X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=Rules.mak;h=6df828c7c658a03fb75114b2a2eab871ee62081f;hb=5d8843e451c01d8abfe6b5be772637310e9e581e;hp=a70ef8cc5e8b47188dc8cd4256fbf3fc9aeb63c8;hpb=164a5be04ebe59c9b5e0df97faa2543b8af2d7e8;p=oweals%2Fbusybox.git diff --git a/Rules.mak b/Rules.mak index a70ef8cc5..6df828c7c 100644 --- a/Rules.mak +++ b/Rules.mak @@ -13,8 +13,8 @@ endif #-------------------------------------------------------- PROG := busybox MAJOR_VERSION :=1 -MINOR_VERSION :=1 -SUBLEVEL_VERSION:=1 +MINOR_VERSION :=2 +SUBLEVEL_VERSION:=0 EXTRAVERSION := VERSION :=$(MAJOR_VERSION).$(MINOR_VERSION).$(SUBLEVEL_VERSION)$(EXTRAVERSION) BUILDTIME := $(shell TZ=UTC date -u "+%Y.%m.%d-%H:%M%z") @@ -24,69 +24,47 @@ BUILDTIME := $(shell TZ=UTC date -u "+%Y.%m.%d-%H:%M%z") # With a modern GNU make(1) (highly recommended, that's what all the # developers use), all of the following configuration values can be # overridden at the command line. For example: -# make CROSS=powerpc-linux- top_srcdir="$HOME/busybox" PREFIX=/mnt/app +# make CROSS_COMPILE=powerpc-linux- top_srcdir="$HOME/busybox" PREFIX=/mnt/app #-------------------------------------------------------- -# If you are running a cross compiler, you will want to set 'CROSS' +# If you are running a cross compiler, you will want to set CROSS_COMPILE # to something more interesting... Target architecture is determined # by asking the CC compiler what arch it compiles things for, so unless # your compiler is broken, you should not need to specify TARGET_ARCH -CROSS =$(subst ",, $(strip $(CROSS_COMPILER_PREFIX))) -CC = $(CROSS)gcc -AR = $(CROSS)ar -AS = $(CROSS)as -LD = $(CROSS)ld -NM = $(CROSS)nm -STRIP = $(CROSS)strip +CC = $(CROSS_COMPILE)gcc +AR = $(CROSS_COMPILE)ar +AS = $(CROSS_COMPILE)as +LD = $(CROSS_COMPILE)ld +NM = $(CROSS_COMPILE)nm +STRIP = $(CROSS_COMPILE)strip +ELF2FLT = $(CROSS_COMPILE)elf2flt CPP = $(CC) -E SED ?= sed +BZIP2 ?= bzip2 # What OS are you compiling busybox for? This allows you to include # OS specific things, syscall overrides, etc. TARGET_OS=linux -# Select the compiler needed to build binaries for your development system -HOSTCC = gcc -HOSTCFLAGS= -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer - # Ensure consistent sort order, 'gcc -print-search-dirs' behavior, etc. LC_ALL:= C -# If you want to add some simple compiler switches (like -march=i686), -# especially from the command line, use this instead of CFLAGS directly. -# For optimization overrides, it's better still to set OPTIMIZATION. -CFLAGS_EXTRA=$(subst ",, $(strip $(EXTRA_CFLAGS_OPTIONS))) - -# To compile vs some other alternative libc, you may need to use/adjust -# the following lines to meet your needs... -# -# If you are using Red Hat 6.x with the compatible RPMs (for developing under -# Red Hat 5.x and glibc 2.0) uncomment the following. Be sure to read about -# using the compatible RPMs (compat-*) at http://www.redhat.com ! -#LIBCDIR:=/usr/i386-glibc20-linux -# -# For other libraries, you are on your own. But these may (or may not) help... -#LDFLAGS+=-nostdlib -#LIBRARIES:=$(LIBCDIR)/lib/libc.a -lgcc -#CROSS_CFLAGS+=-nostdinc -I$(LIBCDIR)/include -I$(GCCINCDIR) -funsigned-char -#GCCINCDIR:=$(shell gcc -print-search-dirs | sed -ne "s/install: \(.