makefile.in

GCC编译器源代码

# End of language makefile fragments.
#
# Avoid a lot of time thinking about remaking Makefile.in and *.def.
.SUFFIXES: .in .def

Makefile: $(srcdir)/Makefile.in config.status $(srcdir)/version.c \
   $(xmake_file) $(tmake_file) $(LANG_MAKEFILES)
	$(SHELL) $(srcdir)/configure.frag $(srcdir) "$(SUBDIRS)" \
		"$(xmake_file)" "$(tmake_file)"
	cp config.status config.run
	$(SHELL) config.run
	rm -f config.run

$(srcdir)/configure: $(srcdir)/configure.in
	cd $(srcdir); autoconf

# cstamp-h.in controls rebuilding of config.in.
# It is named cstamp-h.in and not stamp-h.in so the mostlyclean rule doesn't
# delete it.  A stamp file is needed as autoheader won't update the file if
# nothing has changed.
# It remains in the source directory and is part of the distribution.
# This follows what is done in shellutils, fileutils, etc.
# "echo timestamp" is used instead of touch to be consistent with other
# packages that use autoconf (??? perhaps also to avoid problems with patch?).
# ??? Newer versions have a maintainer mode that may be useful here.
$(srcdir)/config.in: $(srcdir)/cstamp-h.in
$(srcdir)/cstamp-h.in: $(srcdir)/configure.in $(srcdir)/acconfig.h
	cd $(srcdir) && autoheader
	echo timestamp > $(srcdir)/cstamp-h.in
auto-config.h: cstamp-h ; @true
cstamp-h: config.in config.status
	CONFIG_HEADERS=auto-config.h:config.in $(SHELL) config.status

# Really, really stupid make features, such as SUN's KEEP_STATE, may force
# a target to build even if it is up-to-date.  So we must verify that
# config.status does not exist before failing.
config.status: configure version.c
	@if [ ! -f config.status ] ; then \
	  echo You must configure gcc.  Look at the INSTALL file for details.; \
	  false; \
	else \
	  $(SHELL) config.status --recheck; \
	fi

all.internal: start.encap rest.encap
# This is what to compile if making a cross-compiler.
# Note that we can compile enquire using the cross-compiler just built,
# although we can't run it on this machine.
all.cross: native gcc-cross specs stmp-headers $(LIBGCC) $(STMP_FIXPROTO) \
	$(LIBGCC1_TEST) $(EXTRA_PARTS) lang.all.cross
# This is what to compile if making gcc with a cross-compiler.
all.build: native xgcc $(EXTRA_PARTS) lang.all.build
# This is what must be made before installing GCC and converting libraries.
start.encap: native xgcc specs $(LIBGCC1) xlimits.h lang.start.encap
# These can't be made until after GCC can run.
rest.encap: stmp-headers $(LIBGCC) $(STMP_FIXPROTO) $(EXTRA_PARTS) lang.rest.encap
# This is what is made with the host's compiler
# whether making a cross compiler or not.
native: config.status auto-config.h cpp $(LANGUAGES) \
	$(EXTRA_PASSES) $(EXTRA_PROGRAMS) $(USE_COLLECT2)

# Define the names for selecting languages in LANGUAGES.
C c: cc1
PROTO: proto

# Tell GNU make these are phony targets.
.PHONY: C c PROTO proto

# On the target machine, finish building a cross compiler.
# This does the things that can't be done on the host machine.
rest.cross: $(LIBGCC) gfloat.h specs

# Verify that it works to compile and link libgcc1-test.
# If it does, then there are sufficient replacements for libgcc1.a.
libgcc1-test: libgcc1-test.o native $(GCC_PARTS)
	@echo "Testing libgcc1.  Ignore linker warning messages."
	$(GCC_FOR_TARGET) $(GCC_CFLAGS) libgcc1-test.o -o libgcc1-test \
	  -nostartfiles -nostdlib `$(GCC_FOR_TARGET) --print-libgcc-file-name`
libgcc1-test.o: libgcc1-test.c native xgcc
	$(GCC_FOR_TARGET) $(GCC_CFLAGS) $(ALL_CPPFLAGS) -c $(srcdir)/libgcc1-test.c

# Recompile all the language-independent object files.
# This is used only if the user explicitly asks for it.
compilations: ${OBJS}

# Create a list of the language-independent object files so the language
# subdirectories needn't mention their names explicitly.
stamp-objlist: $(OBJS) $(BC_OBJS)
	echo " $(OBJS) $(BC_OBJS)" | sed -e 's, \([a-z0-9]\), ../\1,g' -e 's/\.o/$(objext)/g' >stamp-objlist

