#**************************************************************************#*#*  X11-specific rules files, used to compile the X11 graphics driver#*  when supported by the current platform#*#**************************************************************************########################################################################### Try to detect an X11 setup.## We try to detect the following directories (in that order) in the current# path:##   X11   (usually a symlink to the current release)#   X11R6#   X11R5## Additionally, we directly check the following directories:##   /usr/X11R6#   /usr/local/X11R6## If the variable X11_PATH is set (to specify unusual locations of X11), no# other directory is searched.  More than one directory must be separated# with spaces.  Example:##   make X11_PATH="/usr/openwin /usr/local/X11R6"#FT_PATH := $(subst ;, ,$(subst :, ,$(subst $(SEP),/,$(PATH))))ifndef X11_PATH  ifneq ($(findstring X11/bin,$(FT_PATH)),)    xversion := X11  else    ifneq ($(findstring X11R6/bin,$(FT_PATH)),)      xversion := X11R6    else      ifneq ($(findstring X11R5/bin,$(FT_PATH)),)        xversion := X11R5      endif    endif  endif  ifdef xversion    X11_PATH := $(filter %$(xversion)/bin,$(FT_PATH))    X11_PATH := $(X11_PATH:%/bin=%)  else    X11_PATH = $(strip $(wildcard /usr/X11R6) $(wildcard /usr/local/X11R6))  endifendif############################################################################ Update some variables to compile the X11 graphics module.  Note that# X11 is available on Unix, or on OS/2.  However, it only compiles with# gcc on the latter platform, which is why it is safe to use the flags# `-L' and `-l' in GRAPH_LINK.#ifneq ($(X11_PATH),)  X11_INCLUDE := $(subst /,$(COMPILER_SEP),$(X11_PATH:%=%/include))  X11_LIB     := $(subst /,$(COMPILER_SEP),$(X11_PATH:%=%/lib))  # The GRAPH_LINK variable is expanded each time an executable is linked  # against the graphics library.  #  ifeq ($(PLATFORM),unix)    GRAPH_LINK += $(X11_LIB:%=-R%)  endif  GRAPH_LINK += $(X11_LIB:%=-L%) -lX11  # Solaris needs a -lsocket in GRAPH_LINK.  #  UNAME := $(shell uname)  ifneq ($(findstring $(UNAME),SunOS Solaris),)    GRAPH_LINK += -lsocket  endif  # Add the X11 driver object file to the graphics library.  #  GRAPH_OBJS += $(OBJ_DIR)/grx11.$(SO)  GR_X11 := $(GRAPH)/x11  DEVICES += X11  # the rule used to compile the X11 driver  #  $(OBJ_DIR)/grx11.$(SO): $(GR_X11)/grx11.c $(GR_X11)/grx11.h	  $(CC) $(CFLAGS) $(GRAPH_INCLUDES:%=$I%) \                $I$(subst /,$(COMPILER_SEP),$(GR_X11)) \                $(X11_INCLUDE:%=$I%) \                $T$(subst /,$(COMPILER_SEP),$@ $<)endif# EOF