--- a/configure
+++ b/configure
@@ -76,7 +76,7 @@ if [ x"$CC" = x ]; then
     for TRY in egcs gcc g++ CC c++ cc; do
        (
            $TRY __conftest.c -o __conftest || exit 1;
-           ./__conftest || exit 1;
+           ${RUN_CONFTEST:-./__conftest} || exit 1;
        ) >/dev/null 2>&1 || continue;
        CC=$TRY
        break;
@@ -92,7 +92,7 @@ else
     echo -n 'Checking if C compiler works... '
     if (
           $CC __conftest.c -o __conftest || exit 1
-          ./__conftest || exit 1
+          ${RUN_CONFTEST:-./__conftest} || exit 1
        ) >/dev/null 2>&1; then
          echo 'yes'
      else
@@ -172,13 +172,13 @@ int main() {
 EOF
 if (
       $CC $CFLAGS  __conftest.c  -o __conftest || exit 1
-      ./__conftest || exit 1
+      ${RUN_CONFTEST:-./__conftest} || exit 1
    ) >/dev/null 2>&1; then
     echo 'yes'
 else
     if (
           $CC $CFLAGS -D__USE_BSD_SIGNAL __conftest.c  -o __conftest || exit 1
-          ./__conftest || exit 1
+          ${RUN_CONFTEST:-./__conftest} || exit 1
        ) >/dev/null 2>&1; then
         echo '-D__USE_BSD_SIGNAL'
         CFLAGS="$CFLAGS -D__USE_BSD_SIGNAL"
@@ -251,7 +251,7 @@ if (
 else
     if (
           $CC $CFLAGS -D_GNU_SOURCE __conftest.c  -o __conftest || exit 1
-          ./__conftest || exit 1
+          ${RUN_CONFTEST:-./__conftest} || exit 1
        ) >/dev/null 2>&1; then
         echo '-D_GNU_SOURCE'
         CFLAGS="$CFLAGS -D_GNU_SOURCE"
@@ -282,20 +282,20 @@ int main() {
 EOF
 if (
       $CC $CFLAGS  __conftest.c $LIBBSD -o __conftest || exit 1
-      ./__conftest || exit 1
+      ${RUN_CONFTEST:-./__conftest} || exit 1
    ) >/dev/null 2>&1; then
     echo 'ok'
 else
     if (
           $CC $CFLAGS  __conftest.c -lsnprintf $LIBBSD -o __conftest || exit 1
-          ./__conftest || exit 1
+          ${RUN_CONFTEST:-./__conftest} || exit 1
        ) >/dev/null 2>&1; then
         echo '-lsnprintf'
         LIBS="$LIBS -lsnprintf"
     else
         if (
               $CC $CFLAGS  __conftest.c -ldb $LIBBSD -o __conftest || exit 1
-              ./__conftest || exit 1
+              ${RUN_CONFTEST:-./__conftest} || exit 1
            ) >/dev/null 2>&1; then
             echo '-ldb'
             LIBS="$LIBS -ldb"