[Plplot-cvs] CVS update notice (plplot)

[Rafael L. <rla...@us...>]

Update of /cvsroot/plplot/plplot
In directory sc8-pr-cvs1:/tmp/cvs-serv32440

Modified Files:
	configure.ac acinclude.m4 
Log Message:
Fixed several issues related to the *_DIR variables

* Made the treatment of the *_DIR even more systematic now.  These variables
  are really intended to AC_SUBSTitution in the Makefile.in generated from
  Automake.  As such, they are always relative, never hard paths.
  
* When it is needed to get them substituted as hard paths (like in config.h
  via AC_DEFINE_UNQUOTED, or in the examples/*/Makefile.examples), then new
  variables are defined.  In particular, this is the case of the new
  variables INCLUDE_DIR_CMD and LIB_DIR_CMD, which should be used in
  examples/*/Makefile.examples and fix the problems with the plplot_libtool
  approach.
  
* In order to help expansion of hard paths, the macro EXPAND_EXPRESSION was
  added to acinclude.m4.
  
* Support for pkg-config was added to examples/tk/Makefile.examples.in.
  Build of the examples in examples/tk with pkg-config is not working yet,
  though.  The Tcl/Tk include directories are not being included.  I will
  fix this later.