[njs] Added description for recently added configure options.

[Dmitry Volyntsev]

details:   https://hg.nginx.org/njs/rev/001bb59dc3a8
branches:  
changeset: 1794:001bb59dc3a8
user:      Dmitry Volyntsev <xeioex at nginx.com>
date:      Wed Dec 29 16:03:13 2021 +0000
description:
Added description for recently added configure options.

diffstat:

 auto/help |  15 +++++++++++++++
 1 files changed, 15 insertions(+), 0 deletions(-)

diffs (25 lines):

diff -r e172cd35cb8c -r 001bb59dc3a8 auto/help
--- a/auto/help	Wed Dec 29 16:03:12 2021 +0000
+++ b/auto/help	Wed Dec 29 16:03:13 2021 +0000
@@ -14,6 +14,21 @@ default: "$NJS_CC_OPT"
 default: "$NJS_LD_OPT"
   --ar=FILE                 set static linking program, default: "$AR"
 
+  --no-pcre                 disables PCRE/PCRE2 discovery for RegExp
+                            backend. This flag allows to build PCRE/PCRE2
+                            outside of libnjs.a.  When this option is enabled
+                            functions described in njs_regex.h are not built.
+                            Instead this functions are expected to be provided
+                            while linking.
+
+  --no-pcre2                disables PCRE2 discovery for RegExp backend.
+                            When this option is enabled only PCRE library
+                            is discovered.
+
+  --no-openssl              disables OpenSSL discovery. When this option is
+                            enabled OpenSSL dependant code is not built as a
+                            part of libnjs.a.
+
   --address-sanitizer=YES   enables build with address sanitizer, \
 default: "$NJS_ADDRESS_SANITIZER"
   --debug=YES               enables additional runtime checks, \