merge bitcoin#23998: support OpenBSD in depends

excludes `fix_openbsd_test_lib.patch` as it's already present

```
Preprocessing boost...
patching file boost/test/impl/execution_monitor.ipp
Reversed (or previously applied) patch detected!  Assume -R? [n]
```

depends/Makefile

@@ -72,6 +72,7 @@ full_build_os:=$(subst $(build_arch)-$(build_vendor)-,,$(build))
 build_os:=$(findstring linux,$(full_build_os))
 build_os+=$(findstring darwin,$(full_build_os))
 build_os+=$(findstring freebsd,$(full_build_os))
+build_os+=$(findstring openbsd,$(full_build_os))
 build_os:=$(strip $(build_os))
 ifeq ($(build_os),)
 build_os=$(full_build_os)
@@ -83,6 +84,7 @@ full_host_os:=$(subst $(host_arch)-$(host_vendor)-,,$(canonical_host))
 host_os:=$(findstring linux,$(full_host_os))
 host_os+=$(findstring darwin,$(full_host_os))
 host_os+=$(findstring freebsd,$(full_host_os))
+host_os+=$(findstring openbsd,$(full_host_os))
 host_os+=$(findstring mingw32,$(full_host_os))
 
 ifeq (android,$(findstring android,$(full_host_os)))
@@ -170,7 +172,7 @@ $(host_prefix)/.stamp_$(final_build_id): $(native_packages) $(packages)
 	mkdir -p $(@D)
 	echo copying packages: $^
 	echo to: $(@D)
-	cd $(@D); $(foreach package,$^, tar xf $($(package)_cached); )
+	cd $(@D); $(foreach package,$^, $(build_TAR) xf $($(package)_cached); )
 	touch $@
 
 # $PATH is not preserved between ./configure and make by convention. Its

depends/README.md

@@ -84,6 +84,10 @@ For linux S390X cross compilation:
 
     sudo apt-get install g++-s390x-linux-gnu binutils-s390x-linux-gnu
 
+### Install the required dependencies: OpenBSD
+
+    pkg_add bash gtar
+
 ### Dependency Options
 The following can be set when running make: `make FOO=bar`
 

depends/builders/default.mk

@@ -1,6 +1,7 @@
 default_build_CC = gcc
 default_build_CXX = g++
 default_build_AR = ar
+default_build_TAR = tar
 default_build_RANLIB = ranlib
 default_build_STRIP = strip
 default_build_NM = nm
@@ -12,7 +13,7 @@ build_$(build_os)_$1 ?= $$(default_build_$1)
 build_$(build_arch)_$(build_os)_$1 ?= $$(build_$(build_os)_$1)
 build_$1=$$(build_$(build_arch)_$(build_os)_$1)
 endef
-$(foreach var,CC CXX AR RANLIB NM STRIP SHA256SUM DOWNLOAD OTOOL INSTALL_NAME_TOOL,$(eval $(call add_build_tool_func,$(var))))
+$(foreach var,CC CXX AR TAR RANLIB NM STRIP SHA256SUM DOWNLOAD OTOOL INSTALL_NAME_TOOL,$(eval $(call add_build_tool_func,$(var))))
 define add_build_flags_func
 build_$(build_arch)_$(build_os)_$1 += $(build_$(build_os)_$1)
 build_$1=$$(build_$(build_arch)_$(build_os)_$1)

depends/builders/openbsd.mk

@@ -0,0 +1,7 @@
+build_openbsd_CC = clang
+build_openbsd_CXX = clang++
+
+build_openbsd_SHA256SUM = sha256
+build_openbsd_DOWNLOAD = curl --location --fail --connect-timeout $(DOWNLOAD_CONNECT_TIMEOUT) --retry $(DOWNLOAD_RETRIES) -o
+
+build_openbsd_TAR = gtar

