secp256k1: Add build-side changes for libsecp256k1

Note: This is added to our existing automake targets rather than as a
libtool-style lib. The switch to libtool-style targets can come later if it
proves to not add any complications.

7 files changed, 32 insertions, 1 deletions

diff --git a/Makefile.am b/Makefile.am
index 719af42ac7..3a6a6b6d88 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -35,6 +35,7 @@ COVERAGE_INFO = baseline_filtered_combined.info baseline.info block_test.info \
 
 dist-hook:
 	-$(MAKE) -C $(top_distdir)/src/leveldb clean
+	-$(MAKE) -C $(top_distdir)/src/secp256k1 distclean
 	-$(GIT) archive --format=tar HEAD -- src/version.cpp | $(AMTAR) -C $(top_distdir) -xf -
 
 distcheck-hook:
diff --git a/configure.ac b/configure.ac
index 925ac41ad4..2a4636e360 100644
--- a/configure.ac
+++ b/configure.ac
@@ -680,6 +680,7 @@ AM_CONDITIONAL([USE_LCOV],[test x$use_lcov == xyes])
 AM_CONDITIONAL([USE_COMPARISON_TOOL],[test x$use_comparison_tool != xno])
 AM_CONDITIONAL([USE_COMPARISON_TOOL_REORG_TESTS],[test x$use_comparison_tool_reorg_test != xno])
 AM_CONDITIONAL([GLIBC_BACK_COMPAT],[test x$use_glibc_compat = xyes])
+AM_CONDITIONAL([USE_LIBSECP256K1],[test x$use_libsecp256k1 = xyes])
 
 AC_DEFINE(CLIENT_VERSION_MAJOR, _CLIENT_VERSION_MAJOR, [Major version])
 AC_DEFINE(CLIENT_VERSION_MINOR, _CLIENT_VERSION_MINOR, [Minor version])
diff --git a/src/Makefile.am b/src/Makefile.am
index 9c7b294d35..e2a62c9699 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,6 +1,10 @@
 AM_CPPFLAGS =  $(INCLUDES)
 AM_LDFLAGS = $(PTHREAD_CFLAGS)
 
+if USE_LIBSECP256K1
+secp256k1/libsecp256k1.la: $(wildcard secp256k1/src/*) $(wildcard secp256k1/include/*)
+	@$(MAKE) $(AM_MAKEFLAGS) -C $(@D) $(@F)
+endif
 
 if EMBEDDED_LEVELDB
 LEVELDB_CPPFLAGS += -I$(srcdir)/leveldb/include
@@ -20,6 +24,10 @@ endif
 BITCOIN_CONFIG_INCLUDES=-I$(builddir)/config
 BITCOIN_INCLUDES=-I$(builddir) -I$(builddir)/obj $(BOOST_CPPFLAGS) $(LEVELDB_CPPFLAGS)
 
+if USE_LIBSECP256K1
+BITCOIN_INCLUDES += -I$(srcdir)/secp256k1/include
+endif
+
 LIBBITCOIN_SERVER=libbitcoin_server.a
 LIBBITCOIN_WALLET=libbitcoin_wallet.a
 LIBBITCOIN_COMMON=libbitcoin_common.a
@@ -220,6 +228,11 @@ bitcoind_LDADD = \
   $(LIBBITCOIN_CRYPTO) \
   $(LIBLEVELDB) \
   $(LIBMEMENV)
+
+if USE_LIBSECP256K1
+  bitcoind_LDADD += secp256k1/libsecp256k1.la
+endif
+
 if ENABLE_WALLET
 bitcoind_LDADD += libbitcoin_wallet.a
 endif
@@ -242,6 +255,10 @@ bitcoin_cli_LDADD = \
   $(BOOST_LIBS)
 bitcoin_cli_SOURCES = \
   bitcoin-cli.cpp
+
+if USE_LIBSECP256K1
+  bitcoin_cli_LDADD += secp256k1/libsecp256k1.la
+endif
 bitcoin_cli_CPPFLAGS = $(BITCOIN_INCLUDES)
 #
 
