diff --git a/src/catch2/benchmark/catch_benchmark.hpp b/src/catch2/benchmark/catch_benchmark.hpp
index 28da3286..28664b61 100644
--- a/src/catch2/benchmark/catch_benchmark.hpp
+++ b/src/catch2/benchmark/catch_benchmark.hpp
@@ -12,7 +12,6 @@
 
 #include <catch2/interfaces/catch_interfaces_config.hpp>
 #include <catch2/internal/catch_compiler_capabilities.hpp>
-#include <catch2/internal/catch_compiler_detections.hpp>
 #include <catch2/internal/catch_context.hpp>
 #include <catch2/interfaces/catch_interfaces_reporter.hpp>
 #include <catch2/internal/catch_unique_name.hpp>
diff --git a/src/catch2/benchmark/detail/catch_stats.cpp b/src/catch2/benchmark/detail/catch_stats.cpp
index 8f13f59a..10511d4c 100644
--- a/src/catch2/benchmark/detail/catch_stats.cpp
+++ b/src/catch2/benchmark/detail/catch_stats.cpp
@@ -10,7 +10,6 @@
 #include <catch2/benchmark/detail/catch_stats.hpp>
 
 #include <catch2/internal/catch_compiler_capabilities.hpp>
-#include <catch2/internal/catch_compiler_detections.hpp>
 
 #include <cassert>
 #include <cstddef>
diff --git a/src/catch2/catch_tag_alias_autoregistrar.hpp b/src/catch2/catch_tag_alias_autoregistrar.hpp
index ee73c7a5..c742bcd3 100644
--- a/src/catch2/catch_tag_alias_autoregistrar.hpp
+++ b/src/catch2/catch_tag_alias_autoregistrar.hpp
@@ -9,7 +9,6 @@
 #define CATCH_TAG_ALIAS_AUTOREGISTRAR_HPP_INCLUDED
 
 #include <catch2/internal/catch_compiler_capabilities.hpp>
-#include <catch2/internal/catch_compiler_detections.hpp>
 #include <catch2/internal/catch_unique_name.hpp>
 #include <catch2/internal/catch_source_line_info.hpp>
 
diff --git a/src/catch2/catch_translate_exception.hpp b/src/catch2/catch_translate_exception.hpp
index f4dc0599..dfd95cd6 100644
--- a/src/catch2/catch_translate_exception.hpp
+++ b/src/catch2/catch_translate_exception.hpp
@@ -10,7 +10,6 @@
 
 #include <catch2/interfaces/catch_interfaces_exception.hpp>
 #include <catch2/internal/catch_compiler_capabilities.hpp>
-#include <catch2/internal/catch_compiler_detections.hpp>
 #include <catch2/internal/catch_unique_name.hpp>
 
 #include <exception>
diff --git a/src/catch2/internal/catch_clara.hpp b/src/catch2/internal/catch_clara.hpp
index 6e3138ae..79f21adf 100644
--- a/src/catch2/internal/catch_clara.hpp
+++ b/src/catch2/internal/catch_clara.hpp
@@ -8,6 +8,8 @@
 #ifndef CATCH_CLARA_HPP_INCLUDED
 #define CATCH_CLARA_HPP_INCLUDED
 
+#include <catch2/internal/catch_compiler_detections.hpp>
+
 #if defined( CATCH_COMPILER_CLANG )
 #    pragma clang diagnostic push
 #    pragma clang diagnostic ignored "-Wweak-vtables"
@@ -29,7 +31,6 @@
 #    endif
 #endif
 
-#include <catch2/internal/catch_compiler_detections.hpp>
 #include <catch2/internal/catch_move_and_forward.hpp>
 #include <catch2/internal/catch_noncopyable.hpp>
 #include <catch2/internal/catch_void_type.hpp>
diff --git a/src/catch2/internal/catch_combined_tu.cpp b/src/catch2/internal/catch_combined_tu.cpp
index 71af4cae..bc6043f5 100644
--- a/src/catch2/internal/catch_combined_tu.cpp
+++ b/src/catch2/internal/catch_combined_tu.cpp
@@ -24,7 +24,6 @@
 
