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# This is the target specific configuration file.  This is invoked by the

# autoconf generated configure script.  Putting it in a separate shell file

# lets us skip running autoconf when modifying target specific information.

# This file switches on the shell variable ${target}, and sets the

# following shell variables:

#  config_path          An ordered list of directories to search for

#                       sources and headers.  This is relative to the

#                       config subdirectory of the source tree.

#  XCFLAGS              Add extra compile flags to use.

#  XLDFLAGS             Add extra link flags to use.

# Optimize TLS usage by avoiding the overhead of dynamic allocation.

if test $gcc_cv_have_tls = yes ; then

  case "${target}" in

    *-*-linux*)

        XCFLAGS="${XCFLAGS} -ftls-model=initial-exec"

        ;;

  esac

fi

# Since we require POSIX threads, assume a POSIX system by default.

config_path="posix"

# Check for futex enabled all at once.

if test $enable_linux_futex = yes; then

  case "${target}" in

    alpha*-*-linux*)

        config_path="linux/alpha linux posix"

        ;;

    arm*-*-linux*)

        config_path="linux posix"

        ;;

    ia64*-*-linux*)

        config_path="linux/ia64 linux posix"

        ;;

    mips*-*-linux*)

        config_path="linux/mips linux posix"

        ;;

    powerpc*-*-linux*)

        config_path="linux/powerpc linux posix"

        ;;

    s390*-*-linux*)

        config_path="linux/s390 linux posix"

        ;;

    tile*-*-linux*)

        config_path="linux/tile linux posix"

        ;;

    # Note that bare i386 is not included here.  We need cmpxchg.

    i[456]86-*-linux*)

        config_path="linux/x86 linux posix"

        case " ${CC} ${CFLAGS} " in

          *" -m64 "*)

            ;;

          *)

            if test -z "$with_arch"; then

              XCFLAGS="${XCFLAGS} -march=i486 -mtune=${target_cpu}"

            fi

        esac

        ;;

    # Similar jiggery-pokery for x86_64 multilibs, except here we

    # can't rely on the --with-arch configure option, since that

    # applies to the 64-bit side.

    x86_64-*-linux*)

        config_path="linux/x86 linux posix"

        case " ${CC} ${CFLAGS} " in

          *" -m32 "*)

            XCFLAGS="${XCFLAGS} -march=i486 -mtune=i686"

            ;;

        esac

        ;;

    # Note that sparcv7 and sparcv8 is not included here.  We need cas.

    sparcv9-*-linux* | sparc64-*-linux*)

        echo "int i;" > conftestx.c

        if ${CC} ${CFLAGS} -c -o conftestx.o conftestx.c > /dev/null 2>&1; then

          config_path="linux/sparc linux posix"

          case "`/usr/bin/file conftestx.o`" in

            *32-bit*)

              case " ${CC} ${CFLAGS}" in

                *" -mcpu=ultrasparc"*)

                  ;;

                *)

                  XCFLAGS="${XCFLAGS} -mcpu=v9"

                  ;;

              esac

              ;;

          esac

        fi

        rm -f conftestx.c conftestx.o

        ;;

  esac

fi

# Other system configury

case "${target}" in

  *-*-hpux*)

        case "${target}" in

          *-*-hpux11*)

             # HPUX v11.x requires -lrt to resolve sem_init in libgomp.la

             XLDFLAGS="${XLDFLAGS} -lrt"

             ;;

        esac

        case "${target}" in

          hppa[12]*-*-hpux*)

            # PA 32 HP-UX needs -frandom-seed for bootstrap compare.

            XCFLAGS="${XCFLAGS} -frandom-seed=fixed-seed"

            ;;

        esac

        ;;

  *-*-mingw32*)

        config_path="mingw32 posix"

        ;;

  *-*-darwin*)

        config_path="bsd posix"

        ;;

  *-*-freebsd*)

        # Need to link with -lpthread so libgomp.so is self-contained.

        XLDFLAGS="${XLDFLAGS} -lpthread"

        ;;

  alpha*-dec-osf*)

        # Use Tru64 UNIX-specific sem.h version.

        config_path="osf posix"

        ;;

  mips-sgi-irix6*)

        # Need to link with -lpthread so libgomp.so is self-contained.

        XLDFLAGS="${XLDFLAGS} -lpthread"

        ;;

  *)

        ;;

esac