[#4085] Proposed fix for 1.66

diff --git a/doc/sphinx/arm/install.rst b/doc/sphinx/arm/install.rst
index fe532640af3844641a729dcc9b471735bbd1545b..b13b89dacbed45c090cc95711c69c2b41a51d227 100644 (file)
--- a/doc/sphinx/arm/install.rst
+++ b/doc/sphinx/arm/install.rst
@@ -159,10 +159,8 @@ the system:
 
 -  The development tools meson, ninja, and pkg-config.
 
--  Boost C++ libraries (https://www.boost.org/). The oldest Boost version
-   used for testing is 1.71 (although Kea may also work with older
-   versions e.g. 1.69). The Boost system library must also be installed.
-   Installing a header-only version of Boost is not recommended.
+-  Boost C++ libraries (https://www.boost.org/) (at least version 1.66).
+   On versions before 1.69 the Boost system library must also be installed.
 
 -  OpenSSL (at least version 1.0.2) or Botan (at least version 2).
    OpenSSL version 1.1.1 or later is strongly recommended.

diff --git a/meson.build b/meson.build
index 68ebc1b3a75d03e05b65545a85500e2ea4ed1983..980fdaa67fc20f7e01dcd7a28a91bada664df9e2 100644 (file)
--- a/meson.build
+++ b/meson.build
@@ -189,7 +189,10 @@ message(f'Detected system "@SYSTEM@".')
 
 #### Dependencies
 
-boost_dep = dependency('boost', version: '>=1.69')
+boost_dep = dependency('boost', version: '>=1.69', required: false)
+if not boost_dep.found()
+    boost_dep = dependency('boost', version: '>=1.66', modules: ['system'])
+endif
 dl_dep = dependency('dl')
 threads_dep = dependency('threads')
 add_project_dependencies(boost_dep, dl_dep, threads_dep, language: ['cpp'])