[INFRA] Bump to C++23

.github/workflows/ci_linux.yml

@@ -32,7 +32,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        compiler: ["clang-18", "clang-17", "gcc-14", "gcc-13", "gcc-12", "gcc-11", "intel"]
+        compiler: ["clang-18", "clang-17", "gcc-14", "gcc-13", "gcc-12", "intel"]
     container:
       image: ghcr.io/seqan/${{ matrix.compiler }}
       volumes:

.github/workflows/ci_macos.yml

@@ -32,7 +32,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        compiler: ["clang-18", "clang-17", "gcc-14", "gcc-13", "gcc-12", "gcc-11"]
+        compiler: ["clang-18", "clang-17", "gcc-14", "gcc-13", "gcc-12"]
     steps:
       - name: Checkout
         uses: actions/checkout@v4

.github/workflows/ci_misc.yml

@@ -40,8 +40,8 @@ jobs:
             use_include_dependencies: "OFF"
             cxx_flags: "-stdlib=libc++"
 
-          - name: "Snippet gcc11"
-            compiler: "gcc-11"
+          - name: "Snippet gcc12"
+            compiler: "gcc-12"
             build: snippet
             build_type: Release
             use_include_dependencies: "OFF"
@@ -53,8 +53,8 @@ jobs:
             use_include_dependencies: "OFF"
             cxx_flags: "-stdlib=libc++"
 
-          - name: "Performance gcc11"
-            compiler: "gcc-11"
+          - name: "Performance gcc12"
+            compiler: "gcc-12"
             build: performance
             build_type: Release
             use_include_dependencies: "OFF"
@@ -72,8 +72,8 @@ jobs:
             build_type: Release
             use_include_dependencies: "OFF"
 
-          - name: "Header gcc11"
-            compiler: "gcc-11"
+          - name: "Header gcc12"
+            compiler: "gcc-12"
             build: header
             build_type: Release
             use_include_dependencies: "OFF"
@@ -85,7 +85,7 @@ jobs:
             use_include_dependencies: "ON"
 
           - name: "Tutorial"
-            compiler: "gcc-11"
+            compiler: "gcc-12"
             build: tutorial
             build_type: Debug
             use_include_dependencies: "OFF"

cmake/CPM.cmake

@@ -2,8 +2,8 @@
 #
 # SPDX-FileCopyrightText: Copyright (c) 2019-2023 Lars Melchior and contributors
 
-set (CPM_DOWNLOAD_VERSION 0.38.6)
-set (CPM_HASH_SUM "11c3fa5f1ba14f15d31c2fb63dbc8628ee133d81c8d764caad9a8db9e0bacb07")
+set (CPM_DOWNLOAD_VERSION 0.40.2)
+set (CPM_HASH_SUM "c8cdc32c03816538ce22781ed72964dc864b2a34a310d3b7104812a5ca2d835d")
 
 if (CPM_SOURCE_CACHE)
     set (CPM_DOWNLOAD_LOCATION "${CPM_SOURCE_CACHE}/cpm/CPM_${CPM_DOWNLOAD_VERSION}.cmake")

cmake/configuration.cmake

@@ -79,43 +79,42 @@ include ("${HIBF_SOURCE_DIR}/test/cmake/hibf_require_ccache.cmake")
 hibf_require_ccache ()
 
 # ----------------------------------------------------------------------------
-# Require C++20
+# Require C++23
 # ----------------------------------------------------------------------------
 
 set (CMAKE_REQUIRED_FLAGS_SAVE ${CMAKE_REQUIRED_FLAGS})
 
 set (CXXSTD_TEST_SOURCE
-     "#if !defined (__cplusplus) || (__cplusplus < 202002)
-      #error NOCXX20
+     "#if !defined (__cplusplus) || (__cplusplus < 202100)
+      #error NOCXX23
       #endif
       int main() {}")
 
-set (HIBF_FEATURE_CPP20_FLAG_BUILTIN "")
-set (HIBF_FEATURE_CPP20_FLAG_STD20 "-std=c++20")
-set (HIBF_FEATURE_CPP20_FLAG_STD2a "-std=c++2a")
+set (HIBF_FEATURE_CPP23_FLAG_BUILTIN "")
+set (HIBF_FEATURE_CPP23_FLAG_STD23 "-std=c++23")
 
-set (HIBF_CPP20_FLAG "")
+set (HIBF_CPP23_FLAG "")
 
