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m4/lx_check_cplex.m4
author Peter Kovacs <kpeter@inf.elte.hu>
Fri, 03 Apr 2009 18:59:15 +0200
changeset 655 6ac5d9ae1d3d
parent 187 84c2a2e5cfee
child 674 20dac2104519
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_CPLEX],

     2 [

     3   AC_ARG_WITH([cplex],

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

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

     6               [], [with_cplex=yes])

     7 

     8   AC_ARG_WITH([cplex-includedir],

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

    10               [], [with_cplex_includedir=no])

    11 

    12   AC_ARG_WITH([cplex-libdir],

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

    14               [], [with_cplex_libdir=no])

    15 

    16   lx_cplex_found=no

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

    18     AC_MSG_CHECKING([for CPLEX])

    19 

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

    21       CPLEX_CFLAGS="-I$with_cplex_includedir"

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

    23       CPLEX_CFLAGS="-I$with_cplex/include"

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

    25       CPLEX_CFLAGS="-I$CPLEX_INCLUDEDIR"

    26     fi

    27 

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

    29       CPLEX_LDFLAGS="-L$with_cplex_libdir"

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

    31       CPLEX_LDFLAGS="-L$with_cplex/lib"

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

    33       CPLEX_LDFLAGS="-L$CPLEX_LIBDIR"

    34     fi

    35     CPLEX_LIBS="-lcplex -lm -lpthread"

    36 

    37     lx_save_cxxflags="$CXXFLAGS"

    38     lx_save_ldflags="$LDFLAGS"

    39     lx_save_libs="$LIBS"

    40     CXXFLAGS="$CPLEX_CFLAGS"

    41     LDFLAGS="$CPLEX_LDFLAGS"

    42     LIBS="$CPLEX_LIBS"

    43 

    44     lx_cplex_test_prog='

    45       extern "C" {

    46       #include <ilcplex/cplex.h>

    47       }

    48 

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

    50       {

    51         CPXENVptr env = NULL;

    52         return 0;

    53       }'

    54 

    55     AC_LANG_PUSH(C++)

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

    57     AC_LANG_POP(C++)

    58 

    59     CXXFLAGS="$lx_save_cxxflags"

    60     LDFLAGS="$lx_save_ldflags"

    61     LIBS="$lx_save_libs"

    62 

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

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

    65       lx_lp_found=yes

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

    67       lx_mip_found=yes

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

    69       AC_MSG_RESULT([yes])

    70     else

    71       CPLEX_CFLAGS=""

    72       CPLEX_LDFLAGS=""

    73       CPLEX_LIBS=""

    74       AC_MSG_RESULT([no])

    75     fi

    76   fi

    77   CPLEX_LIBS="$CPLEX_LDFLAGS $CPLEX_LIBS"

    78   AC_SUBST(CPLEX_CFLAGS)

    79   AC_SUBST(CPLEX_LIBS)

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

    81 ])
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