Get LIBC_MEM and LIBC_STDIO building with aarch64

third_party/zlib/adler32simd.c

@@ -58,6 +58,8 @@ asm(".include \"libc/disclaimer.inc\"");
 /* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */
 #define NMAX 5552
 
+#ifdef ADLER32_SIMD_SSSE3
+
 uint32_t adler32_simd_(uint32_t adler, const unsigned char *buf, size_t len) {
   /*
    * Split Adler-32 into component sums.
@@ -192,3 +194,5 @@ uint32_t adler32_simd_(uint32_t adler, const unsigned char *buf, size_t len) {
    */
   return s1 | (s2 << 16);
 }
+
+#endif /* ADLER32_SIMD_SSSE3 */

third_party/zlib/zlib.mk

@@ -41,17 +41,17 @@ $(THIRD_PARTY_ZLIB_A).pkg:				\
 		$(THIRD_PARTY_ZLIB_A_OBJS)		\
 		$(foreach x,$(THIRD_PARTY_ZLIB_A_DIRECTDEPS),$($(x)_A).pkg)
 
+ifeq ($(ARCH), x86_64)
 o/$(MODE)/third_party/zlib/adler32simd.o: private	\
 		OVERRIDE_CFLAGS +=			\
 			-mssse3
-
 o/$(MODE)/third_party/zlib/adler32.o: private		\
 		OVERRIDE_CPPFLAGS +=			\
 			-DADLER32_SIMD_SSSE3
-
 o/$(MODE)/third_party/zlib/deflate.o: private		\
 		OVERRIDE_CPPFLAGS +=			\
 			-DCRC32_SIMD_SSE42_PCLMUL
+endif
 
 $(THIRD_PARTY_ZLIB_A_OBJS): private			\
 		OVERRIDE_CFLAGS +=			\