configure

生成直角Steiner树的程序包

		eps3 = x3;
		x3 *= 0.5;
	}

	_FPU_SETCW (orig_cw);

	if ((eps1 != eps2) && (eps1 == eps3)) {
		/* Houston, we have a problem... */
		/* Roger, set PC=double to fix it... */
		exit (0);
	}
	/* Any failure here says we can't use this fix -- it doesn't work. */
	exit (1);
}

	void
store_double (

double *	p,
double		val
)
{
	*p = val;
}

EOF
if { (eval echo configure:1468: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
then
  ac_cv_x86_fp_precision_fix=yes
else
  echo "configure: failed program was:" >&5
  cat conftest.$ac_ext >&5
  rm -fr conftest*
  ac_cv_x86_fp_precision_fix=no
fi
rm -fr conftest*
fi

ac_ext=c
# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
ac_cpp='$CPP $CPPFLAGS'
ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
cross_compiling=$ac_cv_prog_cc_cross

fi

echo "$ac_t""$ac_cv_x86_fp_precision_fix" 1>&6
if test "$ac_cv_x86_fp_precision_fix" = "yes"
then
	cat >> confdefs.h <<\EOF
#define HAVE_X86_FLOATING_POINT_PRECISION_FIX 1
EOF

	# This is a better solution.  No need to use -ffloat-store
	ac_cv_gcc_needs_float_store=no
else
 if test "$GCC" != "yes"
 then
	# Not GCC -- can't use -ffloat-store
	ac_cv_gcc_needs_float_store=no
 else
	echo $ac_n "checking if gcc -ffloat-store needed""... $ac_c" 1>&6
echo "configure:1505: checking if gcc -ffloat-store needed" >&5
if eval "test \"`echo '$''{'ac_cv_gcc_needs_float_store'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  
	ac_ext=c
# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
ac_cpp='$CPP $CPPFLAGS'
ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
cross_compiling=$ac_cv_prog_cc_cross

	if test "$cross_compiling" = yes; then
  ac_cv_gcc_needs_float_store=no
else
  cat > conftest.$ac_ext <<EOF
#line 1521 "configure"
#include "confdefs.h"
#if STDC_HEADERS
#include <stdlib.h>
#endif

extern void store_double (
#ifdef __STDC__
double *, double
#endif
);

main ()

{
double		x, eps1;
double		y, eps2;
double		z;

	eps1 = 1.0;
	x = 1.0;
	for (;;) {
		z = x + 1.0;
		if (z == 1.0) break;
		eps1 = x;
		x *= 0.5;
	}

	eps2 = 1.0;
	y = 1.0;
	for (;;) {
		store_double (&z, y + 1.0);
		if (z == 1.0) break;
		eps2 = y;
		y *= 0.5;
	}

	if (eps1 == eps2) {
		/* Exiting with failure here says we don't */
		/* need -ffloat-store. */
		exit (1);
	}

	/* Houston, we have a problem...  Roger, use -ffloat-store. */
	exit (0);
}

	void
store_double (

double *	p,
double		val
)
{
	*p = val;
}

EOF
if { (eval echo configure:1579: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
then
  ac_cv_gcc_needs_float_store=yes
else
  echo "configure: failed program was:" >&5
  cat conftest.$ac_ext >&5
  rm -fr conftest*
  ac_cv_gcc_needs_float_store=no
fi
rm -fr conftest*
fi

ac_ext=c
# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
ac_cpp='$CPP $CPPFLAGS'
ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
cross_compiling=$ac_cv_prog_cc_cross

fi

echo "$ac_t""$ac_cv_gcc_needs_float_store" 1>&6
 fi
fi
GCC_FLOAT_STORE=
if test "$ac_cv_gcc_needs_float_store" = "yes"
then
	GCC_FLOAT_STORE='-ffloat-store'
fi



echo $ac_n "checking for times() and CLK_TCK""... $ac_c" 1>&6
echo "configure:1612: checking for times() and CLK_TCK" >&5
if eval "test \"`echo '$''{'ac_cv_header_unix_cpu_time'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  cat > conftest.$ac_ext <<EOF
#line 1617 "configure"
#include "confdefs.h"
#include <sys/types.h>
#include <sys/time.h>
#include <sys/times.h>
#include <time.h>

int main() {
clock_t		ticks = CLK_TCK;
  clock_t		total;
  struct tms		t;

	times (&t);
	total = t.tms_utime + t.tms_stime + t.tms_cutime + t.tms_cstime;
	

