makefiles: Allow use of Objective-C source files in modules.

Make.rules.in

@@ -2,6 +2,7 @@
 #
 # Each individual makefile may define the following variables:
 # C_SRCS       : C sources for the module
+# OBJC_SRCS    : Objective-C sources for the module
 # RC_SRCS      : resource source files
 # EXTRA_SRCS   : extra source files for make depend
 # EXTRA_OBJS   : extra object files
@@ -29,7 +30,7 @@ CLEAN_TARGETS = $(IDL_GEN_C_SRCS) $(IDL_GEN_HEADERS) $(IDL_TLB_SRCS:.idl=.tlb) $
                 $(BISON_SRCS:.y=.tab.c) $(BISON_SRCS:.y=.tab.h) $(LEX_SRCS:.l=.yy.c) \
                 $(PO_SRCS:%=rsrc.pot) $(MC_SRCS:%=msg.pot) $(XTEMPLATE_SRCS:.x=.h)
 
-OBJS = $(C_SRCS:.c=.o) $(BISON_SRCS:.y=.tab.o) $(LEX_SRCS:.l=.yy.o) $(IDL_GEN_C_SRCS:.c=.o) \
+OBJS = $(C_SRCS:.c=.o) $(BISON_SRCS:.y=.tab.o) $(LEX_SRCS:.l=.yy.o) $(IDL_GEN_C_SRCS:.c=.o) $(OBJC_SRCS:.m=.o) \
        $(IDL_R_SRCS:.idl=_r.res) $(IDL_TLB_RES) $(RC_SRCS:.rc=.res) $(MC_SRCS:.mc=.res) $(EXTRA_OBJS)
 
 CROSSOBJS = $(OBJS:.o=.cross.o)
@@ -47,6 +48,9 @@ filter: dummy
 .c.o:
 	$(CC) -c $(ALLCFLAGS) -o $@ $<
 
+.m.o:
+	$(CC) -c $(ALLCFLAGS) -o $@ $<
+
 .c.cross.o:
 	$(CROSSCC) -c $(INCLUDES) $(DEFS) -DWINE_CROSSTEST $(CPPFLAGS) $(CFLAGS) -o $@ $<
 
@@ -137,7 +141,7 @@ winapi_check:: dummy
 
 # Rules for dependencies
 
-DEPEND_SRCS = $(C_SRCS) $(RC_SRCS) $(MC_SRCS) \
+DEPEND_SRCS = $(C_SRCS) $(OBJC_SRCS) $(RC_SRCS) $(MC_SRCS) \
               $(IDL_H_SRCS) $(IDL_C_SRCS) $(IDL_I_SRCS) $(IDL_P_SRCS) $(IDL_S_SRCS) \
               $(IDL_GEN_C_SRCS) $(IDL_R_SRCS:.idl=_r.res) $(IDL_TLB_SRCS) $(IDL_TLB_SRCS:.idl=.tlb) \
               $(BISON_SRCS) $(LEX_SRCS) $(EXTRA_SRCS)