# We call this executable `xgcc' rather than `gcc'
# to avoid confusion if the current directory is in the path
# and CC is `gcc'.  It is renamed to `gcc' when it is installed.
xgcc: gcc.o version.o choose-temp.o pexecute.o prefix.o version.o \
   $(LIBDEPS) $(EXTRA_GCC_OBJS)
	$(CC) $(ALL_CFLAGS) $(LDFLAGS) -o $@ gcc.o prefix.o version.o \
	  choose-temp.o pexecute.o $(EXTRA_GCC_OBJS) $(LIBS)

# Dump a specs file to make -B./ read these specs over installed ones.
specs: xgcc
	$(GCC_FOR_TARGET) -dumpspecs > tmp-specs
	mv tmp-specs specs

# We do want to create an executable named `xgcc', so we can use it to
# compile libgcc2.a.
# Also create gcc-cross, so that install-common will install properly.
gcc-cross: xgcc
	cp xgcc$(exeext) gcc-cross$(exeext)

cc1: $(P) $(C_OBJS) $(OBJS) $(BC_OBJS) $(LIBDEPS)
	$(CC) $(ALL_CFLAGS) $(LDFLAGS) -o $@ $(C_OBJS) $(OBJS) $(BC_OBJS) $(LIBS)

# Copy float.h from its source.
gfloat.h: $(FLOAT_H)
	-rm -f gfloat.h
	cp $(FLOAT_H) gfloat.h

# Create float.h source for the native machine.
# Make it empty if we can use the system float.h without changes.
float.h-nat: enquire
	-./enquire -f > tmp-float.h
	grep '#define [^_]' tmp-float.h >/dev/null || true > tmp-float.h
	mv tmp-float.h float.h-nat

# Create a dummy float.h source for a cross-compiler.
# ??? This isn't used anymore.  Should we create config/float-unkn.h
# and make that the default float_format in configure?
float.h-cross:
	echo "#ifndef	__GCC_FLOAT_NOT_NEEDED" > t-float.h-cross
	echo "#error float.h values not known for cross-compiler" >> t-float.h-cross
	echo "#endif" >> t-float.h-cross
	mv t-float.h-cross float.h-cross

# Used to compile enquire with standard cc, but have forgotten why.
# Let's try with GCC.
enquire: enquire.o $(GCC_PARTS)
	$(GCC_FOR_TARGET) $(GCC_CFLAGS) $(ENQUIRE_LDFLAGS) enquire.o -o $@
enquire.o: $(srcdir)/enquire.c $(GCC_PASSES) stmp-int-hdrs
	rm -f include/float.h
	if $(FLOAT_H_TEST); then \
	  SYS_FLOAT_H_WRAP=1; \
	else :; \
	  SYS_FLOAT_H_WRAP=0; \
	fi; \
	$(GCC_FOR_TARGET) $(GCC_CFLAGS) $(ALL_CPPFLAGS) $(ENQUIRE_CFLAGS) \
	  -DSYS_FLOAT_H_WRAP=$$SYS_FLOAT_H_WRAP \
	  -I. -c $(srcdir)/enquire.c

# Build the version of limits.h that we will install.
xlimits.h: glimits.h limitx.h limity.h
	if $(LIMITS_H_TEST) ; then \
	  cat $(srcdir)/limitx.h $(srcdir)/glimits.h $(srcdir)/limity.h > tmp-xlimits.h; \
	else \
	  cat $(srcdir)/glimits.h > tmp-xlimits.h; \
	fi
	mv tmp-xlimits.h xlimits.h
#
# Build libgcc.a.
# This is done in two parts because some functions, in libgcc1.c,
# must be compiled with something other than GCC,
# while the rest, in libgcc2.c, must be compiled with xgcc.
# That means we can't do libgcc2.c until after xgcc, cc1, etc.

