From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Thu, 31 Oct 2024 23:02:23 +0000 (-0600)
Subject: Improve a cmake variable doc string.
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F17823%2Fhead;p=dealii.git

Improve a cmake variable doc string.
---

diff --git a/cmake/setup_cached_variables.cmake b/cmake/setup_cached_variables.cmake
index 788e68a826..b3fc8b9e5d 100644
--- a/cmake/setup_cached_variables.cmake
+++ b/cmake/setup_cached_variables.cmake
@@ -154,7 +154,7 @@ set(CMAKE_CONFIGURATION_TYPES "${CMAKE_BUILD_TYPE}")
 #
 
 option(DEAL_II_ALLOW_PLATFORM_INTROSPECTION
-  "Allow platform introspection for CPU command sets, SSE and AVX"
+  "Allow platform introspection, i.e., allow the compiler to query the CPU instruction set available on the current machine (e.g., whether the CPU supports the SSE or AVX vector instructions) and to compile for that instruction set. This generally results in faster code, but code that may not run on other machines (including, for example, machines that may use the same file system on which you are working, but have an older CPU architecture)."
   ON
   )
 mark_as_advanced(DEAL_II_ALLOW_PLATFORM_INTROSPECTION)