Make runtime CPU detection and near-optimal parsing enabled in the code by default

Makefile

@@ -90,16 +90,16 @@ override CFLAGS += -I.
 # Hide non-standard functions from standard headers (e.g. heapsort() on *BSD).
 override CFLAGS += -D_ANSI_SOURCE
 
-ifeq ($(SUPPORT_NEAR_OPTIMAL_PARSING),yes)
+ifneq ($(SUPPORT_NEAR_OPTIMAL_PARSING),yes)
-  override CFLAGS += -DSUPPORT_NEAR_OPTIMAL_PARSING=1
+  override CFLAGS += -DSUPPORT_NEAR_OPTIMAL_PARSING=0
 endif
 
 ifeq ($(UNSAFE_DECOMPRESSION),yes)
   override CFLAGS += -DUNSAFE_DECOMPRESSION=1
 endif
 
-ifeq ($(RUNTIME_CPU_DETECTION),yes)
+ifneq ($(RUNTIME_CPU_DETECTION),yes)
-  override CFLAGS += -DRUNTIME_CPU_DETECTION=1
+  override CFLAGS += -DRUNTIME_CPU_DETECTION=0
 endif
 
 SRC := src/aligned_malloc.c

src/deflate_compress.c

@@ -27,7 +27,7 @@
  * zlib at level 9.  However, it is slow.
  */
 #ifndef SUPPORT_NEAR_OPTIMAL_PARSING
-#  define SUPPORT_NEAR_OPTIMAL_PARSING 0
+#  define SUPPORT_NEAR_OPTIMAL_PARSING 1
 #endif
 
 /*

src/x86_cpu_features.h

@@ -6,6 +6,10 @@
 
 #include "util.h"
 
+#ifndef RUNTIME_CPU_DETECTION
+#  define RUNTIME_CPU_DETECTION 1
+#endif
+
 #if RUNTIME_CPU_DETECTION && defined(__GNUC__) && defined(__x86_64__)
 #  define X86_CPU_FEATURES_ENABLED 1
 #endif