diff --git a/libcudacxx/include/cuda/std/__cccl/compiler.h b/libcudacxx/include/cuda/std/__cccl/compiler.h
index d94775b2ad..031e733848 100644
--- a/libcudacxx/include/cuda/std/__cccl/compiler.h
+++ b/libcudacxx/include/cuda/std/__cccl/compiler.h
@@ -13,61 +13,61 @@
 
 // Determine the host compiler and its version
 #if defined(__INTEL_COMPILER)
-#  define _CCCL_COMPILER_ICC
+#  define _CCCL_COMPILER_ICC 1
 #elif defined(__NVCOMPILER)
-#  define _CCCL_COMPILER_NVHPC
+#  define _CCCL_COMPILER_NVHPC 1
 #  define _CCCL_COMPILER_NVHPC_VERSION \
     (__NVCOMPILER_MAJOR__ * 10000 + __NVCOMPILER_MINOR__ * 100 + __NVCOMPILER_PATCHLEVEL__)
 #elif defined(__clang__)
-#  define _CCCL_COMPILER_CLANG
-#  define _CCCL_CLANG_VERSION (__clang_major__ * 10000 + __clang_minor__ * 100 + __clang_patchlevel__)
+#  define _CCCL_COMPILER_CLANG 1
+#  define _CCCL_CLANG_VERSION  (__clang_major__ * 10000 + __clang_minor__ * 100 + __clang_patchlevel__)
 #elif defined(__GNUC__)
-#  define _CCCL_COMPILER_GCC
-#  define _CCCL_GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
+#  define _CCCL_COMPILER_GCC 1
+#  define _CCCL_GCC_VERSION  (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
 #elif defined(_MSC_VER)
-#  define _CCCL_COMPILER_MSVC
+#  define _CCCL_COMPILER_MSVC     1
 #  define _CCCL_MSVC_VERSION      _MSC_VER
 #  define _CCCL_MSVC_VERSION_FULL _MSC_FULL_VER
 #elif defined(__CUDACC_RTC__)
-#  define _CCCL_COMPILER_NVRTC
+#  define _CCCL_COMPILER_NVRTC 1
 #endif
 
 // Convenient shortcut to determine which version of MSVC we are dealing with
 #if defined(_CCCL_COMPILER_MSVC)
 #  if _MSC_VER < 1920
-#    define _CCCL_COMPILER_MSVC_2017
+#    define _CCCL_COMPILER_MSVC_2017 1
 #  elif _MSC_VER < 1930
-#    define _CCCL_COMPILER_MSVC_2019
+#    define _CCCL_COMPILER_MSVC_2019 1
 #  else // _MSC_VER < 1940
-#    define _CCCL_COMPILER_MSVC_2022
+#    define _CCCL_COMPILER_MSVC_2022 1
 #  endif // _MSC_VER < 1940
 #endif // _CCCL_COMPILER_MSVC
 
 // Determine the cuda compiler
 #if defined(__NVCC__)
-#  define _CCCL_CUDA_COMPILER_NVCC
+#  define _CCCL_CUDA_COMPILER_NVCC 1
 #elif defined(_NVHPC_CUDA)
-#  define _CCCL_CUDA_COMPILER_NVHPC
+#  define _CCCL_CUDA_COMPILER_NVHPC 1
 #elif defined(__CUDA__) && defined(_CCCL_COMPILER_CLANG)
-#  define _CCCL_CUDA_COMPILER_CLANG
+#  define _CCCL_CUDA_COMPILER_CLANG 1
 #endif
 
 // Shorthand to check whether there is a cuda compiler available
 #if defined(_CCCL_CUDA_COMPILER_NVCC) || defined(_CCCL_CUDA_COMPILER_NVHPC) || defined(_CCCL_CUDA_COMPILER_CLANG) \
   || defined(_CCCL_COMPILER_NVRTC)
-#  define _CCCL_CUDA_COMPILER
+#  define _CCCL_CUDA_COMPILER 1
 #endif // cuda compiler available
 
