diff options
Diffstat (limited to 'config-ml.in')
| -rw-r--r-- | config-ml.in | 612 |
1 files changed, 612 insertions, 0 deletions
diff --git a/config-ml.in b/config-ml.in new file mode 100644 index 00000000000..57613d90d7e --- /dev/null +++ b/config-ml.in @@ -0,0 +1,612 @@ +# Configure fragment invoked in the post-target section for subdirs +# wanting multilib support. +# +# It is advisable to support a few --enable/--disable options to let the +# user select which libraries s/he really wants. +# +# Subdirectories wishing to use multilib should put the following lines +# in the "post-target" section of configure.in. +# +# if [ "${srcdir}" = "." ] ; then +# if [ "${with_target_subdir}" != "." ] ; then +# . ${with_multisrctop}../../config-ml.in +# else +# . ${with_multisrctop}../config-ml.in +# fi +# else +# . ${srcdir}/../config-ml.in +# fi +# +# See librx/configure.in in the libg++ distribution for an example of how +# to handle autoconf'd libraries. +# +# Things are complicated because 6 separate cases must be handled: +# 2 (native, cross) x 3 (absolute-path, relative-not-dot, dot) = 6. +# +# srcdir=. is special. It must handle make programs that don't handle VPATH. +# To implement this, a symlink tree is built for each library and for each +# multilib subdir. +# +# The build tree is layed out as +# +# ./ +# libg++ +# newlib +# m68020/ +# libg++ +# newlib +# m68881/ +# libg++ +# newlib +# +# The nice feature about this arrangement is that inter-library references +# in the build tree work without having to care where you are. Note that +# inter-library references also work in the source tree because symlink trees +# are built when srcdir=. +# +# Unfortunately, trying to access the libraries in the build tree requires +# the user to manually choose which library to use as GCC won't be able to +# find the right one. This is viewed as the lesser of two evils. +# +# Configure variables: +# ${with_target_subdir} = "." for native, or ${target_alias} for cross. +# Set by top level Makefile. +# ${with_multisrctop} = how many levels of multilibs there are in the source +# tree. It exists to handle the case of configuring in the source tree: +# ${srcdir} is not constant. +# ${with_multisubdir} = name of multilib subdirectory (eg: m68020/m68881). +# +# Makefile variables: +# MULTISRCTOP = number of multilib levels in source tree (+1 if cross) +# (FIXME: note that this is different than ${with_multisrctop}. Check out.). +# MULTIBUILDTOP = number of multilib levels in build tree +# MULTIDIRS = list of multilib subdirs (eg: m68000 m68020 ...) +# (only defined in each library's main Makefile). +# MULTISUBDIR = installed subdirectory name with leading '/' (eg: /m68000) +# (only defined in each multilib subdir). + +# FIXME: Multilib is currently disabled by default for everything other than +# newlib. It is up to each target to turn on multilib support for the other +# libraries as desired. + +# We have to handle being invoked by both Cygnus configure and Autoconf. +# +# Cygnus configure incoming variables: +# srcdir, subdir, target, arguments +# +# Autoconf incoming variables: +# srcdir, target, ac_configure_args +# +# We *could* figure srcdir and target out, but we'd have to do work that +# our caller has already done to figure them out and requiring these two +# seems