Revert "feat: C++ 17 compatibility"

This reverts commit 6c2a269.

CMakeLists.txt

@@ -21,7 +21,6 @@ OPTION (BUILD_PYTHON_BINDINGS "Build Python bindings." ON)
 OPTION (BUILD_CODE_COVERAGE "Build code coverage" OFF)
 OPTION (BUILD_DOCUMENTATION "Build documentation" OFF)
 OPTION (BUILD_WITH_DEBUG_SYMBOLS "Build with debug symbols" ON)
-OPTION (BUILD_WITH_CXX_17 "Build with C++ 17 support." OFF)
 
 ## Setup
 
@@ -127,44 +126,9 @@ IF (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
 
 ENDIF ()
 
-### C++ 17/20 support
-
-IF (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
-
-    IF (BUILD_WITH_CXX_17)
-
-        SET (CMAKE_CXX_STANDARD 17)
-
-        MESSAGE (STATUS "C++17 support enabled")
-
-        IF (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 7.0)
-
-            MESSAGE (FATAL_ERROR "GCC version must be at least 7.0")
-
-        ENDIF ()
-
-    ELSE ()
-
-        MESSAGE (STATUS "C++20 support enabled")
-
-        SET (CMAKE_CXX_STANDARD 20)
-
-        IF (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 13.0)
-
-            MESSAGE (FATAL_ERROR "GCC version must be at least 13.0")
-
-        ENDIF ()
-
-    ENDIF ()
-
-    SET (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Wpedantic -Wshadow -Wno-deprecated")
-
-ELSE ()
-
-    SET (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Wpedantic -Wshadow")
-
-ENDIF ()
+### C++ 20 support
 
+SET (CMAKE_CXX_STANDARD 20)
 SET (CMAKE_CXX_STANDARD_REQUIRED ON)
 SET (CMAKE_CXX_EXTENSIONS OFF)
 

docker/development/Dockerfile

@@ -16,20 +16,6 @@ RUN apt-get update \
     && apt-get install -y jq \
     && rm -rf /var/lib/apt/lists/*
 
-## fmt
-
-ARG FMT_VERSION="5.2.0"
-
-RUN cd /tmp \
-    && git clone --branch ${FMT_VERSION} --depth 1 https://github.com/fmtlib/fmt.git \
-    && cd fmt \
-    && mkdir build \
-    && cd build \
-    && cmake -DCMAKE_POSITION_INDEPENDENT_CODE=TRUE .. \
-    && make --silent -j $(nproc) \
-    && make install \
-    && rm -rf /tmp/fmt
-
 ## libcurl
 
 RUN apt-get update -y \