diff --git a/android-ndk-r18b-api-28-arm64-v8a-clang-libcxx11.cmake b/android-ndk-r18b-api-28-arm64-v8a-clang-libcxx11.cmake
new file mode 100644
index 00000000..593b4dd6
--- /dev/null
+++ b/android-ndk-r18b-api-28-arm64-v8a-clang-libcxx11.cmake
@@ -0,0 +1,33 @@
+# Copyright (c) 2015-2018, Ruslan Baratov
+# Copyright (c) 2017-2018, Robert Nitsch
+# Copyright (c) 2018, David Hirvonen
+# All rights reserved.
+
+if(DEFINED POLLY_ANDROID_NDK_R18b_API_28_ARM64_V8A_CLANG_LIBCXX11_CMAKE_)
+  return()
+else()
+  set(POLLY_ANDROID_NDK_R18b_API_28_ARM64_V8A_CLANG_LIBCXX11_CMAKE_ 1)
+endif()
+
+include("${CMAKE_CURRENT_LIST_DIR}/utilities/polly_clear_environment_variables.cmake")
+
+include("${CMAKE_CURRENT_LIST_DIR}/utilities/polly_init.cmake")
+
+set(ANDROID_NDK_VERSION "r18b")
+set(CMAKE_SYSTEM_VERSION "28")
+set(CMAKE_ANDROID_ARCH_ABI "arm64-v8a")
+set(CMAKE_ANDROID_NDK_TOOLCHAIN_VERSION "clang")
+set(CMAKE_ANDROID_STL_TYPE "c++_static") # LLVM libc++ static
+
+polly_init(
+    "Android NDK ${ANDROID_NDK_VERSION} / \
+API ${CMAKE_SYSTEM_VERSION} / ${CMAKE_ANDROID_ARCH_ABI} / \
+Clang / c++11 support / libc++ static"
+    "Unix Makefiles"
+)
+
+include("${CMAKE_CURRENT_LIST_DIR}/utilities/polly_common.cmake")
+
+include("${CMAKE_CURRENT_LIST_DIR}/flags/cxx11.cmake") # before toolchain!
+
+include("${CMAKE_CURRENT_LIST_DIR}/os/android.cmake")
diff --git a/bin/detail/toolchain_table.py b/bin/detail/toolchain_table.py
index bcaecdcb..83231057 100644
--- a/bin/detail/toolchain_table.py
+++ b/bin/detail/toolchain_table.py
@@ -169,6 +169,7 @@ def verify(self):
     Toolchain('android-ndk-r17-api-19-armeabi-v7a-neon-clang-libcxx', 'Unix Makefiles'),
     Toolchain('android-ndk-r18-api-24-arm64-v8a-clang-libcxx14', 'Unix Makefiles'),
     Toolchain('android-ndk-r18b-api-24-arm64-v8a-clang-libcxx11', 'Unix Makefiles'),
+    Toolchain('android-ndk-r18b-api-28-arm64-v8a-clang-libcxx11', 'Unix Makefiles'),
     Toolchain('android-ndk-r18b-api-16-armeabi-v7a-clang-libcxx', 'Unix Makefiles'),
     Toolchain('android-ndk-r18b-api-21-arm64-v8a-clang-libcxx', 'Unix Makefiles'),
     Toolchain('android-ndk-r18b-api-21-armeabi-v7a-clang-libcxx', 'Unix Makefiles'),
@@ -507,12 +508,14 @@ def verify(self):
 if platform.system() == 'Darwin':
   toolchain_table += [
       Toolchain('ios', 'Xcode'),
+      Toolchain('ios-12-3-dep-9-3-arm64', 'Xcode', ios_version='12.3'),
       Toolchain('ios-12-2-dep-9-3-arm64', 'Xcode', ios_version='12.2'),
       Toolchain('ios-12-1-dep-9-0-device-bitcode-cxx14', 'Xcode', ios_version='12.1'),
       Toolchain('ios-12-1-dep-9-0-device-bitcode-cxx17', 'Xcode', ios_version='12.1'),
       Toolchain('ios-12-0-dep-11-0-arm64', 'Xcode', ios_version='12.0'),
       Toolchain('ios-12-1-dep-11-0-arm64', 'Xcode', ios_version='12.1'),
