Add libgmp to depends

Author: codablock

depends/packages/gmp.mk

@@ -0,0 +1,22 @@
+package=gmp
+$(package)_version=6.1.2
+$(package)_download_path=https://gmplib.org/download/gmp
+$(package)_file_name=gmp-$($(package)_version).tar.bz2
+$(package)_sha256_hash=5275bb04f4863a13516b2f39392ac5e272f5e1bb8057b18aec1c9b79d73d8fb2
+
+define $(package)_set_vars
+$(package)_config_opts+=--enable-cxx --enable-fat --with-pic --disable-shared
+endef
+
+define $(package)_config_cmds
+  $($(package)_autoconf)
+endef
+
+define $(package)_build_cmds
+  $(MAKE)
+endef
+
+define $(package)_stage_cmds
+  $(MAKE) DESTDIR=$($(package)_staging_dir) install
+endef
+

depends/packages/packages.mk

@@ -1,4 +1,4 @@
-packages:=boost openssl libevent zeromq
+packages:=boost openssl libevent zeromq gmp
 native_packages := native_ccache
 
 qt_native_packages = native_protobuf