| 1 | # Configure fragment invoked in the post-target section for subdirs
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| 2 | # wanting multilib support.
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| 3 | #
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| 4 | # It is advisable to support a few --enable/--disable options to let the
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| 5 | # user select which libraries s/he really wants.
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| 6 | #
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| 7 | # Subdirectories wishing to use multilib should put the following lines
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| 8 | # in the "post-target" section of configure.in.
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| 9 | #
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| 10 | # if [ "${srcdir}" = "." ] ; then
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| 11 | # if [ "${with_target_subdir}" != "." ] ; then
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| 12 | # . ${with_multisrctop}../../config-ml.in
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| 13 | # else
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| 14 | # . ${with_multisrctop}../config-ml.in
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| 15 | # fi
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| 16 | # else
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| 17 | # . ${srcdir}/../config-ml.in
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| 18 | # fi
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| 19 | #
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| 20 | #
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| 21 | # Things are complicated because 6 separate cases must be handled:
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| 22 | # 2 (native, cross) x 3 (absolute-path, relative-not-dot, dot) = 6.
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| 23 | #
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| 24 | # srcdir=. is special. It must handle make programs that don't handle VPATH.
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| 25 | # To implement this, a symlink tree is built for each library and for each
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| 26 | # multilib subdir.
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| 27 | #
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| 28 | # The build tree is layed out as
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| 29 | #
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| 30 | # ./
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| 31 | # newlib
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| 32 | # m68020/
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| 33 | # newlib
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| 34 | # m68881/
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| 35 | # newlib
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| 36 | #
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| 37 | # The nice feature about this arrangement is that inter-library references
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| 38 | # in the build tree work without having to care where you are. Note that
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| 39 | # inter-library references also work in the source tree because symlink trees
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| 40 | # are built when srcdir=.
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| 41 | #
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| 42 | # Unfortunately, trying to access the libraries in the build tree requires
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| 43 | # the user to manually choose which library to use as GCC won't be able to
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| 44 | # find the right one. This is viewed as the lesser of two evils.
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| 45 | #
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| 46 | # Configure variables:
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| 47 | # ${with_target_subdir} = "." for native, or ${target_alias} for cross.
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| 48 | # Set by top level Makefile.
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| 49 | # ${with_multisrctop} = how many levels of multilibs there are in the source
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| 50 | # tree. It exists to handle the case of configuring in the source tree:
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| 51 | # ${srcdir} is not constant.
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| 52 | # ${with_multisubdir} = name of multilib subdirectory (eg: m68020/m68881).
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| 53 | #
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| 54 | # Makefile variables:
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| 55 | # MULTISRCTOP = number of multilib levels in source tree (+1 if cross)
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| 56 | # (FIXME: note that this is different than ${with_multisrctop}. Check out.).
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| 57 | # MULTIBUILDTOP = number of multilib levels in build tree
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| 58 | # MULTIDIRS = list of multilib subdirs (eg: m68000 m68020 ...)
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| 59 | # (only defined in each library's main Makefile).
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| 60 | # MULTISUBDIR = installed subdirectory name with leading '/' (eg: /m68000)
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| 61 | # (only defined in each multilib subdir).
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| 62 |
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| 63 | # FIXME: Multilib is currently disabled by default for everything other than
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| 64 | # newlib. It is up to each target to turn on multilib support for the other
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| 65 | # libraries as desired.
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| 66 |
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| 67 | # Autoconf incoming variables:
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| 68 | # srcdir, host, ac_configure_args
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| 69 | #
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| 70 | # We *could* figure srcdir and host out, but we'd have to do work that
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| 71 | # our caller has already done to figure them out and requiring these two
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| 72 | # seems reasonable.
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| 73 | # Note that `host' in this case is GCC's `target'. Target libraries are
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| 74 | # configured for a particular host.
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| 75 |
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| 76 | Makefile=${ac_file-Makefile}
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| 77 | ml_config_shell=${CONFIG_SHELL-/bin/sh}
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| 78 | ml_arguments="${ac_configure_args}"
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| 79 | ml_realsrcdir=${srcdir}
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| 80 |
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| 81 | # Scan all the arguments and set all the ones we need.
