#------------------------------------------------------------------------
#
# Get the Subversion revision number of Mp (if available).
#

# We strip out any embedded spaces to make the ifeq test below easier.

_mp_subversion_revision := $(shell svnversion .. 2>/dev/null | tr -d ' ')

$(info _mp_subversion_revision is [${_mp_subversion_revision}])

# Create a label for the current version.

ifndef _mp_subversion_revision
  _mp_subversion_label := unknown
  _mp_subversion_revnumber := 0
else
  ifeq ($(_mp_subversion_revision),Unversioneddirectory)
    _mp_subversion_label := none
    _mp_subversion_revnumber := 0
  else
    _mp_subversion_label := SVN $(_mp_subversion_revision)

    _mp_os_name := $(shell ../../mx/tools/mx_config os_name)

    ifeq ($(_mp_os_name),solaris)
      _mp_subversion_revnumber := $(shell echo $(_mp_subversion_revision) | sed 's/M//g' )
    else ifeq ($(_mp_os_name),bsd)
      _mp_subversion_revnumber := $(shell echo $(_mp_subversion_revision) | sed 's/M//g' )
    else
      _mp_subversion_revnumber := $(shell echo $(_mp_subversion_revision) | grep -o '[0-9]\+' )
    endif
  endif
endif

# Read in the label for the old version.

_mp_subversion_old_label := $(shell cat mp_revision.txt 2>/dev/null)

# Compare the labels and overwrite the old one if they do not match

$(info Old = $(_mp_subversion_old_label))
$(info New = $(_mp_subversion_label))

$(info _mp_subversion_revnumber is [${_mp_subversion_revnumber}])

ifneq ($(_mp_subversion_label),$(_mp_subversion_old_label))
$(shell echo $(_mp_subversion_label) > mp_revision.txt)
$(shell echo \#define MP_REVISION_STRING \"$(_mp_subversion_label)\" > mp_private_revision.h)
#
$(shell echo \#define MP_REVISION_NUMBER $(_mp_subversion_revnumber) >> mp_private_revision.h)

endif

#------------------------------------------------------------------------