compiling error if mail_ssl_module is enabled and http_ssl is disabled

[chobits]

How to reproduce:

$ ./configure \
 --with-mail \
 --with-mail_ssl_module \
 --add-module=/ngx_openresty-1.7.4.1/bundle/ngx_devel_kit-0.2.19 \
 --add-module=/ngx_openresty-1.7.4.1/bundle/set-misc-nginx-module-0.26

$ make
...
objs/addon/src/ngx_http_set_misc_module.o:(.data+0x728): undefined reference to `ngx_http_set_misc_set_hmac_sha1'
collect2: ld returned 1 exit status
make[1]: *** [objs/nginx] Error 1
make[1]: Leaving directory `/ngx_openresty-1.7.4.1/bundle/nginx-1.7.4'
make: *** [build] Error 2

If mail_ssl_module is enabled and http_ssl_module is not enabled with command ./configure,
nginx configure script will run set-misc-nginx-module/config before running script as following in auto/module:

if [ $MAIL_SSL = YES ]; then
    have=NGX_MAIL_SSL . auto/have
    USE_OPENSSL=YES
fi

In set-misc-nginx-module/config, it will not add ngx_http_set_hmac.c to $NGX_ADDON_SRCS because $USE_OPENSSL is "NO" by this time.

[agentzh]

@chobits Thank you for the report! Just fixed in git master. Will you try it out?

[chobits]

hi @agentzh ,
I have tested c45ad38, and it works well with following case:

1. enbale http ssl module, disable mail ssl module
2. enable http ssl module & mail ssl module
3. disable http ssl module, enable mail ssl module
4. disable http ssl module & mail ssl module