@@ -253,10 +270,11 @@ CLEANFILES = leveldb/libleveldb.a leveldb/libmemenv.a *.gcda *.gcno
 
 DISTCLEANFILES = obj/build.h
 
-EXTRA_DIST = leveldb
+EXTRA_DIST = leveldb secp256k1
 
 clean-local:
 	-$(MAKE) -C leveldb clean
+	-$(MAKE) -C secp256k1 clean
 	rm -f leveldb/*/*.gcno leveldb/helpers/memenv/*.gcno
 	-rm -f config.h
 
diff --git a/src/Makefile.qt.include b/src/Makefile.qt.include
index 9df0779ba3..4563bb3565 100644
--- a/src/Makefile.qt.include
+++ b/src/Makefile.qt.include
@@ -357,6 +357,9 @@ qt_bitcoin_qt_LDADD += $(LIBBITCOIN_WALLET)
 endif
 qt_bitcoin_qt_LDADD += $(LIBBITCOIN_CLI) $(LIBBITCOIN_COMMON) $(LIBBITCOIN_UTIL) $(LIBBITCOIN_CRYPTO) $(LIBLEVELDB) $(LIBMEMENV) \
   $(BOOST_LIBS) $(QT_LIBS) $(QT_DBUS_LIBS) $(QR_LIBS) $(PROTOBUF_LIBS) $(BDB_LIBS)
+if USE_LIBSECP256K1
+  qt_bitcoin_qt_LDADD += secp256k1/libsecp256k1.la
+endif
 qt_bitcoin_qt_LDFLAGS = $(QT_LDFLAGS)
 
 #locale/foo.ts -> locale/foo.qm
diff --git a/src/Makefile.qttest.include b/src/Makefile.qttest.include
index a509f23755..7e10ce5a96 100644
--- a/src/Makefile.qttest.include
+++ b/src/Makefile.qttest.include
@@ -33,6 +33,9 @@ endif
 qt_test_test_bitcoin_qt_LDADD += $(LIBBITCOIN_CLI) $(LIBBITCOIN_COMMON) $(LIBBITCOIN_UTIL) $(LIBBITCOIN_CRYPTO) $(LIBLEVELDB) \
   $(LIBMEMENV) $(BOOST_LIBS) $(QT_DBUS_LIBS) $(QT_TEST_LIBS) $(QT_LIBS) \
   $(QR_LIBS) $(PROTOBUF_LIBS) $(BDB_LIBS)
+if USE_LIBSECP256K1
+  qt_test_test_bitcoin_qt_LDADD += secp256k1/libsecp256k1.la
+endif
 qt_test_test_bitcoin_qt_LDFLAGS = $(QT_LDFLAGS)
 
 CLEAN_BITCOIN_QT_TEST = $(TEST_QT_MOC_CPP) qt/test/*.gcda qt/test/*.gcno
diff --git a/src/Makefile.test.include b/src/Makefile.test.include
index 8685452c7b..12b90adca3 100644
--- a/src/Makefile.test.include
+++ b/src/Makefile.test.include
@@ -69,6 +69,11 @@ test_test_bitcoin_LDADD = $(LIBBITCOIN_SERVER) $(LIBBITCOIN_CLI) $(LIBBITCOIN_CO
 if ENABLE_WALLET
 test_test_bitcoin_LDADD += $(LIBBITCOIN_WALLET)
 endif
+
+if USE_LIBSECP256K1
+  test_test_bitcoin_LDADD += secp256k1/libsecp256k1.la
+endif
+
 test_test_bitcoin_LDADD += $(BDB_LIBS)
 
 nodist_test_test_bitcoin_SOURCES = $(GENERATED_TEST_FILES)
diff --git a/src/secp256k1/.empty b/src/secp256k1/.empty
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/src/secp256k1/.empty