mirror of
https://github.com/FFmpeg/FFmpeg.git
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a78173374a
Currently, $(CPPFLAGS) and $(CFLAGS) are prepended to CXXFLAGS (the flags for compiling C++) like this: CXXFLAGS := $(CPPFLAGS) $(CFLAGS) $(CXXFLAGS) Using ":=" creates a simply expanded variable, i.e. the values of the variable at the time of assignment are used and later modifications to them are ignored (using a recursively expanding variable (i.e. "=" instead of ":=") is not really possible here, as there would be an infinite loop when evaluating CXXFLAGS). Yet we perform later additions to CPPFLAGS: HAVE_AV_CONFIG_H and BUILDING_libfoo are defined. These do not reach C++ compilations. To fix this a trick is employed to prepend to a recursively expanded variable while keeping it recursively expanded. There are two practical consequences of this: C++ files now no longer include the version.h header, but only the version_major.h header of their library, saving some recompilations. Furthermore, they now get some optimized math functions (namely the ones from lavu/intmath.h instead of the ones from lavu/common.h). (av_parity() is the only one for which it makes a difference.) Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
228 lines
6.4 KiB
Makefile
228 lines
6.4 KiB
Makefile
#
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# common bits used by all libraries
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#
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DEFAULT_X86ASMD=.dbg
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ifeq ($(DBG),1)
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X86ASMD=$(DEFAULT_X86ASMD)
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else
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X86ASMD=
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endif
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ifndef SUBDIR
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BIN2CEXE = ffbuild/bin2c$(HOSTEXESUF)
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BIN2C = $(BIN2CEXE)
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ifndef V
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Q = @
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ECHO = printf "$(1)\t%s\n" $(2)
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BRIEF = CC CXX OBJCC HOSTCC HOSTLD AS X86ASM AR LD STRIP CP WINDRES NVCC BIN2C
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SILENT = DEPCC DEPHOSTCC DEPAS DEPX86ASM RANLIB RM
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MSG = $@
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M = @$(call ECHO,$(TAG),$@);
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$(foreach VAR,$(BRIEF), \
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$(eval override $(VAR) = @$$(call ECHO,$(VAR),$$(MSG)); $($(VAR))))
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$(foreach VAR,$(SILENT),$(eval override $(VAR) = @$($(VAR))))
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$(eval INSTALL = @$(call ECHO,INSTALL,$$(^:$(SRC_DIR)/%=%)); $(INSTALL))
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endif
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# Prepend to a recursively expanded variable without making it simply expanded.
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PREPEND = $(eval $(1) = $(patsubst %,$$(%), $(2)) $(value $(1)))
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# NASM requires -I path terminated with /
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IFLAGS := -I. -I$(SRC_LINK)/
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CPPFLAGS := $(IFLAGS) $(CPPFLAGS)
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CFLAGS += $(ECFLAGS)
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CCFLAGS = $(CPPFLAGS) $(CFLAGS)
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OBJCFLAGS += $(EOBJCFLAGS)
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OBJCCFLAGS = $(CPPFLAGS) $(CFLAGS) $(OBJCFLAGS)
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ASFLAGS := $(CPPFLAGS) $(ASFLAGS)
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# Use PREPEND here so that later (target-dependent) additions to CPPFLAGS
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# end up in CXXFLAGS.
