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m4/lx_check_clp.m4
author Peter Kovacs <kpeter@inf.elte.hu>
Fri, 03 Apr 2009 18:59:15 +0200
changeset 608 6ac5d9ae1d3d
permissions -rw-r--r--
Support real types + numerical stability fix in NS (#254)

- Real types are supported by appropriate inicialization.
- A feature of the XTI spanning tree structure is removed to ensure
numerical stability (could cause problems using integer types).
The node potentials are updated always on the lower subtree,
in order to prevent overflow problems.
The former method isn't notably faster during to our tests. 
     1 AC_DEFUN([LX_CHECK_CLP],

     2 [

     3   AC_ARG_WITH([clp],

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

     5 AS_HELP_STRING([--without-clp], [disable checking for CLP]),

     6               [], [with_clp=yes])

     7 

     8   AC_ARG_WITH([clp-includedir],

     9 AS_HELP_STRING([--with-clp-includedir=DIR], [search for CLP headers in DIR]),

    10               [], [with_clp_includedir=no])

    11 

    12   AC_ARG_WITH([clp-libdir],

    13 AS_HELP_STRING([--with-clp-libdir=DIR], [search for CLP libraries in DIR]),

    14               [], [with_clp_libdir=no])

    15 

    16   lx_clp_found=no

    17   if test x"$with_clp" != x"no"; then

    18     AC_MSG_CHECKING([for CLP])

    19 

    20     if test x"$with_clp_includedir" != x"no"; then

    21       CLP_CXXFLAGS="-I$with_clp_includedir"

    22     elif test x"$with_clp" != x"yes"; then

    23       CLP_CXXFLAGS="-I$with_clp/include"

    24     fi

    25 

    26     if test x"$with_clp_libdir" != x"no"; then

    27       CLP_LDFLAGS="-L$with_clp_libdir"

    28     elif test x"$with_clp" != x"yes"; then

    29       CLP_LDFLAGS="-L$with_clp/lib"

    30     fi

    31     CLP_LIBS="-lClp -lCoinUtils -lm"

    32 

    33     lx_save_cxxflags="$CXXFLAGS"

    34     lx_save_ldflags="$LDFLAGS"

    35     lx_save_libs="$LIBS"

    36     CXXFLAGS="$CLP_CXXFLAGS"

    37     LDFLAGS="$CLP_LDFLAGS"

    38     LIBS="$CLP_LIBS"

    39 

    40     lx_clp_test_prog='

    41       #include <coin/ClpModel.hpp>

    42 

    43       int main(int argc, char** argv)

    44       {

    45         ClpModel clp;

    46         return 0;

    47       }'

    48 

    49     AC_LANG_PUSH(C++)

    50     AC_LINK_IFELSE([$lx_clp_test_prog], [lx_clp_found=yes], [lx_clp_found=no])

    51     AC_LANG_POP(C++)

    52 

    53     CXXFLAGS="$lx_save_cxxflags"

    54     LDFLAGS="$lx_save_ldflags"

    55     LIBS="$lx_save_libs"

    56 

    57     if test x"$lx_clp_found" = x"yes"; then

    58       AC_DEFINE([HAVE_CLP], [1], [Define to 1 if you have CLP.])

    59       lx_lp_found=yes

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

    61       AC_MSG_RESULT([yes])

    62     else

    63       CLP_CXXFLAGS=""

    64       CLP_LDFLAGS=""

    65       CLP_LIBS=""

    66       AC_MSG_RESULT([no])

    67     fi

    68   fi

    69   CLP_LIBS="$CLP_LDFLAGS $CLP_LIBS"

    70   AC_SUBST(CLP_CXXFLAGS)

    71   AC_SUBST(CLP_LIBS)

    72   AM_CONDITIONAL([HAVE_CLP], [test x"$lx_clp_found" = x"yes"])

    73 ])
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