From: Joel Rosdahl <joel@rosdahl.net>
Date: Tue, 3 Feb 2026 19:26:45 +0000 (+0100)
Subject: chore: Bump required compiler versions
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fac62b7ac5faaff9b137a8f0ff47045dfc3a36c3;p=thirdparty%2Fccache.git

chore: Bump required compiler versions
---

diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 0662ccbb..4be4b2df 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -102,13 +102,6 @@ jobs:
               # The -multilib packages are only available on x86.
               sudo apt-get install -y g++-${{ matrix.version }}-multilib
             fi
-            if [ "${{ matrix.version }}" = 8 ]; then
-              # The compilation test in StdFilesystem.cmake doesn't work when
-              # GCC 9 is installed as well, so need to force linking with
-              # libstdc++fs for GCC 8. Note: This requires using -fuse-ld=lld to
-              # work.
-              echo "LDFLAGS=-lstdc++fs" >> $GITHUB_ENV
-            fi
           else
             echo "CC=clang-${{ matrix.version }}" >> $GITHUB_ENV
             echo "CXX=clang++-${{ matrix.version }}" >> $GITHUB_ENV
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9f934fc0..470d4eb0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -26,27 +26,15 @@ list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
 # C++ error messages)
 #
 
-if((CMAKE_CXX_COMPILER_ID STREQUAL "Clang" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 3.8)
-   OR (CMAKE_CXX_COMPILER_ID STREQUAL "GNU" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5)
-   OR (CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 7.0))
+if((CMAKE_CXX_COMPILER_ID STREQUAL "Clang" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 7)
+   OR (CMAKE_CXX_COMPILER_ID STREQUAL "GNU" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 10)
+   OR (CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 10))
   message(
     FATAL_ERROR
     "The compiler you are using is too old, sorry.\n"
     "You need one listed here: https://ccache.dev/platform-compiler-language-support.html")
 endif()
 
-if((CMAKE_CXX_COMPILER_ID STREQUAL "Clang" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4)
-    OR (CMAKE_CXX_COMPILER_ID STREQUAL "GNU" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 6))
-  message(
-    WARNING
-    "The compiler you are using is rather old.\n"
-    "If anything goes wrong you might be better off with one listed here:"
-    " https://ccache.dev/platform-compiler-language-support.html")
-
-  # Warnings from old compilers are probably useless anyway.
-  option(WARNINGS_AS_ERRORS "Treat compiler warnings as errors" FALSE)
-endif()
-
 #
 # Settings
 #
diff --git a/cmake/StandardSettings.cmake b/cmake/StandardSettings.cmake
index f82e2320..430c237d 100644
--- a/cmake/StandardSettings.cmake
+++ b/cmake/StandardSettings.cmake
@@ -58,7 +58,6 @@ if(CMAKE_CXX_COMPILER_ID MATCHES "^GNU|(Apple)?Clang$" AND NOT MSVC)
   endforeach()
 
   include(StdAtomic)
-  include(StdFilesystem)
 elseif(MSVC AND NOT CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
   target_compile_options(standard_settings INTERFACE
       /Zc:__cplusplus
diff --git a/cmake/StdFilesystem.cmake b/cmake/StdFilesystem.cmake
deleted file mode 100644
index ca451ce7..00000000
--- a/cmake/StdFilesystem.cmake
+++ /dev/null
@@ -1,26 +0,0 @@
-# Check if std::filesystem needs -lstdc++fs
-
-include(CheckCXXSourceCompiles)
-
-set(
-  check_std_filesystem_source_code
-  [=[
-    #include <filesystem>
-    int main(void)
-    {
-      return std::filesystem::is_regular_file(\"/\") ? 0 : 1;
-    }
-  ]=])
-
-check_cxx_source_compiles("${check_std_filesystem_source_code}" std_filesystem_without_libfs)
-
-if(NOT std_filesystem_without_libfs)
-  set(CMAKE_REQUIRED_LIBRARIES stdc++fs)
-  check_cxx_source_compiles("${check_std_filesystem_source_code}" std_filesystem_with_libfs)
-  set(CMAKE_REQUIRED_LIBRARIES)
-  if(NOT std_filesystem_with_libfs)
-    message(FATAL_ERROR "Toolchain doesn't support std::filesystem with nor without -lstdc++fs")
-  else()
-    target_link_libraries(standard_settings INTERFACE stdc++fs)
-  endif()
-endif()