add mingw meson patches

mingw-meson/0002-Default-to-sys.prefix-as-the-default-prefix.patch

@@ -0,0 +1,11 @@
+--- meson-0.54.0/mesonbuild/mesonlib.py.orig	2020-03-30 08:16:34.854854700 +0200
++++ meson-0.54.0/mesonbuild/mesonlib.py	2020-03-30 08:16:45.815838600 +0200
+@@ -736,6 +736,8 @@
+
+
+ def default_prefix() -> str:
++    if is_windows() and 'MSYSTEM' in os.environ:
++        return sys.prefix
+     return 'c:/' if is_windows() else '/usr/local'
+
+

mingw-meson/0003-Strip-the-prefix-from-all-paths-when-installing-with.patch

@@ -0,0 +1,33 @@
+Strip the prefix from all paths when installing with DESTDIR
+Otherwise we end up with <destdir>/<prefix>/<path>
+--- meson-0.47.0/mesonbuild/scripts/__init__.py
++++ meson-0.47.0/mesonbuild/scripts/__init__.py
+@@ -12,7 +12,18 @@
+ # See the License for the specific language governing permissions and
+ # limitations under the License.
+
++import os
++from ..mesonlib import is_windows
++
+ def destdir_join(d1, d2):
++    # When the installation path starts with PREFIX, strip it away
++    if d1 and is_windows() and 'MSYSTEM' in os.environ:
++        assert os.path.isabs(d2) and 'MESON_INSTALL_PREFIX' in os.environ
++        prefix = os.environ['MESON_INSTALL_PREFIX']
++        rel_to_prefix = os.path.relpath(d2, prefix)
++        if not rel_to_prefix.startswith(os.pardir + os.sep):
++            return os.path.join(d1, rel_to_prefix)
++
+     # c:\destdir + c:\prefix must produce c:\destdir\prefix
+     if len(d1) > 1 and d1[1] == ':' \
+             and len(d2) > 1 and d2[1] == ':':
+--- meson-0.47.0/mesonbuild/minstall.py.orig
++++ meson-0.47.0/mesonbuild/minstall.py
+@@ -286,6 +286,7 @@
+         with open(datafilename, 'rb') as ifile:
+             d = pickle.load(ifile)
+         d.destdir = os.environ.get('DESTDIR', '')
++        os.environ['MESON_INSTALL_PREFIX'] = d.prefix
+         d.fullprefix = destdir_join(d.destdir, d.prefix)
+
+         if d.install_umask is not None:

mingw-meson/color-term.patch

@@ -0,0 +1,11 @@
+--- meson-0.50.1/mesonbuild/mlog.py.orig	2019-03-06 21:48:10.000000000 +0100
++++ meson-0.50.1/mesonbuild/mlog.py	2019-04-17 17:46:10.229092600 +0200
+@@ -31,7 +31,7 @@
+     stdout = kernel.GetStdHandle(-11)
+     mode = DWORD()
+     if not kernel.GetConsoleMode(stdout, byref(mode)):
+-        return False
++        return os.isatty(sys.stdout.fileno())
+     # ENABLE_VIRTUAL_TERMINAL_PROCESSING == 0x4
+     # If the call to enable VT processing fails (returns 0), we fallback to
+     # original behavior

mingw-meson/install-man.patch

@@ -0,0 +1,11 @@
+--- meson-0.48.0/setup.py.orig	2018-09-22 15:22:03.000000000 +0200
++++ meson-0.48.0/setup.py	2018-09-23 13:48:10.509756600 +0200
+@@ -36,7 +36,7 @@
+             'mesonbuild.scripts',
+             'mesonbuild.wrap']
+ data_files = []
+-if sys.platform != 'win32':
++if sys.platform != 'win32' or 1:
+     # Only useful on UNIX-like systems
+     data_files = [('share/man/man1', ['man/meson.1']),
+                   ('share/polkit-1/actions', ['data/com.mesonbuild.install.policy'])]