       Toolchain('ios-12-1-dep-12-0-arm64-cxx17', 'Xcode', ios_version='12.1'),
+      Toolchain('ios-12-1-dep-9-3-arm64-bitcode', 'Xcode', ios_version='12.1'),
       Toolchain('ios-12-1-dep-9-3-arm64', 'Xcode', ios_version='12.1'),
       Toolchain('ios-12-1-dep-9-3-armv7', 'Xcode', ios_version='12.1'),
       Toolchain('ios-12-1-dep-9-3', 'Xcode', ios_version='12.1'),
@@ -723,6 +726,11 @@ def verify(self):
       Toolchain('osx-10-14-dep-10-12-cxx17', 'Xcode', osx_version='10.14'),
       Toolchain('osx-10-14-cxx14', 'Xcode', osx_version='10.14'),
       Toolchain('osx-10-14-cxx17', 'Xcode', osx_version='10.14'),
+      Toolchain('osx-10-15', 'Xcode', osx_version='10.15'),
+      Toolchain('osx-10-15-dep-10-10', 'Xcode', osx_version='10.15'),
+      Toolchain('osx-10-15-dep-10-10-cxx14', 'Xcode', osx_version='10.15'),
+      Toolchain('osx-10-15-dep-10-10-cxx17', 'Xcode', osx_version='10.15'),
+      Toolchain('osx-10-15-dep-10-12-cxx17', 'Xcode', osx_version='10.15'),
       Toolchain('linux-gcc-x64', 'Unix Makefiles'),
   ]
 
diff --git a/ios-12-1-dep-9-3-arm64-bitcode.cmake b/ios-12-1-dep-9-3-arm64-bitcode.cmake
new file mode 100644
index 00000000..19deb423
--- /dev/null
+++ b/ios-12-1-dep-9-3-arm64-bitcode.cmake
@@ -0,0 +1,44 @@
+# Copyright (c) 2017-2018, Ruslan Baratov
+# All rights reserved.
+
+if(DEFINED POLLY_IOS_12_1_DEP_9_3_ARM64_BITCODE_CMAKE_)
+  return()
+else()
+  set(POLLY_IOS_12_1_DEP_9_3_ARM64_BITCODE_CMAKE_ 1)
+endif()
+
+include("${CMAKE_CURRENT_LIST_DIR}/utilities/polly_clear_environment_variables.cmake")
+
+include("${CMAKE_CURRENT_LIST_DIR}/utilities/polly_init.cmake")
+
+set(IOS_SDK_VERSION 12.1)
+set(IOS_DEPLOYMENT_SDK_VERSION 9.3)
+
+set(POLLY_XCODE_COMPILER "clang")
+polly_init(
+    "iOS ${IOS_SDK_VERSION} / Deployment ${IOS_DEPLOYMENT_SDK_VERSION} / arm64 / \
+${POLLY_XCODE_COMPILER} / \
+bitcode / \
+c++14 support"
+    "Xcode"
+)
+
+include("${CMAKE_CURRENT_LIST_DIR}/utilities/polly_common.cmake")
+
+include(polly_fatal_error)
+
+# Fix try_compile
+include(polly_ios_bundle_identifier)
+
+set(CMAKE_MACOSX_BUNDLE YES)
+set(CMAKE_XCODE_ATTRIBUTE_CODE_SIGN_IDENTITY "iPhone Developer")
+
+set(IPHONEOS_ARCHS arm64)
+set(IPHONESIMULATOR_ARCHS "")
+
+include("${CMAKE_CURRENT_LIST_DIR}/compiler/xcode.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/os/iphone.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/flags/cxx14.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/flags/bitcode.cmake") # after os/iphone.cmake
+
+include("${CMAKE_CURRENT_LIST_DIR}/utilities/polly_ios_development_team.cmake")
diff --git a/ios-12-3-dep-9-3-arm64.cmake b/ios-12-3-dep-9-3-arm64.cmake
new file mode 100644
index 00000000..b2af85c1
--- /dev/null
+++ b/ios-12-3-dep-9-3-arm64.cmake
@@ -0,0 +1,42 @@
+# Copyright (c) 2017-2018, Ruslan Baratov
+# All rights reserved.
