add fips enable switch

.gitignore

@@ -30,6 +30,7 @@ tags
 .tags*
 cyassl-config
 cyassl.sublime*
+fips.c
 ctaocrypt/benchmark/benchmark
 ctaocrypt/test/testctaocrypt
 examples/client/client

configure.ac

@@ -1058,6 +1058,21 @@ fi
 AM_CONDITIONAL([BUILD_RABBIT], [test "x$ENABLED_RABBIT" = "xyes"])
 
 
+# FIPS 
+AC_ARG_ENABLE([fips],
+    [  --enable-fips           Enable FIPS 140-2(default: disabled)],
+    [ ENABLED_FIPS=$enableval ],
+    [ ENABLED_FIPS=no ]
+    )
+
+if test "x$ENABLED_FIPS" = "xyes"
+then
+    AM_CFLAGS="$AM_CFLAGS -DHAVE_FIPS"
+fi
+
+AM_CONDITIONAL([BUILD_FIPS], [test "x$ENABLED_FIPS" = "xyes"])
+
+
 # Filesystem Build 
 AC_ARG_ENABLE([filesystem],
     [  --enable-filesystem     Enable Filesystem support (default: enabled)],

ctaocrypt/src/fips.c

@@ -0,0 +1 @@
+/* dummy fips.c for distribution */

src/include.am

@@ -36,6 +36,10 @@ if BUILD_ASN
 src_libcyassl_la_SOURCES += ctaocrypt/src/asn.c
 endif
 
+if BUILD_FIPS
+src_libcyassl_la_SOURCES += ctaocrypt/src/fips.c
+endif
+
 if BUILD_CODING
 src_libcyassl_la_SOURCES += ctaocrypt/src/coding.c
 endif