Fix some documentation gitches.

Fix an uninitialized variable.
Add builtin rules for Objective C.
Add a new debug line that shows where the commands that are about to be run
were defined.

1 files changed, 27 insertions, 35 deletions

diff --git a/doc/make.texi b/doc/make.texi
index 4680dec..baf92af 100644
--- a/doc/make.texi
+++ b/doc/make.texi
@@ -2940,10 +2940,6 @@ makefile, then all prerequisite lists defined @emph{after} it appears
 will be expanded a second time after all makefiles have been read in.
 @xref{Secondary Expansion, ,Secondary Expansion}.
 
-The prerequisites of the special target @code{.SUFFIXES} are the list
-of suffixes to be used in checking for suffix rules.
-@xref{Suffix Rules, , Old-Fashioned Suffix Rules}.
-
 @findex .DELETE_ON_ERROR
 @item .DELETE_ON_ERROR
 @cindex removing targets on failure
@@ -8390,17 +8386,18 @@ implemented in @code{make} as suffix rules, so which ones will be
 defined depends on the @dfn{suffix list} (the list of prerequisites of
 the special target @code{.SUFFIXES}).  The default suffix list is:
 @code{.out}, @code{.a}, @code{.ln}, @code{.o}, @code{.c}, @code{.cc},
-@code{.C}, @code{.cpp}, @code{.p}, @code{.f}, @code{.F}, @code{.r}, @code{.y},
-@code{.l}, @code{.s}, @code{.S}, @code{.mod}, @code{.sym}, @code{.def},
-@code{.h}, @code{.info}, @code{.dvi}, @code{.tex}, @code{.texinfo},
-@code{.texi}, @code{.txinfo}, @code{.w}, @code{.ch} @code{.web},
-@code{.sh}, @code{.elc}, @code{.el}.  All of the implicit rules
-described below whose prerequisites have one of these suffixes are
-actually suffix rules.  If you modify the suffix list, the only
-predefined suffix rules in effect will be those named by one or two of
-the suffixes that are on the list you specify; rules whose suffixes fail
-to be on the list are disabled.  @xref{Suffix Rules, ,Old-Fashioned
-Suffix Rules}, for full details on suffix rules.
+@code{.C}, @code{.cpp}, @code{.p}, @code{.f}, @code{.F}, @code{.m},
+@code{.r}, @code{.y}, @code{.l}, @code{.ym}, @code{.lm}, @code{.s},
+@code{.S}, @code{.mod}, @code{.sym}, @code{.def}, @code{.h},
+@code{.info}, @code{.dvi}, @code{.tex}, @code{.texinfo}, @code{.texi},
+@code{.txinfo}, @code{.w}, @code{.ch} @code{.web}, @code{.sh},
+@code{.elc}, @code{.el}.  All of the implicit rules described below
+whose prerequisites have one of these suffixes are actually suffix
+rules.  If you modify the suffix list, the only predefined suffix
+rules in effect will be those named by one or two of the suffixes that
+are on the list you specify; rules whose suffixes fail to be on the
+list are disabled.  @xref{Suffix Rules, ,Old-Fashioned Suffix Rules},
+for full details on suffix rules.
 
 @table @asis
 @item Compiling C programs
@@ -8731,21 +8728,11 @@ Program for compiling assembly files; default @samp{as}.
 Program for compiling C programs; default @samp{cc}.
 @pindex cc
 
-@item CO
-@vindex CO
-Program for checking out files from RCS; default @samp{co}.
-@pindex cc
-
 @item CXX
 @vindex CXX
 Program for compiling C++ programs; default @samp{g++}.
 @pindex g++
 
-@item CO
-@vindex CO
-Program for extracting a file from RCS; default @samp{co}.
-@pindex co
-
 @item CPP
 @vindex CPP
 Program for running the C preprocessor, with results to standard output;
@@ -8757,6 +8744,21 @@ Program for compiling or preprocessing Fortran and Ratfor programs;
 default @samp{f77}.
 @pindex f77
 
+@item M2C
+@vindex M2C
+Program to use to compile Modula-2 source code; default @samp{m2c}.
+@pindex m2c
+
+@item PC
+@vindex PC
+Program for compiling Pascal programs; default @samp{pc}.
+@pindex pc
+
+@item CO
+@vindex CO
+Program for extracting a file from RCS; default @samp{co}.
+@pindex co
+
 @item GET
 @vindex GET
 Program for extracting a file from SCCS; default @samp{get}.
@@ -8777,16 +8779,6 @@ Program to use to turn Yacc grammars into source code; default @samp{yacc}.
 Program to use to run lint on source code; default @samp{lint}.
 @pindex lint
 
-@item M2C
-@vindex M2C
-Program to use to compile Modula-2 source code; default @samp{m2c}.
-@pindex m2c
-
-@item PC
-@vindex PC
-Program for compiling Pascal programs; default @samp{pc}.
-@pindex pc
-
 @item MAKEINFO
 @vindex MAKEINFO
 Program to convert a Texinfo source file into an Info file; default