depends: don't use -h with touch on OpenBSD

Should fix #29447.

depends/builders/default.mk

@@ -5,13 +5,14 @@ default_build_TAR = tar
 default_build_RANLIB = ranlib
 default_build_STRIP = strip
 default_build_NM = nm
+default_build_TOUCH = touch -h -m -t 200001011200
 
 define add_build_tool_func
 build_$(build_os)_$1 ?= $$(default_build_$1)
 build_$(build_arch)_$(build_os)_$1 ?= $$(build_$(build_os)_$1)
 build_$1=$$(build_$(build_arch)_$(build_os)_$1)
 endef
-$(foreach var,CC CXX AR TAR RANLIB NM STRIP SHA256SUM DOWNLOAD OTOOL INSTALL_NAME_TOOL DSYMUTIL,$(eval $(call add_build_tool_func,$(var))))
+$(foreach var,CC CXX AR TAR RANLIB NM STRIP SHA256SUM DOWNLOAD OTOOL INSTALL_NAME_TOOL DSYMUTIL TOUCH,$(eval $(call add_build_tool_func,$(var))))
 define add_build_flags_func
 build_$(build_arch)_$(build_os)_$1 += $(build_$(build_os)_$1)
 build_$1=$$(build_$(build_arch)_$(build_os)_$1)

depends/builders/openbsd.mk

@@ -5,3 +5,5 @@ build_openbsd_SHA256SUM = sha256
 build_openbsd_DOWNLOAD = curl --location --fail --connect-timeout $(DOWNLOAD_CONNECT_TIMEOUT) --retry $(DOWNLOAD_RETRIES) -o
 
 build_openbsd_TAR = gtar
+# openBSD touch doesn't understand -h
+build_openbsd_TOUCH = touch -m -t 200001011200

depends/funcs.mk

@@ -234,7 +234,7 @@ $($(1)_postprocessed): | $($(1)_staged)
 $($(1)_cached): | $($(1)_dependencies) $($(1)_postprocessed)
 	echo Caching $(1)...
 	cd $$($(1)_staging_dir)/$(host_prefix); \
-	  find . ! -name '.stamp_postprocessed' -print0 | TZ=UTC xargs -0r touch -h -m -t 200001011200; \
+	  find . ! -name '.stamp_postprocessed' -print0 | TZ=UTC xargs -0r $(build_TOUCH); \
 	  find . ! -name '.stamp_postprocessed' | LC_ALL=C sort | $(build_TAR) --numeric-owner --no-recursion -czf $$($(1)_staging_dir)/$$(@F) -T -
 	mkdir -p $$(@D)
 	rm -rf $$(@D) && mkdir -p $$(@D)