 // clang-cuda does not define __CUDACC_VER_MAJOR__ and friends. They are instead retrieved from the CUDA_VERSION macro
 // defined in "cuda.h". clang-cuda automatically pre-includes "__clang_cuda_runtime_wrapper.h" which includes "cuda.h"
 #if defined(_CCCL_CUDA_COMPILER_CLANG)
-#  define _CCCL_CUDACC
+#  define _CCCL_CUDACC           1
 #  define _CCCL_CUDACC_VER_MAJOR CUDA_VERSION / 1000
 #  define _CCCL_CUDACC_VER_MINOR (CUDA_VERSION % 1000) / 10
 #  define _CCCL_CUDACC_VER_BUILD 0
 #  define _CCCL_CUDACC_VER       CUDA_VERSION * 100
 #elif defined(_CCCL_CUDA_COMPILER)
-#  define _CCCL_CUDACC
+#  define _CCCL_CUDACC           1
 #  define _CCCL_CUDACC_VER_MAJOR __CUDACC_VER_MAJOR__
 #  define _CCCL_CUDACC_VER_MINOR __CUDACC_VER_MINOR__
 #  define _CCCL_CUDACC_VER_BUILD __CUDACC_VER_BUILD__
@@ -76,28 +76,28 @@
 
 // Some convenience macros to filter CUDACC versions
 #if !defined(_CCCL_CUDA_COMPILER) || (defined(_CCCL_CUDACC) && _CCCL_CUDACC_VER < 1102000)
-#  define _CCCL_CUDACC_BELOW_11_2
+#  define _CCCL_CUDACC_BELOW_11_2 1
 #endif // defined(_CCCL_CUDACC) && _CCCL_CUDACC_VER < 1102000
 #if !defined(_CCCL_CUDA_COMPILER) || (defined(_CCCL_CUDACC) && _CCCL_CUDACC_VER < 1103000)
-#  define _CCCL_CUDACC_BELOW_11_3
+#  define _CCCL_CUDACC_BELOW_11_3 1
 #endif // defined(_CCCL_CUDACC) && _CCCL_CUDACC_VER < 1103000
 #if !defined(_CCCL_CUDA_COMPILER) || (defined(_CCCL_CUDACC) && _CCCL_CUDACC_VER < 1104000)
-#  define _CCCL_CUDACC_BELOW_11_4
+#  define _CCCL_CUDACC_BELOW_11_4 1
 #endif // defined(_CCCL_CUDACC) && _CCCL_CUDACC_VER < 11074000
 #if !defined(_CCCL_CUDA_COMPILER) || (defined(_CCCL_CUDACC) && _CCCL_CUDACC_VER < 1107000)
-#  define _CCCL_CUDACC_BELOW_11_7
+#  define _CCCL_CUDACC_BELOW_11_7 1
 #endif // defined(_CCCL_CUDACC) && _CCCL_CUDACC_VER < 1104000
 #if !defined(_CCCL_CUDA_COMPILER) || (defined(_CCCL_CUDACC) && _CCCL_CUDACC_VER < 1108000)
-#  define _CCCL_CUDACC_BELOW_11_8
+#  define _CCCL_CUDACC_BELOW_11_8 1
 #endif // defined(_CCCL_CUDACC) && _CCCL_CUDACC_VER < 1108000
 #if !defined(_CCCL_CUDA_COMPILER) || (defined(_CCCL_CUDACC) && _CCCL_CUDACC_VER < 1200000)
-#  define _CCCL_CUDACC_BELOW_12_0
+#  define _CCCL_CUDACC_BELOW_12_0 1
 #endif // defined(_CCCL_CUDACC) && _CCCL_CUDACC_VER < 1203000
 #if !defined(_CCCL_CUDA_COMPILER) || (defined(_CCCL_CUDACC) && _CCCL_CUDACC_VER < 1202000)
-#  define _CCCL_CUDACC_BELOW_12_2
+#  define _CCCL_CUDACC_BELOW_12_2 1
 #endif // defined(_CCCL_CUDACC) && _CCCL_CUDACC_VER < 1203000
 #if !defined(_CCCL_CUDA_COMPILER) || (defined(_CCCL_CUDACC) && _CCCL_CUDACC_VER < 1203000)
-#  define _CCCL_CUDACC_BELOW_12_3
+#  define _CCCL_CUDACC_BELOW_12_3 1
 #endif // defined(_CCCL_CUDACC) && _CCCL_CUDACC_VER < 1203000
 
 #endif // __CCCL_COMPILER_H