libgomp/configure.tgt

   1 # This is the target specific configuration file.  This is invoked by the
   2 # autoconf generated configure script.  Putting it in a separate shell file
   3 # lets us skip running autoconf when modifying target specific information.
   4
   5 # This file switches on the shell variable ${target}, and sets the
   6 # following shell variables:
   7 #  config_path          An ordered list of directories to search for
   8 #                       sources and headers.  This is relative to the
   9 #                       config subdirectory of the source tree.
  10 #  XCFLAGS              Add extra compile flags to use.
  11 #  XLDFLAGS             Add extra link flags to use.
  12
  13 # Optimize TLS usage by avoiding the overhead of dynamic allocation.
  14 if test $gcc_cv_have_tls = yes ; then
  15   case "${target}" in
  16
  17     *-*-k*bsd*-gnu*)
  18         ;;
  19
  20     *-*-linux* | *-*-gnu*)
  21         XCFLAGS="${XCFLAGS} -ftls-model=initial-exec -DUSING_INITIAL_EXEC_TLS"
  22         ;;
  23
  24     *-*-rtems*)
  25         XCFLAGS="${XCFLAGS} -ftls-model=local-exec"
  26         ;;
  27   esac
  28 fi
  29
  30 # Since we require POSIX threads, assume a POSIX system by default.
  31 config_path="posix"
  32
  33 # Check for futex enabled all at once.
  34 if test x$enable_linux_futex = xyes; then
  35   case "${target}" in
  36
  37     aarch64*-*-linux*)
  38         config_path="linux posix"
  39         ;;
  40
  41     alpha*-*-linux*)
  42         config_path="linux/alpha linux posix"
  43         ;;
  44
  45     arm*-*-linux*)
  46         config_path="linux posix"
  47         ;;
  48
  49     ia64*-*-linux*)
  50         config_path="linux/ia64 linux posix"
  51         ;;
  52
  53     mips*-*-linux*)
  54         config_path="linux/mips linux posix"
  55         ;;
  56
  57     powerpc*-*-linux*)
  58         config_path="linux/powerpc linux posix"
  59         ;;
  60
  61     s390*-*-linux*)
  62         config_path="linux/s390 linux posix"
  63         ;;
  64
  65     tile*-*-linux*)
  66         config_path="linux/tile linux posix"
  67         ;;
  68
  69     # Note that bare i386 is not included here.  We need cmpxchg.
  70     i[456]86-*-linux*)
  71         config_path="linux/x86 linux posix"
  72         case " ${CC} ${CFLAGS} " in
  73           *" -m64 "*|*" -mx32 "*)
  74             ;;
  75           *)
  76             if test -z "$with_arch"; then
  77               XCFLAGS="${XCFLAGS} -march=i486 -mtune=${target_cpu}"
  78             fi
  79         esac
  80         ;;
  81
  82     # Similar jiggery-pokery for x86_64 multilibs, except here we
  83     # can't rely on the --with-arch configure option, since that
  84     # applies to the 64-bit side.
  85     x86_64-*-linux*)
  86         config_path="linux/x86 linux posix"
  87         case " ${CC} ${CFLAGS} " in
  88           *" -m32 "*)
  89             XCFLAGS="${XCFLAGS} -march=i486 -mtune=generic"
  90             ;;
  91         esac
  92         ;;
  93
  94     # Note that sparcv7 and sparcv8 is not included here.  We need cas.
  95     sparcv9-*-linux* | sparc64-*-linux*)
  96         echo "int i;" > conftestx.c
  97         if ${CC} ${CFLAGS} -c -o conftestx.o conftestx.c > /dev/null 2>&1; then
  98           config_path="linux/sparc linux posix"
  99           case "`/usr/bin/file conftestx.o`" in
 100             *32-bit*)
 101               case " ${CC} ${CFLAGS}" in
 102                 *" -mcpu=ultrasparc"*)
 103                   ;;
 104                 *)
 105                   XCFLAGS="${XCFLAGS} -mcpu=v9"
 106                   ;;
 107               esac
 108               ;;
 109           esac
 110         fi
 111         rm -f conftestx.c conftestx.o
 112         ;;
 113   esac
 114 fi
 115
 116 # Other system configury
 117 case "${target}" in
 118
 119   *-*-hpux*)
 120         config_path="hpux posix"
 121         case "${target}" in
 122           *-*-hpux11*)
 123              # HPUX v11.x requires -lrt to resolve sem_init in libgomp.la
 124              XLDFLAGS="${XLDFLAGS} -lrt"
 125              ;;
 126         esac
 127         case "${target}" in
 128           hppa[12]*-*-hpux*)
 129             # PA 32 HP-UX needs -frandom-seed for bootstrap compare.
 130             XCFLAGS="${XCFLAGS} -frandom-seed=fixed-seed"
 131             ;;
 132         esac
 133         ;;
 134
 135   *-*-mingw32*)
 136         config_path="mingw32 posix"
 137         ;;
 138
 139   *-*-darwin*)
 140         config_path="bsd darwin posix"
 141         ;;
 142
 143   *-*-freebsd*)
 144         # Need to link with -lpthread so libgomp.so is self-contained.
 145         XLDFLAGS="${XLDFLAGS} -lpthread"
 146         ;;
 147
 148   *-*-aix*)
 149         config_path="posix"
 150         # Need to link with -lpthread so libgomp.so is self-contained.
 151         XLDFLAGS="${XLDFLAGS} -lpthread"
 152         # AIX needs -frandom-seed for bootstrap compare.
 153         XCFLAGS="${XCFLAGS} -frandom-seed=\$@"
 154         ;;
 155
 156   nvptx*-*-*)
 157         config_path="nvptx"
 158         ;;
 159
 160   *-*-rtems*)
 161         # Use self-contained synchronization objects if provided by Newlib
 162         if test "x$ac_cv_type_struct__Mutex_Control" = xyes ; then
 163             config_path="rtems posix"
 164         fi
 165         ;;
 166
 167   *)
 168         ;;
 169
 170 esac