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m4/lx_check_glpk.m4
author Balazs Dezso <deba@inf.elte.hu>
Thu, 24 Jun 2010 09:27:53 +0200
changeset 732 bb70ad62c95f
parent 459 ed54c0d13df0
parent 621 8a144437db7d
permissions -rw-r--r--
Fix critical bug in preflow (#372)

The wrong transition between the bound decrease and highest active
heuristics caused the bug. The last node chosen in bound decrease mode
is used in the first iteration in highest active mode. 
     1 AC_DEFUN([LX_CHECK_GLPK],

     2 [

     3   AC_ARG_WITH([glpk],

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

     5 AS_HELP_STRING([--without-glpk], [disable checking for GLPK]),

     6               [], [with_glpk=yes])

     7 

     8   AC_ARG_WITH([glpk-includedir],

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

    10               [], [with_glpk_includedir=no])

    11 

    12   AC_ARG_WITH([glpk-libdir],

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

    14               [], [with_glpk_libdir=no])

    15 

    16   lx_glpk_found=no

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

    18     AC_MSG_CHECKING([for GLPK])

    19 

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

    21       GLPK_CFLAGS="-I$with_glpk_includedir"

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

    23       GLPK_CFLAGS="-I$with_glpk/include"

    24     fi

    25 

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

    27       GLPK_LDFLAGS="-L$with_glpk_libdir"

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

    29       GLPK_LDFLAGS="-L$with_glpk/lib"

    30     fi

    31     GLPK_LIBS="-lglpk"

    32 

    33     lx_save_cxxflags="$CXXFLAGS"

    34     lx_save_ldflags="$LDFLAGS"

    35     lx_save_libs="$LIBS"

    36     CXXFLAGS="$GLPK_CFLAGS"

    37     LDFLAGS="$GLPK_LDFLAGS"

    38     LIBS="$GLPK_LIBS"

    39 

    40     lx_glpk_test_prog='

    41       extern "C" {

    42       #include <glpk.h>

    43       }

    44 

    45       #if (GLP_MAJOR_VERSION < 4) \

    46          || (GLP_MAJOR_VERSION == 4 && GLP_MINOR_VERSION < 33)

    47       #error Supported GLPK versions: 4.33 or above

    48       #endif

    49 

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

    51       {

    52         LPX *lp;

    53         lp = lpx_create_prob();

    54         lpx_delete_prob(lp);

    55         return 0;

    56       }'

    57 

    58     AC_LANG_PUSH(C++)

    59     AC_LINK_IFELSE([$lx_glpk_test_prog], [lx_glpk_found=yes], [lx_glpk_found=no])

    60     AC_LANG_POP(C++)

    61 

    62     CXXFLAGS="$lx_save_cxxflags"

    63     LDFLAGS="$lx_save_ldflags"

    64     LIBS="$lx_save_libs"

    65 

    66     if test x"$lx_glpk_found" = x"yes"; then

    67       AC_DEFINE([LEMON_HAVE_GLPK], [1], [Define to 1 if you have GLPK.])

    68       lx_lp_found=yes

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

    70       lx_mip_found=yes

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

    72       AC_MSG_RESULT([yes])

    73     else

    74       GLPK_CFLAGS=""

    75       GLPK_LDFLAGS=""

    76       GLPK_LIBS=""

    77       AC_MSG_RESULT([no])

    78     fi

    79   fi

    80   GLPK_LIBS="$GLPK_LDFLAGS $GLPK_LIBS"

    81   AC_SUBST(GLPK_CFLAGS)

    82   AC_SUBST(GLPK_LIBS)

    83   AM_CONDITIONAL([HAVE_GLPK], [test x"$lx_glpk_found" = x"yes"])

    84 ])
lemon-1.1