Remove build logic for unsupported compilers

CMakeLists.txt

@@ -201,14 +201,7 @@ endif()
 # Visual C++: remove warnings regarding SL security and algorithms on pointers
 if(SFML_COMPILER_MSVC)
     # add an option to choose whether PDB debug symbols should be generated (defaults to true when possible)
-    if(CMAKE_VERSION VERSION_LESS 3.1)
-        sfml_set_option(SFML_GENERATE_PDB FALSE BOOL "True to generate PDB debug symbols, FALSE otherwise. Requires CMake 3.1.")
-        if(SFML_GENERATE_PDB)
-            message(FATAL_ERROR "Generation of PDB files (SFML_GENERATE_PDB) requires at least CMake 3.1.0")
-        endif()
-    else()
-        sfml_set_option(SFML_GENERATE_PDB TRUE BOOL "True to generate PDB debug symbols, FALSE otherwise. Requires CMake 3.1.")
-    endif()
+    sfml_set_option(SFML_GENERATE_PDB TRUE BOOL "True to generate PDB debug symbols, FALSE otherwise. Requires CMake 3.1.")
 
     add_definitions(-D_CRT_SECURE_NO_DEPRECATE -D_SCL_SECURE_NO_WARNINGS)
 endif()
@@ -429,18 +422,14 @@ if(SFML_OS_WINDOWS)
         # install the binaries of SFML dependencies
         if(ARCH_32BITS)
             install(DIRECTORY extlibs/bin/x86/ DESTINATION ${CMAKE_INSTALL_BINDIR})
-            if(SFML_COMPILER_MSVC AND SFML_MSVC_VERSION LESS 14)
-                install(DIRECTORY extlibs/libs-msvc/x86/ DESTINATION ${CMAKE_INSTALL_LIBDIR})
-            elseif(SFML_COMPILER_MSVC OR (SFML_COMPILER_CLANG AND NOT MINGW))
+            if(SFML_COMPILER_MSVC OR (SFML_COMPILER_CLANG AND NOT MINGW))
                 install(DIRECTORY extlibs/libs-msvc-universal/x86/ DESTINATION ${CMAKE_INSTALL_LIBDIR})
             else()
                 install(DIRECTORY extlibs/libs-mingw/x86/ DESTINATION ${CMAKE_INSTALL_LIBDIR})
             endif()
         elseif(ARCH_64BITS)
             install(DIRECTORY extlibs/bin/x64/ DESTINATION ${CMAKE_INSTALL_BINDIR})
-            if(SFML_COMPILER_MSVC AND SFML_MSVC_VERSION LESS 14)
-                install(DIRECTORY extlibs/libs-msvc/x64/ DESTINATION ${CMAKE_INSTALL_LIBDIR})
-            elseif(SFML_COMPILER_MSVC OR (SFML_COMPILER_CLANG AND NOT MINGW))
+            if(SFML_COMPILER_MSVC OR (SFML_COMPILER_CLANG AND NOT MINGW))
                 install(DIRECTORY extlibs/libs-msvc-universal/x64/ DESTINATION ${CMAKE_INSTALL_LIBDIR})
             else()
                 install(DIRECTORY extlibs/libs-mingw/x64/ DESTINATION ${CMAKE_INSTALL_LIBDIR})

cmake/Macros.cmake

@@ -11,8 +11,8 @@ endmacro ()
 # set the appropriate standard library on each platform for the given target
 # example: sfml_set_stdlib(sfml-system)
 function(sfml_set_stdlib target)
-    # for gcc >= 4.0 on Windows, apply the SFML_USE_STATIC_STD_LIBS option if it is enabled
-    if(SFML_OS_WINDOWS AND SFML_COMPILER_GCC AND NOT SFML_GCC_VERSION VERSION_LESS "4")
+    # for gcc on Windows, apply the SFML_USE_STATIC_STD_LIBS option if it is enabled
+    if(SFML_OS_WINDOWS AND SFML_COMPILER_GCC)
         if(SFML_USE_STATIC_STD_LIBS AND NOT SFML_COMPILER_GCC_TDM)
             target_link_libraries(${target} PRIVATE "-static-libgcc" "-static-libstdc++")
         elseif(NOT SFML_USE_STATIC_STD_LIBS AND SFML_COMPILER_GCC_TDM)
@@ -153,9 +153,9 @@ macro(sfml_add_library target)
         endif()
     endif()
 