+
+if(DEFINED POLLY_IOS_12_3_DEP_9_3_ARM64_CMAKE_)
+  return()
+else()
+  set(POLLY_IOS_12_3_DEP_9_3_ARM64_CMAKE_ 1)
+endif()
+
+include("${CMAKE_CURRENT_LIST_DIR}/utilities/polly_clear_environment_variables.cmake")
+
+include("${CMAKE_CURRENT_LIST_DIR}/utilities/polly_init.cmake")
+
+set(IOS_SDK_VERSION 12.3)
+set(IOS_DEPLOYMENT_SDK_VERSION 9.3)
+
+set(POLLY_XCODE_COMPILER "clang")
+polly_init(
+    "iOS ${IOS_SDK_VERSION} / Deployment ${IOS_DEPLOYMENT_SDK_VERSION} / arm64 / \
+${POLLY_XCODE_COMPILER} / \
+c++14 support"
+    "Xcode"
+)
+
+include("${CMAKE_CURRENT_LIST_DIR}/utilities/polly_common.cmake")
+
+include(polly_fatal_error)
+
+# Fix try_compile
+include(polly_ios_bundle_identifier)
+
+set(CMAKE_MACOSX_BUNDLE YES)
+set(CMAKE_XCODE_ATTRIBUTE_CODE_SIGN_IDENTITY "iPhone Developer")
+
+set(IPHONEOS_ARCHS arm64)
+set(IPHONESIMULATOR_ARCHS "")
+
+include("${CMAKE_CURRENT_LIST_DIR}/compiler/xcode.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/os/iphone.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/flags/cxx14.cmake")
+
+include("${CMAKE_CURRENT_LIST_DIR}/utilities/polly_ios_development_team.cmake")
diff --git a/osx-10-15-dep-10-10-cxx14.cmake b/osx-10-15-dep-10-10-cxx14.cmake
new file mode 100644
index 00000000..0ecb4dde
--- /dev/null
+++ b/osx-10-15-dep-10-10-cxx14.cmake
@@ -0,0 +1,29 @@
+# Copyright (c) 2016, Ruslan Baratov
+# All rights reserved.
+
+if(DEFINED POLLY_OSX_10_15_DEP_10_10_CXX14_CMAKE_)
+  return()
+else()
+  set(POLLY_OSX_10_15_DEP_10_10_CXX14_CMAKE_ 1)
+endif()
+
+include("${CMAKE_CURRENT_LIST_DIR}/utilities/polly_init.cmake")
+
+set(OSX_SDK_VERSION "10.15")
+set(POLLY_XCODE_COMPILER "clang")
+polly_init(
+    "Xcode (OS X ${OSX_SDK_VERSION} | Deployment 10.10) / \
+${POLLY_XCODE_COMPILER} / \
+LLVM Standard C++ Library (libc++) / c++14 support"
+    "Xcode"
+)
+
+include("${CMAKE_CURRENT_LIST_DIR}/utilities/polly_common.cmake")
+
+include("${CMAKE_CURRENT_LIST_DIR}/compiler/xcode.cmake")
+
+set(CMAKE_OSX_DEPLOYMENT_TARGET "10.10" CACHE STRING "OS X Deployment target" FORCE)
+
+include("${CMAKE_CURRENT_LIST_DIR}/library/std/libcxx.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/flags/cxx14.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/os/osx.cmake")
diff --git a/osx-10-15-dep-10-10-cxx17.cmake b/osx-10-15-dep-10-10-cxx17.cmake
new file mode 100644
index 00000000..439ea66c
--- /dev/null
+++ b/osx-10-15-dep-10-10-cxx17.cmake
@@ -0,0 +1,29 @@
+# Copyright (c) 2016, Ruslan Baratov
+# All rights reserved.
+
+if(DEFINED POLLY_OSX_10_15_DEP_10_10_CXX17_CMAKE_)
+  return()
+else()
+  set(POLLY_OSX_10_15_DEP_10_10_CXX17_CMAKE_ 1)
+endif()
+
+include("${CMAKE_CURRENT_LIST_DIR}/utilities/polly_init.cmake")
+
+set(OSX_SDK_VERSION "10.15")
+set(POLLY_XCODE_COMPILER "clang")
+polly_init(
+    "Xcode (OS X ${OSX_SDK_VERSION} | Deployment 10.10) / \
+${POLLY_XCODE_COMPILER} / \
+LLVM Standard C++ Library (libc++) / c++17 support"
+    "Xcode"
+)
+
+include("${CMAKE_CURRENT_LIST_DIR}/utilities/polly_common.cmake")
+
+include("${CMAKE_CURRENT_LIST_DIR}/compiler/xcode.cmake")
+
+set(CMAKE_OSX_DEPLOYMENT_TARGET "10.10" CACHE STRING "OS X Deployment target" FORCE)
+
+include("${CMAKE_CURRENT_LIST_DIR}/library/std/libcxx.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/flags/cxx17.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/os/osx.cmake")
diff --git a/osx-10-15-dep-10-10.cmake b/osx-10-15-dep-10-10.cmake
new file mode 100644
index 00000000..1c134c0e
--- /dev/null
+++ b/osx-10-15-dep-10-10.cmake
@@ -0,0 +1,29 @@
+# Copyright (c) 2016, Ruslan Baratov
+# All rights reserved.