 #include <catch2/catch_tag_alias_autoregistrar.hpp>
 #include <catch2/internal/catch_compiler_capabilities.hpp>
-#include <catch2/internal/catch_compiler_detections.hpp>
 #include <catch2/interfaces/catch_interfaces_registry_hub.hpp>
 
 namespace Catch {
@@ -46,7 +45,6 @@ namespace Catch {
 //////////////////////////////////////////
 
 #include <catch2/internal/catch_polyfills.hpp>
-#include <catch2/internal/catch_compiler_detections.hpp>
 #include <cmath>
 
 namespace Catch {
@@ -75,7 +73,6 @@ namespace Catch {
 // vvv formerly catch_uncaught_exceptions.cpp vvv //
 ////////////////////////////////////////////////////
 
-#include <catch2/internal/catch_compiler_detections.hpp>
 #include <catch2/internal/catch_uncaught_exceptions.hpp>
 #include <catch2/internal/catch_config_uncaught_exceptions.hpp>
 
@@ -131,7 +128,6 @@ namespace Catch {
 // vvv formerly catch_startup_exception_registry.cpp vvv //
 ///////////////////////////////////////////////////////////
 #include <catch2/internal/catch_startup_exception_registry.hpp>
-#include <catch2/internal/catch_compiler_detections.hpp>
 
 namespace Catch {
 #if !defined(CATCH_CONFIG_DISABLE_EXCEPTIONS)
diff --git a/src/catch2/internal/catch_commandline.cpp b/src/catch2/internal/catch_commandline.cpp
index 81787aa9..59b06de9 100644
--- a/src/catch2/internal/catch_commandline.cpp
+++ b/src/catch2/internal/catch_commandline.cpp
@@ -8,7 +8,6 @@
 #include <catch2/internal/catch_commandline.hpp>
 
 #include <catch2/internal/catch_compiler_capabilities.hpp>
-#include <catch2/internal/catch_compiler_detections.hpp>
 #include <catch2/catch_config.hpp>
 #include <catch2/internal/catch_string_manip.hpp>
 #include <catch2/interfaces/catch_interfaces_registry_hub.hpp>
diff --git a/src/catch2/internal/catch_compiler_capabilities.hpp b/src/catch2/internal/catch_compiler_capabilities.hpp
index 16888c74..2f9ee339 100644
--- a/src/catch2/internal/catch_compiler_capabilities.hpp
+++ b/src/catch2/internal/catch_compiler_capabilities.hpp
@@ -28,22 +28,6 @@
 #include <catch2/internal/catch_platform.hpp>
 #include <catch2/catch_user_config.hpp>
 
-#if defined(__GNUC__) && !defined(__clang__) && !defined(__ICC) && !defined(__CUDACC__) && !defined(__LCC__)
-#define CATCH_COMPILER_GCC
-#endif
-
-#if defined(__clang__)
-#define CATCH_COMPILER_CLANG
-#endif
-
-#if defined(_MSC_VER) && !defined(__clang__)
-#define CATCH_COMPILER_MSC
-#endif
-
-#if defined(__MINGW32__)
-#define CATCH_COMPILER_MINGW32
-#endif
-
 #ifdef __cplusplus
 
 #  if (__cplusplus >= 201402L) || (defined(_MSVC_LANG) && _MSVC_LANG >= 201402L)
diff --git a/src/catch2/internal/catch_console_colour.cpp b/src/catch2/internal/catch_console_colour.cpp
index e2a175f1..25af9585 100644
--- a/src/catch2/internal/catch_console_colour.cpp
+++ b/src/catch2/internal/catch_console_colour.cpp
@@ -4,6 +4,9 @@
 //   (See accompanying file LICENSE_1_0.txt or copy at
 //        https://www.boost.org/LICENSE_1_0.txt)
 
+#include <catch2/internal/catch_console_colour.hpp>
+#include <catch2/internal/catch_compiler_detections.hpp>
+
 // SPDX-License-Identifier: BSL-1.0
 #if defined(CATCH_COMPILER_CLANG)
 #    pragma clang diagnostic push
@@ -11,7 +14,6 @@
 #endif
 