-foreach (_FLAG BUILTIN STD20 STD2a)
-    set (CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS_SAVE} ${HIBF_FEATURE_CPP20_FLAG_${_FLAG}}")
+foreach (_FLAG BUILTIN STD23)
+    set (CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS_SAVE} ${HIBF_FEATURE_CPP23_FLAG_${_FLAG}}")
 
-    check_cxx_source_compiles ("${CXXSTD_TEST_SOURCE}" CPP20_FLAG_${_FLAG})
+    check_cxx_source_compiles ("${CXXSTD_TEST_SOURCE}" CPP23_FLAG_${_FLAG})
 
-    if (CPP20_FLAG_${_FLAG})
-        set (HIBF_CPP20_FLAG ${_FLAG})
+    if (CPP23_FLAG_${_FLAG})
+        set (HIBF_CPP23_FLAG ${_FLAG})
         break ()
     endif ()
 endforeach ()
 
 set (CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS_SAVE})
 
-if (HIBF_CPP20_FLAG STREQUAL "BUILTIN")
-    hibf_config_print ("C++ Standard-20 support:    builtin")
-elseif (HIBF_CPP20_FLAG)
-    set (HIBF_CXX_FLAGS "${HIBF_CXX_FLAGS} ${HIBF_FEATURE_CPP20_FLAG_${HIBF_CPP20_FLAG}}")
-    hibf_config_print ("C++ Standard-20 support:    via ${HIBF_FEATURE_CPP20_FLAG_${HIBF_CPP20_FLAG}}")
+if (HIBF_CPP23_FLAG STREQUAL "BUILTIN")
+    hibf_config_print ("C++ Standard-23 support:    builtin")
+elseif (HIBF_CPP23_FLAG)
+    set (HIBF_CXX_FLAGS "${HIBF_CXX_FLAGS} ${HIBF_FEATURE_CPP23_FLAG_${HIBF_CPP23_FLAG}}")
+    hibf_config_print ("C++ Standard-23 support:    via ${HIBF_FEATURE_CPP23_FLAG_${HIBF_CPP23_FLAG}}")
 else ()
-    hibf_config_error ("HIBF requires C++20, but your compiler does not support it.")
+    hibf_config_error ("HIBF requires C++23, but your compiler does not support it.")
 endif ()
 
 # ----------------------------------------------------------------------------

cmake/package-lock.cmake

@@ -31,7 +31,7 @@ CPMDeclarePackage (benchmark
 # googletest
 set (HIBF_GOOGLETEST_VERSION 1.14.0)
 CPMDeclarePackage (googletest
-                   NAME GTest
+                   NAME googletest
                    VERSION ${HIBF_GOOGLETEST_VERSION}
                    GITHUB_REPOSITORY google/googletest
                    SYSTEM TRUE

include/hibf/platform.hpp

@@ -66,13 +66,9 @@
 // ============================================================================
 
 #if HIBF_COMPILER_IS_GCC
-#    if (__GNUC__ < 11)
-#        error "At least GCC 11 is needed."
-#    endif // (__GNUC__ < 11)
-
-#    if (__GNUC__ == 11 && __GNUC_MINOR__ <= 3)
-#        pragma warning "Be aware that GCC < 11.4 might have bugs that cause compile failure."
-#    endif // (__GNUC__ == 11 && __GNUC_MINOR__ <= 3)
+#    if (__GNUC__ < 12)
+#        error "At least GCC 12 is needed."
+#    endif // (__GNUC__ < 12)
 
 #    if (__GNUC__ == 12 && __GNUC_MINOR__ <= 2)
 #        pragma warning "Be aware that GCC < 12.3 might have bugs that cause compile failure."
@@ -100,10 +96,9 @@
 #endif
 
 // C++ standard [required]
-// Note: gcc10 -std=c++20 still defines __cplusplus=201709
 #ifdef __cplusplus
-#    if (__cplusplus < 201709)
-#        error "C++20 is required, make sure that you have set -std=c++20."
+#    if (__cplusplus < 202100)
+#        error "C++23 is required, make sure that you have set -std=c++23."
 #    endif
 #else
 #    error "This is not a C++ compiler."

util/CMakeLists.txt

@@ -27,4 +27,4 @@ list (APPEND CMAKE_PREFIX_PATH "${sharg_SOURCE_DIR}/build_system")
 find_package (sharg 1.0 REQUIRED)
 
 add_executable (fpr_correction_check fpr_correction_check.cpp)
-target_link_libraries (fpr_correction_check seqan::hibf sharg::sharg)
+target_link_libraries (fpr_correction_check sharg::sharg seqan::hibf)