mirror of
https://github.com/qemu/qemu.git
synced 2024-12-11 20:53:51 +08:00
3c4a4d0dcb
MacOSX 10.8 ("Mountain Lion") requires us to compile our one
Objective-C source file with clang even if the rest of QEMU
requires a real gcc, because the system headers we use make
use of Apple's "Blocks" extension to C/ObjC, and mainline
gcc doesn't support that. Since we only need to use a true
gcc for the parts of QEMU that use the fixed-register
env variable, we can simply use clang to build the ObjC
file: it will link to the gcc-built objects with no problems.
Add the necessary support for an OBJCC variable in the
makefile and configure machinery; we default to clang
if we have it, otherwise whatever CC is (since gcc
might be the Apple gcc which does support Blocks).
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
118 lines
3.5 KiB
Makefile
118 lines
3.5 KiB
Makefile
|
|
# Don't use implicit rules or variables
|
|
# we have explicit rules for everything
|
|
MAKEFLAGS += -rR
|
|
|
|
# Files with this suffixes are final, don't try to generate them
|
|
# using implicit rules
|
|
%.d:
|
|
%.h:
|
|
%.c:
|
|
%.m:
|
|
%.mak:
|
|
|
|
# Flags for dependency generation
|
|
QEMU_DGFLAGS += -MMD -MP -MT $@ -MF $(*D)/$(*F).d
|
|
|
|
%.o: %.c
|
|
$(call quiet-command,$(CC) $(QEMU_INCLUDES) $(QEMU_CFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) -c -o $@ $<," CC $(TARGET_DIR)$@")
|
|
|
|
ifeq ($(LIBTOOL),)
|
|
%.lo: %.c
|
|
@echo "missing libtool. please install and rerun configure"; exit 1
|
|
else
|
|
%.lo: %.c
|
|
$(call quiet-command,$(LIBTOOL) --mode=compile --quiet --tag=CC $(CC) $(QEMU_INCLUDES) $(QEMU_CFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) -c -o $@ $<," lt CC $@")
|
|
endif
|
|
|
|
%.o: %.S
|
|
$(call quiet-command,$(CC) $(QEMU_INCLUDES) $(QEMU_CFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) -c -o $@ $<," AS $(TARGET_DIR)$@")
|
|
|
|
%.o: %.m
|
|
$(call quiet-command,$(OBJCC) $(QEMU_INCLUDES) $(QEMU_CFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) -c -o $@ $<," OBJC $(TARGET_DIR)$@")
|
|
|
|
LINK = $(call quiet-command,$(CC) $(QEMU_CFLAGS) $(CFLAGS) $(LDFLAGS) -o $@ $(sort $(1)) $(LIBS)," LINK $(TARGET_DIR)$@")
|
|
|
|
%$(EXESUF): %.o
|
|
$(call LINK,$^)
|
|
|
|
%.a:
|
|
$(call quiet-command,rm -f $@ && $(AR) rcs $@ $^," AR $(TARGET_DIR)$@")
|
|
|
|
quiet-command = $(if $(V),$1,$(if $(2),@echo $2 && $1, @$1))
|
|
|
|
# cc-option
|
|
# Usage: CFLAGS+=$(call cc-option, -falign-functions=0, -malign-functions=0)
|
|
|
|
cc-option = $(if $(shell $(CC) $1 $2 -S -o /dev/null -xc /dev/null \
|
|
>/dev/null 2>&1 && echo OK), $2, $3)
|
|
|
|
VPATH_SUFFIXES = %.c %.h %.S %.m %.mak %.texi %.sh
|
|
set-vpath = $(if $1,$(foreach PATTERN,$(VPATH_SUFFIXES),$(eval vpath $(PATTERN) $1)))
|
|
|
|
# find-in-path
|
|
# Usage: $(call find-in-path, prog)
|
|
# Looks in the PATH if the argument contains no slash, else only considers one
|
|
# specific directory. Returns an # empty string if the program doesn't exist
|
|
# there.
|
|
find-in-path = $(if $(find-string /, $1), \
|
|
$(wildcard $1), \
|
|
$(wildcard $(patsubst %, %/$1, $(subst :, ,$(PATH)))))
|
|
|
|
# Generate files with tracetool
|
|
TRACETOOL=$(PYTHON) $(SRC_PATH)/scripts/tracetool.py
|
|
|
|
# Generate timestamp files for .h include files
|
|
|
|
%.h: %.h-timestamp
|
|
@test -f $@ || cp $< $@
|
|
|
|
%.h-timestamp: %.mak
|
|
$(call quiet-command, sh $(SRC_PATH)/scripts/create_config < $< > $@, " GEN $*.h")
|
|
@cmp $@ $*.h >/dev/null 2>&1 || cp $@ $*.h
|
|
|
|
# will delete the target of a rule if commands exit with a nonzero exit status
|
|
.DELETE_ON_ERROR:
|
|
|
|
# magic to descend into other directories
|
|
|
|
obj := .
|
|
old-nested-dirs :=
|
|
|
|
define push-var
|
|
$(eval save-$2-$1 = $(value $1))
|
|
$(eval $1 :=)
|
|
endef
|
|
|
|
define pop-var
|
|
$(eval subdir-$2-$1 := $(if $(filter $2,$(save-$2-$1)),$(addprefix $2,$($1))))
|
|
$(eval $1 = $(value save-$2-$1) $$(subdir-$2-$1))
|
|
$(eval save-$2-$1 :=)
|
|
endef
|
|
|
|
define unnest-dir
|
|
$(foreach var,$(nested-vars),$(call push-var,$(var),$1/))
|
|
$(eval obj := $(obj)/$1)
|
|
$(eval include $(SRC_PATH)/$1/Makefile.objs)
|
|
$(eval obj := $(patsubst %/$1,%,$(obj)))
|
|
$(foreach var,$(nested-vars),$(call pop-var,$(var),$1/))
|
|
endef
|
|
|
|
define unnest-vars-1
|
|
$(eval nested-dirs := $(filter-out \
|
|
$(old-nested-dirs), \
|
|
$(sort $(foreach var,$(nested-vars), $(filter %/, $($(var)))))))
|
|
$(if $(nested-dirs),
|
|
$(foreach dir,$(nested-dirs),$(call unnest-dir,$(patsubst %/,%,$(dir))))
|
|
$(eval old-nested-dirs := $(old-nested-dirs) $(nested-dirs))
|
|
$(call unnest-vars-1))
|
|
endef
|
|
|
|
define unnest-vars
|
|
$(call unnest-vars-1)
|
|
$(foreach var,$(nested-vars),$(eval $(var) := $(filter-out %/, $($(var)))))
|
|
$(shell mkdir -p $(sort $(foreach var,$(nested-vars),$(dir $($(var))))))
|
|
$(foreach var,$(nested-vars), $(eval \
|
|
-include $(addsuffix *.d, $(sort $(dir $($(var)))))))
|
|
endef
|