 
-#include <catch2/internal/catch_console_colour.hpp>
 #include <catch2/internal/catch_enforce.hpp>
 #include <catch2/internal/catch_errno_guard.hpp>
 #include <catch2/interfaces/catch_interfaces_config.hpp>
@@ -22,7 +24,6 @@
 #include <catch2/internal/catch_debugger.hpp>
 #include <catch2/internal/catch_windows_h_proxy.hpp>
 #include <catch2/internal/catch_compiler_capabilities.hpp>
-#include <catch2/internal/catch_compiler_detections.hpp>
 
 #include <cassert>
 #include <ostream>
diff --git a/src/catch2/internal/catch_enforce.hpp b/src/catch2/internal/catch_enforce.hpp
index a12de27c..3f81ef1a 100644
--- a/src/catch2/internal/catch_enforce.hpp
+++ b/src/catch2/internal/catch_enforce.hpp
@@ -10,7 +10,6 @@
 
 #include <catch2/internal/catch_source_line_info.hpp>
 #include <catch2/internal/catch_compiler_capabilities.hpp>
-#include <catch2/internal/catch_compiler_detections.hpp>
 #include <catch2/internal/catch_stream.hpp>
 
 #include <exception>
diff --git a/src/catch2/internal/catch_exception_translator_registry.cpp b/src/catch2/internal/catch_exception_translator_registry.cpp
index 603d00c2..acddea6e 100644
--- a/src/catch2/internal/catch_exception_translator_registry.cpp
+++ b/src/catch2/internal/catch_exception_translator_registry.cpp
@@ -7,7 +7,6 @@
 // SPDX-License-Identifier: BSL-1.0
 #include <catch2/internal/catch_exception_translator_registry.hpp>
 #include <catch2/internal/catch_compiler_capabilities.hpp>
-#include <catch2/internal/catch_compiler_detections.hpp>
 #include <catch2/internal/catch_enforce.hpp>
 #include <catch2/internal/catch_test_failure_exception.hpp>
 #include <catch2/internal/catch_move_and_forward.hpp>
diff --git a/src/catch2/internal/catch_fatal_condition_handler.hpp b/src/catch2/internal/catch_fatal_condition_handler.hpp
index 1d5d2196..389dab5d 100644
--- a/src/catch2/internal/catch_fatal_condition_handler.hpp
+++ b/src/catch2/internal/catch_fatal_condition_handler.hpp
@@ -10,7 +10,6 @@
 
 #include <catch2/internal/catch_platform.hpp>
 #include <catch2/internal/catch_compiler_capabilities.hpp>
-#include <catch2/internal/catch_compiler_detections.hpp>
 
 #include <cassert>
 
diff --git a/src/catch2/internal/catch_main.cpp b/src/catch2/internal/catch_main.cpp
index 373d838f..f523bbfa 100644
--- a/src/catch2/internal/catch_main.cpp
+++ b/src/catch2/internal/catch_main.cpp
@@ -7,7 +7,6 @@
 // SPDX-License-Identifier: BSL-1.0
 #include <catch2/catch_session.hpp>
 #include <catch2/internal/catch_compiler_capabilities.hpp>
-#include <catch2/internal/catch_compiler_detections.hpp>
 #include <catch2/internal/catch_config_wchar.hpp>
 #include <catch2/internal/catch_leak_detector.hpp>
 #include <catch2/internal/catch_platform.hpp>
diff --git a/src/catch2/internal/catch_run_context.cpp b/src/catch2/internal/catch_run_context.cpp
index 40836a61..6a32cdc1 100644
--- a/src/catch2/internal/catch_run_context.cpp
+++ b/src/catch2/internal/catch_run_context.cpp
@@ -11,7 +11,6 @@
 #include <catch2/interfaces/catch_interfaces_generatortracker.hpp>
 #include <catch2/interfaces/catch_interfaces_config.hpp>
 #include <catch2/internal/catch_compiler_capabilities.hpp>
-#include <catch2/internal/catch_compiler_detections.hpp>
 #include <catch2/internal/catch_context.hpp>
 #include <catch2/internal/catch_enforce.hpp>
 #include <catch2/internal/catch_fatal_condition_handler.hpp>
diff --git a/src/catch2/internal/catch_section.hpp b/src/catch2/internal/catch_section.hpp
index f6b3ed80..2e72923c 100644
--- a/src/catch2/internal/catch_section.hpp
+++ b/src/catch2/internal/catch_section.hpp
@@ -9,7 +9,6 @@
 #define CATCH_SECTION_HPP_INCLUDED
 
