add --enable-memory, build, disable runtime memory cbs, check leanpsk

configure.ac

@@ -539,6 +539,28 @@ then
 fi
 
 
+# MEMORY 
+AC_ARG_ENABLE([memory],
+    [  --enable-memory         Enable memory callbacks (default: enabled)],
+    [ ENABLED_MEMORY=$enableval ],
+    [ ENABLED_MEMORY=yes ]
+    )
+
+if test "$ENABLED_MEMORY" = "no"
+then
+    AM_CFLAGS="$AM_CFLAGS -DNO_CYASSL_MEMORY"
+else
+    # turn off memory cb if leanpsk on
+    if test "$ENABLED_LEANPSK" = "yes"
+    then
+        # but don't turn on NO_CYASSL_MEMORY because using own
+        ENABLED_MEMORY=no
+    fi
+fi
+
+AM_CONDITIONAL([BUILD_MEMORY], [test "x$ENABLED_MEMORY" = "xyes"])
+
+
 # RSA 
 AC_ARG_ENABLE([rsa],
     [  --enable-rsa            Enable RSA (default: enabled)],
@@ -1169,6 +1191,7 @@ echo "   * DH:                        $ENABLED_DH"
 echo "   * ECC:                       $ENABLED_ECC"
 echo "   * ASN:                       $ENABLED_ASN"
 echo "   * CODING:                    $ENABLED_CODING"
+echo "   * MEMORY:                    $ENABLED_MEMORY"
 echo "   * OCSP:                      $ENABLED_OCSP"
 echo "   * CRL:                       $ENABLED_CRL"
 echo "   * CRL-MONITOR:               $ENABLED_CRL_MONITOR"

cyassl/ctaocrypt/settings.h

@@ -457,7 +457,7 @@
 
 
 #if !defined(XMALLOC_USER) && !defined(MICRIUM_MALLOC) && \
-                              !defined(CYASSL_LEANPSK)
+    !defined(CYASSL_LEANPSK) && !defined(NO_CYASSL_MEMORY)
     #define USE_CYASSL_MEMORY
 #endif
 

cyassl/ctaocrypt/types.h

@@ -149,16 +149,22 @@ enum {
 /* default to libc stuff */
 /* XREALLOC is used once in normal math lib, not in fast math lib */
 /* XFREE on some embeded systems doesn't like free(0) so test  */
-#ifdef XMALLOC_USER
+#if defined(XMALLOC_USER)
     /* prototypes for user heap override functions */
     #include <stddef.h>  /* for size_t */
     extern void *XMALLOC(size_t n, void* heap, int type);
     extern void *XREALLOC(void *p, size_t n, void* heap, int type);
     extern void XFREE(void *p, void* heap, int type);
+#elif defined(NO_CYASSL_MEMORY)
+    /* just use plain C stdlib stuff if desired */
+    #include <stdlib.h>
+    #define XMALLOC(s, h, t)     ((void)h, (void)t, malloc((s)))
+    #define XFREE(p, h, t)       {void* xp = (p); if((xp)) free((xp));}
+    #define XREALLOC(p, n, h, t) realloc((p), (n))
 #elif !defined(MICRIUM_MALLOC) && !defined(EBSNET) \
         && !defined(CYASSL_SAFERTOS) && !defined(FREESCALE_MQX) \
         && !defined(CYASSL_LEANPSK)
-    /* default C runtime, can install different routines at runtime */
+    /* default C runtime, can install different routines at runtime via cbs */
     #include <cyassl/ctaocrypt/memory.h>
     #define XMALLOC(s, h, t)     ((void)h, (void)t, CyaSSL_Malloc((s)))
     #define XFREE(p, h, t)       {void* xp = (p); if((xp)) CyaSSL_Free((xp));}

src/include.am

@@ -19,7 +19,7 @@ src_libcyassl_la_LIBADD = $(LIBM)
 src_libcyassl_la_CFLAGS = -DBUILDING_CYASSL $(AM_CFLAGS)
 src_libcyassl_la_CPPFLAGS = -DBUILDING_CYASSL $(AM_CPPFLAGS)
 
-if !BUILD_LEANPSK
+if BUILD_MEMORY
 src_libcyassl_la_SOURCES += ctaocrypt/src/memory.c
 endif