configure.ac: include both -I. and -I$srcdir for "circular dependency" test, so that ${build_pwd}/wolfssl/options.h is found in out-of-tree builds; streamline scripting that dynamically sets $TRIM;

linuxkm/module_exports.c.template: include wolfssl/wolfcrypt/wolfmath.h, to bring in wc_GetMathInfo() prototype;

src/ssl.c: move "Global pointer to constant BN on" to src/ssl_bn.c; and in wolfSSL_Cleanup(), call the new wolfSSL_BN_free_one() rather than using ad hoc cleanup logic;

src/ssl_bn.c: add bn_one and wolfSSL_BN_free_one();

src/ssl_asn1.c: fix bugprone-macro-parentheses in bufLenOrNull(); refactor wolfSSL_ASN1_TIME_diff() to avoid floating point math; use intermediate tm_year variable in wolfssl_asn1_time_to_tm() to avoid target-specific type conflicts on tm->tm_year; use "FALL_THROUGH", not "/* fall-through */", in wolfSSL_ASN1_TYPE_set (clang-diagnostic-implicit-fallthrough);

wolfcrypt/src/ecc.c: fix identicalInnerCondition in ecc_mul2add();

wolfcrypt/src/integer.c: refactor OPT_CAST()s in mp_grow() to unconditional casts as elsewhere, to mollify a confused cppcheck-all-intmath;

tests/api.c: reformat some overlong lines.

wolfcrypt/src/integer.c

@@ -423,7 +423,7 @@ int mp_grow (mp_int * a, int size)
      * in case the operation failed we don't want
      * to overwrite the dp member of a.
      */
-    tmp = OPT_CAST(mp_digit) XREALLOC (a->dp, sizeof (mp_digit) * size, NULL,
+    tmp = (mp_digit *)XREALLOC (a->dp, sizeof (mp_digit) * size, NULL,
                                                            DYNAMIC_TYPE_BIGINT);
     if (tmp == NULL) {
       /* reallocation failed but "a" is still valid [can be freed] */
@@ -3280,7 +3280,7 @@ int mp_init_size (mp_int * a, int size)
   size += (MP_PREC * 2) - (size % MP_PREC);
 
   /* alloc mem */
-  a->dp = OPT_CAST(mp_digit) XMALLOC (sizeof (mp_digit) * size, NULL,
+  a->dp = (mp_digit *)XMALLOC (sizeof (mp_digit) * size, NULL,
                                       DYNAMIC_TYPE_BIGINT);
   if (a->dp == NULL) {
     return MP_MEM;