[Univalue] add univalue over subtree

similar to secp256k1 include and compile univalue over a subtree

src/Makefile.am

@@ -1,4 +1,4 @@
-DIST_SUBDIRS = secp256k1
+DIST_SUBDIRS = secp256k1 univalue
 AM_LDFLAGS = $(PTHREAD_CFLAGS) $(LIBTOOL_LDFLAGS)
 
 
@@ -21,6 +21,7 @@ BITCOIN_CONFIG_INCLUDES=-I$(builddir)/config
 BITCOIN_INCLUDES=-I$(builddir) -I$(builddir)/obj $(BOOST_CPPFLAGS) $(LEVELDB_CPPFLAGS) $(CRYPTO_CFLAGS) $(SSL_CFLAGS)
 
 BITCOIN_INCLUDES += -I$(srcdir)/secp256k1/include
+BITCOIN_INCLUDES += -I$(srcdir)/univalue/include
 
 LIBBITCOIN_SERVER=libbitcoin_server.a
 LIBBITCOIN_WALLET=libbitcoin_wallet.a
@@ -28,13 +29,16 @@ LIBBITCOIN_COMMON=libbitcoin_common.a
 LIBBITCOIN_CLI=libbitcoin_cli.a
 LIBBITCOIN_UTIL=libbitcoin_util.a
 LIBBITCOIN_CRYPTO=crypto/libbitcoin_crypto.a
-LIBBITCOIN_UNIVALUE=univalue/libbitcoin_univalue.a
 LIBBITCOINQT=qt/libbitcoinqt.a
 LIBSECP256K1=secp256k1/libsecp256k1.la
+LIBUNIVALUE=univalue/lib/libunivalue.la
 LIBZCASH=libzcash.a
 
 $(LIBSECP256K1): $(wildcard secp256k1/src/*) $(wildcard secp256k1/include/*)
 	$(AM_V_at)$(MAKE) $(AM_MAKEFLAGS) -C $(@D) $(@F)
+  
+$(LIBUNIVALUE): $(wildcard univalue/lib/*) $(wildcard univalue/include/*)
+	$(AM_V_at)$(MAKE) $(AM_MAKEFLAGS) -C $(@D) $(@F)
 
 # Make is not made aware of per-object dependencies to avoid limiting building parallelization
 # But to build the less dependent modules first, we manually select their order here:
@@ -42,7 +46,6 @@ EXTRA_LIBRARIES = \
   crypto/libbitcoin_crypto.a \
   libbitcoin_util.a \
   libbitcoin_common.a \
-  univalue/libbitcoin_univalue.a \
   libbitcoin_server.a \
   libbitcoin_cli.a \
   libzcash.a
@@ -287,14 +290,6 @@ crypto_libbitcoin_crypto_a_SOURCES += \
   ${EQUIHASH_TROMP_SOURCES}
 endif
 
-# univalue JSON library
-univalue_libbitcoin_univalue_a_SOURCES = \
-  univalue/univalue.cpp \
-  univalue/univalue.h \
-  univalue/univalue_escapes.h \
-  univalue/univalue_read.cpp \
-  univalue/univalue_write.cpp
-
 # common: shared between bitcoind, and bitcoin-qt and non-server tools
 libbitcoin_common_a_CPPFLAGS = $(BITCOIN_INCLUDES)
 libbitcoin_common_a_SOURCES = \
@@ -374,7 +369,7 @@ endif
 zcashd_LDADD = \
   $(LIBBITCOIN_SERVER) \
   $(LIBBITCOIN_COMMON) \
-  $(LIBBITCOIN_UNIVALUE) \
+  $(LIBUNIVALUE) \
   $(LIBBITCOIN_UTIL) \
   $(LIBBITCOIN_CRYPTO) \
   $(LIBZCASH) \
@@ -411,7 +406,7 @@ endif
 
 zcash_cli_LDADD = \
   $(LIBBITCOIN_CLI) \
-  $(LIBBITCOIN_UNIVALUE) \
+  $(LIBUNIVALUE) \
   $(LIBBITCOIN_UTIL) \
   $(BOOST_LIBS) \
   $(SSL_LIBS) \
@@ -432,7 +427,7 @@ endif
 
 # FIXME: Is libzcash needed for zcash_tx?
 zcash_tx_LDADD = \
-  $(LIBBITCOIN_UNIVALUE) \
+  $(LIBUNIVALUE) \
   $(LIBBITCOIN_COMMON) \
   $(LIBBITCOIN_UTIL) \
   $(LIBSECP256K1) \