newlib/libgloss/msp430/Makefile.in

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# Copyright (c) 2008-2014 Red Hat, Inc. All rights reserved.
#
# This copyrighted material is made available to anyone wishing to use, modify,
# copy, or redistribute it subject to the terms and conditions of the BSD
# License. This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY expressed or implied, including the implied warranties
# of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. A copy of this license
# is available at http://www.opensource.org/licenses. Any Red Hat trademarks that
# are incorporated in the source code or documentation are not subject to the BSD
# License and may only be used or replicated with the express permission of
# Red Hat, Inc.
# Makefile for libgloss/msp430.
DESTDIR =
VPATH = @srcdir@
srcdir = @srcdir@
objdir = .
srcroot = $(srcdir)/../..
objroot = $(objdir)/../..
prefix = @prefix@
exec_prefix = @exec_prefix@
host_alias = @host_alias@
target_alias = @target_alias@
bindir = @bindir@
libdir = @libdir@
tooldir = $(exec_prefix)/$(target_alias)
# Multilib support variables.
# TOP is used instead of MULTI{BUILD,SRC}TOP.
MULTIDIRS =
MULTISUBDIR =
MULTIDO = true
MULTICLEAN = true
INSTALL = @INSTALL@
INSTALL_PROGRAM = @INSTALL_PROGRAM@
INSTALL_DATA = @INSTALL_DATA@
SHELL = /bin/sh
CC = @CC@
AS = @AS@
AR = @AR@
LD = @LD@
RANLIB = @RANLIB@
AR_FLAGS = rc
OBJDUMP = `if [ -f ${objroot}/../binutils/objdump ] ; \
then echo ${objroot}/../binutils/objdump ; \
else t='$(program_transform_name)'; echo objdump | sed -e $$t ; fi`
OBJCOPY = `if [ -f ${objroot}/../binutils/objcopy ] ; \
then echo ${objroot}/../binutils/objcopy ; \
else t='$(program_transform_name)'; echo objcopy | sed -e $$t ; fi`
SCRIPTS = $(srcdir)/msp430-sim.ld
SCRIPTS += $(srcdir)/msp430xl-sim.ld
SCRIPTS += $(srcdir)/intr_vectors.ld
MSP430: Remove .init/.fini sections The .init/.fini sections are not required for msp430-elf, and add unnecessary code bloat to the CRT library. These sections are specified as "unused" by the MSP430 EABI. .init existed to call __crt0_run_{init,preinit}_array which run through the functions in .{init,preinit}_array. __crt0_run_{init,preinit}_array are already dynamically included like the other crt0 functions, so these can be placed before the call to main, which ensures they are still called if needed. With these functions moved, .init has no purpose and can be removed. .fini existed to call __crt0_run_fini_array. However, the "__msp430_fini" symbol which marks the start of .fini has never been used, so no termination routines have ever been run for msp430. On returning from main(), _exit() is called which just loops forever. So there is no current expectation that __crt0_run_fini_array will get called by the CRT code. Further work is to ensure functions registered with atexit can be optionally called during program termination, and then __crt0_run_fini_array can be registered with atexit during program initialization. The mechanisms for supporting the "-minrt" option have also been removed. "-minrt" enabled a "minimum runtime environment" by removing calls to functions which run global static initializers and constructors. Since this behaviour is now dynamic, and these functions are only included when needed, the minrt versions of the CRT object files are no longer required.
2019-07-24 11:45:49 +02:00
CRT = gcrt0.o crt0.o
SIM_BSP = libsim.a
LIB_NOSYS = libnosys.a
LIB_CRT = libcrt.a
SIM_OBJS = syscalls.o \
cio.o \
write.o \
unlink.o \
sbrk.o
NOSYS_OBJS = ciosyscalls.o \
cio.o \
write.o \
unlink.o \
sbrk.o
# Each crt_*.o is built from crt0.S using -DL*. crt0.o is built from
# crt0.s with -DL0 via the default rule below.
CRT_OBJS = \
crt_bss.o \
crt_high_bss.o \
crt_movedata.o \
crt_move_highdata.o \
crt_main.o \
crt_callexit.o \
crt_run_init_array.o \
crt_run_preinit_array.o \
crt_run_fini_array.o \
crt_run_array.o \
crt_init.o
#### Host specific Makefile fragment comes in here.
@host_makefile_frag@
all: $(CRT) $(SIM_BSP) $(LIB_NOSYS) $(LIB_CRT) copy_scripts_to_objdir
crt_%.o : crt0.S
$(CC) -DL$* -Wa,-gdwarf2 -Wa,-I$(srcdir) $(CFLAGS_FOR_TARGET) $(INCLUDES) $(CFLAGS) -c $< -o $@
# Override .S.o rule to pass assembler debugging flags
.S.o:
$(CC) -DL0 -Wa,-gdwarf2 -Wa,-I$(srcdir) $(CFLAGS_FOR_TARGET) $(INCLUDES) $(CFLAGS) -c $<
$(SIM_BSP): $(SIM_OBJS)
$(AR) $(ARFLAGS) $@ $?
$(RANLIB) $@
$(LIB_NOSYS): $(NOSYS_OBJS)
$(AR) $(ARFLAGS) $@ $?
$(RANLIB) $@
$(LIB_CRT): $(CRT_OBJS)
$(AR) $(ARFLAGS) $@ $?
$(RANLIB) $@
copy_scripts_to_objdir: $(SCRIPTS)
cp $(SCRIPTS) $(objdir)
# Dependencies
SDEPS = $(srcdir)/cio.h
abort.o : $(SDEPS)
argv.o : $(SDEPS)
argvlen.o : $(SDEPS)
chdir.o : $(SDEPS)
chmod.o : $(SDEPS)
close.o : $(SDEPS)
exit.o : $(SDEPS)
fstat.o : $(SDEPS)
getpid.o : $(SDEPS)
gettimeofday.o : $(SDEPS)
gcrt0.o: gcrt0.S crt0.S
kill.o : $(SDEPS)
link.o : $(SDEPS)
lseek.o : $(SDEPS)
mcount.o : $(SDEPS)
open.o : $(SDEPS)
read.o : $(SDEPS)
sigprocmask.o : $(SDEPS)
sleep.o : $(SDEPS)
stat.o : $(SDEPS)
time.o : $(SDEPS)
times.o : $(SDEPS)
unlink.o : $(SDEPS)
utime.o : $(SDEPS)
write.o : $(SDEPS)
install: $(CRT) $(SIM_BSP) $(LIB_NOSYS) $(LIB_CRT) $(SCRIPTS)
mkdir -p $(DESTDIR)$(tooldir)/lib${MULTISUBDIR}
for c in $(CRT) $(SIM_BSP) $(LIB_NOSYS) $(LIB_CRT); do \
$(INSTALL_DATA) $$c $(DESTDIR)$(tooldir)/lib${MULTISUBDIR}/$$c ;\
done
for c in $(SCRIPTS); do \
b=`basename $$c`; \
$(INSTALL_DATA) $$c $(DESTDIR)$(tooldir)/lib${MULTISUBDIR}/$$b ;\
done
clean mostlyclean:
rm -f *.o *.a
distclean maintainer-clean realclean: clean
rm -f Makefile config.cache config.log config.status
.PHONY: info dvi doc install-info clean-info
info doc dvi:
install-info:
clean-info:
Makefile: Makefile.in config.status @host_makefile_frag_path@
$(SHELL) config.status
config.status: configure
$(SHELL) config.status --recheck