Build system recognizes OpenBSD.

CMakeLists.txt

@@ -570,6 +570,8 @@ else()
     set(SWIFT_HOST_VARIANT_SDK_default "LINUX")
   elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "FreeBSD")
     set(SWIFT_HOST_VARIANT_SDK_default "FREEBSD")
+  elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "OpenBSD")
+    set(SWIFT_HOST_VARIANT_SDK_default "OPENBSD")
   elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "CYGWIN")
     set(SWIFT_HOST_VARIANT_SDK_default "CYGWIN")
   elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Windows")
@@ -673,6 +675,15 @@ elseif("${SWIFT_HOST_VARIANT_SDK}" STREQUAL "FREEBSD")
   set(SWIFT_PRIMARY_VARIANT_SDK_default  "${SWIFT_HOST_VARIANT_SDK}")
   set(SWIFT_PRIMARY_VARIANT_ARCH_default "${SWIFT_HOST_VARIANT_ARCH}")
 
+elseif("${SWIFT_HOST_VARIANT_SDK}" STREQUAL "OPENBSD")
+
+  set(SWIFT_HOST_VARIANT "openbsd" CACHE STRING
+      "Deployment OS for Swift host tools (the compiler) [openbsd].")
+
+  configure_sdk_unix("OpenBSD" "${SWIFT_HOST_VARIANT_ARCH}")
+  set(SWIFT_PRIMARY_VARIANT_SDK_default  "${SWIFT_HOST_VARIANT_SDK}")
+  set(SWIFT_PRIMARY_VARIANT_ARCH_default "${SWIFT_HOST_VARIANT_ARCH}")
+
 elseif("${SWIFT_HOST_VARIANT_SDK}" STREQUAL "CYGWIN")
 
   set(SWIFT_HOST_VARIANT "cygwin" CACHE STRING

cmake/modules/FindICU.cmake

@@ -24,7 +24,7 @@ foreach(MODULE ${ICU_FIND_COMPONENTS})
     HINTS ${PC_ICU_${MODULE}_LIBRARY_DIRS})
 endforeach()
 
-foreach(sdk ANDROID;FREEBSD;LINUX;WINDOWS;HAIKU)
+foreach(sdk ANDROID;FREEBSD;OPENBSD;LINUX;WINDOWS;HAIKU)
   foreach(MODULE ${ICU_FIND_COMPONENTS})
     string(TOUPPER "${MODULE}" MODULE)
     if("${SWIFT_${sdk}_${SWIFT_HOST_VARIANT_ARCH}_ICU_${MODULE}_INCLUDE}" STREQUAL "")

cmake/modules/SwiftConfigureSDK.cmake

@@ -320,6 +320,15 @@ macro(configure_sdk_unix name architectures)
         message(STATUS "FreeBSD Version: ${freebsd_system_version}")
 
         set(SWIFT_SDK_FREEBSD_ARCH_x86_64_TRIPLE "x86_64-unknown-freebsd${freebsd_system_version}")
+      elseif("${prefix}" STREQUAL "OPENBSD")
+        if(NOT arch STREQUAL amd64)
+          message(FATAL_ERROR "unsupported arch for OpenBSD: ${arch}")
+        endif()
+
+        string(REPLACE "[-].*" "" openbsd_system_version ${CMAKE_SYSTEM_VERSION})
+        message(STATUS "OpenBSD Version: ${openbsd_system_version}")
+
+        set(SWIFT_SDK_OPENBSD_ARCH_amd64_TRIPLE "amd64-unknown-openbsd${openbsd_system_version}")
       elseif("${prefix}" STREQUAL "CYGWIN")
         if(NOT arch STREQUAL x86_64)
           message(FATAL_ERROR "unsupported arch for cygwin: ${arch}")

cmake/modules/SwiftSetIfArchBitness.cmake

@@ -15,6 +15,7 @@ function(set_if_arch_bitness var_name)
      "${SIA_ARCH}" STREQUAL "armv7s")
     set("${var_name}" "${SIA_CASE_32_BIT}" PARENT_SCOPE)
   elseif("${SIA_ARCH}" STREQUAL "x86_64" OR
+         "${SIA_ARCH}" STREQUAL "amd64" OR
          "${SIA_ARCH}" STREQUAL "arm64" OR
          "${SIA_ARCH}" STREQUAL "arm64e" OR
          "${SIA_ARCH}" STREQUAL "aarch64" OR

