build/detect.mk

   1 # Make library that auto-detects the build environment.
   2
   3 UNAME_S := $(shell uname -s)
   4 UNAME_M := $(shell uname -m)
   5
   6 HOST_IS_LINUX := $(call string_equals,$(UNAME_S),Linux)
   7 HOST_IS_DARWIN := $(call string_equals,$(UNAME_S),Darwin)
   8 HOST_IS_CYGWIN := $(call string_equals,$(UNAME_S),Cygwin)
   9 HOST_IS_MINGW := $(call string_contains,$(UNAME_S),MINGW)
  10 HOST_IS_WIN32 := $(call bool_or,$(HOST_IS_CYGWIN),$(HOST_IS_MINGW))
  11 HOST_IS_UNIX := $(call bool_not,$(HOST_IS_WIN32))
  12
  13 HOST_IS_ARM := $(call string_contains,$(UNAME_M),armv)
  14 HOST_IS_ARMV6 := $(call string_equals,$(UNAME_M),armv6l)
  15 HOST_IS_ARMV7 := $(call string_equals,$(UNAME_M),armv7l)
  16
  17 ifeq ($(HOST_IS_ARMV7),y)
  18 HOST_HAS_NEON := $(call string_contains,$(shell grep -E ^Features /proc/cpuinfo),neon)
  19 else
  20 HOST_HAS_NEON := n
  21 endif
  22
  23 ifeq ($(HOST_IS_LINUX)$(HOST_IS_ARMV6),yy)
  24 # Check for VideoCore headers present on a Raspberry Pi
  25 HOST_IS_PI := $(call string_equals,$(shell test -f /opt/vc/include/interface/vmcs_host/vc_dispmanx.h && echo y),y)
  26 else
  27 HOST_IS_PI := n
  28 endif