; return 0; }
EOF
if { (eval echo configure:1635: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
  rm -rf conftest*
  ac_cv_header_unix_cpu_time=yes
else
  echo "configure: failed program was:" >&5
  cat conftest.$ac_ext >&5
  rm -rf conftest*
  ac_cv_header_unix_cpu_time=no
fi
rm -f conftest*
fi

echo "$ac_t""$ac_cv_header_unix_cpu_time" 1>&6

if test $ac_cv_header_unix_cpu_time = yes; then
	cat >> confdefs.h <<\EOF
#define UNIX_CPU_TIME 1
EOF

fi

echo $ac_n "checking for working uname function""... $ac_c" 1>&6
echo "configure:1657: checking for working uname function" >&5
if eval "test \"`echo '$''{'ac_cv_func_uname_works'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  cat > conftest.$ac_ext <<EOF
#line 1662 "configure"
#include "confdefs.h"
#include <sys/utsname.h>

int main() {
struct utsname	un;
  int			total;

	uname (&un);
	total = *un.sysname
	      + *un.nodename
	      + *un.release
	      + *un.version
	      + *un.machine;
	printf ("%d\n", total);

; return 0; }
EOF
if { (eval echo configure:1680: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
  rm -rf conftest*
  ac_cv_func_uname_works=yes
else
  echo "configure: failed program was:" >&5
  cat conftest.$ac_ext >&5
  rm -rf conftest*
  ac_cv_func_uname_works=no
fi
rm -f conftest*
fi

echo "$ac_t""$ac_cv_func_uname_works" 1>&6

if test $ac_cv_func_uname_works = yes; then
	cat >> confdefs.h <<\EOF
#define UNAME_FUNCTION_WORKS 1
EOF

fi

for ac_func in popen pclose
do
echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
echo "configure:1704: checking for $ac_func" >&5
if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  cat > conftest.$ac_ext <<EOF
#line 1709 "configure"
#include "confdefs.h"
/* System header to define __stub macros and hopefully few prototypes,
    which can conflict with char $ac_func(); below.  */
#include <assert.h>
/* Override any gcc2 internal prototype to avoid an error.  */
/* We use char because int might match the return type of a gcc2
    builtin and then its argument prototype would still apply.  */
char $ac_func();

int main() {

/* The GNU C library defines this for functions which it implements
    to always fail with ENOSYS.  Some functions are actually named
    something starting with __ and the normal name is an alias.  */
#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
choke me
#else
$ac_func();
#endif

; return 0; }
EOF
if { (eval echo configure:1732: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
  rm -rf conftest*
  eval "ac_cv_func_$ac_func=yes"
else
  echo "configure: failed program was:" >&5
  cat conftest.$ac_ext >&5
  rm -rf conftest*
  eval "ac_cv_func_$ac_func=no"
fi
rm -f conftest*
fi

if eval "test \"`echo '$ac_cv_func_'$ac_func`\" = yes"; then
  echo "$ac_t""yes" 1>&6
    ac_tr_func=HAVE_`echo $ac_func | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
  cat >> confdefs.h <<EOF
#define $ac_tr_func 1
EOF
 
else
  echo "$ac_t""no" 1>&6
fi
done


# Extract the first word of "uname", so it can be a program name with args.
set dummy uname; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
echo "configure:1760: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_path_ac_cv_prog_uname_full_pathname'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  case "$ac_cv_prog_uname_full_pathname" in
  /*)
  ac_cv_path_ac_cv_prog_uname_full_pathname="$ac_cv_prog_uname_full_pathname" # Let the user override the test with a path.
  ;;
  ?:/*)			 
  ac_cv_path_ac_cv_prog_uname_full_pathname="$ac_cv_prog_uname_full_pathname" # Let the user override the test with a dos path.
  ;;
  *)
  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS=":"
  ac_dummy="$PATH"
  for ac_dir in $ac_dummy; do 
    test -z "$ac_dir" && ac_dir=.
    if test -f $ac_dir/$ac_word; then
      ac_cv_path_ac_cv_prog_uname_full_pathname="$ac_dir/$ac_word"
      break
    fi
  done
  IFS="$ac_save_ifs"
  ;;
esac
fi
ac_cv_prog_uname_full_pathname="$ac_cv_path_ac_cv_prog_uname_full_pathname"
if test -n "$ac_cv_prog_uname_full_pathname"; then
  echo "$ac_t""$ac_cv_prog_uname_full_pathname" 1>&6
else
  echo "$ac_t""no" 1>&6
fi


