build: set OSX_MIN_VERSION to 10.15

This is required to use std::filesystem on macOS as support for it only
landed in the libc++ dylib shipped with 10.15.

See also: https://developer.apple.com/documentation/xcode-release-notes/xcode-11-release-notes

Clang now supports the C++17 <filesystem> library for iOS 13, macOS 10.15, watchOS 6, and tvOS 13.

.cirrus.yml

@@ -254,7 +254,7 @@ task:
     FILE_ENV: "./ci/test/00_setup_env_native_nowallet.sh"
 
 task:
-  name: 'macOS 10.14 [gui, no tests] [focal]'
+  name: 'macOS 10.15 [gui, no tests] [focal]'
   << : *DEPENDS_SDK_CACHE_TEMPLATE
   << : *GLOBAL_TASK_TEMPLATE
   container:

ci/test/00_setup_env_mac.sh

@@ -8,7 +8,7 @@ export LC_ALL=C.UTF-8
 
 export CONTAINER_NAME=ci_macos_cross
 export DOCKER_NAME_TAG=ubuntu:20.04  # Check that Focal can cross-compile to macos
-export HOST=x86_64-apple-darwin18
+export HOST=x86_64-apple-darwin19
 export PACKAGES="cmake imagemagick librsvg2-bin libz-dev libtiff-tools libtinfo5 python3-setuptools xorriso"
 export XCODE_VERSION=12.1
 export XCODE_BUILD_ID=12A7403

ci/test/00_setup_env_mac_host.sh

@@ -6,7 +6,7 @@
 
 export LC_ALL=C.UTF-8
 
-export HOST=x86_64-apple-darwin18
+export HOST=x86_64-apple-darwin19
 export PIP_PACKAGES="zmq lief"
 export GOAL="install"
 export BITCOIN_CONFIG="--with-gui --enable-reduce-exports"

contrib/devtools/symbol-check.py

@@ -217,7 +217,7 @@ def check_MACHO_libraries(filename) -> bool:
 
 def check_MACHO_min_os(filename) -> bool:
     binary = lief.parse(filename)
-    if binary.build_version.minos == [10,14,0]:
+    if binary.build_version.minos == [10,15,0]:
         return True
     return False
 

contrib/devtools/test-symbol-check.py

@@ -137,7 +137,7 @@ class TestSymbolChecks(unittest.TestCase):
                 }
         ''')
 
-        self.assertEqual(call_symbol_check(cc, source, executable, ['-Wl,-platform_version','-Wl,macos', '-Wl,10.14', '-Wl,11.4']),
+        self.assertEqual(call_symbol_check(cc, source, executable, ['-Wl,-platform_version','-Wl,macos', '-Wl,10.15', '-Wl,11.4']),
                 (1, f'{executable}: failed SDK'))
 
     def test_PE(self):

contrib/guix/README.md

@@ -75,7 +75,7 @@ crucial differences:
 
 1. Since only Windows and macOS build outputs require codesigning, the `HOSTS`
    environment variable will have a sane default value of `x86_64-w64-mingw32
-   x86_64-apple-darwin18` instead of all the platforms.
+   x86_64-apple-darwin19` instead of all the platforms.
 2. The `guix-codesign` command ***requires*** a `DETACHED_SIGS_REPO` flag.
     * _**DETACHED_SIGS_REPO**_
 
@@ -159,7 +159,7 @@ which case you can override the default list by setting the space-separated
 `HOSTS` environment variable:
 
 ```sh
-env HOSTS='x86_64-w64-mingw32 x86_64-apple-darwin18' ./contrib/guix/guix-build
+env HOSTS='x86_64-w64-mingw32 x86_64-apple-darwin19' ./contrib/guix/guix-build
 ```
 
 See the [recognized environment variables][env-vars-list] section for more
@@ -224,7 +224,7 @@ details.
 