stdlib/private/RuntimeUnittest/CMakeLists.txt

@@ -10,6 +10,7 @@ add_swift_target_library(swiftRuntimeUnittest ${SWIFT_STDLIB_LIBRARY_BUILD_TYPES
   SWIFT_MODULE_DEPENDS StdlibUnittest
   SWIFT_MODULE_DEPENDS_LINUX Glibc
   SWIFT_MODULE_DEPENDS_FREEBSD Glibc
+  SWIFT_MODULE_DEPENDS_OPENBSD Glibc
   SWIFT_MODULE_DEPENDS_CYGWIN Glibc
   SWIFT_MODULE_DEPENDS_HAIKU Glibc
   SWIFT_MODULE_DEPENDS_WINDOWS MSVCRT

stdlib/private/StdlibCollectionUnittest/CMakeLists.txt

@@ -21,6 +21,7 @@ add_swift_target_library(swiftStdlibCollectionUnittest ${SWIFT_STDLIB_LIBRARY_BU
   SWIFT_MODULE_DEPENDS StdlibUnittest
   SWIFT_MODULE_DEPENDS_LINUX Glibc
   SWIFT_MODULE_DEPENDS_FREEBSD Glibc
+  SWIFT_MODULE_DEPENDS_OPENBSD Glibc
   SWIFT_MODULE_DEPENDS_CYGWIN Glibc
   SWIFT_MODULE_DEPENDS_HAIKU Glibc
   SWIFT_MODULE_DEPENDS_WINDOWS MSVCRT

stdlib/private/StdlibUnicodeUnittest/CMakeLists.txt

@@ -9,6 +9,7 @@ add_swift_target_library(swiftStdlibUnicodeUnittest ${SWIFT_STDLIB_LIBRARY_BUILD
   SWIFT_MODULE_DEPENDS StdlibUnittest
   SWIFT_MODULE_DEPENDS_LINUX Glibc
   SWIFT_MODULE_DEPENDS_FREEBSD Glibc
+  SWIFT_MODULE_DEPENDS_OPENBSD Glibc
   SWIFT_MODULE_DEPENDS_CYGWIN Glibc
   SWIFT_MODULE_DEPENDS_HAIKU Glibc
   SWIFT_MODULE_DEPENDS_WINDOWS MSVCRT

stdlib/private/StdlibUnittest/CMakeLists.txt

@@ -38,6 +38,7 @@ add_swift_target_library(swiftStdlibUnittest ${SWIFT_STDLIB_LIBRARY_BUILD_TYPES}
   SWIFT_MODULE_DEPENDS_WATCHOS Darwin Foundation
   SWIFT_MODULE_DEPENDS_LINUX Glibc
   SWIFT_MODULE_DEPENDS_FREEBSD Glibc
+  SWIFT_MODULE_DEPENDS_OPENBSD Glibc
   SWIFT_MODULE_DEPENDS_CYGWIN Glibc
   SWIFT_MODULE_DEPENDS_HAIKU Glibc
   SWIFT_MODULE_DEPENDS_WINDOWS MSVCRT WinSDK

stdlib/private/SwiftPrivateLibcExtras/CMakeLists.txt

@@ -15,6 +15,7 @@ add_swift_target_library(swiftSwiftPrivateLibcExtras ${SWIFT_STDLIB_LIBRARY_BUIL
   SWIFT_MODULE_DEPENDS_WATCHOS Darwin
   SWIFT_MODULE_DEPENDS_LINUX Glibc
   SWIFT_MODULE_DEPENDS_FREEBSD Glibc
+  SWIFT_MODULE_DEPENDS_OPENBSD Glibc
   SWIFT_MODULE_DEPENDS_CYGWIN Glibc
   SWIFT_MODULE_DEPENDS_HAIKU Glibc
   SWIFT_MODULE_DEPENDS_WINDOWS MSVCRT WinSDK

stdlib/private/SwiftPrivateThreadExtras/CMakeLists.txt

@@ -12,11 +12,12 @@ add_swift_target_library(swiftSwiftPrivateThreadExtras ${SWIFT_STDLIB_LIBRARY_BU
   SWIFT_MODULE_DEPENDS_WATCHOS Darwin
   SWIFT_MODULE_DEPENDS_LINUX Glibc
   SWIFT_MODULE_DEPENDS_FREEBSD Glibc
+  SWIFT_MODULE_DEPENDS_OPENBSD Glibc
   SWIFT_MODULE_DEPENDS_CYGWIN Glibc
   SWIFT_MODULE_DEPENDS_HAIKU Glibc
   SWIFT_MODULE_DEPENDS_WINDOWS MSVCRT WinSDK
   SWIFT_COMPILE_FLAGS ${SWIFT_STANDARD_LIBRARY_SWIFT_FLAGS}
-  TARGET_SDKS ALL_APPLE_PLATFORMS CYGWIN FREEBSD HAIKU LINUX WINDOWS ANDROID
+  TARGET_SDKS ALL_APPLE_PLATFORMS CYGWIN FREEBSD OPENBSD HAIKU LINUX WINDOWS ANDROID
   INSTALL_IN_COMPONENT stdlib-experimental
   DARWIN_INSTALL_NAME_DIR "${SWIFT_DARWIN_STDLIB_PRIVATE_INSTALL_NAME_DIR}")
 