reasonable. + +if [ -n "${ac_configure_args}" ]; then + Makefile=${ac_file-Makefile} + ml_config_shell=${CONFIG_SHELL-/bin/sh} + ml_arguments="${ac_configure_args}" + ml_realsrcdir=${srcdir} +else + Makefile=${Makefile-Makefile} + ml_config_shell=${config_shell-/bin/sh} + ml_arguments="${arguments}" + if [ -n "${subdir}" -a "${subdir}" != "." ] ; then + ml_realsrcdir=${srcdir}/${subdir} + else + ml_realsrcdir=${srcdir} + fi +fi + +# Scan all the arguments and set all the ones we need. + +for option in ${ml_arguments} +do + case $option in + --*) ;; + -*) option=-$option ;; + esac + + case $option in + --*=*) + optarg=`echo $option | sed -e 's/^[^=]*=//'` + ;; + esac + + case $option in + --disable-*) + enableopt=`echo ${option} | sed 's:^--disable-:enable_:;s:-:_:g'` + eval $enableopt=no + ;; + --enable-*) + case "$option" in + *=*) ;; + *) optarg=yes ;; + esac + enableopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'` + eval $enableopt="$optarg" + ;; + --norecursion | --no*) + ml_norecursion=yes + ;; + --verbose | --v | --verb*) + ml_verbose=--verbose + ;; + --with-*) + case "$option" in + *=*) ;; + *) optarg=yes ;; + esac + withopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'` + eval $withopt="$optarg" + ;; + --without-*) + withopt=`echo ${option} | sed 's:^--::;s:out::;s:-:_:g'` + eval $withopt=no + ;; + esac +done + +# Only do this if --enable-multilib. +if [ "${enable_multilib}" = yes ]; then + +# Compute whether this is the library's top level directory +# (ie: not a multilib subdirectory, and not a subdirectory like libg++/src). +# ${with_multisubdir} tells us we're in the right branch, but we could be +# in a subdir of that. +# ??? The previous version could void this test by separating the process into +# two files: one that only the library's toplevel configure.in ran (to +# configure the multilib subdirs), and another that all configure.in's ran to +# update the Makefile. It seemed reasonable to collapse all multilib support +# into one file, but it does leave us with having to perform this test. +ml_toplevel_p=no +if [ -z "${with_multisubdir}" ]; then + if [ "${srcdir}" = "." ]; then + # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}. + # ${with_target_subdir} = "." for native, otherwise target alias. + if [ "${with_target_subdir}" = "." ]; then + if [ -f ${ml_realsrcdir}/../config-ml.in ]; then + ml_toplevel_p=yes + fi + else + if [ -f ${ml_realsrcdir}/../../config-ml.in ]; then + ml_toplevel_p=yes + fi + fi + else + # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}. + if [ -f ${ml_realsrcdir}/../config-ml.in ]; then + ml_toplevel_p=yes + fi + fi +fi + +# If this is the library's top level directory, set multidirs to the +# multilib subdirs to support. This lives at the top because we need +# `multidirs' set right away. + +if [ "${ml_toplevel_p}" = yes ]; then + +multidirs= +for i in `${CC-gcc} --print-multi-lib 2>/dev/null`; do + dir=`echo $i | sed -e 's/;.