Issues building Nginx using boringssl

[Sergey Kandaurov]

> On 20 Feb 2024, at 09:22, 杨金泽 <rttwyjz at gmail.com> wrote:
> 
> Hello,
> I encountered the following error when using boringssl to build Nginx:
> checking for OpenSSL library ... not found
> checking for OpenSSL library in /usr/local/ ... not found
> checking for OpenSSL library in /usr/pkg/ ... not found
> checking for OpenSSL library in /opt/local/ ... not found
> ./auto/configure: error: SSL modules require the OpenSSL library.
> You can either do not enable the modules, or install the OpenSSL library
> into the system, or build the OpenSSL library statically from the source
> with nginx by using --with-openssl=<path> option.

Regardless of a pilot error (trimmed), there is indeed a breaking
change in BoringSSL, which now expects C++ runtime environment in
libssl, see git revision c52806157c97105da7fdc2b021d0a0fcd5186bf3,
which basically means it can no longer be used in pure C programs.
Someday they will hopefully fix that, meanwhile you may want to:
- switch to C++ linker as described in the revision;
- build libssl as a shared library (see BUILDING.md in sources);
- use some other workarounds when linking with BoringSSL statically,
  such as explicit linking with libstdc++/libc++.

-- 
Sergey Kandaurov