added comment and updated NOTES.txt

CMakeLists.txt

@@ -121,6 +121,7 @@ output" OFF
 # clang-cl shared build crashes with extern constants so force to inline constants 😕🤔
 # only one option with the clang-cl is inline constants for both shared/static builds
 # Look at NOTES.txt[inline constants] how this funckin machinery works 😎
+# Related issue: https://github.com/llvm/llvm-project/issues/55938
 if(NOT (MINGW AND CMAKE_CXX_COMPILER_ID STREQUAL "Clang" AND BUILD_SHARED_LIBS))
     feature_option_dependent(INLINE_CONSTANTS
         "Use inline constants instead of extern constants in the shared build. \

NOTES.txt

@@ -1157,9 +1157,11 @@ inline constants:
    - default is to provide/show this INLINE_CONSTANTS cmake option with the default value OFF, so extern constants are enabled by default
    - MinGW clang shared build crashes with inline constants
      - so don't show INLINE_CONSTANTS cmake option and value is NOT DEFINED in this case so the default will be used and it's extern constants
+     - related issue: https://github.com/llvm/llvm-project/issues/55938
    - MinGW clang static build is not supported, problem with inline constants :/
      - this is different than qmake build, it compiles (qmake has problem with duplicit symbols) but it crashes
      - so throw cmake message(FATAL_ERROR) with a nice message in TinyHelpers tiny_check_unsupported_build()
+     - related issue: https://github.com/llvm/llvm-project/issues/55938
    - clang-cl shared build crashes with extern constants, so force to inline constants 😕🤔
      - don't show INLINE_CONSTANTS cmake option and provide the default value ON using feature_option_dependent(INLINE_CONSTANTS) depends option, so inline constants is the default
      - so inline constants are only one option with clang-cl

cmake/CommonModules/TinyHelpers.cmake

@@ -267,6 +267,8 @@ endmacro()
 # Throw a fatal error for unsupported environments
 function(tiny_check_unsupported_build)
 
+    # Related issue: https://github.com/llvm/llvm-project/issues/55938
+
     if(MINGW AND CMAKE_CXX_COMPILER_ID STREQUAL "Clang" AND NOT BUILD_SHARED_LIBS)
         message(FATAL_ERROR "MinGW clang static build is not supported, it has problems \
 with inline constants :/.")

qmake/features/inline_constants.prf

@@ -1,3 +1,4 @@
+# Related issue: https://github.com/llvm/llvm-project/issues/55938
 !build_pass:win32-clang-g++: \
 if(CONFIG(dll, dll|shared|static|staticlib) | \
 CONFIG(shared, dll|shared|static|staticlib)): \