stdlib/public/Platform/CMakeLists.txt

@@ -44,7 +44,7 @@ add_swift_target_library(swiftGlibc ${SWIFT_STDLIB_LIBRARY_BUILD_TYPES} IS_SDK_O
       ${SWIFT_RUNTIME_SWIFT_COMPILE_FLAGS}
       ${SWIFT_STANDARD_LIBRARY_SWIFT_FLAGS}
     LINK_FLAGS "${SWIFT_RUNTIME_SWIFT_LINK_FLAGS}"
-    TARGET_SDKS ANDROID CYGWIN FREEBSD LINUX HAIKU
+    TARGET_SDKS ANDROID CYGWIN FREEBSD OPENBSD LINUX HAIKU
     INSTALL_IN_COMPONENT sdk-overlay
     DEPENDS glibc_modulemap)
 
@@ -68,6 +68,7 @@ set(glibc_modulemap_target_list)
 foreach(sdk ${SWIFT_SDKS})
   if(NOT "${sdk}" STREQUAL "LINUX" AND
      NOT "${sdk}" STREQUAL "FREEBSD" AND
+     NOT "${sdk}" STREQUAL "OPENBSD" AND
      NOT "${sdk}" STREQUAL "ANDROID" AND
      NOT "${sdk}" STREQUAL "CYGWIN" AND
      NOT "${sdk}" STREQUAL "HAIKU")

test/CMakeLists.txt

@@ -92,6 +92,7 @@ function(get_test_dependencies SDK result_var_name)
      ("${SDK}" STREQUAL "LINUX") OR
      ("${SDK}" STREQUAL "CYGWIN") OR
      ("${SDK}" STREQUAL "FREEBSD") OR
+     ("${SDK}" STREQUAL "OPENBSD") OR
      ("${SDK}" STREQUAL "ANDROID") OR
      ("${SDK}" STREQUAL "WINDOWS") OR
      ("${SDK}" STREQUAL "HAIKU"))

utils/build-script-impl

@@ -404,6 +404,7 @@ function verify_host_is_supported() {
     local host="$1"
     case ${host} in
       freebsd-x86_64            \
+      | openbsd-amd64           \
       | cygwin-x86_64           \
       | haiku-x86_64            \
       | linux-x86_64            \

utils/swift_build_support/swift_build_support/targets.py

@@ -150,6 +150,8 @@ class StdlibDeploymentTarget(object):
 
     FreeBSD = Platform("freebsd", archs=["x86_64"])
 
+    OpenBSD = Platform("openbsd", archs=["amd64"])
+
     Cygwin = Platform("cygwin", archs=["x86_64"])
 
     Android = AndroidPlatform("android", archs=["armv7", "aarch64"])
@@ -166,6 +168,7 @@ class StdlibDeploymentTarget(object):
         AppleWatch, AppleWatchSimulator,
         Linux,
         FreeBSD,
+        OpenBSD,
         Cygwin,
         Android,
         Windows,
@@ -221,6 +224,10 @@ def host_target():
             if machine == 'amd64':
                 return StdlibDeploymentTarget.FreeBSD.x86_64
 
+        elif system == 'OpenBSD':
+            if machine == 'amd64':
+                return StdlibDeploymentTarget.OpenBSD.amd64
+
         elif system == 'CYGWIN_NT-10.0':
             if machine == 'x86_64':
                 return StdlibDeploymentTarget.Cygwin.x86_64

utils/swift_build_support/swift_build_support/toolchain.py

@@ -176,6 +176,11 @@ def _release_date(self):
         return int(out)
 
 
+class OpenBSD(GenericUnix):
+    def __init__(self):
+        super(OpenBSD, self).__init__([''])
+
+
 class Cygwin(Linux):
     # Currently, Cygwin is considered as the same as Linux.
     pass
@@ -203,6 +208,8 @@ def host_toolchain(**kwargs):
         return Linux()
     elif sys == 'FreeBSD':
         return FreeBSD()
+    elif sys == 'OpenBSD':
+        return OpenBSD()
     elif sys.startswith('CYGWIN'):
         return Cygwin()
     elif sys == 'Windows':