*$//'` + if [ "${dir}" = "." ]; then + true + else + if [ -z "${multidirs}" ]; then + multidirs="${dir}" + else + multidirs="${multidirs} ${dir}" + fi + fi +done + +case "${target}" in +arc-*-elf*) + if [ x$enable_biendian != xyes ] + then + old_multidirs=${multidirs} + multidirs="" + for x in ${old_multidirs}; do + case "${x}" in + *be*) : ;; + *) multidirs="${multidirs} ${x}" ;; + esac + done + fi + ;; +m68*-*-*) + if [ x$enable_softfloat = xno ] + then + old_multidirs="${multidirs}" + multidirs="" + for x in ${old_multidirs}; do + case "$x" in + *soft-float* ) : ;; + *) multidirs="${multidirs} ${x}" ;; + esac + done + fi + if [ x$enable_m68881 = xno ] + then + old_multidirs="${multidirs}" + multidirs="" + for x in ${old_multidirs}; do + case "$x" in + *m68881* ) : ;; + *) multidirs="${multidirs} ${x}" ;; + esac + done + fi + if [ x$enable_m68000 = xno ] + then + old_multidirs="${multidirs}" + multidirs="" + for x in ${old_multidirs}; do + case "$x" in + *m68000* ) : ;; + *) multidirs="${multidirs} ${x}" ;; + esac + done + fi + if [ x$enable_m68020 = xno ] + then + old_multidirs="${multidirs}" + multidirs="" + for x in ${old_multidirs}; do + case "$x" in + *m68020* ) : ;; + *) multidirs="${multidirs} ${x}" ;; + esac + done + fi + ;; +mips*-*-*) + if [ x$enable_single_float = xno ] + then + old_multidirs="${multidirs}" + multidirs="" + for x in ${old_multidirs}; do + case "$x" in + *single* ) : ;; + *) multidirs="${multidirs} ${x}" ;; + esac + done + fi + if [ x$enable_biendian = xno ] + then + old_multidirs="${multidirs}" + multidirs="" + for x in ${old_multidirs}; do + case "$x" in + *el* ) : ;; + *eb* ) : ;; + *) multidirs="${multidirs} ${x}" ;; + esac + done + fi + if [ x$enable_softfloat = xno ] + then + old_multidirs="${multidirs}" + multidirs="" + for x in ${old_multidirs}; do + case "$x" in + *soft-float* ) : ;; + *) multidirs="${multidirs} ${x}" ;; + esac + done + fi + ;; +powerpc*-*-* | rs6000*-*-*) + if [ x$enable_softfloat = xno ] + then + old_multidirs="${multidirs}" + multidirs="" + for x in ${old_multidirs}; do + case "$x" in + *soft-float* ) : ;; + *) multidirs="${multidirs} ${x}" ;; + esac + done + fi + if [ x$enable_powercpu = xno ] + then + old_multidirs="${multidirs}" + multidirs="" + for x in ${old_multidirs}; do + case "$x" in + power | */power | */power/* ) : ;; + *) multidirs="${multidirs} ${x}" ;; + esac + done + fi + if [ x$enable_powerpccpu = xno ] + then + old_multidirs="${multidirs}" + multidirs="" + for x in ${old_multidirs}; do + case "$x" in + *powerpc* ) : ;; + *) multidirs="${multidirs} ${x}" ;; + esac + done + fi + if [ x$enable_powerpcos = xno ] + then + old_multidirs="${multidirs}" + multidirs="" + for x in ${old_multidirs}; do + case "$x" in + *mcall-linux* | *mcall-solaris* ) : ;; + *) multidirs="${multidirs} ${x}" ;; + esac + done + fi + if [ x$enable_biendian = xno ] + then + old_multidirs="${multidirs}" + multidirs="" + for x in ${old_multidirs}; do + case "$x" in + *mlittle* | *mbig* ) : ;; + *) multidirs="${multidirs} ${x}" ;; + esac + done + fi + if [ x$enable_sysv = xno ] + then + old_multidirs="${multidirs}" + multidirs="" + for x in ${old_multidirs}; do + case "$x" in + *mcall-sysv* ) : ;; + *) multidirs="${multidirs} ${x}" ;; + esac + done + fi + if [ x$enable_aix = xno ] + then + old_multidirs="${multidirs}" + multidirs="" + for x in ${old_multidirs}; do + case "$x" in + *mcall-aix* ) : ;; + *) multidirs="${multidirs} ${x}" ;; + esac + done + fi + ;; +esac + +# Remove extraneous blanks from multidirs. +# Tests like `if [ -n "$multidirs" ]' require it. +multidirs=`echo "$multidirs" | sed -e 's/^[ ][ ]*//' -e 's/[ ][ ]*$//' -e 's/[ ][ ]*/ /g'` + +# Add code to library's top level makefile to handle building the multilib +# subdirs. + +cat > Multi.tem <<\EOF + +# FIXME: There should be an @-sign in front of the `if'. +# Leave out until this is tested a bit more. +multi-do: + if [ -z "$(MULTIDIRS)" ]; then \ + true; \ + else \ + rootpre=`pwd`/; export rootpre; \ + srcrootpre=`cd $(srcdir); pwd`/; export srcrootpre; \ + lib=`echo $${rootpre} | sed -e 's,^.