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, 18 insertions, 5 deletions

diff --git a/default.c b/default.c
index 2d5480d..fbe6c1e 100644
--- a/default.c
+++ b/default.c
@@ -41,11 +41,11 @@ static char default_suffixes[]
 .s .ss .i .ii .mod .sym .def .h .info .dvi .tex .texinfo .texi .txinfo \
 .w .ch .cweb .web .com .sh .elc .el";
 #elif defined(__EMX__)
-  = ".out .a .ln .o .c .cc .C .cpp .p .f .F .r .y .l .s .S \
+  = ".out .a .ln .o .c .cc .C .cpp .p .f .F .m .r .y .l .ym .yl .s .S \
 .mod .sym .def .h .info .dvi .tex .texinfo .texi .txinfo \
 .w .ch .web .sh .elc .el .obj .exe .dll .lib";
 #else
-  = ".out .a .ln .o .c .cc .C .cpp .p .f .F .r .y .l .s .S \
+  = ".out .a .ln .o .c .cc .C .cpp .p .f .F .m .r .y .l .ym .yl .s .S \
 .mod .sym .def .h .info .dvi .tex .texinfo .texi .txinfo \
 .w .ch .web .sh .elc .el";
 #endif
@@ -192,6 +192,8 @@ static char *default_suffix_rules[] =
     "$(LINK.cpp) $^ $(LOADLIBES) $(LDLIBS) -o $@",
     ".f",
     "$(LINK.f) $^ $(LOADLIBES) $(LDLIBS) -o $@",
+    ".m",
+    "$(LINK.m) $^ $(LOADLIBES) $(LDLIBS) -o $@",
     ".p",
     "$(LINK.p) $^ $(LOADLIBES) $(LDLIBS) -o $@",
     ".F",
@@ -221,6 +223,8 @@ static char *default_suffix_rules[] =
     "$(COMPILE.cpp) $(OUTPUT_OPTION) $<",
     ".f.o",
     "$(COMPILE.f) $(OUTPUT_OPTION) $<",
+    ".m.o",
+    "$(COMPILE.m) $(OUTPUT_OPTION) $<",
     ".p.o",
     "$(COMPILE.p) $(OUTPUT_OPTION) $<",
     ".F.o",
@@ -249,15 +253,18 @@ static char *default_suffix_rules[] =
 #endif
     ".l.c",
     "@$(RM) $@ \n $(LEX.l) $< > $@",
+    ".ym.m",
+    "$(YACC.m) $< \n mv -f y.tab.c $@",
+    ".lm.m",
+    "@$(RM) $@ \n $(LEX.m) $< > $@",
 
     ".F.f",
     "$(PREPROCESS.F) $(OUTPUT_OPTION) $<",
     ".r.f",
     "$(PREPROCESS.r) $(OUTPUT_OPTION) $<",
 
-    /* This might actually make lex.yy.c if there's no %R%
-       directive in $*.l, but in that case why were you
-       trying to make $*.r anyway?  */
+    /* This might actually make lex.yy.c if there's no %R% directive in $*.l,
+       but in that case why were you trying to make $*.r anyway?  */
     ".l.r",
     "$(LEX.l) $< > $@ \n mv -f lex.yy.r $@",
 
@@ -398,9 +405,11 @@ static const char *default_variables[] =
 # else
     "CXX", "gcc",
 # endif /* __MSDOS__ */
+    "OBJC", "gcc",
 #else
     "CC", "cc",
     "CXX", "g++",
+    "OBJC", "cc",
 #endif
 
     /* This expands to $(CO) $(COFLAGS) $< $@ if $@ does not exist,
@@ -468,6 +477,8 @@ static const char *default_variables[] =
     "LINK.o", "$(CC) $(LDFLAGS) $(TARGET_ARCH)",
     "COMPILE.c", "$(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c",
     "LINK.c", "$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
+    "COMPILE.m", "$(OBJC) $(OBJCFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c",
+    "LINK.m", "$(OBJC) $(OBJCFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
     "COMPILE.cc", "$(CXX) $(CXXFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c",
     "COMPILE.C", "$(COMPILE.cc)",
     "COMPILE.cpp", "$(COMPILE.cc)",
@@ -476,6 +487,8 @@ static const char *default_variables[] =
     "LINK.cpp", "$(LINK.cc)",
     "YACC.y", "$(YACC) $(YFLAGS)",
     "LEX.l", "$(LEX) $(LFLAGS) -t",
+    "YACC.m", "$(YACC) $(YFLAGS)",
+    "LEX.m", "$(LEX) $(LFLAGS) -t",
     "COMPILE.f", "$(FC) $(FFLAGS) $(TARGET_ARCH) -c",
     "LINK.f", "$(FC) $(FFLAGS) $(LDFLAGS) $(TARGET_ARCH)",
     "COMPILE.F", "$(FC) $(FFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c",