nginx 交叉编译及上传大文件处理

1、编译工具链

Hi3559A aarch64-himix100-linux

2、编译依赖

nginx依赖以下模块：

zlib 库（zlib-1.2.11）：http://www.zlib.net/

pcre 库（pcre-8.42）：http://www.pcre.org/

openssl库（openssl-1.1.0h）：http://www.openssl.org/source/

nginx（nginx-1.14.2）：http://nginx.org/en/download.html

Nginx upload module：Nginx upload module下载

3、编译

暂时未加入zlib

configure配置参照：http://www.ttlsa.com/nginx/nginx-configure-descriptions/

configure配置：

./configure --prefix=./ --with-http_ssl_module --with-cc=/opt/hisi-linux/x86-arm/aarch64-himix100-linux/host_bin/aarch64-linux-gnu-gcc --with-cpp=/opt/hisi-linux/x86-arm/aarch64-himix100-linux/host_bin/aarch64-linux-gnu-cpp --with-pcre=pcre-8.42 --with-openssl=openssl-1.1.0h --without-http_gzip_module --without-http_upstream_zone_module --add-module=nginx-rtmp-module --add-module=nginx-upload-module

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make -j4

填坑参照：https://www.jianshu.com/p/5d9b60f7b262

踩坑一，configure的时候报错

checking for C compiler ... found but is not working
./configure: error: C compiler aarch64-himix100-linux-gcc is not found

这是因为nginx编译的时候除了检查cc是否存在，还需要执行编译后的程序。很明显交叉编译的程序无法执行。解决办法

vi auto/cc/name

    ngx_feature="C compiler"
    ngx_feature_name=
    ngx_feature_run=yes
   ==> ngx_feature_run=no

踩坑二，configure的时候报错

checking for int size ...objs/autotest: 1: objs/autotest: Syntax error: word unexpected (expecting ")")
bytes
./configure: error: can not detect int size

同样也是因为cc编译后的程序无法本地执行导致。解决办法

vi auto/types/sizeof

ngx_test="$CC $CC_TEST_FLAGS $CC_AUX_FLAGS \
   ==> ngx_test="gcc $CC_TEST_FLAGS $CC_AUX_FLAG \

if [ -x $NGX_AUTOTEST ]; then
    ngx_size=`$NGX_AUTOTEST`
   ==>    ngx_size=4

踩坑三，make的时候报错

cd /home/src/pcre-8.42
&& if [ -f Makefile ]; then make distclean; fi
&& CC="aarch64-himix100-linux-gcc" CFLAGS="--host=aarch64-himix100-linux -pipe"
./configure --disable-shared
...
configure: error: in `/home/src/pcre-8.42':
configure: error: C compiler cannot create executables

这是因为编译pcre的时候，nginx没有正确设置交叉编译链。解决

vi auto/options

PCRE_CONF_OPT=
   ==> PCRE_CONF_OPT=--host=aarch64-himix100-linux

踩坑四，make的时候报错

src/core/ngx_rwlock.c:125:2: error: #error ngx_atomic_cmp_set() is not defined!

报错的地方，nginx的源码是这样的

#if (NGX_HTTP_UPSTREAM_ZONE || NGX_STREAM_UPSTREAM_ZONE)

#error ngx_atomic_cmp_set() is not defined!

#endif

解决办法，在configure的时候加上--without-http_upstream_zone_module

踩坑五，make的时候报错

src/os/unix/ngx_errno.c: In function ‘ngx_strerror’:
src/os/unix/ngx_errno.c:37:31: error: ‘NGX_SYS_NERR’ undeclared (first use in this function)
msg = ((ngx_uint_t) err < NGX_SYS_NERR) ? &ngx_sys_errlist[err]:

出错的原因仍然是因为交叉编译程序无法本地运行，导致NGX_SYS_NERR宏没有赋值。解决办法，手动编辑 objs/ngx_auto_config.h，加上

#ifndef NGX_SYS_NERR
#define NGX_SYS_NERR  132
#endif

踩坑六，make的时候报错

/home/src/openssl-OpenSSL_1_1_0i/.openssl/lib/libssl.a: error adding symbols: File format not recognized
collect2: error: ld returned 1 exit status
objs/Makefile:236: recipe for target 'objs/nginx' failed

这是SSL编译的时候调用了x86的gcc，而非交叉编译gcc导致的。解决办法
vi auto/lib/openssl/make

&& ./config --prefix=$ngx_prefix no-shared no-threads $OPENSSL_OPT \
改为
&& ./Configure --prefix=$ngx_prefix no-shared no-threads --cross-compile-prefix=aarch64-himix100-linux- linux-generic64 \

踩坑七，make的时候报错

objs/src/core/ngx_cycle.o: In function 'ngx_init_cycle':
/home/src/nginx-1.14.0/src/core/ngx_cycle.c:476: undefined reference to 'ngx_shm_alloc'
/home/src/nginx-1.14.0/src/core/ngx_cycle.c:685: undefined reference to 'ngx_shm_free'

解决办法
vi objs/ngx_auto_config.h

#ifndef NGX_HAVE_SYSVSHM
#define NGX_HAVE_SYSVSHM 1
#endif

4、 upload module使用

http {
......
server {
listen 80;
server_name localhost;

#charset koi8-r;

#access_log logs/host.access.log main;

   location / {
add_header Access-Control-Allow-Origin *;
root /mtd/seemmo/programs/web;
index index.html index.htm;
}
# upload file
location /upload_file {
           # 转到后台处理URL
           #upload_pass /uploadHandle;
           # 文件上传以后转交给后端的php代码处理
           # 这个位置是否是文章上传成功到指定目录后戳发后台处理的地址
           upload_pass /uploadvideosBackendDispose;

           # 临时保存路径可以使用散列
           upload_store /tmp/data/videos/;
           # 上传文件的权限，rw表示读写 r只读
           upload_store_access user:rw;

           # 这里写入http报头，pass到后台页面后能获取这里set的报头字段
           upload_set_form_field "${upload_field_name}_name" $upload_file_name;
           upload_set_form_field "${upload_field_name}_content_type" $upload_content_type;
           upload_set_form_field "${upload_field_name}_path" $upload_tmp_path;

           # Upload模块自动生成的一些信息，如文件大小与文件md5值
           upload_aggregate_form_field "${upload_field_name}_md5" $upload_file_md5;
           upload_aggregate_form_field "${upload_field_name}_size" $upload_file_size;

           # 允许的字段，允许全部可以 "^.*$"
           #upload_pass_form_field "^submit$|^description$";
           upload_pass_form_field "^.*$";

           # 每秒字节速度控制，0表示不受控制，默认0
           upload_limit_rate 0;
           # 如果pass页面是以下状态码，就删除此次上传的临时文件
           upload_cleanup 400 404 499 500-505;
       }
       # 将请求转到后端的地址处理
       location /uploadvideosBackendDispose {
           proxy_pass http://web.com/app/demo_pac/upload_handler/upload_videos;
       }
}

}