Imported Upstream version 5.18.0.142

Former-commit-id: 7467d4b717762eeaf652d77f1486dd11ffb1ff1f

mcs/build/platforms/macos.make

@@ -34,3 +34,5 @@ platform-check:
 #	    echo "*** You need to build MCS with GNU make. Try \`gmake'" ; \
 #	    exit 1 ; \
 #	fi
+
+PLATFORM_MACOS=1

mcs/build/platforms/unix.make

@@ -0,0 +1,36 @@
+# -*- makefile -*-
+#
+# Platform-specific makefile rules. This one's for any unix (FreeBSD, OpenBSD, etc.)
+#
+
+PLATFORM_MCS_FLAGS =
+PLATFORM_RUNTIME = $(RUNTIME)
+PLATFORM_CORLIB = mscorlib.dll
+PLATFORM_TEST_HARNESS_EXCLUDES =
+
+EXTERNAL_MCS = mcs
+EXTERNAL_MBAS = mbas
+EXTERNAL_RUNTIME = mono
+#ILDISASM = monodis
+ILDISASM = false
+
+PLATFORM_PATH_SEPARATOR = :
+
+# Define this if this ever will work on Unix
+# PLATFORM_MAKE_CORLIB_CMP = yes
+
+# This is for changing / to \ on windows
+PLATFORM_CHANGE_SEPARATOR_CMD = cat
+
+hidden_prefix = .
+hidden_suffix = 
+
+platform-check:
+	@:
+# I tried this but apparently Make's version strings aren't that
+# ... consistent between releases. Whatever.
+#
+#	@if ! $(MAKE) --version |grep '^GNU Make version 3' 1>/dev/null 2>&1 ; then \
+#	    echo "*** You need to build MCS with GNU make. Try \`gmake'" ; \
+#	    exit 1 ; \
+#	fi