File Remove-boost-system-component-from-cmakefiles.patch of Package cadabra2

From 0afcc652660a5c1101de6541b65f6b8869b7ce0a Mon Sep 17 00:00:00 2001
From: Kasper Peeters <kasper.peeters@cadabra.science>
Date: Wed, 24 Sep 2025 18:57:23 +0100
Subject: [PATCH] Remove boost 'system' component from cmakefiles, as this is a
 header-only component now, and the system stub has been removed in boost
 1.89.0.

---
 client_server/CMakeLists.txt   | 2 +-
 core/CMakeLists.txt            | 2 +-
 frontend/common/CMakeLists.txt | 2 +-
 frontend/gtkmm/CMakeLists.txt  | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/client_server/CMakeLists.txt b/client_server/CMakeLists.txt
index 271812ccbe..fe347d2928 100644
--- a/client_server/CMakeLists.txt
+++ b/client_server/CMakeLists.txt
@@ -36,7 +36,7 @@ find_package(Threads)
 # websocket functionality) which was not stable before that version.
 # Actually, it is probably not stable before 1.75.0, but if we go that
 # high we cannot build on Ubuntu 20.04 anymore.
-find_package(Boost 1.71.0 COMPONENTS system program_options date_time filesystem REQUIRED)
+find_package(Boost 1.71.0 COMPONENTS program_options date_time filesystem REQUIRED)
 
 # OpenSSL needs to be linked in explicitly (probably because the boost
 # material referring to it is all in headers?). If you use a cmake module,
diff --git a/core/CMakeLists.txt b/core/CMakeLists.txt
index 7f497a302b..9cc00a4ca0 100644
--- a/core/CMakeLists.txt
+++ b/core/CMakeLists.txt
@@ -34,7 +34,7 @@ configure_file(
 #   # so no linking takes place
 #   set(Boost_USE_STATIC_LIBS   ON)
 # endif()
-find_package(Boost 1.71.0 COMPONENTS system filesystem REQUIRED)
+find_package(Boost 1.71.0 COMPONENTS filesystem REQUIRED)
 message(STATUS "Boost version ${Boost_VERSION}")
 
 # Find glibmm (for base64)
diff --git a/frontend/common/CMakeLists.txt b/frontend/common/CMakeLists.txt
index 9bf9d0a155..e9af827643 100644
--- a/frontend/common/CMakeLists.txt
+++ b/frontend/common/CMakeLists.txt
@@ -16,7 +16,7 @@ endif(POLICY CMP0042)
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/../../cmake/modules")
 
 find_package(Threads)
-find_package(Boost 1.71.0 COMPONENTS system REQUIRED)
+find_package(Boost 1.71.0 REQUIRED)
 set(Boost_USE_STATIC_LIBS OFF)
 set(Boost_USE_MULTITHREADED ON)
 set(Boost_USE_STATIC_RUNTIME OFF)
diff --git a/frontend/gtkmm/CMakeLists.txt b/frontend/gtkmm/CMakeLists.txt
index 191b9fc7d5..01bf560075 100644
--- a/frontend/gtkmm/CMakeLists.txt
+++ b/frontend/gtkmm/CMakeLists.txt
@@ -82,7 +82,7 @@ else()
   find_package(GLIBMM3)
   find_package(GTKMM3)
 endif()
-find_package(Boost 1.71.0 COMPONENTS system REQUIRED)
+find_package(Boost 1.71.0 REQUIRED)
 set(Boost_USE_STATIC_LIBS OFF)
 set(Boost_USE_MULTITHREADED ON)
 set(Boost_USE_STATIC_RUNTIME OFF)
-- 
2.51.0