+
+if(DEFINED POLLY_OSX_10_15_DEP_10_10_CMAKE_)
+  return()
+else()
+  set(POLLY_OSX_10_15_DEP_10_10_CMAKE_ 1)
+endif()
+
+include("${CMAKE_CURRENT_LIST_DIR}/utilities/polly_init.cmake")
+
+set(OSX_SDK_VERSION "10.15")
+set(POLLY_XCODE_COMPILER "clang")
+polly_init(
+    "Xcode (OS X ${OSX_SDK_VERSION} | Deployment 10.10) / \
+${POLLY_XCODE_COMPILER} / \
+LLVM Standard C++ Library (libc++) / c++11 support"
+    "Xcode"
+)
+
+include("${CMAKE_CURRENT_LIST_DIR}/utilities/polly_common.cmake")
+
+include("${CMAKE_CURRENT_LIST_DIR}/compiler/xcode.cmake")
+
+set(CMAKE_OSX_DEPLOYMENT_TARGET "10.10" CACHE STRING "OS X Deployment target" FORCE)
+
+include("${CMAKE_CURRENT_LIST_DIR}/library/std/libcxx.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/flags/cxx11.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/os/osx.cmake")
diff --git a/osx-10-15-dep-10-12-cxx17.cmake b/osx-10-15-dep-10-12-cxx17.cmake
new file mode 100644
index 00000000..6f24f581
--- /dev/null
+++ b/osx-10-15-dep-10-12-cxx17.cmake
@@ -0,0 +1,29 @@
+# Copyright (c) 2016, Ruslan Baratov
+# All rights reserved.
+
+if(DEFINED POLLY_OSX_10_15_DEP_10_12_CXX17_CMAKE_)
+  return()
+else()
+  set(POLLY_OSX_10_15_DEP_10_12_CXX17_CMAKE_ 1)
+endif()
+
+include("${CMAKE_CURRENT_LIST_DIR}/utilities/polly_init.cmake")
+
+set(OSX_SDK_VERSION "10.15")
+set(POLLY_XCODE_COMPILER "clang")
+polly_init(
+    "Xcode (OS X ${OSX_SDK_VERSION} | Deployment 10.12) / \
+${POLLY_XCODE_COMPILER} / \
+LLVM Standard C++ Library (libc++) / c++17 support"
+    "Xcode"
+)
+
+include("${CMAKE_CURRENT_LIST_DIR}/utilities/polly_common.cmake")
+
+include("${CMAKE_CURRENT_LIST_DIR}/compiler/xcode.cmake")
+
+set(CMAKE_OSX_DEPLOYMENT_TARGET "10.12" CACHE STRING "OS X Deployment target" FORCE)
+
+include("${CMAKE_CURRENT_LIST_DIR}/library/std/libcxx.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/flags/cxx17.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/os/osx.cmake")
diff --git a/osx-10-15.cmake b/osx-10-15.cmake
new file mode 100644
index 00000000..2961b591
--- /dev/null
+++ b/osx-10-15.cmake
@@ -0,0 +1,29 @@
+# Copyright (c) 2018, Ruslan Baratov
+# All rights reserved.
+
+if(DEFINED POLLY_OSX_10_15_CMAKE_)
+  return()
+else()
+  set(POLLY_OSX_10_15_CMAKE_ 1)
+endif()
+
+include("${CMAKE_CURRENT_LIST_DIR}/utilities/polly_init.cmake")
+
+set(OSX_SDK_VERSION "10.15")
+set(POLLY_XCODE_COMPILER "clang")
+polly_init(
+    "Xcode (OS X ${OSX_SDK_VERSION}) / \
+${POLLY_XCODE_COMPILER} / \
+LLVM Standard C++ Library (libc++) / c++11 support"
+    "Xcode"
+)
+
+include("${CMAKE_CURRENT_LIST_DIR}/utilities/polly_common.cmake")
+
+include("${CMAKE_CURRENT_LIST_DIR}/compiler/xcode.cmake")
+
+set(CMAKE_OSX_DEPLOYMENT_TARGET "10.15" CACHE STRING "OS X Deployment target" FORCE)
+
+include("${CMAKE_CURRENT_LIST_DIR}/library/std/libcxx.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/flags/cxx11.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/os/osx.cmake")