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 # This does require that the library be present during process
  15 # startup, so mark the library as not to be dlopened.
  16 if test $have_tls = yes ; then
  17   case "${target}" in
  18
  19     *-*-linux*)
  20         XCFLAGS="${XCFLAGS} -ftls-model=initial-exec"
  21         XLDFLAGS="${XLDFLAGS} -Wl,-z,nodlopen"
  22         ;;
  23   esac
  24 fi
  25
  26 # Since we require POSIX threads, assume a POSIX system by default.
  27 config_path="posix"
  28
  29 # Check for futex enabled all at once.
  30 if test $enable_linux_futex = yes; then
  31   case "${target}" in
  32
  33     alpha*-*-linux*)
  34         config_path="linux/alpha linux posix"
  35         ;;
  36
  37     ia64*-*-linux*)
  38         config_path="linux/ia64 linux posix"
  39         ;;
  40
  41     powerpc*-*-linux*)
  42         config_path="linux/powerpc linux posix"
  43         ;;
  44
  45     s390*-*-linux*)
  46         config_path="linux/s390 linux posix"
  47         ;;
  48
  49     # Note that bare i386 is not included here.  We need cmpxchg.
  50     i[456]86-*-linux*)
  51         config_path="linux/x86 linux posix"
  52         if test -z "$with_arch"; then
  53           XCFLAGS="${XCFLAGS} -march=i486 -mtune=${target_cpu}"
  54         fi
  55         ;;
  56
  57     # Similar jiggery-pokery for x86_64 multilibs, except here we
  58     # can't rely on the --with-arch configure option, since that
  59     # applies to the 64-bit side.
  60     x86_64-*-linux*)
  61         config_path="linux/x86 linux posix"
  62         case " ${CC} ${CFLAGS} " in
  63           *" -m32 "*)
  64             XCFLAGS="${XCFLAGS} -march=i486 -mtune=i686"
  65             ;;
  66         esac
  67         ;;
  68
  69     # Note that sparcv7 and sparcv8 is not included here.  We need cas.
  70     sparcv9-*-linux* | sparc64-*-linux*)
  71         echo "int i;" > conftestx.c
  72         if ${CC} ${CFLAGS} -c -o conftestx.o conftestx.c > /dev/null 2>&1; then
  73           config_path="linux/sparc linux posix"
  74           case "`/usr/bin/file conftestx.o`" in
  75             *32-bit*)
  76               case " ${CC} ${CFLAGS}" in
  77                 *" -mcpu=ultrasparc"*)
  78                   ;;
  79                 *)
  80                   XCFLAGS="${XCFLAGS} -mcpu=v9"
  81                   ;;
  82               esac
  83               ;;
  84           esac
  85         fi
  86         rm -f conftestx.c conftestx.o
  87         ;;
  88   esac
  89 fi
  90
  91 # Other system configury
  92 case "${target}" in
  93
  94   *-*-hpux11*)
  95         # HPUX v11.x requires -lrt to resolve sem_init in libgomp.la
  96         XLDFLAGS="${XLDFLAGS} -lrt"
  97         ;;
  98
  99   *-*-mingw32*)
 100         config_path="mingw32 posix"
 101         ;;
 102
 103   *-*-solaris2.[56]*)
 104         config_path="posix95 posix"
 105         XLDFLAGS="${XLDFLAGS} -lposix4"
 106         ;;
 107
 108   *)
 109         ;;
 110
 111 esac