[PATCH] Configure: fix build with -Werror=old-style-definition

[Piotr Sikora]

# HG changeset patch
# User Piotr Sikora <piotrsikora at google.com>
# Date 1476698419 25200
#      Mon Oct 17 03:00:19 2016 -0700
# Node ID ec3df1ebada2b25409fcba4502f1267640f43a76
# Parent  8046b999aaaf95980e89a6d0620657bc4123342b
Configure: fix build with -Werror=old-style-definition.

Signed-off-by: Piotr Sikora <piotrsikora at google.com>

diff -r 8046b999aaaf -r ec3df1ebada2 nxt/auto/clang
--- a/nxt/auto/clang
+++ b/nxt/auto/clang
@@ -185,7 +185,7 @@ nxt_feature_name=NXT_HAVE_BUILTIN_UNREAC
 nxt_feature_run=no
 nxt_feature_incs=
 nxt_feature_libs=
-nxt_feature_test="int main() {
+nxt_feature_test="int main(void) {
                       __builtin_unreachable();
                   }"
 . ${NXT_AUTO}feature
@@ -196,7 +196,7 @@ nxt_feature_name=NXT_HAVE_BUILTIN_PREFET
 nxt_feature_run=no
 nxt_feature_incs=
 nxt_feature_libs=
-nxt_feature_test="int main() {
+nxt_feature_test="int main(void) {
                       __builtin_prefetch(0);
                   }"
 . ${NXT_AUTO}feature
@@ -209,7 +209,7 @@ nxt_feature_path=
 nxt_feature_libs=
 nxt_feature_test="int n __attribute__ ((visibility(\"default\")));
 
-                  int main() {
+                  int main(void) {
                       return 1;
                   }"
 . ${NXT_AUTO}feature
@@ -228,7 +228,7 @@ nxt_feature_test="#include <stdlib.h>
                       return malloc(1);
                   }
 
-                  int main() {
+                  int main(void) {
                       if (f() != NULL) {
                           return 1;
                       }
@@ -255,7 +255,7 @@ else
     nxt_feature_libs=
     nxt_feature_test="int n __attribute__ ((aligned(64)));
 
-                      int main() {
+                      int main(void) {
                           return 1;
                       }"
     . ${NXT_AUTO}feature
diff -r 8046b999aaaf -r ec3df1ebada2 nxt/auto/getrandom
--- a/nxt/auto/getrandom
+++ b/nxt/auto/getrandom
@@ -14,7 +14,7 @@ nxt_feature_test="#include <unistd.h>
                   #include <sys/syscall.h>
                   #include <linux/random.h>
 
-                  int main() {
+                  int main(void) {
                       char  buf[4];
 
                       (void) syscall(SYS_getrandom, buf, 4, 0);
diff -r 8046b999aaaf -r ec3df1ebada2 nxt/auto/memalign
--- a/nxt/auto/memalign
+++ b/nxt/auto/memalign
@@ -13,7 +13,7 @@ nxt_feature_incs=
 nxt_feature_libs=
 nxt_feature_test="#include <stdlib.h>
 
-                 int main() {
+                 int main(void) {
                      void  *p;
 
                      if (posix_memalign(&p, 4096, 4096) != 0)
@@ -34,7 +34,7 @@ if [ $nxt_found = no ]; then
     nxt_feature_libs=
     nxt_feature_test="#include <stdlib.h>
 
-                     int main() {
+                     int main(void) {
                          if (memalign(4096, 4096) == NULL)
                              return 1;
                          return 0;
diff -r 8046b999aaaf -r ec3df1ebada2 nxt/auto/pcre
--- a/nxt/auto/pcre
+++ b/nxt/auto/pcre
@@ -20,7 +20,7 @@ if /bin/sh -c "(pcre-config --version)" 
     nxt_feature_libs=$NXT_PCRE_LIB
     nxt_feature_test="#include <pcre.h>
 
-                     int main() {
+                     int main(void) {
                          pcre  *re;
 
                          re = pcre_compile(NULL, 0, NULL, 0, NULL);
diff -r 8046b999aaaf -r ec3df1ebada2 nxt/auto/time
--- a/nxt/auto/time
+++ b/nxt/auto/time
@@ -12,7 +12,7 @@ nxt_feature_incs=
 nxt_feature_libs=
 nxt_feature_test="#include <time.h>
 
-                  int main() {
+                  int main(void) {
                       time_t     t;
                       struct tm  tm;
 
@@ -32,7 +32,7 @@ nxt_feature_incs=
 nxt_feature_libs=
 nxt_feature_test="#include <time.h>
 
-                  int main() {
+                  int main(void) {
                       altzone = 0;
                       return 0;
                   }"