# Use this as value of LIBGCC1 to cause conversion to GNU library format.
# LIBCONVERT should put its output in libgcc1.conv.
libgcc1.conv: libgcc1.a
	$(LIBCONVERT) libgcc1.a libgcc1.conv

# Use this as value of LIBGCC1 to inhibit use of libgcc1.c entirely.
# Make an empty file instead.
libgcc1.null: $(GCC_PASSES)
	echo "__foo () {}" > dummy.c
	$(GCC_FOR_TARGET) $(GCC_CFLAGS) -c dummy.c
	$(OLDAR) $(OLDAR_FLAGS) libgcc1.null dummy$(objext)
	rm -f dummy$(objext) dummy.c

# This is $(LIBGCC1) for a cross-compiler.
# We have no automatic way of building libgcc1.a, 
# so it's up to the installer to find a way to do that.
# This rule deliberately does not depend on libgcc1.a
# so that it will fail if the installer hasn't provided it.
libgcc1.cross:
	mv libgcc1.a libgcc1.cross || (echo You must find a way to make libgcc1.a; false)

# Compile the library of arithmetic subroutines with the native compiler.
# Don't compile it with GCC!
# (That would cause most arithmetic functions to call themselves.)
#
# NOTE: If you modify these rules substantially, please be sure to
# check at least config/i386/t-sco5 and possibly other makefile
# fragments.
libgcc1.a: libgcc1.c $(CONFIG_H) $(LIB1FUNCS_EXTRA) config.status
	-rm -f tmplibgcc1.a
# Actually build it in tmplibgcc1.a, then rename at end,
# so that libgcc1.a itself remains nonexistent if compilation is aborted.
# -e causes any failing command to make this rule fail.
# -e doesn't work in certain shells, so we test $$? as well.
# lynx has a broken ar, it always complains when the initial library is
# empty, thus this command works only if we don't do -e
# There is a trailing backslash (\) deleted from the following line.
#	set -e;
	for name in $(LIB1FUNCS); \
	do \
	  echo $${name}; \
	  rm -f $${name}$(objext); \
	  $(OLDCC) -DIN_LIBGCC1 $(CCLIBFLAGS) $(INCLUDES) -c -DL$${name} $(srcdir)/libgcc1.c; \
	  if [ $$? -eq 0 ] ; then true; else exit 1; fi; \
	  mv libgcc1$(objext) $${name}$(objext); \
	  $(OLDAR) $(OLDAR_FLAGS) tmplibgcc1.a $${name}$(objext); \
	  rm -f $${name}$(objext); \
	done
# Some shells crash when a loop has no items.
# So make sure there is always at least one--`..'.
# Then ignore it.
# We don't use -e here because there are if statements
# that should not make the command give up when the if condition is false.
# Instead, we test for failure after each command where it matters.
	for file in .. $(LIB1FUNCS_EXTRA); \
	do \
	  if [ x$${file} != x.. ]; then \
	    name=`echo $${file} | sed -e 's/[.][cS]$$//' -e 's/[.]asm$$//'`; \
	    echo $${name}; \
	    if [ $${name}.asm = $${file} ]; then \
	      cp $${file} $${name}.s || exit 1; file=$${name}.s; \
	    else true; fi; \
	    $(OLDCC) -DIN_LIBGCC1 $(CCLIBFLAGS) $(INCLUDES) -c $${file}; \
	    if [ $$? -eq 0 ] ; then true; else exit 1; fi; \
	    $(OLDAR) $(OLDAR_FLAGS) tmplibgcc1.a $${name}$(objext); \
	    if [ $$? -eq 0 ] ; then true; else exit 1; fi; \
	    rm -f $${name}.s $${name}$(objext); \
	  else true; \
	  fi; \
	done
	-if $(RANLIB_TEST) ; then $(RANLIB) tmplibgcc1.a; else true; fi
	mv tmplibgcc1.a libgcc1.a

# Build libgcc1.a from assembler source.  LIB1ASMFUNCS is the list of
# functions.  LIB1ASMSRC is the name of the source file in the config
# subdirectory.
libgcc1-asm.a: libgcc2.ready config.status $(srcdir)/config/$(LIB1ASMSRC)
	-rm -f tmplibgcc1.a libgcc1.S
	cp $(srcdir)/config/$(LIB1ASMSRC) libgcc1.S
# Actually build it in tmplibgcc1.a, then rename at end,
# so that libgcc1-asm.a itself remains nonexistent if compilation is aborted.
# -e causes any failing command to make this rule fail.
# -e doesn't work in certain shells, so we test $$? as well.
# lynx has a broken ar, it always complains when the initial library is
# empty, thus this command works only if we don't do -e
# There is a trailing backslash (\) deleted from the following line.
#	set -e;
	for name in $(LIB1ASMFUNCS); \
	do \
	  echo $${name}; \
	  $(GCC_FOR_TARGET) $(LIBGCC2_CFLAGS) $(INCLUDES) -c -DL$${name} libgcc1.S; \
	  if [ $$? -eq 0 ] ; then true; else exit 1; fi; \
	  mv libgcc1$(objext) $${name}$(objext); \
	  $(AR) $(AR_FLAGS) tmplibgcc1.a $${name}$(objext); \
	  rm -f $${name}$(objext); \
	done
	-rm -f libgcc1.S
	mv tmplibgcc1.a libgcc1-asm.a

