On Wed, Apr 27, 2011 at 10:14:16AM -0400, Wayne E. Seguin wrote:
> Hello!
>
> I am having an issue with NGinx compiling on an ArchLinux system I have.
>
> The failure error is:
>
> # make
> make -f objs/Makefile
> make[1]: Entering directory `/usr/local/src/nginx-1.0.0'
> gcc -c -pipe -O -W -Wall -Wpointer-arith -Wno-unused-parameter
> -Wunused-function -Wunused-variable -Wunused-value -Werror -g -I src/core
> -I src/event -I src/event/modules -I src/os/unix -I objs \
> -o objs/src/core/ngx_resolver.o \
> src/core/ngx_resolver.c
> src/core/ngx_resolver.c: In function ‘ngx_resolver_process_ptr’:
> src/core/ngx_resolver.c:1425:43: error: variable ‘qclass’ set but not used
> [-Werror=unused-but-set-variable]
> src/core/ngx_resolver.c:1425:36: error: variable ‘qtype’ set but not used
> [-Werror=unused-but-set-variable]
> cc1: all warnings being treated as errors
>
> make[1]: *** [objs/src/core/ngx_resolver.o] Error 1
> make[1]: Leaving directory `/usr/local/src/nginx-1.0.0'
> make: *** [build] Error 2
>
> Full details of configure.log make.log gcc --version are here,
>
> https://gist.github.com/944295
>
> Any help is greatly appreciated. Thank you for your time!

The attached patch should fix the issue.


--
Igor Sysoev
Index: src/event/modules/ngx_epoll_module.c
===================================================================
--- src/event/modules/ngx_epoll_module.c (revision 3902)
+++ src/event/modules/ngx_epoll_module.c (revision 3903)
@@ -518,7 +518,6 @@
ngx_int_t instance, i;
ngx_uint_t level;
ngx_err_t err;
- ngx_log_t *log;
ngx_event_t *rev, *wev, **queue;
ngx_connection_t *c;

@@ -565,8 +564,6 @@

ngx_mutex_lock(ngx_posted_events_mutex);

- log = cycle->log;
-
for (i = 0; i < events; i++) {
c = event_list[i].data.ptr;

@@ -587,25 +584,21 @@
continue;
}

-#if (NGX_DEBUG0)
- log = c->log ? c->log : cycle->log;
-#endif
-
revents = event_list[i].events;

- ngx_log_debug3(NGX_LOG_DEBUG_EVENT, log, 0,
+ ngx_log_debug3(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
"epoll: fd:%d ev:%04XD d:%p",
c->fd, revents, event_list[i].data.ptr);

if (revents & (EPOLLERR|EPOLLHUP)) {
- ngx_log_debug2(NGX_LOG_DEBUG_EVENT, log, 0,
+ ngx_log_debug2(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
"epoll_wait() error on fd:%d ev:%04XD",
c->fd, revents);
}

#if 0
if (revents & ~(EPOLLIN|EPOLLOUT|EPOLLERR|EPOLLHUP)) {
- ngx_log_error(NGX_LOG_ALERT, log, 0,
+ ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
"strange epoll_wait() events fd:%d ev:%04XD",
c->fd, revents);
}
Index: src/core/ngx_resolver.c
===================================================================
--- src/core/ngx_resolver.c (revision 3902)
+++ src/core/ngx_resolver.c (revision 3903)
@@ -1422,7 +1422,7 @@
in_addr_t addr;
ngx_int_t digit;
ngx_str_t name;
- ngx_uint_t i, mask, qtype, qclass, qident;
+ ngx_uint_t i, mask, qident;
ngx_resolver_an_t *an;
ngx_resolver_ctx_t *ctx, *next;
ngx_resolver_node_t *rn;
@@ -1514,12 +1514,12 @@

an = (ngx_resolver_an_t *) &buf[i + 2];

- qtype = (an->type_hi << 8) + an->type_lo;
- qclass = (an->class_hi << 8) + an->class_lo;
len = (an->len_hi << 8) + an->len_lo;

ngx_log_debug3(NGX_LOG_DEBUG_CORE, r->log, 0,
- "resolver qt:%ui cl:%ui len:%uz", qtype, qclass, len);
+ "resolver qt:%ui cl:%ui len:%uz",
+ (an->type_hi << 8) + an->type_lo,
+ (an->class_hi << 8) + an->class_lo, len);

i += 2 + sizeof(ngx_resolver_an_t);

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