Enable PCRE2 by default.

There are 2 major versions of the PCRE library, PCRE and PCRE2. Rspamd
supports both and current default is the former. But according to the
web page of PCRE library it has reached its end of life. So change the
default to the latter.

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7af24c5eef15117a175a8fd7ea1a39ff9be4c76c..c4d7880689184d357a45a1b56a3444913ee6faad 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -51,7 +51,7 @@ OPTION(INSTALL_WEBUI       "Install web interface [default: ON]"
 OPTION(WANT_SYSTEMD_UNITS  "Install systemd unit files on Linux [default: OFF]" OFF)
 OPTION(ENABLE_SNOWBALL     "Enable snowball stemmer [default: ON]"              ON)
 OPTION(ENABLE_CLANG_PLUGIN "Enable clang static analysing plugin [default: OFF]" OFF)
-OPTION(ENABLE_PCRE2        "Enable pcre2 instead of pcre  [default: OFF]"         OFF)
+OPTION(ENABLE_PCRE2        "Enable pcre2 instead of pcre  [default: ON]"         ON)
 OPTION(ENABLE_JEMALLOC     "Build rspamd with jemalloc allocator  [default: OFF]" OFF)
 OPTION(ENABLE_UTILS        "Build rspamd internal utils [default: OFF]" OFF)
 OPTION(ENABLE_LIBUNWIND    "Use libunwind to print crash traces [default: OFF]" OFF)