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| 82 |
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| 83 | ml_verbose=--verbose
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| 84 | for option in ${ml_arguments}
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| 85 | do
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| 86 | case $option in
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| 87 | --*) ;;
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| 88 | -*) option=-$option ;;
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| 89 | esac
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| 90 |
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| 91 | case $option in
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| 92 | --*=*)
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| 93 | optarg=`echo $option | sed -e 's/^[^=]*=//'`
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| 94 | ;;
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| 95 | esac
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| 96 |
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| 97 | case $option in
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| 98 | --disable-*)
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| 99 | enableopt=`echo ${option} | sed 's:^--disable-:enable_:;s:-:_:g'`
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| 100 | eval $enableopt=no
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| 101 | ;;
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| 102 | --enable-*)
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| 103 | case "$option" in
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| 104 | *=*) ;;
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| 105 | *) optarg=yes ;;
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| 106 | esac
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| 107 | enableopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
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| 108 | eval $enableopt="$optarg"
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| 109 | ;;
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| 110 | --norecursion | --no*)
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| 111 | ml_norecursion=yes
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| 112 | ;;
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| 113 | --silent | --sil* | --quiet | --q*)
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| 114 | ml_verbose=--silent
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| 115 | ;;
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| 116 | --verbose | --v | --verb*)
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| 117 | ml_verbose=--verbose
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| 118 | ;;
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| 119 | --with-*)
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| 120 | case "$option" in
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| 121 | *=*) ;;
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| 122 | *) optarg=yes ;;
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| 123 | esac
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| 124 | withopt=`echo ${option} | sed 's:^--::;s:=.*$::;s:-:_:g'`
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| 125 | eval $withopt="$optarg"
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| 126 | ;;
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| 127 | --without-*)
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| 128 | withopt=`echo ${option} | sed 's:^--::;s:out::;s:-:_:g'`
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| 129 | eval $withopt=no
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| 130 | ;;
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| 131 | esac
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| 132 | done
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| 133 |
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| 134 | # Only do this if --enable-multilib.
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| 135 | if [ "${enable_multilib}" = yes ]; then
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| 136 |
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| 137 | # Compute whether this is the library's top level directory
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| 138 | # (ie: not a multilib subdirectory, and not a subdirectory like newlib/src).
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| 139 | # ${with_multisubdir} tells us we're in the right branch, but we could be
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| 140 | # in a subdir of that.
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| 141 | # ??? The previous version could void this test by separating the process into
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| 142 | # two files: one that only the library's toplevel configure.in ran (to
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| 143 | # configure the multilib subdirs), and another that all configure.in's ran to
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| 144 | # update the Makefile. It seemed reasonable to collapse all multilib support
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| 145 | # into one file, but it does leave us with having to perform this test.
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| 146 | ml_toplevel_p=no
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| 147 | if [ -z "${with_multisubdir}" ]; then
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| 148 | if [ "${srcdir}" = "." ]; then
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| 149 | # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
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| 150 | # ${with_target_subdir} = "." for native, otherwise target alias.
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| 151 | if [ "${with_target_subdir}" = "." ]; then
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| 152 | if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
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| 153 | ml_toplevel_p=yes
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| 154 | fi
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| 155 | else
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| 156 | if [ -f ${ml_realsrcdir}/../../config-ml.in ]; then
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| 157 | ml_toplevel_p=yes
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| 158 | fi
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| 159 | fi
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| 160 | else
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| 161 | # Use ${ml_realsrcdir} instead of ${srcdir} here to account for ${subdir}.
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| 162 | if [ -f ${ml_realsrcdir}/../config-ml.in ]; then
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| 163 | ml_toplevel_p=yes
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| 164 | fi
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| 165 | fi
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| 166 | fi
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| 167 |
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| 168 | # If this is the library's top level directory, set multidirs to the
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| 169 | # multilib subdirs to support. This lives at the top because we need
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| 170 | # `multidirs' set right away.
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| 171 |
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| 172 | if [ "${ml_toplevel_p}" = yes ]; then
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| 173 |
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| 174 | multidirs=
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| 175 | for i in `${CC-gcc} --print-multi-lib 2>/dev/null`; do
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| 176 | dir=`echo $i | sed -e 's/;.*$//'`
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| 177 | if [ "${dir}" = "." ]; then
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| 178 | true
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| 179 | else
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| 180 | if [ -z "${multidirs}" ]; then
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| 181 | multidirs="${dir}"
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| 182 | else
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| 183 | multidirs="${multidirs} ${dir}"
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| 184 | fi
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| 185 | fi
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| 186 | done
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| 187 |
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| 188 | # Target libraries are configured for the host they run on, so we check
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| 189 | # $host here, not $target.
