Add generic rules for building helpers with HOSTCC

Originally committed as revision 20412 to svn://svn.ffmpeg.org/ffmpeg/trunk

Makefile

@@ -13,6 +13,7 @@ PROGS_G     = $(addsuffix _g$(EXESUF), $(PROGS-yes))
 OBJS        = $(addsuffix .o,          $(PROGS-yes)) cmdutils.o
 MANPAGES    = $(addprefix doc/, $(addsuffix .1, $(PROGS-yes)))
 TOOLS       = $(addprefix tools/, $(addsuffix $(EXESUF), cws2fws pktdumper probetest qt-faststart trasher))
+HOSTPROGS   = $(addprefix tests/, audiogen videogen rotozoom tiny_psnr)
 
 BASENAMES   = ffmpeg ffplay ffserver
 ALLPROGS    = $(addsuffix   $(EXESUF), $(BASENAMES))
@@ -47,7 +48,8 @@ $(PROGS): %$(EXESUF): %_g$(EXESUF)
 	$(STRIP) $@
 
 SUBDIR_VARS := OBJS FFLIBS CLEANFILES DIRS TESTPROGS EXAMPLES SKIPHEADERS \
-               ALTIVEC-OBJS MMX-OBJS NEON-OBJS X86-OBJS YASM-OBJS-FFT YASM-OBJS
+               ALTIVEC-OBJS MMX-OBJS NEON-OBJS X86-OBJS YASM-OBJS-FFT YASM-OBJS \
+               HOSTPROGS
 
 define RESET
 $(1) :=
@@ -324,9 +326,6 @@ tests/data/asynth1.sw: tests/audiogen$(HOSTEXESUF)
 	mkdir -p tests/data
 	$(BUILD_ROOT)/$< $@
 
-tests/%$(HOSTEXESUF): tests/%.c
-	$(HOSTCC) $(HOSTCFLAGS) $(HOSTLDFLAGS) -o $@ $< $(HOSTLIBS)
-
 tests/seek_test$(EXESUF): tests/seek_test.o $(FF_DEP_LIBS)
 	$(LD) $(FF_LDFLAGS) -o $@ $< $(FF_EXTRALIBS)
 

common.mak

@@ -61,6 +61,8 @@ FFLDFLAGS   := $(addprefix -L$(BUILD_ROOT)/lib,$(ALLFFLIBS)) $(LDFLAGS)
 EXAMPLES  := $(addprefix $(SUBDIR),$(addsuffix -example$(EXESUF),$(EXAMPLES)))
 OBJS      := $(addprefix $(SUBDIR),$(OBJS))
 TESTPROGS := $(addprefix $(SUBDIR),$(addsuffix -test$(EXESUF),$(TESTPROGS)))
+HOSTOBJS  := $(addprefix $(SUBDIR),$(addsuffix .o,$(HOSTPROGS)))
+HOSTPROGS := $(addprefix $(SUBDIR),$(addsuffix $(HOSTEXESUF),$(HOSTPROGS)))
 
 DEP_LIBS := $(foreach NAME,$(FFLIBS),$(BUILD_ROOT_REL)/lib$(NAME)/$($(CONFIG_SHARED:yes=S)LIBNAME))
 
@@ -68,6 +70,12 @@ ALLHEADERS := $(subst $(SRC_DIR)/,$(SUBDIR),$(wildcard $(SRC_DIR)/*.h $(SRC_DIR)
 SKIPHEADERS = $(addprefix $(SUBDIR),$(SKIPHEADERS-))
 checkheaders: $(filter-out $(SKIPHEADERS:.h=.ho),$(ALLHEADERS:.h=.ho))
 
+$(HOSTOBJS): %.o: %.c
+	$(HOSTCC) $(HOSTCFLAGS) -c -o $@ $<
+
+$(HOSTPROGS): %$(HOSTEXESUF): %.o
+	$(HOSTCC) $(HOSTLDFLAGS) -o $@ $< $(HOSTLIBS)
+
 DEPS := $(OBJS:.o=.d)
 depend dep: $(DEPS)
 

libavcodec/Makefile

@@ -685,17 +685,16 @@ TESTPROGS = cabac dct eval fft h264 iirfilter rangecoder snow
 TESTPROGS-$(ARCH_X86) += x86/cpuid
 TESTPROGS-$(HAVE_MMX) += motion
 
+HOSTPROGS = costablegen
+
 DIRS = alpha arm bfin mlib ppc ps2 sh4 sparc x86
 
-CLEANFILES = sin_tables.c cos_tables.c costablegen$(HOSTEXESUF) *_tables.h *_tablegen$(HOSTEXESUF)
+CLEANFILES = sin_tables.c cos_tables.c *_tables.h *_tablegen$(HOSTEXESUF)
 
 include $(SUBDIR)../subdir.mak
 
 $(SUBDIR)dct-test$(EXESUF): $(SUBDIR)dctref.o
 
-$(SUBDIR)costablegen$(HOSTEXESUF): $(SUBDIR)costablegen.c
-	$(HOSTCC) $(HOSTCFLAGS) $(HOSTLDFLAGS) -o $@ $< $(HOSTLIBS)
-
 $(SUBDIR)cos_tables.c: $(SUBDIR)costablegen$(HOSTEXESUF)
 	./$< > $@
 

subdir.mak

@@ -36,7 +36,8 @@ $(SUBDIR)x86/%.o: $(SUBDIR)x86/%.asm
 
 clean::
 	rm -f $(addprefix $(SUBDIR),*-example$(EXESUF) *-test$(EXESUF) $(CLEANFILES) $(CLEANSUFFIXES) $(LIBSUFFIXES)) \
-	    $(addprefix $(SUBDIR), $(foreach suffix,$(CLEANSUFFIXES),$(addsuffix /$(suffix),$(DIRS))))
+	    $(addprefix $(SUBDIR), $(foreach suffix,$(CLEANSUFFIXES),$(addsuffix /$(suffix),$(DIRS)))) \
+	    $(HOSTOBJS) $(HOSTPROGS)
 
 distclean:: clean
 	rm -f  $(addprefix $(SUBDIR),$(DISTCLEANSUFFIXES)) \