_WITH([soplex-libdir],
AS_HELP_STRING([--with-soplex-libdir=DIR], [search for SOPLEX libraries in DIR]),
              [], [with_soplex_libdir=no])

  lx_soplex_found=no
  if test x"$with_soplex" != x"no"; then
    AC_MSG_CHECKING([for SOPLEX])

    if test x"$with_soplex_includedir" != x"no"; then
      SOPLEX_CXXFLAGS="-I$with_soplex_includedir"
    elif test x"$with_soplex" != x"yes"; then
      SOPLEX_CXXFLAGS="-I$with_soplex/include"
    fi

    if test x"$with_soplex_libdir" != x"no"; then
      SOPLEX_LDFLAGS="-L$with_soplex_libdir"
    elif test x"$with_soplex" != x"yes"; then
      SOPLEX_LDFLAGS="-L$with_soplex/lib"
    fi
    SOPLEX_LIBS="-lsoplex -lz"

    lx_save_cxxflags="$CXXFLAGS"
    lx_save_ldflags="$LDFLAGS"
    lx_save_libs="$LIBS"
    CXXFLAGS="$SOPLEX_CXXFLAGS"
    LDFLAGS="$SOPLEX_LDFLAGS"
    LIBS="$SOPLEX_LIBS"

    lx_soplex_test_prog='
      #include <soplex/soplex.h>

      int main(int argc, char** argv)
      {
        soplex::SoPlex soplex;
        return 0;
      }'

    AC_LANG_PUSH(C++)
    AC_LINK_IFELSE([$lx_soplex_test_prog], [lx_soplex_found=yes], [lx_soplex_found=no])
    AC_LANG_POP(C++)

    CXXFLAGS="$lx_save_cxxflags"
    LDFLAGS="$lx_save_ldflags"
    LIBS="$lx_save_libs"

    if test x"$lx_soplex_found" = x"yes"; then
      AC_DEFINE([HAVE_SOPLEX], [1], [Define to 1 if you have SOPLEX.])
      lx_lp_found=yes
      AC_DEFINE([HAVE_LP], [1], [Define to 1 if you have any LP solver.])
      AC_MSG_RESULT([yes])
    else
      SOPLEX_CXXFLAGS=""
      SOPLEX_LDFLAGS=""
      SOPLEX_LIBS=""
      AC_MSG_RESULT([no])
    fi
  fi
  SOPLEX_LIBS="$SOPLEX_LDFLAGS $SOPLEX_LIBS"
  AC_SUBST(SOPLEX_CXXFLAGS)
  AC_SUBST(SOPLEX_LIBS)
  AM_CONDITIONAL([HAVE_SOPLEX], [test x"$lx_soplex_found" = x"yes"])
])