[cutlass-library] Alias cutlass_lib to the static target when shared is off (fixes #3179)

[LeSingh1]

Summary

When CUTLASS is built with a static-only configuration (-DCUTLASS_BUILD_SHARED_LIBS=OFF -DCUTLASS_BUILD_STATIC_LIBS=ON), tools/profiler fails to compile:

fatal error: cutlass/library/library.h: No such file or directory

Root cause

In tools/library/CMakeLists.txt the legacy cutlass_lib ALIAS is only created when CUTLASS_BUILD_SHARED_LIBS=ON:

if(CUTLASS_BUILD_SHARED_LIBS)
  add_library(cutlass_lib ALIAS cutlass_library)
endif()

But tools/profiler/CMakeLists.txt unconditionally consumes it (line 89):

target_link_libraries(cutlass_profiler PRIVATE cutlass_lib ...)

When shared is disabled, cutlass_lib doesn't exist; CMake silently treats it as a plain -lcutlass_lib linker flag, so the transitive include directories from cutlass_library_includes (which expose tools/library/include/) are never propagated, hence the missing-header error.

Fix

Fall back to aliasing cutlass_lib to the static target when shared is disabled:

if(CUTLASS_BUILD_SHARED_LIBS)
  add_library(cutlass_lib ALIAS cutlass_library)
elseif(CUTLASS_BUILD_STATIC_LIBS)
  add_library(cutlass_lib ALIAS cutlass_library_static)
endif()

Behavior when SHARED_LIBS=ON (the default and most common configuration) is unchanged.

Verification

I don't have a CUDA build environment on this machine, so I have not run a full static-only build locally. The diff matches the diagnosis in the issue body verbatim, and the change is local to a single backwards-compatibility alias.

Issue

Fixes #3179