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$(call PREPEND,CXXFLAGS, CPPFLAGS CFLAGS)
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X86ASMFLAGS += $(IFLAGS:%=%/) -I$(<D)/ -Pconfig.asm
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HOSTCCFLAGS = $(IFLAGS) $(HOSTCPPFLAGS) $(HOSTCFLAGS)
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LDFLAGS := $(ALLFFLIBS:%=$(LD_PATH)lib%) $(LDFLAGS)
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define COMPILE
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$(call $(1)DEP,$(1))
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$($(1)) $($(1)FLAGS) $($(2)) $($(1)_DEPFLAGS) $($(1)_C) $($(1)_O) $(patsubst $(SRC_PATH)/%,$(SRC_LINK)/%,$<)
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endef
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COMPILE_C = $(call COMPILE,CC)
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COMPILE_CXX = $(call COMPILE,CXX)
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COMPILE_S = $(call COMPILE,AS)
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COMPILE_M = $(call COMPILE,OBJCC)
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COMPILE_X86ASM = $(call COMPILE,X86ASM)
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COMPILE_HOSTC = $(call COMPILE,HOSTCC)
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COMPILE_NVCC = $(call COMPILE,NVCC)
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COMPILE_MMI = $(call COMPILE,CC,MMIFLAGS)
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COMPILE_MSA = $(call COMPILE,CC,MSAFLAGS)
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COMPILE_LSX = $(call COMPILE,CC,LSXFLAGS)
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COMPILE_LASX = $(call COMPILE,CC,LASXFLAGS)
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%_mmi.o: %_mmi.c
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$(COMPILE_MMI)
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%_msa.o: %_msa.c
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$(COMPILE_MSA)
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%_lsx.o: %_lsx.c
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$(COMPILE_LSX)
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%_lasx.o: %_lasx.c
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$(COMPILE_LASX)
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%.o: %.c
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$(COMPILE_C)
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%.o: %.cpp
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$(COMPILE_CXX)
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%.o: %.m
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$(COMPILE_M)
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%.s: %.c
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$(CC) $(CCFLAGS) -S -o $@ $<
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%.o: %.S
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$(COMPILE_S)
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%_host.o: %.c
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$(COMPILE_HOSTC)
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%$(DEFAULT_X86ASMD).asm: %.asm
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$(DEPX86ASM) $(X86ASMFLAGS) -M -o $@ $< > $(@:.asm=.d)
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$(X86ASM) $(X86ASMFLAGS) -e $< | sed '/^%/d;/^$$/d;' > $@
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%.o: %.asm
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$(COMPILE_X86ASM)
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-$(if $(ASMSTRIPFLAGS), $(STRIP) $(ASMSTRIPFLAGS) $@)
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%.o: %.rc
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$(WINDRES) $(IFLAGS) $(foreach ARG,$(CC_DEPFLAGS),--preprocessor-arg "$(ARG)") -o $@ $<
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%.i: %.c
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$(CC) $(CCFLAGS) $(CC_E) $<
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%.h.c:
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$(Q)echo '#include "$*.h"' >$@
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$(BIN2CEXE): ffbuild/bin2c_host.o
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$(HOSTLD) $(HOSTLDFLAGS) $(HOSTLD_O) $^ $(HOSTEXTRALIBS)
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%.metal.air: %.metal
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$(METALCC) $< -o $@
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%.metallib: %.metal.air
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$(METALLIB) --split-module-without-linking $< -o $@
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%.metallib.c: %.metallib $(BIN2CEXE)
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$(BIN2C) $< $@ $(subst .,_,$(basename $(notdir $@)))
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%.ptx: %.cu $(SRC_PATH)/compat/cuda/cuda_runtime.h
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$(COMPILE_NVCC)
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ifdef CONFIG_PTX_COMPRESSION
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%.ptx.gz: TAG = GZIP
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%.ptx.gz: %.ptx
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$(M)gzip -c9 $(patsubst $(SRC_PATH)/%,$(SRC_LINK)/%,$<) >$@
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%.ptx.c: %.ptx.gz $(BIN2CEXE)
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$(BIN2C) $(patsubst $(SRC_PATH)/%,$(SRC_LINK)/%,$<) $@ $(subst .,_,$(basename $(notdir $@)))
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else
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%.ptx.c: %.ptx $(BIN2CEXE)
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$(BIN2C) $(patsubst $(SRC_PATH)/%,$(SRC_LINK)/%,$<) $@ $(subst .,_,$(basename $(notdir $@)))
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endif
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clean::
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$(RM) $(BIN2CEXE)
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%.c %.h %.pc %.ver %.version: TAG = GEN
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# Dummy rule to stop make trying to rebuild removed or renamed headers
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%.h %_template.c:
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@:
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# Disable suffix rules. Most of the builtin rules are suffix rules,
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# so this saves some time on slow systems.
