diff --git a/contrib/depends/Makefile b/contrib/depends/Makefile
index 5f93075db5..8dfd9e8d9c 100644
--- a/contrib/depends/Makefile
+++ b/contrib/depends/Makefile
@@ -152,6 +152,7 @@ $(host_prefix)/share/toolchain.cmake : toolchain.cmake.in $(host_prefix)/.stamp_
             -e 's|@release_type@|$(cmake_release_type)|' \
             -e 's|@build_tests@|$(build_tests)|' \
             -e 's|@cmake_system_name@|$($(host_os)_cmake_system)|' \
+            -e 's|@cmake_system_version@|$($(host_os)_cmake_system_version)|' \
             -e 's|@prefix@|$($(host_arch)_$(host_os)_prefix)|'\
             -e 's|@arch@|$(host_arch)|'\
             $< > $@
diff --git a/contrib/depends/funcs.mk b/contrib/depends/funcs.mk
index 54cdf42e7f..70b284861b 100644
--- a/contrib/depends/funcs.mk
+++ b/contrib/depends/funcs.mk
@@ -153,6 +153,7 @@ $(1)_stage_env+=$($(1)_stage_env_$(host_arch)_$(host_os)) $($(1)_stage_env_$(hos
 
 $(1)_config_env+=PKG_CONFIG_LIBDIR=$($($(1)_type)_prefix)/lib/pkgconfig
 $(1)_config_env+=PKG_CONFIG_PATH=$($($(1)_type)_prefix)/share/pkgconfig
+$(1)_config_env+=CMAKE_MODULE_PATH=$($($(1)_type)_prefix)/lib/cmake
 $(1)_config_env+=PATH="$(build_prefix)/bin:$(PATH)"
 $(1)_build_env+=PATH="$(build_prefix)/bin:$(PATH)"
 $(1)_stage_env+=PATH="$(build_prefix)/bin:$(PATH)"
@@ -185,6 +186,25 @@ endif
 ifneq ($($(1)_ldflags),)
 $(1)_autoconf += LDFLAGS="$$($(1)_ldflags)"
 endif
+
+$(1)_cmake=env CC="$$($(1)_cc)" \
+               CFLAGS="$$($(1)_cppflags) $$($(1)_cflags)" \
+               CXX="$$($(1)_cxx)" \
+               CXXFLAGS="$$($(1)_cppflags) $$($(1)_cxxflags)" \
+               LDFLAGS="$$($(1)_ldflags)" \
+             cmake -DCMAKE_INSTALL_PREFIX:PATH="$$($($(1)_type)_prefix)" $$($(1)_config_opts)
+ifeq ($($(1)_type),build)
+$(1)_cmake += -DCMAKE_INSTALL_RPATH:PATH="$$($($(1)_type)_prefix)/lib"
+else
+ifneq ($(host),$(build))
+$(1)_cmake += -DCMAKE_SYSTEM_NAME=$($(host_os)_cmake_system)
+$(1)_cmake += -DCMAKE_C_COMPILER_TARGET=$(host)
+$(1)_cmake += -DCMAKE_CXX_COMPILER_TARGET=$(host)
+ifneq ($($(host_os)_cmake_system_version),)
+$(1)_cmake += -DCMAKE_SYSTEM_VERSION=$($(host_os)_cmake_system_version)
+endif
+endif
+endif
 endef
 
 define int_add_cmds
diff --git a/contrib/depends/hosts/mingw32.mk b/contrib/depends/hosts/mingw32.mk
index 58a9a929de..2eb5fbda02 100644
--- a/contrib/depends/hosts/mingw32.mk
+++ b/contrib/depends/hosts/mingw32.mk
@@ -11,3 +11,4 @@ mingw32_debug_CXXFLAGS=$(mingw32_debug_CFLAGS)
 mingw32_debug_CPPFLAGS=-D_GLIBCXX_DEBUG -D_GLIBCXX_DEBUG_PEDANTIC
 
 mingw32_cmake_system=Windows
+mingw32_cmake_system_version=10.0
diff --git a/contrib/depends/packages/unbound.mk b/contrib/depends/packages/unbound.mk
index 254636bca5..f1c600d624 100644
--- a/contrib/depends/packages/unbound.mk
+++ b/contrib/depends/packages/unbound.mk
@@ -15,7 +15,6 @@ define $(package)_set_vars
   $(package)_config_opts_w64=--enable-static-exe --sysconfdir=/etc --prefix=$(host_prefix) --target=$(host_prefix)
   $(package)_config_opts_x86_64_darwin=ac_cv_func_SHA384_Init=yes
   $(package)_build_opts_mingw32=LDFLAGS="$($(package)_ldflags) -lpthread"
-  $(package)_cflags_mingw32+="-D_WIN32_WINNT=0x600"
 endef
 
 define $(package)_preprocess_cmds
diff --git a/contrib/depends/toolchain.cmake.in b/contrib/depends/toolchain.cmake.in
index eb0da1877d..9a3ebcb1bb 100644
--- a/contrib/depends/toolchain.cmake.in
+++ b/contrib/depends/toolchain.cmake.in
@@ -1,5 +1,6 @@
 # Set the system name to one of Android, Darwin, FreeBSD, Linux, or Windows
 SET(CMAKE_SYSTEM_NAME @cmake_system_name@)
+SET(CMAKE_SYSTEM_VERSION @cmake_system_version@)
 SET(CMAKE_SYSTEM_PROCESSOR @arch@)
 SET(CMAKE_BUILD_TYPE @release_type@)