diff --git a/auto/configure b/auto/configure
index 8b182d9..792eee2 100755
--- a/auto/configure
+++ b/auto/configure
@@ -1,8 +1,28 @@
 
 CC=cc
-CPP='cc -E'
+CC_STRONG="$CC -Wall -Werror"
+CPP="$CC -E"
 
-echo > ngx_auto_config.h
+NGX_AUTO_CONFIG_H=ngx_auto_config.h
+
+echo > $NGX_AUTO_CONFIG_H
+
+
+CC_WARN=$CC_STRONG
+
+NGX_FMT_NAME=OFF_FMT
+NGX_TYPE="off_t"; . auto/types/sizeof
+NGX_FORMATS="%ld %lld %qd"; . auto/fmt/fmt
+
+NGX_FMT_NAME=TIME_FMT
+NGX_TYPE="time_t"; . auto/types/sizeof
+NGX_FORMATS="%d %ld %lld %qd"; . auto/fmt/fmt
+
+
+CC_WARN=$CC
+
+exit
+
 
 NGX_TYPE="long"; . auto/types/sizeof; NGX_MAX_LONG=$NGX_MAX_SIZE
 NGX_FORMATS="l"; . auto/fmt/fmt
@@ -11,6 +31,15 @@
 NGX_TYPE="long long"; . auto/types/sizeof; NGX_MAX_LONG_LONG=$NGX_MAX_SIZE
 NGX_FORMATS="ll q"; . auto/fmt/fmt
 
+
+CC_WARN=$CC_STRONG
+
+NGX_TYPE="off_t"; . auto/types/sizeof
+NGX_FORMATS="l ll q"; . auto/fmt/fmt
+
+
+CC_WARN=$CC
+
 #NGX_TYPE="__int64_t"; . auto/types/typedef; NGX_TIME_T_FMT=$NGX_FMT
 
 #NGX_TYPE="time_t"; . auto/types/typedef; NGX_TIME_T_FMT=$NGX_FMT
@@ -18,8 +47,6 @@
 
 #exit
 
-. auto/types/time_t
-
 . auto/types/uint64_t
 . auto/types/uintptr_t