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"
  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     aarch64*-*-linux*)
  34         config_path="linux posix"
  35         ;;
  36
  37     alpha*-*-linux*)
  38         config_path="linux/alpha linux posix"
  39         ;;
  40
  41     arm*-*-linux*)
  42         config_path="linux posix"
  43         ;;
  44
  45     ia64*-*-linux*)
  46         config_path="linux/ia64 linux posix"
  47         ;;
  48
  49     mips*-*-linux*)
  50         config_path="linux/mips linux posix"
  51         ;;
  52
  53     powerpc*-*-linux*)
  54         config_path="linux/powerpc linux posix"
  55         ;;
  56
  57     s390*-*-linux*)
  58         config_path="linux/s390 linux posix"
  59         ;;
  60
  61     tile*-*-linux*)
  62         config_path="linux/tile linux posix"
  63         ;;
  64
  65     # Note that bare i386 is not included here.  We need cmpxchg.
  66     i[456]86-*-linux*)
  67         config_path="linux/x86 linux posix"
  68         case " ${CC} ${CFLAGS} " in
  69           *" -m64 "*|*" -mx32 "*)
  70             ;;
  71           *)
  72             if test -z "$with_arch"; then
  73               XCFLAGS="${XCFLAGS} -march=i486 -mtune=${target_cpu}"
  74             fi
  75         esac
  76         ;;
  77
  78     # Similar jiggery-pokery for x86_64 multilibs, except here we
  79     # can't rely on the --with-arch configure option, since that
  80     # applies to the 64-bit side.
  81     x86_64-*-linux*)
  82         config_path="linux/x86 linux posix"
  83         case " ${CC} ${CFLAGS} " in
  84           *" -m32 "*)
  85             XCFLAGS="${XCFLAGS} -march=i486 -mtune=i686"
  86             ;;
  87         esac
  88         ;;
  89
  90     # Note that sparcv7 and sparcv8 is not included here.  We need cas.
  91     sparcv9-*-linux* | sparc64-*-linux*)
  92         echo "int i;" > conftestx.c
  93         if ${CC} ${CFLAGS} -c -o conftestx.o conftestx.c > /dev/null 2>&1; then
  94           config_path="linux/sparc linux posix"
  95           case "`/usr/bin/file conftestx.o`" in
  96             *32-bit*)
  97               case " ${CC} ${CFLAGS}" in
  98                 *" -mcpu=ultrasparc"*)
  99                   ;;
 100                 *)
 101                   XCFLAGS="${XCFLAGS} -mcpu=v9"
 102                   ;;
 103               esac
 104               ;;
 105           esac
 106         fi
 107         rm -f conftestx.c conftestx.o
 108         ;;
 109   esac
 110 fi
 111
 112 # Other system configury
 113 case "${target}" in
 114
 115   *-*-hpux*)
 116         case "${target}" in
 117           *-*-hpux11*)
 118              # HPUX v11.x requires -lrt to resolve sem_init in libgomp.la
 119              XLDFLAGS="${XLDFLAGS} -lrt"
 120              ;;
 121         esac
 122         case "${target}" in
 123           hppa[12]*-*-hpux*)
 124             # PA 32 HP-UX needs -frandom-seed for bootstrap compare.
 125             XCFLAGS="${XCFLAGS} -frandom-seed=fixed-seed"
 126             ;;
 127         esac
 128         ;;
 129
 130   *-*-mingw32*)
 131         config_path="mingw32 posix"
 132         ;;
 133
 134   *-*-darwin*)
 135         config_path="bsd posix"
 136         ;;
 137
 138   *-*-freebsd*)
 139         # Need to link with -lpthread so libgomp.so is self-contained.
 140         XLDFLAGS="${XLDFLAGS} -lpthread"
 141         ;;
 142
 143   *)
 144         ;;
 145
 146 esac