nx-X11/config/{imake,makedepend}: Use system-wide available imake and makedepend tools.

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-.\" $Xorg: mkdepend.man,v 1.5 2001/02/09 02:03:16 xorgcvs Exp $
-.\" Copyright (c) 1993, 1994, 1998 The Open Group
-.\" 
-.\" Permission to use, copy, modify, distribute, and sell this software and its
-.\" documentation for any purpose is hereby granted without fee, provided that
-.\" the above copyright notice appear in all copies and that both that
-.\" copyright notice and this permission notice appear in supporting
-.\" documentation.
-.\" 
-.\" The above copyright notice and this permission notice shall be included in
-.\" all copies or substantial portions of the Software.
-.\" 
-.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-.\" IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-.\" FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL 
-.\" THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 
-.\" WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF 
-.\" OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 
-.\" SOFTWARE.
-.\" 
-.\" Except as contained in this notice, the name of The Open Group shall not 
-.\" be used in advertising or otherwise to promote the sale, use or other 
-.\" dealing in this Software without prior written authorization from The
-.\" Open Group.
-.\"
-.\" $XFree86: xc/config/makedepend/mkdepend.man,v 1.6 2001/12/17 20:52:22 dawes Exp $
-.\"
-.TH MAKEDEPEND 1 __xorgversion__
-.UC 4
-.SH NAME
-makedepend \- create dependencies in makefiles
-.SH SYNOPSIS
-.B makedepend
-[
-.BI \-D name\fB=\fPdef
-] [
-.BI \-D name
-] [
-.BI \-I includedir
-] [
-.BI \-Y includedir
-] [
-.B \-a
-] [
-.BI \-f makefile
-] [
-.BI \-include \ file
-] [
-.BI \-o objsuffix
-] [
-.BI \-p objprefix
-] [
-.BI \-s string
-] [
-.BI \-w width
-] [
-.B \-v
-] [
-.B \-m
-] [
-\-\^\-
-.I otheroptions
-\-\^\-
-]
-.I sourcefile
-\&.\|.\|.
-.br
-.SH DESCRIPTION
-The
-.B makedepend
-program reads each
-.I sourcefile
-in sequence and parses it like a C-preprocessor,
-processing all
-.I #include,
-.I #define,
-.I #undef,
-.I #ifdef,
-.I #ifndef,
-.I #endif,
-.I #if,
-.I #elif
-and
-.I #else
-directives so that it can correctly tell which
-.I #include,
-directives would be used in a compilation.
-Any
-.I #include,
-directives can reference files having other
-.I #include
-directives, and parsing will occur in these files as well.
-.PP
-Every file that a
-.I sourcefile
-includes,
-directly or indirectly,
-is what
-.B makedepend
-calls a \fIdependency.\fP
-These dependencies are then written to a
-.I makefile
-in such a way that
-.B make(1)
-will know which object files must be recompiled when a dependency has changed.
-.PP
-By default,
-.B makedepend
-places its output in the file named
-.I makefile
-if it exists, otherwise
-.I Makefile.
-An alternate makefile may be specified with the
-.B \-f
-option.
-It first searches the makefile for
-the line
-.sp
-\&    # DO NOT DELETE THIS LINE \-\^\- make depend depends on it.
-.sp
-or one provided with the
-.B \-s
-option,
-as a delimiter for the dependency output.
-If it finds it, it will delete everything
-following this to the end of the makefile
-and put the output after this line.
-If it doesn't find it, the program
-will append the string to the end of the makefile
-and place the output following that.
-For each
-.I sourcefile
-appearing on the command line,
-.B makedepend
-puts lines in the makefile of the form
-.sp
-     sourcefile.o:\0dfile .\|.\|.
-.sp
-Where \fIsourcefile.o\fP is the name from the command
-line with its suffix replaced with ``.o'',
-and \fIdfile\fP is a dependency discovered in a
-.I #include
-directive while parsing
-.I sourcefile
-or one of the files it included.
-.SH EXAMPLE
-Normally,
-.B makedepend
-will be used in a makefile target so that typing ``make depend'' will
-bring the dependencies up to date for the makefile.
-For example,
-.nf
-    SRCS\0=\0file1.c\0file2.c\0.\|.\|.
-    CFLAGS\0=\0\-O\0\-DHACK\0\-I\^.\^.\^/foobar\0\-xyz
-    depend:
-            makedepend\0\-\^\-\0$(CFLAGS)\0\-\^\-\0$(SRCS)
-.fi
-.SH OPTIONS
-The program
-will ignore any option that it does not understand so that you may use
-the same arguments that you would for
-.B cc(1).
-.TP 5
-.B \-D\fIname\fP=\fIdef\fP \fRor\fP \-D\fIname\fP
-Define.
-This places a definition for
-.I name
-in
-.B makedepend's
-symbol table.
-Without 
-.I =def\|
-the symbol becomes defined as ``1''.
-.TP 5
-.B \-I\fIincludedir\fP
-Include directory.
-This option tells
-.B makedepend
-to prepend
-.I includedir
-to its list of directories to search when it encounters
-a
-.I #include
-directive.
-By default,
-.B makedepend
-only searches the standard include directories (usually /usr/include
-and possibly a compiler-dependent directory).
