-echo $ac_n "checking for working const""... $ac_c" 1>&6
-echo "configure:1073: checking for working const" >&5
-if eval "test \"`echo '$''{'ac_cv_c_const'+set}'`\" = set"; then
- echo $ac_n "(cached) $ac_c" 1>&6
-else
- cat > conftest.$ac_ext <<EOF
-#line 1078 "configure"
-#include "confdefs.h"
-
-int main() {
-
-/* Ultrix mips cc rejects this. */
-typedef int charset[2]; const charset x;
-/* SunOS 4.1.1 cc rejects this. */
-char const *const *ccp;
-char **p;
-/* NEC SVR4.0.2 mips cc rejects this. */
-struct point {int x, y;};
-static struct point const zero = {0,0};
-/* AIX XL C 1.02.0.0 rejects this.
- It does not let you subtract one const X* pointer from another in an arm
- of an if-expression whose if-part is not a constant expression */
-const char *g = "string";
-ccp = &g + (g ? g-g : 0);
-/* HPUX 7.0 cc rejects these. */
-++ccp;
-p = (char**) ccp;
-ccp = (char const *const *) p;
-{ /* SCO 3.2v4 cc rejects this. */
- char *t;
- char const *s = 0 ? (char *) 0 : (char const *) 0;
-
- *t++ = 0;
-}
-{ /* Someone thinks the Sun supposedly-ANSI compiler will reject this. */
- int x[] = {25, 17};
- const int *foo = &x[0];
- ++foo;
-}
-{ /* Sun SC1.0 ANSI compiler rejects this -- but not the above. */
- typedef const int *iptr;
- iptr p = 0;
- ++p;
-}
-{ /* AIX XL C 1.02.0.0 rejects this saying
- "k.c", line 2.27: 1506-025 (S) Operand must be a modifiable lvalue. */
- struct s { int j; const int *ap[3]; };
- struct s *b; b->j = 5;
-}
-{ /* ULTRIX-32 V3.1 (Rev 9) vcc rejects this */
- const int foo = 10;
-}
-
-; return 0; }
-EOF
-if { (eval echo configure:1127: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
- rm -rf conftest*
- ac_cv_c_const=yes
-else
- echo "configure: failed program was:" >&5
- cat conftest.$ac_ext >&5
- rm -rf conftest*
- ac_cv_c_const=no
-fi
-rm -f conftest*
-fi
-
-echo "$ac_t""$ac_cv_c_const" 1>&6
-if test $ac_cv_c_const = no; then
- cat >> confdefs.h <<\EOF
-#define const
-EOF
-
-fi
-
-