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| 190 |
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| 191 | case "${host}" in
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| 192 | arc-*-elf*)
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| 193 | if [ x$enable_biendian != xyes ]
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| 194 | then
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| 195 | old_multidirs=${multidirs}
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| 196 | multidirs=""
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| 197 | for x in ${old_multidirs}; do
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| 198 | case "${x}" in
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| 199 | *be*) : ;;
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| 200 | *) multidirs="${multidirs} ${x}" ;;
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| 201 | esac
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| 202 | done
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| 203 | fi
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| 204 | ;;
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| 205 | arm-*-*)
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| 206 | if [ x"$enable_fpu" = xno ]
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| 207 | then
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| 208 | old_multidirs=${multidirs}
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| 209 | multidirs=""
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| 210 | for x in ${old_multidirs}; do
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| 211 | case "${x}" in
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| 212 | *fpu*) : ;;
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| 213 | *) multidirs="${multidirs} ${x}" ;;
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| 214 | esac
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| 215 | done
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| 216 | fi
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| 217 | if [ x"$enable_26bit" = xno ]
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| 218 | then
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| 219 | old_multidirs=${multidirs}
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| 220 | multidirs=""
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| 221 | for x in ${old_multidirs}; do
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| 222 | case "${x}" in
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| 223 | *26bit*) : ;;
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| 224 | *) multidirs="${multidirs} ${x}" ;;
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| 225 | esac
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| 226 | done
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| 227 | fi
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| 228 | if [ x"$enable_underscore" = xno ]
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| 229 | then
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| 230 | old_multidirs=${multidirs}
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| 231 | multidirs=""
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| 232 | for x in ${old_multidirs}; do
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| 233 | case "${x}" in
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| 234 | *under*) : ;;
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| 235 | *) multidirs="${multidirs} ${x}" ;;
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| 236 | esac
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| 237 | done
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| 238 | fi
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| 239 | if [ x"$enable_interwork" = xno ]
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| 240 | then
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| 241 | old_multidirs=${multidirs}
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| 242 | multidirs=""
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| 243 | for x in ${old_multidirs}; do
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| 244 | case "${x}" in
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| 245 | *interwork*) : ;;
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| 246 | *) multidirs="${multidirs} ${x}" ;;
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| 247 | esac
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| 248 | done
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| 249 | fi
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| 250 | if [ x$enable_biendian = xno ]
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| 251 | then
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| 252 | old_multidirs="${multidirs}"
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| 253 | multidirs=""
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| 254 | for x in ${old_multidirs}; do
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| 255 | case "$x" in
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| 256 | *le* ) : ;;
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| 257 | *be* ) : ;;
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| 258 | *) multidirs="${multidirs} ${x}" ;;
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| 259 | esac
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| 260 | done
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| 261 | fi
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| 262 | if [ x"$enable_nofmult" = xno ]
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| 263 | then
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| 264 | old_multidirs="${multidirs}"
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| 265 | multidirs=""
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| 266 | for x in ${old_multidirs}; do
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| 267 | case "$x" in
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| 268 | *nofmult* ) : ;;
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| 269 | *) multidirs="${multidirs} ${x}" ;;
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| 270 | esac
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| 271 | done
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| 272 | fi
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| 273 | ;;
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| 274 | m68*-*-*)
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| 275 | if [ x$enable_softfloat = xno ]
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| 276 | then
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| 277 | old_multidirs="${multidirs}"
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| 278 | multidirs=""
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| 279 | for x in ${old_multidirs}; do
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| 280 | case "$x" in
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| 281 | *soft-float* ) : ;;
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| 282 | *) multidirs="${multidirs} ${x}" ;;
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| 283 | esac
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| 284 | done
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| 285 | fi
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| 286 | if [ x$enable_m68881 = xno ]
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| 287 | then
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| 288 | old_multidirs="${multidirs}"
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| 289 | multidirs=""
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| 290 | for x in ${old_multidirs}; do
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| 291 | case "$x" in
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| 292 | *m68881* ) : ;;
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| 293 | *) multidirs="${multidirs} ${x}" ;;
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| 294 | esac
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| 295 | done
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| 296 | fi
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| 297 | if [ x$enable_m68000 = xno ]
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| 298 | then
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| 299 | old_multidirs="${multidirs}"
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| 300 | multidirs=""
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| 301 | for x in ${old_multidirs}; do
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| 302 | case "$x" in
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| 303 | *m68000* ) : ;;
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| 304 | *) multidirs="${multidirs} ${x}" ;;
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| 305 | esac
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| 306 | done
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| 307 | fi
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| 308 | if [ x$enable_m68020 = xno ]
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| 309 | then
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| 310 | old_multidirs="${multidirs}"
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| 311 | multidirs=""
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| 312 | for x in ${old_multidirs}; do
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| 313 | case "$x" in
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| 314 | *m68020* ) : ;;
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| 315 | *) multidirs="${multidirs} ${x}" ;;
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| 316 | esac
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| 317 | done
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| 318 | fi
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| 319 | ;;
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| 320 | mips*-*-*)
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| 321 | if [ x$enable_single_float = xno ]
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| 322 | then
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| 323 | old_multidirs="${multidirs}"
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| 324 | multidirs=""
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| 325 | for x in ${old_multidirs}; do
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| 326 | case "$x" in
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| 327 | *single* ) : ;;
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| 328 | *) multidirs="${multidirs} ${x}" ;;
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| 329 | esac
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| 330 | done
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| 331 | fi
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| 332 | if [ x$enable_biendian = xno ]
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| 333 | then
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| 334 | old_multidirs="${multidirs}"
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| 335 | multidirs=""
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| 336 | for x in ${old_multidirs}; do
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| 337 | case "$x" in
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| 338 | *el* ) : ;;
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| 339 | *eb* ) : ;;
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| 340 | *) multidirs="${multidirs} ${x}" ;;
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| 341 | esac
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| 342 | done
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| 343 | fi
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| 344 | if [ x$enable_softfloat = xno ]
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|---|
| 345 | then
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|---|
| 346 | old_multidirs="${multidirs}"
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| 347 | multidirs=""
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|---|
| 348 | for x in ${old_multidirs}; do
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| 349 | case "$x" in
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| 350 | *soft-float* ) : ;;
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| 351 | *) multidirs="${multidirs} ${x}" ;;
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