*/\([^/][^/]*\)/$$,\1,'`; \ + compiler="$(CC)"; \ + for i in `$${compiler} --print-multi-lib 2>/dev/null`; do \ + dir=`echo $$i | sed -e 's/;.*$$//'`; \ + if [ "$${dir}" = "." ]; then \ + true; \ + else \ + if [ -d ../$${dir}/$${lib} ]; then \ + flags=`echo $$i | sed -e 's/^[^;]*;//' -e 's/@/ -/g'`; \ + if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) \ + CFLAGS="$(CFLAGS) $${flags}" \ + CXXFLAGS="$(CXXFLAGS) $${flags}" \ + LIBCFLAGS="$(LIBCFLAGS) $${flags}" \ + LIBCXXFLAGS="$(LIBCXXFLAGS) $${flags}" \ + $(DO)); then \ + true; \ + else \ + exit 1; \ + fi; \ + else true; \ + fi; \ + fi; \ + done; \ + fi + +# FIXME: There should be an @-sign in front of the `if'. +# Leave out until this is tested a bit more. +multi-clean: + if [ -z "$(MULTIDIRS)" ]; then \ + true; \ + else \ + lib=`pwd | sed -e 's,^.*/\([^/][^/]*\)$$,\1,'`; \ + for dir in Makefile $(MULTIDIRS); do \ + if [ -f ../$${dir}/$${lib}/Makefile ]; then \ + if (cd ../$${dir}/$${lib}; $(MAKE) $(FLAGS_TO_PASS) $(DO)); \ + then true; \ + else exit 1; \ + fi; \ + else true; \ + fi; \ + done; \ + fi +EOF + +cat ${Makefile} Multi.tem > Makefile.tem +rm -f ${Makefile} Multi.tem +mv Makefile.tem ${Makefile} + +fi # ${ml_toplevel_p} = yes + +if [ "${ml_verbose}" = --verbose ]; then + echo "Adding multilib support to Makefile in ${ml_realsrcdir}" + if [ "${ml_toplevel_p}" = yes ]; then + echo "multidirs=${multidirs}" + fi + echo "with_multisubdir=${with_multisubdir}" +fi + +if [ "${srcdir}" = "." ]; then + if [ "${with_target_subdir}" != "." ]; then + ml_srcdotdot="../" + else + ml_srcdotdot="" + fi +else + ml_srcdotdot="" +fi + +if [ -z "${with_multisubdir}" ]; then + ml_subdir= + ml_builddotdot= + : # ml_srcdotdot= # already set +else + ml_subdir="/${with_multisubdir}" + # The '[^/][^/]*' appears that way to work around a SunOS sed bug. + ml_builddotdot=`echo ${with_multisubdir} | sed -e 's:[^/][^/]*:..:g'`/ + if [ "$srcdir" = "." ]; then + ml_srcdotdot=${ml_srcdotdot}${ml_builddotdot} + else + : # ml_srcdotdot= # already set + fi +fi + +if [ "${ml_toplevel_p}" = yes ]; then + ml_do='$(MAKE)' + ml_clean='$(MAKE)' +else + ml_do=true + ml_clean=true +fi + +# TOP is used by newlib and should not be used elsewhere for this purpose. +# MULTI{SRC,BUILD}TOP are the proper ones to use. MULTISRCTOP is empty +# when srcdir != builddir. MULTIBUILDTOP is always some number of ../'s. +# FIXME: newlib needs to be updated to use MULTI{SRC,BUILD}TOP so we can +# delete TOP. Newlib may wish to continue to use TOP for its own purposes +# of course. +# MULTIDIRS is non-empty for the cpu top level Makefile (eg: newlib/Makefile) +# and lists the subdirectories to recurse into. +# MULTISUBDIR is non-empty in each cpu subdirectory's Makefile +# (eg: newlib/h8300h/Makefile) and is the installed subdirectory name with +# a leading '/'. +# MULTIDO is used for targets like all, install, and check where +# $(FLAGS_TO_PASS) augmented with the subdir's compiler option is