Sync betaflight to Gitea

mk/system-id.mk

@@ -0,0 +1,46 @@
+# shared.mk
+#
+# environment variables common to all operating systems supported by the make system
+
+# Make sure we know a few things about the architecture
+UNAME := $(shell uname)
+ARCH := $(shell uname -m)
+ifneq (,$(filter $(ARCH), x86_64 amd64))
+  X86-64 := 1
+  X86_64 := 1
+  AMD64 := 1
+  ARCHFAMILY := x86_64
+else
+  ARCHFAMILY := $(ARCH)
+endif
+
+# configure some variables dependent upon what type of system this is
+
+# Linux
+ifeq ($(UNAME), Linux)
+  OSFAMILY := linux
+endif
+
+# Mac OSX
+ifeq ($(UNAME), Darwin)
+  OSFAMILY := macosx
+endif
+
+# Detect all Windows-based POSIX environments (MinGW, MSYS, Cygwin)
+ifneq (,$(filter MINGW% MSYS% CYGWIN%,$(UNAME)))
+  OSFAMILY := windows
+
+  # Set specific environment flags if needed
+  ifneq (,$(filter CYGWIN%,$(UNAME)))
+    CYGWIN := 1
+  else
+    MINGW := 1
+  endif
+endif
+
+# report an error if we couldn't work out what OS this is running on
+ifndef OSFAMILY
+  $(info uname reports $(UNAME))
+  $(info uname -m reports $(ARCH))
+  $(error failed to detect operating system)
+endif