From: Matthias Maier <tamiko@43-1.org>
Date: Wed, 25 May 2022 23:07:23 +0000 (-0500)
Subject: CMake: Skip expensive boost test
X-Git-Tag: v9.4.0-rc1~140^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=46e19cb45f4d24a255ef445d2505290b089bcfdd;p=dealii.git

CMake: Skip expensive boost test

This has been finally fixed upstream sometime in late 2018 [1], and this
runtime check is very expensive. Let us skip it for a safe, good
version. I have chosen 1.74 semi randomly because it has been released
in 2020 and is the boost version found in Debian 11.

[1] https://github.com/boostorg/serialization/pull/79#issuecomment-439726837
---

diff --git a/cmake/configure/configure_2_boost.cmake b/cmake/configure/configure_2_boost.cmake
index f657345c63..e9f29edd0b 100644
--- a/cmake/configure/configure_2_boost.cmake
+++ b/cmake/configure/configure_2_boost.cmake
@@ -194,7 +194,7 @@ MACRO(FEATURE_BOOST_FIND_EXTERNAL var)
       RESET_CMAKE_REQUIRED()
     ENDIF() # DEAL_II_WITH_ZLIB
 
-    IF(DEAL_II_ALLOW_PLATFORM_INTROSPECTION)
+    IF(${BOOST_VERSION} VERSION_LESS 1.74.0 AND DEAL_II_ALLOW_PLATFORM_INTROSPECTION)
       #
       # Test that Boost.Serialization is usable.
       #