needed. +# MULTICLEAN is used for the *clean targets. +# +# ??? It is possible to merge MULTIDO and MULTICLEAN into one. They are +# currently kept separate because we don't want the *clean targets to require +# the existence of the compiler (which MULTIDO currently requires) and +# therefore we'd have to record the directory options as well as names +# (currently we just record the names and use --print-multi-lib to get the +# options). + +sed -e "s:^TOP[ ]*=[ ]*\([./]*\)[ ]*$:TOP = ${ml_builddotdot}\1:" \ + -e "s:^MULTISRCTOP[ ]*=.*$:MULTISRCTOP = ${ml_srcdotdot}:" \ + -e "s:^MULTIBUILDTOP[ ]*=.*$:MULTIBUILDTOP = ${ml_builddotdot}:" \ + -e "s:^MULTIDIRS[ ]*=.*$:MULTIDIRS = ${multidirs}:" \ + -e "s:^MULTISUBDIR[ ]*=.*$:MULTISUBDIR = ${ml_subdir}:" \ + -e "s:^MULTIDO[ ]*=.*$:MULTIDO = $ml_do:" \ + -e "s:^MULTICLEAN[ ]*=.*$:MULTICLEAN = $ml_clean:" \ + ${Makefile} > Makefile.tem +rm -f ${Makefile} +mv Makefile.tem ${Makefile} + +# If this is the library's top level, configure each multilib subdir. +# This is done at the end because this is the loop that runs configure +# in each multilib subdir and it seemed reasonable to finish updating the +# Makefile before going on to configure the subdirs. + +if [ "${ml_toplevel_p}" = yes ]; then + +# We must freshly configure each subdirectory. This bit of code is +# actually partially stolen from the main configure script. FIXME. + +if [ -n "${multidirs}" ] && [ -z "${ml_norecursion}" ]; then + + if [ "${ml_verbose}" = --verbose ]; then + echo "Running configure in multilib subdirs ${multidirs}" + echo "pwd: `pwd`" + fi + + ml_origdir=`pwd` + ml_libdir=`echo $ml_origdir | sed -e 's,^.*/,,'` + # cd to top-level-build-dir/${with_target_subdir} + cd .. + + for ml_dir in ${multidirs}; do + + if [ "${ml_verbose}" = --verbose ]; then + echo "Running configure in multilib subdir ${ml_dir}" + echo "pwd: `pwd`" + fi + + if [ -d ${ml_dir} ]; then true; else mkdir ${ml_dir}; fi + if [ -d ${ml_dir}/${ml_libdir} ]; then true; else mkdir ${ml_dir}/${ml_libdir}; fi + + # Eg: if ${ml_dir} = m68000/m68881, dotdot = ../../ + dotdot=../`echo ${ml_dir} | sed -e 's|[^/]||g' -e 's|/|../|g'` + + case ${srcdir} in + ".") + echo Building symlink tree in `pwd`/${ml_dir}/${ml_libdir} + if [ "${with_target_subdir}" != "." ]; then + ml_unsubdir="../" + else + ml_unsubdir="" + fi + (cd ${ml_dir}/${ml_libdir}; + ../${dotdot}${ml_unsubdir}symlink-tree ../${dotdot}${ml_unsubdir}${ml_libdir} "") + ml_newsrcdir="." + ml_srcdiroption= + multisrctop=${dotdot} + ;; + *) + case "${srcdir}" in + /*) # absolute path + ml_newsrcdir=${srcdir} + ;; + *) # otherwise relative + ml_newsrcdir=${dotdot}${srcdir} + ;; + esac + ml_srcdiroption="-srcdir=${ml_newsrcdir}" + multisrctop= + ;; + esac + + case "${progname}" in + /*) ml_recprog=${progname} ;; + *) ml_recprog=${dotdot}${progname} ;; + esac + + # FIXME: POPDIR=${PWD=`pwd`} doesn't work here. + ML_POPDIR=`pwd` + cd ${ml_dir}/${ml_libdir} + + if [ -f ${ml_newsrcdir}/configure ]; then + ml_recprog=${ml_newsrcdir}/configure + fi + if eval ${ml_config_shell} ${ml_recprog} \ + --with-multisubdir=${ml_dir} --with-multisrctop=${multisrctop} \ + ${ml_arguments} ${ml_srcdiroption} ; then + true + else + exit 1 + fi + + cd ${ML_POPDIR} + + done + + cd ${ml_origdir} +fi + +fi # ${ml_toplevel_p} = yes +fi # ${enable_multilib} = yes |