*\)/\1include/gp") - -WARNINGS=-Wall -Wstrict-prototypes -Wshadow -CFLAGS+=-I$(top_builddir)/include -I$(top_srcdir)/include -I$(srcdir) - +# This must bind late because srcdir is reset for every source subdirectory. +INCS:=-I$(top_builddir)/include -I$(top_srcdir)/include +CFLAGS=$(INCS) -I$(srcdir) -D_GNU_SOURCE +CFLAGS+=$(CHECKED_CFLAGS) ARFLAGS=cru - # gcc centric. Perhaps fiddle with findstring gcc,$(CC) for the rest # get the CC MAJOR/MINOR version CC_MAJOR:=$(shell printf "%02d" $(shell echo __GNUC__ | $(CC) -E -xc - | tail -n 1)) CC_MINOR:=$(shell printf "%02d" $(shell echo __GNUC_MINOR__ | $(CC) -E -xc - | tail -n 1)) #-------------------------------------------------------- -export VERSION BUILDTIME HOSTCC HOSTCFLAGS CROSS CC AR AS LD NM STRIP CPP +export VERSION BUILDTIME HOSTCC HOSTCFLAGS CROSS_COMPILE CC AR AS LD NM STRIP CPP ifeq ($(strip $(TARGET_ARCH)),) -TARGET_ARCH:=$(shell $(CC) -dumpmachine | sed -e s'/-.*//' \ +TARGET_ARCH:=$(shell $(CC) -dumpmachine | $(SED) -e s'/-.*//' \ -e 's/i.86/i386/' \ -e 's/sparc.*/sparc/' \ -e 's/arm.*/arm/g' \ @@ -100,22 +78,107 @@ TARGET_ARCH:=$(shell $(CC) -dumpmachine | sed -e s'/-.*//' \ ) endif -# A nifty macro to make testing gcc features easier -check_gcc=$(shell \ - if [ "$(1)" != "" ]; then \ - if $(CC) $(1) -S -o /dev/null -xc /dev/null > /dev/null 2>&1; \ - then echo "$(1)"; else echo "$(2)"; fi \ +# A nifty macro to make testing gcc features easier, but note that everything +# that uses this _must_ use := or it will be re-evaluated everytime it is +# referenced. +ifeq ($(strip $(BUILD_VERBOSE)),2) +VERBOSE_CHECK_CC=echo CC=\"$(1)\" check_cc $(2) >&2; +endif +check_cc=$(shell \ + $(VERBOSE_CHECK_CC) \ + if [ "x$(1)" != "x" ] && [ "x$(2)" != "x" ]; then \ + echo "int i;" > ./conftest.c; \ + if $(1) $(2) -c -o conftest.o conftest.c > /dev/null 2>&1; \ + then echo "$(2)"; else echo "$(3)"; fi ; \ + rm -f conftest.c conftest.o; \ fi) +ifneq ($(filter $(nocheck_targets),$(MAKECMDGOALS)),) +check_cc:= +endif + # A not very robust macro to check for available ld flags +ifeq ($(strip $(BUILD_VERBOSE)),2) +VERBOSE_CHECK_LD=echo LD=\"$(1)\" check_ld $(2) >&2; +endif check_ld=$(shell \ - if [ "x$(1)" != "x" ]; then \ - $(LD) --help | grep -q "\$(1)" && echo "-Wl,$(1)" ; \ + $(VERBOSE_CHECK_LD) \ + if [ "x$(1)" != "x" ] && [ "x$(2)" != "x" ]; then \ + $(1) -o /dev/null -b binary /dev/null > /dev/null 2>&1 && \ + echo "-Wl,$(2)" ; \ fi) -CFLAGS+=$(call check_gcc,-funsigned-char,) +ifneq ($(filter $(nocheck_targets),$(MAKECMDGOALS)),) +check_ld:= +endif + +# A not very robust macro to check for available strip flags +ifeq ($(strip $(BUILD_VERBOSE)),2) +VERBOSE_CHECK_STRIP=echo STRIPCMD=\"$(1)\" check_strip $(2) >&2; +endif +check_strip=$(shell \ + $(VERBOSE_CHECK_STRIP) \ + if [ "x$(1)" != "x" ] && [ "x$(2)" != "x" ]; then \ + echo "int i;" > ./conftest.c ; \ + $(CC) -c -o conftest.o conftest.c > /dev/null 2>&1 ; \ + $(1) $(2) conftest.o > /dev/null 2>&1 && \ + echo "$(1) $(2)" || echo "$(3)"; \ + rm -f conftest.c conftest.o > /dev/null 2>&1 ; \ + fi) + +ifneq ($(filter $(nocheck_targets),$(MAKECMDGOALS)),) +check_strip:= +endif + + +# Select the compiler needed to build binaries for your development system +HOSTCC = gcc +HOSTCFLAGS:=$(call check_cc,$(HOSTCC),-Wall,) +HOSTCFLAGS+=$(call check_cc,$(HOSTCC),-Wstrict-prototypes,) +HOSTCFLAGS+=$(call check_cc,$(HOSTCC),-O2,) +HOSTCFLAGS+=$(call check_cc,$(HOSTCC),-fomit-frame-pointer,) + +LD_WHOLE_ARCHIVE:=$(shell echo "int i;" > conftest.c ; \ + $(CC) -c -o conftest.o conftest.c ; \ + echo "int main(void){return 0;}" > conftest_main.c ; \ + $(CC) -c -o conftest_main.o conftest_main.c ; \ + $(AR) $(ARFLAGS) conftest.a conftest.o ; \ + $(CC) -Wl,--whole-archive conftest.a -Wl,--no-whole-archive \ + conftest_main.o -o conftest > /dev/null 2>&1 \ + && echo "-Wl,--whole-archive" ; \ + rm conftest_main.o conftest_main.c conftest.o conftest.c \ + conftest.a conftest > /dev/null 2>&1 ; ) +ifneq ($(findstring whole-archive,$(LD_WHOLE_ARCHIVE)),) +LD_NO_WHOLE_ARCHIVE:= -Wl,--no-whole-archive +endif + +LD_START_GROUP:=$(shell echo "int bar(void){return 0;}" > conftest.c ; \ + $(CC) -c -o conftest.o conftest.c ; \ + echo "int main(void){return bar();}" > conftest_main.c ; \ + $(CC) -c -o conftest_main.o conftest_main.c ; \ + $(AR) $(ARFLAGS) conftest.a conftest.o ; \ + $(CC) -Wl,--start-group conftest.a conftest_main.o -Wl,--end-group \ + -o conftest > /dev/null 2>&1 && echo "-Wl,--start-group" ; \ + rm conftest_main.o conftest_main.c conftest.o conftest.c \ + conftest.a conftest > /dev/null 2>&1 ; ) +ifneq ($(findstring start-group,$(LD_START_GROUP)),) +LD_END_GROUP:= -Wl,--end-group +endif + +CHECKED_LDFLAGS := $(call check_ld,$(LD),--warn-common,) + +# Pin CHECKED_CFLAGS with := so it's only evaluated once. +CHECKED_CFLAGS:=$(call check_cc,$(CC),-Wall,) +CHECKED_CFLAGS+=$(call check_cc,$(CC),-Wstrict-prototypes,) +CHECKED_CFLAGS+=$(call check_cc,$(CC),-Wshadow,) +CHECKED_CFLAGS+=$(call check_cc,$(CC),-funsigned-char,) +CHECKED_CFLAGS+=$(call check_cc,$(CC),-mmax-stack-frame=256,) +CHECKED_CFLAGS+=$(call check_cc,$(CC),-fno-builtin-strlen) +CHECKED_CFLAGS+=$(call check_cc,$(CC),-finline-limit=0) + +# Preemptively pin this too. +PROG_CFLAGS:= -CFLAGS+=$(call check_gcc,-mmax-stack-frame=256,) #-------------------------------------------------------- # Arch specific compiler optimization stuff should go here. @@ -123,22 +186,26 @@ CFLAGS+=$(call check_gcc,-mmax-stack-frame=256,) # for OPTIMIZATION... # use '-Os' optimization if available, else use -O2 -OPTIMIZATION:=$(call check_gcc,-Os,-O2) +OPTIMIZATION:=$(call check_cc,$(CC),-Os,-O2) ifeq ($(CONFIG_BUILD_AT_ONCE),y) # gcc 2.95 exits with 0 for "unrecognized option" ifeq ($(strip $(shell [ $(CC_MAJOR) -ge 3 ] ; echo $$?)),0) - CFLAGS_COMBINE:=$(call check_gcc,--combine,) + CFLAGS_COMBINE:=$(call check_cc,$(CC),--combine,) endif -OPTIMIZATION+=$(call check_gcc,-funit-at-a-time,) +OPTIMIZATION+=$(call check_cc,$(CC),-funit-at-a-time,) +OPTIMIZATION+=$(call check_cc,$(CC),-fgcse-after-reload,) +ifneq ($(CONFIG_BUILD_LIBBUSYBOX),y) # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25795 -#PROG_CFLAGS+=$(call check_gcc,-fwhole-program,) +# This prevents us from using -fwhole-program when we build the lib +PROG_CFLAGS+=$(call check_cc,$(CC),-fwhole-program,) +endif # CONFIG_BUILD_LIBBUSYBOX endif # CONFIG_BUILD_AT_ONCE -LIB_LDFLAGS:=$(call check_ld,--enable-new-dtags,) -#LIB_LDFLAGS+=$(call check_ld,--reduce-memory-overheads,) -#LIB_LDFLAGS+=$(call check_ld,--as-needed,) -#LIB_LDFLAGS+=$(call check_ld,--warn-shared-textrel,) +LIB_LDFLAGS:=$(call check_ld,$(LD),--enable-new-dtags,) +#LIB_LDFLAGS+=$(call check_ld,$(LD),--reduce-memory-overheads,) +#LIB_LDFLAGS+=$(call check_ld,$(LD),--as-needed,) +#LIB_LDFLAGS+=$(call check_ld,$(LD),--warn-shared-textrel,) # Some nice architecture specific optimizations @@ -146,25 +213,26 @@ ifeq ($(strip $(TARGET_ARCH)),arm) OPTIMIZATION+=-fstrict-aliasing endif ifeq ($(strip $(TARGET_ARCH)),i386) - OPTIMIZATION+=$(call check_gcc,-march=i386,) + OPTIMIZATION+=$(call check_cc,$(CC),-march=i386,) # gcc-4.0 and older seem to benefit from these #ifneq ($(strip $(shell [ $(CC_MAJOR) -ge 4 -a $(CC_MINOR) -ge 1 ] ; echo $$?)),0) - OPTIMIZATION+=$(call check_gcc,-mpreferred-stack-boundary=2,) - OPTIMIZATION+=$(call check_gcc,-falign-functions=1 -falign-jumps=1 -falign-loops=1,\ + OPTIMIZATION+=$(call check_cc,$(CC),-mpreferred-stack-boundary=2,) + OPTIMIZATION+=$(call check_cc,$(CC),-falign-functions=1 -falign-jumps=1 -falign-loops=1,\ -malign-functions=0 -malign-jumps=0 -malign-loops=0) #endif # gcc-4.0 and older # gcc-4.1 and beyond seem to benefit from these ifeq ($(strip $(shell [ $(CC_MAJOR) -ge 4 -a $(CC_MINOR) -ge 1 ] ; echo $$?)),0) # turn off flags which hurt -Os - OPTIMIZATION+=$(call check_gcc,-fno-tree-loop-optimize,) - OPTIMIZATION+=$(call check_gcc,-fno-tree-dominator-opts,) - OPTIMIZATION+=$(call check_gcc,-fno-strength-reduce,) + OPTIMIZATION+=$(call check_cc,$(CC),-fno-tree-loop-optimize,) + OPTIMIZATION+=$(call check_cc,$(CC),-fno-tree-dominator-opts,) + OPTIMIZATION+=$(call check_cc,$(CC),-fno-strength-reduce,) - OPTIMIZATION+=$(call check_gcc,-fno-branch-count-reg,) + OPTIMIZATION+=$(call check_cc,$(CC),-fno-branch-count-reg,) endif # gcc-4.1 and beyond endif -OPTIMIZATIONS:=$(OPTIMIZATION) $(call check_gcc,-fomit-frame-pointer,) +OPTIMIZATION+=$(call check_cc,$(CC),-fomit-frame-pointer,) +OPTIMIZATION+=$(call check_cc,$(CC),-ffunction-sections -fdata-sections,) # #-------------------------------------------------------- @@ -188,39 +256,55 @@ else LIBRARIES:=-lefence endif endif + +# Debugging info + ifeq ($(strip $(CONFIG_DEBUG)),y) - CFLAGS +=$(WARNINGS) -g -D_GNU_SOURCE - LDFLAGS += $(call check_ld,--warn-common,) + CFLAGS +=-g else - CFLAGS+=$(WARNINGS) $(OPTIMIZATIONS) -D_GNU_SOURCE -DNDEBUG - LDFLAGS += $(call check_ld,--warn-common,) - LDFLAGS += $(call check_ld,--sort-common,) + CFLAGS +=-DNDEBUG + CHECKED_LDFLAGS += $(call check_ld,$(LD),--sort-common,) + CHECKED_LDFLAGS += $(call check_ld,--gc-sections,) +endif + +ifneq ($(strip $(CONFIG_DEBUG_PESSIMIZE)),y) + CFLAGS += $(OPTIMIZATION) +endif + +# warn a bit more verbosely for non-release versions +ifneq ($(EXTRAVERSION),) + CHECKED_CFLAGS+=$(call check_cc,$(CC),-Wstrict-prototypes,) + CHECKED_CFLAGS+=$(call check_cc,$(CC),-Wmissing-prototypes,) + CHECKED_CFLAGS+=$(call check_cc,$(CC),-Wmissing-declarations,) + CHECKED_CFLAGS+=$(call check_cc,$(CC),-Wunused,) + CHECKED_CFLAGS+=$(call check_cc,$(CC),-Winit-self,) + CHECKED_CFLAGS+=$(call check_cc,$(CC),-Wshadow,) + CHECKED_CFLAGS+=$(call check_cc,$(CC),-Wcast-align,) endif -STRIPCMD:=$(STRIP) -s --remove-section=.note --remove-section=.comment +STRIPCMD:=$(call check_strip,$(STRIP),-s --remove-section=.note --remove-section=.comment,$(STRIP)) ifeq ($(strip $(CONFIG_STATIC)),y) - PROG_CFLAGS += $(call check_gcc,-static,) + PROG_CFLAGS += $(call check_cc,$(CC),-static,) endif -CFLAGS_SHARED += $(call check_gcc,-shared,) +CFLAGS_SHARED := $(call check_cc,$(CC),-shared,) LIB_CFLAGS+=$(CFLAGS_SHARED) ifeq ($(strip $(CONFIG_BUILD_LIBBUSYBOX)),y) - CFLAGS_PIC:= $(call check_gcc,-fPIC,) + CFLAGS_PIC:= $(call check_cc,$(CC),-fPIC,) LIB_CFLAGS+=$(CFLAGS_PIC) endif - ifeq ($(strip $(CONFIG_SELINUX)),y) - SELINUX_INC ?= /usr/include - SELINUX_LIB ?= /usr/lib - CFLAGS := -I$(SELINUX_INC) $(CFLAGS) - LDFLAGS := -L$(SELINUX_LIB) $(LDFLAGS) - LIBRARIES += -lselinux + LIBRARIES += -lselinux endif ifeq ($(strip $(PREFIX)),) PREFIX:=`pwd`/_install endif +ifneq ($(strip $(CONFIG_GETOPT_LONG)),y) + CFLAGS += -D__need_getopt +endif + # Additional complications due to support for pristine source dir. # Include files in the build directory should take precedence over # the copy in top_srcdir, both during the compilation phase and the @@ -229,14 +313,16 @@ endif OBJECTS:=$(APPLET_SOURCES:.c=.o) busybox.o usage.o applets.o -CFLAGS += $(CROSS_CFLAGS) +CFLAGS += $(CHECKED_CFLAGS) $(CROSS_CFLAGS) +LDFLAGS += $(CHECKED_LDFLAGS) + ifdef BB_INIT_SCRIPT CFLAGS += -DINIT_SCRIPT='"$(BB_INIT_SCRIPT)"' endif # Put user-supplied flags at the end, where they # have a chance of winning. -CFLAGS += $(CFLAGS_EXTRA) +-include $(top_builddir)/.config.mak #------------------------------------------------------------ # Installation options @@ -260,7 +346,7 @@ SECHO := @-false DISP := sil Q := @ else -ifneq ($(V)$(VERBOSE),) +ifneq ($(BUILD_VERBOSE),) SECHO := @-false DISP := ver Q := @@ -276,33 +362,65 @@ pur_disp_compile.c = echo " "CC $(show_objs) pur_disp_compile.h = echo " "HOSTCC $(show_objs) pur_disp_strip = echo " "STRIP $(show_objs) pur_disp_link = echo " "LINK $(show_objs) +pur_disp_link.h = echo " "HOSTLINK $(show_objs) pur_disp_ar = echo " "AR $(ARFLAGS) $(show_objs) +pur_disp_elf2flt = echo " "ELF2FLT $(ELF2FLTFLAGS) $(show_objs) sil_disp_compile.c = true sil_disp_compile.h = true sil_disp_strip = true sil_disp_link = true +sil_disp_link.h = true sil_disp_ar = true +sil_disp_elf2flt = true ver_disp_compile.c = echo $(cmd_compile.c) ver_disp_compile.h = echo $(cmd_compile.h) ver_disp_strip = echo $(cmd_strip) ver_disp_link = echo $(cmd_link) +ver_disp_link.h = echo $(cmd_link.h) ver_disp_ar = echo $(cmd_ar) +ver_disp_elf2flt = echo $(cmd_elf2flt) disp_compile.c = $($(DISP)_disp_compile.c) disp_compile.h = $($(DISP)_disp_compile.h) disp_strip = $($(DISP)_disp_strip) disp_link = $($(DISP)_disp_link) +disp_link.h = $($(DISP)_disp_link.h) disp_ar = $($(DISP)_disp_ar) disp_gen = $(SECHO) " "GEN $@ ; true disp_doc = $(SECHO) " "DOC $(subst docs/,,$@) ; true +disp_elf2flt = $($(DISP)_disp_elf2flt) cmd_compile.c = $(CC) $(CFLAGS) $(EXTRA_CFLAGS) -c -o $@ $< -cmd_compile.h = $(HOSTCC) $(HOSTCFLAGS) -c -o $@ $< +cmd_compile.h = $(HOSTCC) $(HOSTCFLAGS) $(INCS) -c -o $@ $< cmd_strip = $(STRIPCMD) $@ -cmd_link = $(CC) $(CFLAGS) $(EXTRA_CFLAGS) $(LDFLAGS) +cmd_link = $(CC) $(CFLAGS) $(EXTRA_CFLAGS) $(LDFLAGS) \ + $(PROG_CFLAGS) $(PROG_LDFLAGS) $(CFLAGS_COMBINE) \ + -o $@ $(LD_START_GROUP) \ + $(APPLETS_DEFINE) $(APPLET_SRC) \ + $(BUSYBOX_DEFINE) $(BUSYBOX_SRC) $(libraries-y) \ + $(LDBUSYBOX) $(LIBRARIES) \ + $(LD_END_GROUP) +cmd_link.so = $(CC) $(CFLAGS) $(EXTRA_CFLAGS) $(LDFLAGS) \ + $(LIB_CFLAGS) $(CFLAGS_COMBINE) $(LIB_LDFLAGS) \ + -o $(@) $(LD_START_GROUP) $(LD_WHOLE_ARCHIVE) \ + $(LIBRARY_DEFINE) $(^) \ + $(LD_NO_WHOLE_ARCHIVE) $(LD_END_GROUP) +cmd_link.h = $(HOSTCC) $(HOSTCFLAGS) $(INCS) $< -o $@ cmd_ar = $(AR) $(ARFLAGS) $@ $^ +cmd_elf2flt = $(ELF2FLT) $(ELF2FLTFLAGS) $< -o $@ compile.c = @$(disp_compile.c) ; $(cmd_compile.c) compile.h = @$(disp_compile.h) ; $(cmd_compile.h) do_strip = @$(disp_strip) ; $(cmd_strip) do_link = @$(disp_link) ; $(cmd_link) +do_link.so = @$(disp_link) ; $(cmd_link.so) +do_link.h = @$(disp_link.h) ; $(cmd_link.h) do_ar = @$(disp_ar) ; $(cmd_ar) +do_elf2flt = @$(disp_elf2flt) ; $(cmd_elf2flt) + +uppercase = $(shell echo $1 | $(SED) -e "y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/") +%.a: + @if test -z "$($(call uppercase,$*)_DIR)" ; then \ + echo "Invalid target $@" ; \ + exit 1 ; \ + fi + $(Q)$(MAKE) $($(call uppercase,$*)_DIR)$@ .PHONY: dummy