if test -n "$ac_cv_prog_uname_full_pathname"
then
  cat >> confdefs.h <<EOF
#define UNAME_PATH "$ac_cv_prog_uname_full_pathname"
EOF

fi

echo $ac_n "checking if stderr is an lvalue""... $ac_c" 1>&6
echo "configure:1802: checking if stderr is an lvalue" >&5
if eval "test \"`echo '$''{'ac_cv_stderr_is_lvalue'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  cat > conftest.$ac_ext <<EOF
#line 1807 "configure"
#include "confdefs.h"
#include <stdio.h>

int main() {

	FILE *		fp1;
	FILE *		fp2;
	fp1 = stderr;
	fp2 = fopen ("/dev/null", "w");
	stderr = fp2;

	fprintf (stderr, "Discarded output\n");

	stderr = fp1;
	fclose (fp2);

; return 0; }
EOF
if { (eval echo configure:1826: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
  rm -rf conftest*
  ac_cv_stderr_is_lvalue=yes
else
  echo "configure: failed program was:" >&5
  cat conftest.$ac_ext >&5
  rm -rf conftest*
  ac_cv_stderr_is_lvalue=no
fi
rm -f conftest*
fi

echo "$ac_t""$ac_cv_stderr_is_lvalue" 1>&6

if test "$ac_cv_stderr_is_lvalue" = "yes"
then
	cat >> confdefs.h <<\EOF
#define HAVE_STDERR_IS_LVALUE 1
EOF

fi

# Override the cached CPLEX settings if environment vars are set!
if test -n "$CPLEX_HEADER"
then
	if test ! -r "$CPLEX_HEADER"
	then
		{ echo "configure: error: File given by \$CPLEX_HEADER unreadable!" 1>&2; exit 1; }
	fi
	ac_cv_cplex_header="$CPLEX_HEADER"
fi
if test -n "$CPLEX_LIB"
then
	if test ! -r "$CPLEX_LIB"
	then
		{ echo "configure: error: File given by \$CPLEX_LIB unreadable!" 1>&2; exit 1; }
	fi
	ac_cv_cplex_lib="$CPLEX_LIB"
fi

# Check whether --with-cplex or --without-cplex was given.
if test "${with_cplex+set}" = set; then
  withval="$with_cplex"
  if test "$withval" = no
then
	with_cplex=no
	# Expunge cplex from the cache!
	ac_cv_cplex_header=''
	ac_cv_cplex_lib=''
else
	if test "$withval" != yes
	then
		echo "Arg to --with-cplex must be yes or no!" 1>&2
		exit 1
	fi
	with_cplex=yes
fi

fi


if test "$with_cplex" != no
then
	# Look for the cplex command in the path.  The header and library are
	# often in the same directory as the executable.
	# Extract the first word of "cplex", so it can be a program name with args.
set dummy cplex; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
echo "configure:1894: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_path_ac_cv_path_cplex'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  case "$ac_cv_path_cplex" in
  /*)
  ac_cv_path_ac_cv_path_cplex="$ac_cv_path_cplex" # Let the user override the test with a path.
  ;;
  ?:/*)			 
  ac_cv_path_ac_cv_path_cplex="$ac_cv_path_cplex" # Let the user override the test with a dos path.
  ;;
  *)
  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS=":"
  ac_dummy="$PATH"
  for ac_dir in $ac_dummy; do 
    test -z "$ac_dir" && ac_dir=.
    if test -f $ac_dir/$ac_word; then
      ac_cv_path_ac_cv_path_cplex="$ac_dir/$ac_word"
      break
    fi
  done
  IFS="$ac_save_ifs"
  ;;
esac
fi
ac_cv_path_cplex="$ac_cv_path_ac_cv_path_cplex"
if test -n "$ac_cv_path_cplex"; then
  echo "$ac_t""$ac_cv_path_cplex" 1>&6