   _(defaults to "x86\_64-linux-gnu arm-linux-gnueabihf aarch64-linux-gnu
   riscv64-linux-gnu powerpc64-linux-gnu powerpc64le-linux-gnu
-  x86\_64-w64-mingw32 x86\_64-apple-darwin18")_
+  x86\_64-w64-mingw32 x86\_64-apple-darwin19")_
 
 * _**SOURCES_PATH**_
 

contrib/guix/guix-build

@@ -76,7 +76,7 @@ mkdir -p "$VERSION_BASE"
 # Default to building for all supported HOSTs (overridable by environment)
 export HOSTS="${HOSTS:-x86_64-linux-gnu arm-linux-gnueabihf aarch64-linux-gnu riscv64-linux-gnu powerpc64-linux-gnu powerpc64le-linux-gnu
                        x86_64-w64-mingw32
-                       x86_64-apple-darwin18}"
+                       x86_64-apple-darwin19}"
 
 # Usage: distsrc_for_host HOST
 #

contrib/guix/guix-codesign

@@ -91,7 +91,7 @@ fi
 ################
 
 # Default to building for all supported HOSTs (overridable by environment)
-export HOSTS="${HOSTS:-x86_64-w64-mingw32 x86_64-apple-darwin18}"
+export HOSTS="${HOSTS:-x86_64-w64-mingw32 x86_64-apple-darwin19}"
 
 # Usage: distsrc_for_host HOST
 #

contrib/guix/libexec/build.sh

@@ -147,7 +147,7 @@ case "$HOST" in
         #
         # After the native packages in depends are built, the ld wrapper should
         # no longer affect our build, as clang would instead reach for
-        # x86_64-apple-darwin18-ld from cctools
+        # x86_64-apple-darwin19-ld from cctools
         ;;
     *) export GUIX_LD_WRAPPER_DISABLE_RPATH=yes ;;
 esac
@@ -423,8 +423,8 @@ mkdir -p "$DISTSRC"
                 find "${DISTNAME}" -print0 \
                     | sort --zero-terminated \
                     | tar --create --no-recursion --mode='u+rw,go+r-w,a+X' --null --files-from=- \
-                    | gzip -9n > "${OUTDIR}/${DISTNAME}-${HOST//x86_64-apple-darwin18/osx64}.tar.gz" \
+                    | gzip -9n > "${OUTDIR}/${DISTNAME}-${HOST//x86_64-apple-darwin19/osx64}.tar.gz" \
-                    || ( rm -f "${OUTDIR}/${DISTNAME}-${HOST//x86_64-apple-darwin18/osx64}.tar.gz" && exit 1 )
+                    || ( rm -f "${OUTDIR}/${DISTNAME}-${HOST//x86_64-apple-darwin19/osx64}.tar.gz" && exit 1 )
                 ;;
         esac
     )  # $DISTSRC/installed

depends/README.md

@@ -28,7 +28,7 @@ Common `host-platform-triplet`s for cross compilation are:
 - `i686-pc-linux-gnu` for Linux 32 bit
 - `x86_64-pc-linux-gnu` for x86 Linux
 - `x86_64-w64-mingw32` for Win64
-- `x86_64-apple-darwin18` for macOS
+- `x86_64-apple-darwin19` for macOS
 - `arm-linux-gnueabihf` for Linux ARM 32 bit
 - `aarch64-linux-gnu` for Linux ARM 64 bit
 - `powerpc64-linux-gnu` for Linux POWER 64-bit (big endian)

depends/hosts/darwin.mk

@@ -1,4 +1,4 @@
-OSX_MIN_VERSION=10.14
+OSX_MIN_VERSION=10.15
 OSX_SDK_VERSION=10.15.6
 XCODE_VERSION=12.1
 XCODE_BUILD_ID=12A7403

doc/release-notes.md

@@ -46,7 +46,7 @@ Compatibility
 ==============
 
 Bitcoin Core is supported and extensively tested on operating systems
-using the Linux kernel, macOS 10.14+, and Windows 7 and newer.  Bitcoin
+using the Linux kernel, macOS 10.15+, and Windows 7 and newer.  Bitcoin
 Core should also work on most other Unix-like systems but is not as
 frequently tested on them.  It is not recommended to use Bitcoin Core on
 unsupported systems.

share/qt/Info.plist.in

@@ -3,7 +3,7 @@
 <plist version="0.9">
 <dict>
   <key>LSMinimumSystemVersion</key>
-  <string>10.14.0</string>
+  <string>10.15.0</string>
 
   <key>LSArchitecturePriority</key>
   <array>