-    # if using gcc >= 4.0 or clang >= 3.0 on a non-Windows platform, we must hide public symbols by default
+    # if using gcc or clang on a non-Windows platform, we must hide public symbols by default
     # (exported ones are explicitly marked)
-    if(NOT SFML_OS_WINDOWS AND ((SFML_COMPILER_GCC AND NOT SFML_GCC_VERSION VERSION_LESS "4") OR (SFML_COMPILER_CLANG AND NOT SFML_CLANG_VERSION VERSION_LESS "3")))
+    if(NOT SFML_OS_WINDOWS AND (SFML_COMPILER_GCC OR SFML_COMPILER_CLANG))
         set_target_properties(${target} PROPERTIES COMPILE_FLAGS -fvisibility=hidden)
     endif()
 

cmake/SFMLConfigDependencies.cmake.in

@@ -1,8 +1,3 @@
-
-if (CMAKE_VERSION VERSION_LESS 3.5.2)
-    include(CMakeParseArguments)
-endif()
-
 # in case of static linking, we must also define the list of all the dependencies of SFML libraries
 if(SFML_STATIC_LIBRARIES)
     # detect the OS

src/SFML/CMakeLists.txt

@@ -14,18 +14,10 @@ if (SFML_OS_WINDOWS)
             set(CMAKE_LIBRARY_PATH ${CMAKE_LIBRARY_PATH} "${PROJECT_SOURCE_DIR}/extlibs/bin/x64")
         endif()
     elseif(SFML_COMPILER_MSVC OR (SFML_COMPILER_CLANG AND NOT MINGW))
-        if(SFML_MSVC_VERSION LESS 14)
-            if(ARCH_32BITS)
-                set(CMAKE_LIBRARY_PATH ${CMAKE_LIBRARY_PATH} "${PROJECT_SOURCE_DIR}/extlibs/libs-msvc/x86")
-            elseif(ARCH_64BITS)
-                set(CMAKE_LIBRARY_PATH ${CMAKE_LIBRARY_PATH} "${PROJECT_SOURCE_DIR}/extlibs/libs-msvc/x64")
-            endif()
-        else()
-            if(ARCH_32BITS)
-                set(CMAKE_LIBRARY_PATH ${CMAKE_LIBRARY_PATH} "${PROJECT_SOURCE_DIR}/extlibs/libs-msvc-universal/x86")
-            elseif(ARCH_64BITS)
-                set(CMAKE_LIBRARY_PATH ${CMAKE_LIBRARY_PATH} "${PROJECT_SOURCE_DIR}/extlibs/libs-msvc-universal/x64")
-            endif()
+        if(ARCH_32BITS)
+            set(CMAKE_LIBRARY_PATH ${CMAKE_LIBRARY_PATH} "${PROJECT_SOURCE_DIR}/extlibs/libs-msvc-universal/x86")
+        elseif(ARCH_64BITS)
+            set(CMAKE_LIBRARY_PATH ${CMAKE_LIBRARY_PATH} "${PROJECT_SOURCE_DIR}/extlibs/libs-msvc-universal/x64")
         endif()
     endif()
 elseif(SFML_OS_MACOSX)

src/SFML/Graphics/CMakeLists.txt

@@ -120,7 +120,7 @@ endif()
 
 # starting from Visual Studio 2015, inline versions of some C functions are used; for compatibility link this library
 # see https://docs.microsoft.com/en-us/cpp/porting/overview-of-potential-upgrade-issues-visual-cpp?view=msvc-160#libraries
-if((SFML_COMPILER_MSVC AND SFML_MSVC_VERSION GREATER_EQUAL 14) OR (SFML_COMPILER_CLANG AND SFML_OS_WINDOWS AND NOT MINGW))
+if(SFML_COMPILER_MSVC OR (SFML_COMPILER_CLANG AND SFML_OS_WINDOWS AND NOT MINGW))
     target_link_libraries(sfml-graphics PRIVATE legacy_stdio_definitions.lib)
 endif()