-.TP 5
-.B \-Y\fIincludedir\fP
-Replace all of the standard include directories with the single specified
-include directory; you can omit the
-.I includedir
-to simply prevent searching the standard include directories.
-.TP 5
-.B \-a
-Append the dependencies to the end of the file instead of replacing them. 
-.TP 5
-.B \-f\fImakefile\fP
-Filename.
-This allows you to specify an alternate makefile in which
-.B makedepend
-can place its output.
-Specifying ``\-'' as the file name (i.e., \fB\-f\-\fP) sends the
-output to standard output instead of modifying an existing file.
-.TP 5
-.B \-include \fIfile\fP
-Process file as input, and include all the resulting output
-before processing the regular input file. This has the same
-affect as if the specified file is an include statement that
-appears before the very first line of the regular input file.
-.TP 5
-.B \-o\fIobjsuffix\fP
-Object file suffix.
-Some systems may have object files whose suffix is something other
-than ``.o''.
-This option allows you to specify another suffix, such as
-``.b'' with
-.I \-o.b
-or ``:obj''
-with
-.I \-o:obj
-and so forth.
-.TP 5
-.B \-p\fIobjprefix\fP
-Object file prefix.
-The prefix is prepended to the name of the object file. This is
-usually used to designate a different directory for the object file.
-The default is the empty string.
-.TP 5
-.B \-s\fIstring\fP
-Starting string delimiter.
-This option permits you to specify
-a different string for
-.B makedepend
-to look for in the makefile.
-.TP 5
-.B \-w\fIwidth\fP
-Line width.
-Normally,
-.B makedepend
-will ensure that every output line that it writes will be no wider than
-78 characters for the sake of readability.
-This option enables you to change this width.
-.TP 5
-.B \-v
-Verbose operation.
-This option causes 
-.B makedepend
-to emit the list of files included by each input file.
-.TP 5
-.B \-m
-Warn about multiple inclusion.
-This option causes 
-.B makedepend
-to produce a warning if any input file includes another file more than
-once.  In previous versions of 
-.B makedepend
-this was the default behavior; the default has been changed to better
-match the behavior of the C compiler, which does not consider multiple
-inclusion to be an error.  This option is provided for backward 
-compatibility, and to aid in debugging problems related to multiple
-inclusion.
-.TP 5
-.B "\-\^\- \fIoptions\fP \-\^\-"
-If
-.B makedepend
-encounters a double hyphen (\-\^\-) in the argument list,
-then any unrecognized argument following it
-will be silently ignored; a second double hyphen terminates this
-special treatment.
-In this way,
-.B makedepend
-can be made to safely ignore esoteric compiler arguments that might
-normally be found in a CFLAGS
-.B make
-macro (see the
-.B EXAMPLE
-section above).
-All options that
-.B makedepend
-recognizes and appear between the pair of double hyphens
-are processed normally.
-.SH ALGORITHM
-The approach used in this program enables it to run an order of magnitude
-faster than any other ``dependency generator'' I have ever seen.
-Central to this performance are two assumptions:
-that all files compiled by a single
-makefile will be compiled with roughly the same
-.I \-I
-and
-.I \-D
-options;
-and that most files in a single directory will include largely the
-same files.
-.PP
-Given these assumptions,
-.B makedepend
-expects to be called once for each makefile, with
-all source files that are maintained by the
-makefile appearing on the command line.
-It parses each source and include
-file exactly once, maintaining an internal symbol table
-for each.
-Thus, the first file on the command line will take an amount of time
-proportional to the amount of time that a normal C preprocessor takes.
-But on subsequent files, if it encounters an include file
-that it has already parsed, it does not parse it again.
-.PP
-For example,
-imagine you are compiling two files,
-.I file1.c
-and
-.I file2.c,
-they each include the header file
-.I header.h,
-and the file
-.I header.h
-in turn includes the files
-.I def1.h
-and
-.I def2.h.
-When you run the command
-.sp
-    makedepend\0file1.c\0file2.c
-.sp
-.B makedepend
-will parse
-.I file1.c
-and consequently,
-.I header.h
-and then
-.I def1.h
-and
-.I def2.h.
-It then decides that the dependencies for this file are
-.sp
-    file1.o:\0header.h\0def1.h\0def2.h
-.sp
-But when the program parses
-.I file2.c
-and discovers that it, too, includes
-.I header.h,
-it does not parse the file,
-but simply adds
-.I header.h,
-.I def1.h
-and
-.I def2.h
-to the list of dependencies for
-.I file2.o.
-.SH "SEE ALSO"
-cc(1), make(1)
-.SH BUGS
-.B makedepend
-parses, but does not currently evaluate, the SVR4 #predicate(token-list)
-preprocessor expression; such expressions are simply assumed to be true.
-This may cause the wrong
-.I #include
-directives to be evaluated.
-.PP
-Imagine you are parsing two files,
-say
-.I file1.c
-and
-.I file2.c,
-each includes the file
-.I def.h.
-The list of files that
-.I def.h
-includes might truly be different when
-.I def.h
-is included by
-.I file1.c
-than when it is included by
-.I file2.c.
-But once
-.B makedepend
-arrives at a list of dependencies for a file,
-it is cast in concrete.
-.SH AUTHOR
-Todd Brunhoff, Tektronix, Inc. and MIT Project Athena