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

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

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

# Create a label for the current version.

ifndef _mx_subversion_revision
  _mx_subversion_label := unknown
  _mx_subversion_revnumber := 0
else
  ifeq ($(_mx_subversion_revision),Unversioneddirectory)
    _mx_subversion_label := none
    _mx_subversion_revnumber := 0
  else
    _mx_subversion_label := SVN $(_mx_subversion_revision)
    _mx_subversion_revnumber := $(shell echo $(_mx_subversion_revision) | grep -o '[0-9]\+' )
  endif
endif

# Read in the label for the old version.

_mx_subversion_old_label := $(shell cat mx_revision.txt 2>/dev/null)

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

$(info Old = $(_mx_subversion_old_label))
$(info New = $(_mx_subversion_label))

ifneq ($(_mx_subversion_label),$(_mx_subversion_old_label))
$(shell echo $(_mx_subversion_label) > mx_revision.txt)
$(shell echo \#define MX_REVISION_STRING \"$(_mx_subversion_label)\" > ../libMx/mx_private_revision.h)
#
$(shell echo \#define MX_REVISION_NUMBER $(_mx_subversion_revnumber) >> ../libMx/mx_private_revision.h)
endif

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