depends/funcs.mk

@@ -86,7 +86,7 @@ $(1)_download_path_fixed=$(subst :,\:,$$($(1)_download_path))
 #default commands
 # The default behavior for tar will try to set ownership when running as uid 0 and may not succeed, --no-same-owner disables this behavior
 $(1)_fetch_cmds ?= $(call fetch_file,$(1),$(subst \:,:,$$($(1)_download_path_fixed)),$$($(1)_download_file),$($(1)_file_name),$($(1)_sha256_hash))
-$(1)_extract_cmds ?= mkdir -p $$($(1)_extract_dir) && echo "$$($(1)_sha256_hash)  $$($(1)_source)" > $$($(1)_extract_dir)/.$$($(1)_file_name).hash &&  $(build_SHA256SUM) -c $$($(1)_extract_dir)/.$$($(1)_file_name).hash && tar --no-same-owner --strip-components=1 -xf $$($(1)_source)
+$(1)_extract_cmds ?= mkdir -p $$($(1)_extract_dir) && echo "$$($(1)_sha256_hash)  $$($(1)_source)" > $$($(1)_extract_dir)/.$$($(1)_file_name).hash &&  $(build_SHA256SUM) -c $$($(1)_extract_dir)/.$$($(1)_file_name).hash && $(build_TAR) --no-same-owner --strip-components=1 -xf $$($(1)_source)
 $(1)_preprocess_cmds ?=
 $(1)_build_cmds ?=
 $(1)_config_cmds ?=
@@ -187,7 +187,7 @@ $($(1)_preprocessed): | $($(1)_extracted)
 	touch $$@
 $($(1)_configured): | $($(1)_dependencies) $($(1)_preprocessed)
 	echo Configuring $(1)...
-	rm -rf $(host_prefix); mkdir -p $(host_prefix)/lib; cd $(host_prefix); $(foreach package,$($(1)_all_dependencies), tar --no-same-owner -xf $($(package)_cached); )
+	rm -rf $(host_prefix); mkdir -p $(host_prefix)/lib; cd $(host_prefix); $(foreach package,$($(1)_all_dependencies), $(build_TAR) --no-same-owner -xf $($(package)_cached); )
 	mkdir -p $$(@D)
 	+cd $$(@D); $($(1)_config_env) $(call $(1)_config_cmds, $(1))
 	touch $$@
@@ -208,7 +208,7 @@ $($(1)_postprocessed): | $($(1)_staged)
 	touch $$@
 $($(1)_cached): | $($(1)_dependencies) $($(1)_postprocessed)
 	echo Caching $(1)...
-	cd $$($(1)_staging_dir)/$(host_prefix); find . | sort | tar --no-recursion -czf $$($(1)_staging_dir)/$$(@F) -T -
+	cd $$($(1)_staging_dir)/$(host_prefix); find . | sort | $(build_TAR) --no-recursion -czf $$($(1)_staging_dir)/$$(@F) -T -
 	mkdir -p $$(@D)
 	rm -rf $$(@D) && mkdir -p $$(@D)
 	mv $$($(1)_staging_dir)/$$(@F) $$(@)

depends/hosts/openbsd.mk

@@ -0,0 +1,31 @@
+openbsd_CFLAGS=-pipe
+openbsd_CFLAGS_CXXFLAGS=$(openbsd_CFLAGS)
+
+openbsd_CFLAGS_release_CFLAGS=-O2
+openbsd_CFLAGS_release_CXXFLAGS=$(openbsd_release_CFLAGS)
+
+openbsd_CFLAGS_debug_CFLAGS=-O1
+openbsd_CFLAGS_debug_CXXFLAGS=$(openbsd_debug_CFLAGS)
+
+ifeq (86,$(findstring 86,$(build_arch)))
+i686_openbsd_CC=clang -m32
+i686_openbsd_CXX=clang++ -m32
+i686_openbsd_AR=ar
+i686_openbsd_RANLIB=ranlib
+i686_openbsd_NM=nm
+i686_openbsd_STRIP=strip
+
+x86_64_openbsd_CC=clang -m64
+x86_64_openbsd_CXX=clang++ -m64
+x86_64_openbsd_AR=ar
+x86_64_openbsd_RANLIB=ranlib
+x86_64_openbsd_NM=nm
+x86_64_openbsd_STRIP=strip
+else
+i686_openbsd_CC=$(default_host_CC) -m32
+i686_openbsd_CXX=$(default_host_CXX) -m32
+x86_64_openbsd_CC=$(default_host_CC) -m64
+x86_64_openbsd_CXX=$(default_host_CXX) -m64
+endif
+
+openbsd_cmake_system=OpenBSD