# Generate assembly versions of the functions required for libgcc1.
# You'll still need to massage the code by hand (possibly hacking
# underscores and local labels) but this will get you started.
libgcc1.S: libgcc1.c $(CONFIG_H) config.status
	-rm -f libgcc1.S
	touch libgcc1.S
	for name in $(LIB1FUNCS); \
	do \
	  echo $${name}; \
	  $(OLDCC) -DIN_LIBGCC1 $(CCLIBFLAGS) $(INCLUDES) -S -DL$${name} $(srcdir)/libgcc1.c; \
	  if [ $$? -eq 0 ] ; then true; else exit 1; fi; \
	  echo '#ifdef ' L$${name} >> libgcc1.S; \
	  cat  libgcc1.s >> libgcc1.S; \
	  echo '#endif /*' L$${name} '*/' >> libgcc1.S; \
	  echo "" >> libgcc1.S; \
	done

# Compiling libgcc2.a requires making sure that cc1, etc. have been compiled.
# But recompiling cc1 should not force recompilation of libgcc2.a.
# If you want to force recompilation, delete libgcc2.a.
libgcc2.ready: $(GCC_PASSES) $(LIBGCC2_DEPS) stmp-int-hdrs
	-if [ -f libgcc2.ready ] ; then \
		true; \
	else \
		touch libgcc2.ready; \
	fi

LIB2ADD = $(srcdir)/frame.c $(LIB2FUNCS_EXTRA) $(LANG_LIB2FUNCS)
libgcc2.a: libgcc2.c libgcc2.ready $(CONFIG_H) $(LIB2ADD) \
   machmode.h longlong.h frame.h gansidecl.h gbl-ctors.h config.status
# Actually build it in tmplibgcc2.a, then rename at end,
# so that libgcc2.a itself remains nonexistent if compilation is aborted.
	-rm -f tmplibgcc2.a
# -e causes any failing command to make this rule fail.
# -e doesn't work in certain shells, so we test $$? as well.
# lynx has a broken ar, it always complains when the initial library is
# empty, thus this command works only if we don't do -e
# There is a trailing backslash (\) deleted from the following line.
#	set -e;
	for name in $(LIB2FUNCS); \
	do \
	  echo $${name}; \
	  $(GCC_FOR_TARGET) $(LIBGCC2_CFLAGS) $(INCLUDES) -c -DL$${name} \
	      $(srcdir)/libgcc2.c -o $${name}$(objext); \
	  if [ $$? -eq 0 ] ; then true; else exit 1; fi; \
	  $(AR) $(AR_FLAGS) tmplibgcc2.a $${name}$(objext); \
	  rm -f $${name}$(objext); \
	done
# Some shells crash when a loop has no items.
# So make sure there is always at least one--`..'.
# Then ignore it.
# We don't use -e here because there are if statements
# that should not make the command give up when the if condition is false.
# Instead, we test for failure after each command where it matters.
	for file in $(LIB2ADD); do \
	  name=`echo $${file} | sed -e 's/[.][cSo]$$//' -e 's/[.]asm$$//' -e 's/[.]txt$$//'`; \
	  oname=` echo $${name} | sed -e 's,.*/,,'`; \
	  if [ $${name}.txt = $${file} ]; then \
	    for f in .. `cat $${file}`; do if [ x$${f} != x.. ]; then \
	      $(MAKE) GCC_FOR_TARGET="$(GCC_FOR_TARGET)" \
		AR="$(AR)" AR_FLAGS="$(AR_FLAGS)" CC="$(CC)" \
		CFLAGS="$(CFLAGS)" HOST_PREFIX="$(HOST_PREFIX)" \
		HOST_PREFIX_1="$(HOST_PREFIX_1)" \
		LANGUAGES="$(LANGUAGES)" \
		LIBGCC2_CFLAGS="$(LIBGCC2_CFLAGS)" $${f}; \
	      if [ $$? -eq 0 ] ; then true; else exit 1; fi; \
	      $(AR) $(AR_FLAGS) tmplibgcc2.a $${f}; \
	      rm -f $${f}; \
	    else true; \
	    fi; done; \