Upgrade build to use CMake 3.26

[jkoritzinsky]

Continuation of #103088 for .NET 11 (because of RHEL9, our maximum CMake version is still 3.26)

Blocked on dotnet/dotnet-buildtools-prereqs-docker#1520

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[Copilot]

Pull Request Overview

This PR upgrades the minimum required CMake version from 3.20 to 3.26 across the dotnet/runtime repository. This enables the use of newer CMake features and aligns with the project's infrastructure requirements for .NET 11, with the version constraint determined by RHEL9 compatibility.

Key changes include:

• Updating cmake_minimum_required directives throughout the codebase
• Modernizing CMake syntax to use newer features available in 3.26
• Updating build infrastructure and documentation

Reviewed Changes

Copilot reviewed 36 out of 36 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/coreclr/CMakeLists.txt	Updated minimum CMake version to 3.26
src/mono/CMakeLists.txt	Updated minimum CMake version and replaced /Zi with CMAKE_MSVC_DEBUG_INFORMATION_FORMAT
src/native/corehost/CMakeLists.txt	Updated minimum CMake version to 3.26
src/native/libs/CMakeLists.txt	Updated minimum CMake version to 3.26
src/tests/CMakeLists.txt	Updated minimum CMake version to 3.26
eng/native/configurecompiler.cmake	Modernized linker option syntax and added support for newer CMake features
eng/native/configureplatform.cmake	Replaced manual Linux ID detection with cmake_host_system_information
eng/native/functions.cmake	Removed obsolete compile_asm function no longer needed with CMake 3.26
src/coreclr/dlls/mscoree/coreclr/CMakeLists.txt	Replaced manual whole-archive handling with $<LINK_LIBRARY:WHOLE_ARCHIVE>
src/native/corehost/apphost/static/CMakeLists.txt	Replaced manual whole-archive handling with $<LINK_LIBRARY:WHOLE_ARCHIVE>
src/coreclr/ilasm/CMakeLists.txt	Replaced start/end group syntax with $<LINK_GROUP:RESCAN>
src/coreclr/ildasm/exe/CMakeLists.txt	Removed manual library group handling and updated linker options
src/coreclr/dlls/mscordac/CMakeLists.txt	Replaced start/end group syntax with $<LINK_GROUP:RESCAN> and $<LINK_LIBRARY:WHOLE_ARCHIVE>
src/coreclr/jit/CMakeLists.txt	Updated linker flag syntax to use add_link_options(LINKER:-Bsymbolic)
src/coreclr/vm/wks/CMakeLists.txt	Removed obsolete compile_asm calls for Visual Studio generator
src/coreclr/nativeaot/Runtime/Full/CMakeLists.txt	Removed obsolete compile_asm calls and introduced Runtime.AsmHelpers object library
src/coreclr/debug/ee/wks/CMakeLists.txt	Removed obsolete compile_asm calls and removed /Zi from ASM_OPTIONS
src/native/libs/System.Security.Cryptography.Native/CMakeLists.txt	Updated CMake version range upper bound to 3.26
src/native/libs/System.Globalization.Native/CMakeLists.txt	Updated CMake version range upper bound to 3.26
src/libraries/tests.proj	Updated generated CMakeLists.txt templates to require CMake 3.26
docs/workflow/requirements/*.md	Updated documentation to reflect CMake 3.26 minimum requirement
eng/pipelines/common/*.yml	Updated container images to use Debian 13 with GCC 15

[jkoritzinsky]

/ba-g ARM64 queue is on the floor. WBT failure unrelated.

[hoyosjs]

rescan and whole archive make sense - just need to get a build to make sure we don't regress this again.