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.SUFFIXES:
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# Do not delete intermediate files from chains of implicit rules
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$(OBJS):
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endif
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include $(SRC_PATH)/ffbuild/arch.mak
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OBJS += $(OBJS-yes)
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SLIBOBJS += $(SLIBOBJS-yes)
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SHLIBOBJS += $(SHLIBOBJS-yes)
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STLIBOBJS += $(STLIBOBJS-yes)
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FFLIBS := $($(NAME)_FFLIBS) $(FFLIBS-yes) $(FFLIBS)
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TESTPROGS += $(TESTPROGS-yes)
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LDLIBS = $(FFLIBS:%=%$(BUILDSUF))
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FFEXTRALIBS := $(LDLIBS:%=$(LD_LIB)) $(foreach lib,EXTRALIBS-$(NAME) $(FFLIBS:%=EXTRALIBS-%),$($(lib))) $(EXTRALIBS)
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OBJS := $(sort $(OBJS:%=$(SUBDIR)%))
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SLIBOBJS := $(sort $(SLIBOBJS:%=$(SUBDIR)%))
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SHLIBOBJS := $(sort $(SHLIBOBJS:%=$(SUBDIR)%))
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STLIBOBJS := $(sort $(STLIBOBJS:%=$(SUBDIR)%))
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TESTOBJS := $(TESTOBJS:%=$(SUBDIR)tests/%) $(TESTPROGS:%=$(SUBDIR)tests/%.o)
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TESTPROGS := $(TESTPROGS:%=$(SUBDIR)tests/%$(EXESUF))
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HOSTOBJS := $(HOSTPROGS:%=$(SUBDIR)%.o)
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HOSTPROGS := $(HOSTPROGS:%=$(SUBDIR)%$(HOSTEXESUF))
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TOOLS += $(TOOLS-yes)
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TOOLOBJS := $(TOOLS:%=tools/%.o)
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TOOLS := $(TOOLS:%=tools/%$(EXESUF))
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HEADERS += $(HEADERS-yes)
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PATH_LIBNAME = $(foreach NAME,$(1),lib$(NAME)/$($(2)LIBNAME))
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DEP_LIBS := $(foreach lib,$(FFLIBS),$(call PATH_LIBNAME,$(lib),$(CONFIG_SHARED:yes=S)))
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STATIC_DEP_LIBS := $(foreach lib,$(FFLIBS),$(call PATH_LIBNAME,$(lib)))
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SRC_DIR := $(SRC_PATH)/lib$(NAME)
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ALLHEADERS := $(subst $(SRC_DIR)/,$(SUBDIR),$(wildcard $(SRC_DIR)/*.h $(SRC_DIR)/$(ARCH)/*.h))
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SKIPHEADERS += $(ARCH_HEADERS:%=$(ARCH)/%) $(SKIPHEADERS-)
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SKIPHEADERS := $(SKIPHEADERS:%=$(SUBDIR)%)
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HOBJS = $(filter-out $(SKIPHEADERS:.h=.h.o),$(ALLHEADERS:.h=.h.o))
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PTXOBJS = $(filter %.ptx.o,$(OBJS))
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$(HOBJS): CCFLAGS += $(CFLAGS_HEADERS)
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checkheaders: $(HOBJS)
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.SECONDARY: $(HOBJS:.o=.c) $(PTXOBJS:.o=.c) $(PTXOBJS:.o=.gz) $(PTXOBJS:.o=)
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alltools: $(TOOLS)
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$(HOSTOBJS): %.o: %.c
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$(COMPILE_HOSTC)
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$(HOSTPROGS): %$(HOSTEXESUF): %.o
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$(HOSTLD) $(HOSTLDFLAGS) $(HOSTLD_O) $^ $(HOSTEXTRALIBS)
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$(OBJS): | $(sort $(dir $(OBJS)))
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$(HOBJS): | $(sort $(dir $(HOBJS)))
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$(HOSTOBJS): | $(sort $(dir $(HOSTOBJS)))
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$(SLIBOBJS): | $(sort $(dir $(SLIBOBJS)))
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$(SHLIBOBJS): | $(sort $(dir $(SHLIBOBJS)))
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$(STLIBOBJS): | $(sort $(dir $(STLIBOBJS)))
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$(TESTOBJS): | $(sort $(dir $(TESTOBJS)))
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$(TOOLOBJS): | tools
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OUTDIRS := $(OUTDIRS) $(dir $(OBJS) $(HOBJS) $(HOSTOBJS) $(SLIBOBJS) $(SHLIBOBJS) $(STLIBOBJS) $(TESTOBJS))
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CLEANSUFFIXES = *.d *.gcda *.gcno *.h.c *.ho *.map *.o *.pc *.ptx *.ptx.gz *.ptx.c *.ver *.version *$(DEFAULT_X86ASMD).asm *~ *.ilk *.pdb
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LIBSUFFIXES = *.a *.lib *.so *.so.* *.dylib *.dll *.def *.dll.a
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define RULES
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clean::
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$(RM) $(HOSTPROGS) $(TESTPROGS) $(TOOLS)
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endef
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$(eval $(RULES))
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-include $(wildcard $(OBJS:.o=.d) $(HOSTOBJS:.o=.d) $(TESTOBJS:.o=.d) $(HOBJS:.o=.d) $(SHLIBOBJS:.o=.d) $(STLIBOBJS:.o=.d) $(SLIBOBJS:.o=.d)) $(OBJS:.o=$(DEFAULT_X86ASMD).d)
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