diff --git a/configure.ac b/configure.ac
index 5453418a7..5d062a1b5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -714,7 +714,7 @@ CPPFLAGS="-I$LIBSNARK_INCDIR $CPPFLAGS"
 AC_CHECK_HEADER([libsnark/gadgetlib1/gadget.hpp],,AC_MSG_ERROR(libsnark headers missing))
 AC_CHECK_LIB([snark],[main],LIBSNARK_LIBS=-lsnark, [AC_MSG_ERROR(libsnark missing)], [-lgmpxx])
 
-LIBZCASH_LIBS="-lsnark -lgmp -lgmpxx -lboost_system-mt -lcrypto -lsodium"
+LIBZCASH_LIBS="-lsnark -lgmp -lgmpxx -lboost_system-mt -lcrypto -lsodium -fopenmp"
 
 AC_CHECK_LIB([crypto],[RAND_egd],[],[
   AC_ARG_WITH([libressl],
diff --git a/depends/packages/libsnark.mk b/depends/packages/libsnark.mk
index d40956b78..57436e46f 100644
--- a/depends/packages/libsnark.mk
+++ b/depends/packages/libsnark.mk
@@ -15,7 +15,7 @@ define $(package)_preprocess_cmds
 endef
 
 define $(package)_build_cmds
-  CXXFLAGS="-fPIC -DBINARY_OUTPUT -DNO_PT_COMPRESSION=1" $(MAKE) lib DEPINST=$(host_prefix) CURVE=ALT_BN128 NO_PROCPS=1 NO_GTEST=1 NO_DOCS=1 STATIC=1 NO_SUPERCOP=1
+  CXXFLAGS="-fPIC -DBINARY_OUTPUT -DNO_PT_COMPRESSION=1" $(MAKE) lib DEPINST=$(host_prefix) CURVE=ALT_BN128 MULTICORE=1 NO_PROCPS=1 NO_GTEST=1 NO_DOCS=1 STATIC=1 NO_SUPERCOP=1
 endef
 
 define $(package)_stage_cmds
diff --git a/src/Makefile.am b/src/Makefile.am
index 8ce0c47e7..8bd9ff9ad 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -416,7 +416,7 @@ libzcash_a_SOURCES = \
   zcash/prf.cpp \
   zcash/util.cpp
 
-libzcash_a_CPPFLAGS = -fPIC -DBINARY_OUTPUT -DCURVE_ALT_BN128 -DBOOST_SPIRIT_THREADSAFE -DHAVE_BUILD_INFO -D__STDC_FORMAT_MACROS $(HARDENED_CPPFLAGS) -pipe -O2 -O0 -g -Wstack-protector -fstack-protector-all -fPIE -fvisibility=hidden -DSTATIC $(BITCOIN_INCLUDES)
+libzcash_a_CPPFLAGS = -DMULTICORE -fPIC -DBINARY_OUTPUT -DCURVE_ALT_BN128 -DBOOST_SPIRIT_THREADSAFE -DHAVE_BUILD_INFO -D__STDC_FORMAT_MACROS $(HARDENED_CPPFLAGS) -pipe -O2 -O0 -g -Wstack-protector -fstack-protector-all -fPIE -fvisibility=hidden -DSTATIC $(BITCOIN_INCLUDES)
 
 # bitcoinconsensus library #
 if BUILD_BITCOIN_LIBS
diff --git a/src/Makefile.gtest.include b/src/Makefile.gtest.include
index aed865a7c..2b3f64447 100644
--- a/src/Makefile.gtest.include
+++ b/src/Makefile.gtest.include
@@ -11,7 +11,7 @@ zcash_gtest_SOURCES = \
 	gtest/test_merkletree.cpp \
 	gtest/test_circuit.cpp
 
-zcash_gtest_CPPFLAGS = -DBINARY_OUTPUT -DCURVE_ALT_BN128 -DSTATIC
+zcash_gtest_CPPFLAGS = -DMULTICORE -DBINARY_OUTPUT -DCURVE_ALT_BN128 -DSTATIC
 
 zcash_gtest_LDADD = -lgtest $(LIBBITCOIN_SERVER) $(LIBBITCOIN_CLI) $(LIBBITCOIN_COMMON) $(LIBBITCOIN_UTIL) $(LIBBITCOIN_CRYPTO) $(LIBBITCOIN_UNIVALUE) $(LIBLEVELDB) $(LIBMEMENV) \
   $(BOOST_LIBS) $(BOOST_UNIT_TEST_FRAMEWORK_LIB) $(LIBSECP256K1)