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m4/lx_check_soplex.m4
author Peter Kovacs <kpeter@inf.elte.hu>
Thu, 12 Nov 2009 23:26:13 +0100
changeset 806 fa6f37d7a25b
parent 539 547e966b3b29
parent 511 8a144437db7d
permissions -rw-r--r--
Entirely rework CapacityScaling (#180)

- Use the new interface similarly to NetworkSimplex.
- Rework the implementation using an efficient internal structure
for handling the residual network. This improvement made the
code much faster (up to 2-5 times faster on large graphs).
- Handle GEQ supply type (LEQ is not supported).
- Handle negative costs for arcs of finite capacity.
(Note that this algorithm cannot handle arcs of negative cost
and infinite upper bound, thus it returns UNBOUNDED if such
an arc exists.)
- Extend the documentation. 
     1 AC_DEFUN([LX_CHECK_SOPLEX],

     2 [

     3   AC_ARG_WITH([soplex],

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

     5 AS_HELP_STRING([--without-soplex], [disable checking for SOPLEX]),

     6               [], [with_soplex=yes])

     7 

     8   AC_ARG_WITH([soplex-includedir],

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

    10               [], [with_soplex_includedir=no])

    11 

    12   AC_ARG_WITH([soplex-libdir],

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

    14               [], [with_soplex_libdir=no])

    15 

    16   lx_soplex_found=no

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

    18     AC_MSG_CHECKING([for SOPLEX])

    19 

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

    21       SOPLEX_CXXFLAGS="-I$with_soplex_includedir"

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

    23       SOPLEX_CXXFLAGS="-I$with_soplex/src"

    24     fi

    25 

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

    27       SOPLEX_LDFLAGS="-L$with_soplex_libdir"

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

    29       SOPLEX_LDFLAGS="-L$with_soplex/lib"

    30     fi

    31     SOPLEX_LIBS="-lsoplex -lz"

    32 

    33     lx_save_cxxflags="$CXXFLAGS"

    34     lx_save_ldflags="$LDFLAGS"

    35     lx_save_libs="$LIBS"

    36     CXXFLAGS="$SOPLEX_CXXFLAGS"

    37     LDFLAGS="$SOPLEX_LDFLAGS"

    38     LIBS="$SOPLEX_LIBS"

    39 

    40     lx_soplex_test_prog='

    41       #include <soplex.h>

    42 

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

    44       {

    45         soplex::SoPlex soplex;

    46         return 0;

    47       }'

    48 

    49     AC_LANG_PUSH(C++)

    50     AC_LINK_IFELSE([$lx_soplex_test_prog], [lx_soplex_found=yes], [lx_soplex_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_soplex_found" = x"yes"; then

    58       AC_DEFINE([LEMON_HAVE_SOPLEX], [1], [Define to 1 if you have SOPLEX.])

    59       lx_lp_found=yes

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

    61       AC_MSG_RESULT([yes])

    62     else

    63       SOPLEX_CXXFLAGS=""

    64       SOPLEX_LDFLAGS=""

    65       SOPLEX_LIBS=""

    66       AC_MSG_RESULT([no])

    67     fi

    68   fi

    69   SOPLEX_LIBS="$SOPLEX_LDFLAGS $SOPLEX_LIBS"

    70   AC_SUBST(SOPLEX_CXXFLAGS)

    71   AC_SUBST(SOPLEX_LIBS)

    72   AM_CONDITIONAL([HAVE_SOPLEX], [test x"$lx_soplex_found" = x"yes"])

    73 ])
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