libitm/configure.tgt

   1 # -*- shell-script -*-
   2 #   Copyright (C) 2011-2014 Free Software Foundation, Inc.
   3
   4 # This program is free software; you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 2 of the License, or
   7 # (at your option) any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program; if not, write to the Free Software
  16 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  17
  18 # This is the target specific configuration file.  This is invoked by the
  19 # autoconf generated configure script.  Putting it in a separate shell file
  20 # lets us skip running autoconf when modifying target specific information.
  21
  22 # This file switches on the shell variable ${target}, and sets the
  23 # following shell variables:
  24 #  config_path          An ordered list of directories to search for
  25 #                       sources and headers.  This is relative to the
  26 #                       config subdirectory of the source tree.
  27 #  XCFLAGS              Add extra compile flags to use.
  28 #  XLDFLAGS             Add extra link flags to use.
  29
  30 # Optimize TLS usage by avoiding the overhead of dynamic allocation.
  31 if test "$gcc_cv_have_tls" = yes ; then
  32   case "${target}" in
  33
  34     # For x86, we use slots in the TCB head for most of our TLS.
  35     # The setup of those slots in beginTransaction can afford to
  36     # use the global-dynamic model.
  37     i[456]86-*-linux* | x86_64-*-linux*)
  38         ;;
  39
  40     *-*-linux*)
  41         XCFLAGS="${XCFLAGS} -ftls-model=initial-exec"
  42         ;;
  43   esac
  44 fi
  45
  46 # Map the target cpu to an ARCH sub-directory.  At the same time,
  47 # work out any special compilation flags as necessary.
  48 case "${target_cpu}" in
  49   alpha*)               ARCH=alpha ;;
  50   rs6000 | powerpc*)
  51         XCFLAGS="${XCFLAGS} -mhtm"
  52         ARCH=powerpc
  53         ;;
  54
  55   arm*)         ARCH=arm ;;
  56
  57   i[3456]86)
  58         case " ${CC} ${CFLAGS} " in
  59           *" -m64 "*|*" -mx32 "*)
  60             ;;
  61           *)
  62             if test -z "$with_arch"; then
  63               XCFLAGS="${XCFLAGS} -march=i486 -mtune=${target_cpu}"
  64               XCFLAGS="${XCFLAGS} -fomit-frame-pointer"
  65             fi
  66         esac
  67         XCFLAGS="${XCFLAGS} -mrtm"
  68         ARCH=x86
  69         ;;
  70
  71   sh*)          ARCH=sh ;;
  72
  73   sparc)
  74         case " ${CC} ${CFLAGS} " in
  75           *" -m64 "*)
  76             ;;
  77           *)
  78             if test -z "$with_cpu"; then
  79               XCFLAGS="${XCFLAGS} -mcpu=v9"
  80             fi
  81         esac
  82         ARCH=sparc
  83         ;;
  84
  85   sparc64|sparcv9)
  86         case " ${CC} ${CFLAGS} " in
  87           *" -m32 "*)
  88             XCFLAGS="${XCFLAGS} -mcpu=v9"
  89             ;;
  90           *" -m64 "*)
  91             ;;
  92           *)
  93             if test "x$with_cpu" = xv8; then
  94               XCFLAGS="${XCFLAGS} -mcpu=v9"
  95             fi
  96             ;;
  97         esac
  98         ARCH=sparc
  99         ;;
 100
 101   x86_64)
 102         case " ${CC} ${CFLAGS} " in
 103           *" -m32 "*)
 104             XCFLAGS="${XCFLAGS} -march=i486 -mtune=i686"
 105             XCFLAGS="${XCFLAGS} -fomit-frame-pointer"
 106             ;;
 107         esac
 108         XCFLAGS="${XCFLAGS} -mrtm"
 109         ARCH=x86
 110         ;;
 111   s390|s390x)
 112         XCFLAGS="${XCFLAGS} -mzarch -mhtm"
 113         ARCH=s390
 114         ;;
 115
 116   *)
 117         ARCH="${target_cpu}"
 118         ;;
 119 esac
 120
 121 # For the benefit of top-level configure, determine if the cpu is supported.
 122 test -d ${srcdir}/config/$ARCH || UNSUPPORTED=1
 123
 124 # Since we require POSIX threads, assume a POSIX system by default.
 125 config_path="$ARCH posix generic"
 126
 127 # Other system configury
 128 case "${target}" in
 129   *-*-linux*)
 130         if test "$enable_linux_futex" = yes; then
 131           config_path="linux/$ARCH linux $config_path"
 132         fi
 133         ;;
 134
 135   powerpc*-*-aix* | rs6000-*-aix*)
 136         # The system ought to be supported, but sjlj.S has not been ported.
 137         UNSUPPORTED=1
 138         ;;
 139
 140   *-*-gnu* | *-*-k*bsd*-gnu \
 141   | *-*-netbsd* | *-*-freebsd* | *-*-openbsd* \
 142   | *-*-solaris2* | *-*-sysv4* | *-*-hpux11* \
 143   | *-*-darwin* | *-*-aix*)
 144         # POSIX system.  The OS is supported.
 145         ;;
 146
 147   *)    # Non-POSIX, or embedded system
 148         UNSUPPORTED=1
 149         ;;
 150 esac