 #include <catch2/internal/catch_compiler_capabilities.hpp>
-#include <catch2/internal/catch_compiler_detections.hpp>
 #include <catch2/internal/catch_noncopyable.hpp>
 #include <catch2/catch_section_info.hpp>
 #include <catch2/catch_timer.hpp>
diff --git a/src/catch2/internal/catch_source_line_info.cpp b/src/catch2/internal/catch_source_line_info.cpp
index 1f8c5966..53c4e5c1 100644
--- a/src/catch2/internal/catch_source_line_info.cpp
+++ b/src/catch2/internal/catch_source_line_info.cpp
@@ -10,6 +10,8 @@
 #include <cstring>
 #include <ostream>
 
+#include <catch2/internal/catch_compiler_detections.hpp>
+
 namespace Catch {
 
     bool SourceLineInfo::operator == ( SourceLineInfo const& other ) const noexcept {
diff --git a/src/catch2/internal/catch_test_registry.cpp b/src/catch2/internal/catch_test_registry.cpp
index 5fa87b53..faadb101 100644
--- a/src/catch2/internal/catch_test_registry.cpp
+++ b/src/catch2/internal/catch_test_registry.cpp
@@ -7,7 +7,6 @@
 // SPDX-License-Identifier: BSL-1.0
 #include <catch2/internal/catch_test_registry.hpp>
 #include <catch2/internal/catch_compiler_capabilities.hpp>
-#include <catch2/internal/catch_compiler_detections.hpp>
 #include <catch2/catch_test_case_info.hpp>
 #include <catch2/internal/catch_test_case_registry_impl.hpp>
 #include <catch2/interfaces/catch_interfaces_registry_hub.hpp>
diff --git a/src/catch2/internal/catch_to_string.hpp b/src/catch2/internal/catch_to_string.hpp
index 069ca72c..d8ff35cf 100644
--- a/src/catch2/internal/catch_to_string.hpp
+++ b/src/catch2/internal/catch_to_string.hpp
@@ -11,7 +11,6 @@
 #include <string>
 
 #include <catch2/internal/catch_compiler_capabilities.hpp>
-#include <catch2/internal/catch_compiler_detections.hpp>
 #include <catch2/internal/catch_stream.hpp>
 
 namespace Catch {
diff --git a/src/catch2/reporters/catch_reporter_registrars.hpp b/src/catch2/reporters/catch_reporter_registrars.hpp
index 49f49f45..31ecb080 100644
--- a/src/catch2/reporters/catch_reporter_registrars.hpp
+++ b/src/catch2/reporters/catch_reporter_registrars.hpp
@@ -12,7 +12,6 @@
 #include <catch2/interfaces/catch_interfaces_reporter.hpp>
 #include <catch2/interfaces/catch_interfaces_reporter_factory.hpp>
 #include <catch2/internal/catch_compiler_capabilities.hpp>
-#include <catch2/internal/catch_compiler_detections.hpp>
 #include <catch2/internal/catch_unique_ptr.hpp>
 #include <catch2/internal/catch_move_and_forward.hpp>
 
diff --git a/tests/SelfTest/IntrospectiveTests/CmdLine.tests.cpp b/tests/SelfTest/IntrospectiveTests/CmdLine.tests.cpp
index c910664c..e7b0c9c1 100644
--- a/tests/SelfTest/IntrospectiveTests/CmdLine.tests.cpp
+++ b/tests/SelfTest/IntrospectiveTests/CmdLine.tests.cpp
@@ -16,7 +16,6 @@
 #include <catch2/internal/catch_commandline.hpp>
 #include <catch2/generators/catch_generators.hpp>
 #include <catch2/internal/catch_compiler_capabilities.hpp>
-#include <catch2/internal/catch_compiler_detections.hpp>
 
 
 namespace {