+ echo "$as_me:4292: checking if the build-compiler \"$BUILD_CC\" works" >&5
+echo $ECHO_N "checking if the build-compiler \"$BUILD_CC\" works... $ECHO_C" >&6
+
+ cf_save_crossed=$cross_compiling
+ cf_save_ac_link=$ac_link
+ cross_compiling=no
+ ac_link='$BUILD_CC -o "conftest$ac_exeext" $BUILD_CFLAGS $BUILD_CPPFLAGS $BUILD_LDFLAGS "conftest.$ac_ext" $BUILD_LIBS >&5'
+
+ if test "$cross_compiling" = yes; then
+ cf_ok_build_cc=unknown
+else
+ cat >"conftest.$ac_ext" <<_ACEOF
+#line 4304 "configure"
+#include "confdefs.h"
+#include <stdio.h>
+ int main(int argc, char *argv[])
+ {
+ ${cf_cv_main_return:-return}(argc < 0 || argv == 0 || argv[0] == 0);
+ }
+
+_ACEOF
+rm -f "conftest$ac_exeext"
+if { (eval echo "$as_me:4314: \"$ac_link\"") >&5
+ (eval $ac_link) 2>&5
+ ac_status=$?
+ echo "$as_me:4317: \$? = $ac_status" >&5
+ (exit "$ac_status"); } && { ac_try='"./conftest$ac_exeext"'
+ { (eval echo "$as_me:4319: \"$ac_try\"") >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ echo "$as_me:4322: \$? = $ac_status" >&5
+ (exit "$ac_status"); }; }; then
+ cf_ok_build_cc=yes
+else
+ echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+cat "conftest.$ac_ext" >&5
+cf_ok_build_cc=no
+fi
+rm -f core ./core.* ./*.core "conftest$ac_exeext" "conftest.$ac_objext" "conftest.$ac_ext"
+fi
+
+ cross_compiling=$cf_save_crossed
+ ac_link=$cf_save_ac_link
+
+ echo "$as_me:4337: result: $cf_ok_build_cc" >&5
+echo "${ECHO_T}$cf_ok_build_cc" >&6
+
+ if test "$cf_ok_build_cc" != yes
+ then
+ { { echo "$as_me:4342: error: Cross-build requires two compilers.