diff --git a/libc/src/string/memory_utils/bcmp_implementations.h b/libc/src/string/memory_utils/bcmp_implementations.h
--- a/libc/src/string/memory_utils/bcmp_implementations.h
+++ b/libc/src/string/memory_utils/bcmp_implementations.h
@@ -26,6 +26,8 @@
 #elif defined(LIBC_TARGET_ARCH_IS_ANY_RISCV)
 #include "src/string/memory_utils/riscv/bcmp_implementations.h"
 #define LIBC_SRC_STRING_MEMORY_UTILS_BCMP inline_bcmp_riscv
+#elif defined(LIBC_TARGET_ARCH_IS_GPU)
+// TODO: Define a more optimal GPU impolementation.
 #else
 #error "Unsupported architecture"
 #endif
diff --git a/libc/src/string/memory_utils/memcmp_implementations.h b/libc/src/string/memory_utils/memcmp_implementations.h
--- a/libc/src/string/memory_utils/memcmp_implementations.h
+++ b/libc/src/string/memory_utils/memcmp_implementations.h
@@ -27,6 +27,8 @@
 #elif defined(LIBC_TARGET_ARCH_IS_ANY_RISCV)
 #include "src/string/memory_utils/riscv/memcmp_implementations.h"
 #define LIBC_SRC_STRING_MEMORY_UTILS_MEMCMP inline_memcmp_riscv
+#elif defined(LIBC_TARGET_ARCH_IS_GPU)
+// TODO: Define a more optimal GPU impolementation.
 #else
 #error "Unsupported architecture"
 #endif
diff --git a/libc/src/string/memory_utils/memcpy_implementations.h b/libc/src/string/memory_utils/memcpy_implementations.h
--- a/libc/src/string/memory_utils/memcpy_implementations.h
+++ b/libc/src/string/memory_utils/memcpy_implementations.h
@@ -31,6 +31,8 @@
 #elif defined(LIBC_TARGET_ARCH_IS_ANY_RISCV)
 #include "src/string/memory_utils/riscv/memcpy_implementations.h"
 #define LIBC_SRC_STRING_MEMORY_UTILS_MEMCPY inline_memcpy_riscv
+#elif defined(LIBC_TARGET_ARCH_IS_GPU)
+// TODO: Define a more optimal GPU impolementation.
 #else
 #error "Unsupported architecture"
 #endif
diff --git a/libc/src/string/memory_utils/memmove_implementations.h b/libc/src/string/memory_utils/memmove_implementations.h
--- a/libc/src/string/memory_utils/memmove_implementations.h
+++ b/libc/src/string/memory_utils/memmove_implementations.h
@@ -23,6 +23,8 @@
 #elif defined(LIBC_TARGET_ARCH_IS_ANY_RISCV)
 #include "src/string/memory_utils/riscv/memmove_implementations.h"
 #define LIBC_SRC_STRING_MEMORY_UTILS_MEMMOVE inline_memmove_riscv
+#elif defined(LIBC_TARGET_ARCH_IS_GPU)
+// TODO: Define a more optimal GPU impolementation.
 #else
 #error "Unsupported architecture"
 #endif
diff --git a/libc/src/string/memory_utils/memset_implementations.h b/libc/src/string/memory_utils/memset_implementations.h
--- a/libc/src/string/memory_utils/memset_implementations.h
+++ b/libc/src/string/memory_utils/memset_implementations.h
@@ -27,6 +27,8 @@
 #elif defined(LIBC_TARGET_ARCH_IS_ANY_RISCV)
 #include "src/string/memory_utils/riscv/memset_implementations.h"
 #define LIBC_SRC_STRING_MEMORY_UTILS_MEMSET inline_memset_riscv
+#elif defined(LIBC_TARGET_ARCH_IS_GPU)
+// TODO: Define a more optimal GPU impolementation.
 #else
 #error "Unsupported architecture"
 #endif