build: add support for OpenBSD to depends

depends/Makefile

@@ -79,6 +79,7 @@ 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=$(full_build_os)
@@ -90,6 +91,7 @@ full_host_os:=$(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)))

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/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/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

@@ -4,6 +4,7 @@ $(package)_download_path=https://boostorg.jfrog.io/artifactory/main/release/$(su
 $(package)_file_name=boost_$($(package)_version).tar.bz2
 $(package)_sha256_hash=d73a8da01e8bf8c7eda40b4c84915071a8c8a0df4a6734537ddde4a8580524ee
 $(package)_dependencies=native_b2
+$(package)_patches=fix_openbsd_test_lib.patch
 
 define $(package)_set_vars
 $(package)_config_opts_release=variant=release
@@ -26,11 +27,13 @@ $(package)_config_libraries=test
 $(package)_cxxflags+=-std=c++17
 $(package)_cxxflags_linux=-fPIC
 $(package)_cxxflags_freebsd=-fPIC
+$(package)_cxxflags_openbsd=-fPIC
 $(package)_cxxflags_android=-fPIC
 $(package)_cxxflags_x86_64=-fcf-protection=full
 endef
 
 define $(package)_preprocess_cmds
+  patch -p1 < $($(package)_patch_dir)/fix_openbsd_test_lib.patch && \
   echo "using $($(package)_toolset_$(host_os)) : : $($(package)_cxx) : <cflags>\"$($(package)_cflags)\" <cxxflags>\"$($(package)_cxxflags)\" <compileflags>\"$($(package)_cppflags)\" <linkflags>\"$($(package)_ldflags)\" <archiver>\"$($(package)_ar)\" <striper>\"$(host_STRIP)\"  <ranlib>\"$(host_RANLIB)\" <rc>\"$(host_WINDRES)\" : ;" > user-config.jam
 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/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

@@ -13,6 +13,7 @@ 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

depends/patches/boost/fix_openbsd_test_lib.patch

@@ -0,0 +1,38 @@
+commit 684f067dde3b798877655cdda4eab8d7c26b2510
+Author: George Koehler <kernigh@gmail.com>
+Date:   Thu Oct 3 20:06:38 2019 -0400
+
+    OpenBSD is missing SI_ASYNCIO and SI_MESGQ
+
+    Check if SI_ASYNCIO and SI_MESGQ are defined as macros.  This allows
+    to run tests on OpenBSD 6.5, where the macros are missing.
+
+    This is identical to patch-boost_test_impl_execution_monitor_ipp in
+    OpenBSD Ports, except that I added a comment.
+
+    Can be removed when we use Boost 1.72.x or later.
+
+diff --git a/boost/test/impl/execution_monitor.ipp b/boost/test/impl/execution_monitor.ipp
+index ccc44972..77a01e21 100644
+--- a/boost/test/impl/execution_monitor.ipp
++++ b/boost/test/impl/execution_monitor.ipp
+@@ -391,14 +391,19 @@ system_signal_exception::report() const
+         report_error( execution_exception::system_error,
+                       "signal: the expiration of a timer set by timer_settimer()" );
+         break;
++// OpenBSD was missing SI_ASYNCIO and SI_MESGQ
++#ifdef SI_ASYNCIO
+     case SI_ASYNCIO:
+         report_error( execution_exception::system_error,
+                       "signal: generated by the completion of an asynchronous I/O request" );
+         break;
++#endif
++#ifdef SI_MESGQ
+     case SI_MESGQ:
+         report_error( execution_exception::system_error,
+                       "signal: generated by the the arrival of a message on an empty message queue" );
+         break;
++#endif
+     default:
+         break;
+     }