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