depends/packages/bdb.mk

@@ -11,6 +11,7 @@ $(package)_config_opts=--disable-shared --enable-cxx --disable-replication --ena
 $(package)_config_opts_mingw32=--enable-mingw
 $(package)_config_opts_linux=--with-pic
 $(package)_config_opts_freebsd=--with-pic
+$(package)_config_opts_openbsd=--with-pic
 $(package)_config_opts_android=--with-pic
 $(package)_cflags+=-Wno-error=implicit-function-declaration
 $(package)_cxxflags=-std=c++17

depends/packages/boost.mk

@@ -30,6 +30,7 @@ $(package)_config_libraries=filesystem,thread,test
 $(package)_cxxflags=-std=c++17 -fvisibility=hidden
 $(package)_cxxflags_linux=-fPIC
 $(package)_cxxflags_freebsd=-fPIC
+$(package)_cxxflags_openbsd=-fPIC
 $(package)_cxxflags_android=-fPIC
 $(package)_cxxflags_x86_64=-fcf-protection=full
 endef

depends/packages/libevent.mk

@@ -13,6 +13,7 @@ define $(package)_set_vars
   $(package)_config_opts_release=--disable-debug-mode
   $(package)_config_opts_linux=--with-pic
   $(package)_config_opts_freebsd=--with-pic
+  $(package)_config_opts_openbsd=--with-pic
   $(package)_config_opts_android=--with-pic
   $(package)_cppflags_mingw32=-D_WIN32_WINNT=0x0601
 endef

depends/packages/qt.mk

@@ -208,11 +208,11 @@ define $(package)_extract_cmds
   echo "$($(package)_qttools_sha256_hash)  $($(package)_source_dir)/$($(package)_qttools_file_name)" >> $($(package)_extract_dir)/.$($(package)_file_name).hash && \
   $(build_SHA256SUM) -c $($(package)_extract_dir)/.$($(package)_file_name).hash && \
   mkdir qtbase && \
-  tar --no-same-owner --strip-components=1 -xf $($(package)_source) -C qtbase && \
+  $(build_TAR) --no-same-owner --strip-components=1 -xf $($(package)_source) -C qtbase && \
   mkdir qttranslations && \
-  tar --no-same-owner --strip-components=1 -xf $($(package)_source_dir)/$($(package)_qttranslations_file_name) -C qttranslations && \
+  $(build_TAR) --no-same-owner --strip-components=1 -xf $($(package)_source_dir)/$($(package)_qttranslations_file_name) -C qttranslations && \
   mkdir qttools && \
-  tar --no-same-owner --strip-components=1 -xf $($(package)_source_dir)/$($(package)_qttools_file_name) -C qttools
+  $(build_TAR) --no-same-owner --strip-components=1 -xf $($(package)_source_dir)/$($(package)_qttools_file_name) -C qttools
 endef
 
 # Preprocessing steps work as follows:

depends/packages/sqlite.mk

@@ -8,6 +8,7 @@ define $(package)_set_vars
 $(package)_config_opts=--disable-shared --disable-readline --disable-dynamic-extensions --enable-option-checking
 $(package)_config_opts_linux=--with-pic
 $(package)_config_opts_freebsd=--with-pic
+$(package)_config_opts_openbsd=--with-pic
 endef
 
 define $(package)_preprocess_cmds

depends/packages/zeromq.mk

@@ -11,6 +11,7 @@ define $(package)_set_vars
   $(package)_config_opts += --disable-Werror --disable-drafts --enable-option-checking
   $(package)_config_opts_linux=--with-pic
   $(package)_config_opts_freebsd=--with-pic
+  $(package)_config_opts_openbsd=--with-pic
   $(package)_config_opts_android=--with-pic
   $(package)_cxxflags=-std=c++17
 endef