* configure.host: Set RPATH_ENVVAR.

[deliverable/binutils-gdb.git] / bfd / configure.host

# This file is a shell script that overrides some of the tools and
# flags used on a host specific basis.

# Since the "bfd/hosts" directory is shared by the bfd, opcodes, and
# binutils directories (at least), the index to it is also shared.
# This is that index.  Each configure.in file should source this file
# in its per-host part.

# This sets the following shell variables:
#  CC			compiler to use (only if needed and not already set)
#  CFLAGS		override CFLAGS (only if needed and not already set)
#  LDFLAGS		override LDFLAGS (only if needed and not already set)
#  AR			archiver to use (only if needed and not already set)
#  RANLIB		ranlib to use (only if needed and not already set)
#  HDEFINES		host specific compiler options
#  host64		set to true if this is a 64 bit host
#  HOST_64BIT_TYPE	host 64 bit type
#  SHLIB_CC		compiler to use when building shared library
#  SHLIB_CFLAGS		flags to use when building shared library
#  PICFLAG		may be set to flag to use to compile PIC
#  SHLINK		may be set to the name to link the shared library to
#  ALLLIBS		may be set to libraries to build
#  HLDFLAGS		LDFLAGS specific to the host
#  RPATH_ENVVAR		environment variable used to find shared libraries

HDEFINES=
host64=false
HOST_64BIT_TYPE=

case "${host}" in
# WHEN ADDING ENTRIES TO THIS MATRIX:
#  Make sure that the left side always has two dashes.  Otherwise you
#  can get spurious matches.  Even for unambiguous cases, do this as a
#  convention, else the table becomes a real mess to understand and maintain.
#
# Note that these entries cannot be fully alphabetical.  Don't try.
# The order of matching is critical when multiple lines could match.

alpha-*-*)		host64=true; HOST_64BIT_TYPE=long ;;

a29k-*-*)		CC=${CC-u3cc}; AR=${AR-u3ar} ;;

hppa*-*-hpux*)		HDEFINES=-DHOST_HPPAHPUX ;;
hppa*-*-hiux*)		HDEFINES=-DHOST_HPPAHPUX ;;
hppa*-*-bsd*)		HDEFINES=-DHOST_HPPABSD ;;
hppa*-*-osf*)		HDEFINES=-DHOST_HPPAOSF ;;

i[345]86-sequent-bsd*)	HDEFINES=-Dshared=genshared ;;
i[345]86-sequent-sysv4*) ;;
i[345]86-sequent-sysv*)	HDEFINES=-Dshared=genshared ;;
i[345]86-ncr*-sysv4*)	CC=${CC-/usr/ccs/ATT/cc}
			test -z "$CFLAGS" && CFLAGS=" "
			;;
i[345]86-*-go32*)	test -z "$CC" && CC="i386-go32-gcc -fno-omit-frame-pointer -O2 -Wl,-S"
			AR=${AR-i386-go32-ar}
			RANLIB=${RANLIB-i386-go32-ranlib}
			;;
i[345]86-*-win32)	test -z "$CC" && CC="i386-win32-gcc -O2"
			AR=${AR-i386-win32-ar}
			RANLIB=${RANLIB-i386-win32-ranlib}
			;;

mips-dec-netbsd*)	;;
mips-dec-*)		HDEFINES="-G 4"	;;
mips-sgi-irix3*)	HDEFINES="-G 4"
			test -z "$LDFLAGS" && LDFLAGS=-lmalloc
			;;
mips-sgi-irix4*)	HDEFINES="-G 4"
			test -z "$LDFLAGS" && LDFLAGS=-lmalloc
			;;
mips-*-sysv4*)		;;
mips-*-sysv*)		HDEFINES="-G 4" ;;
mips-*-riscos*)		HDEFINES="-G 4" ;;

m68*-apollo*-sysv*)	# sef@cygnus.com says this is how to compile
			# on an apollo in the SysV environment.
			test -z "$CC" && CC="cc -A nansi -A cpu,3000 -A runtype,any -A systype,any -DSHORT_ENUM_BUG -DUSG -U__STDC__ -Dm68000=mc68000"
			;;
m68*-hp-hpux*)		HDEFINES=-DHOST_HP300HPUX ;;

m88*-*-dgux*)		test -z "$CC" && CC="gcc -Wall -ansi -D__using_DGUX"
			;;

romp-*-*)		# hc/pcc just can't cut it
			CC=${CC-gcc}
			;;

rs6000-*-aix4)		HDEFINES=-DHOST_AIX ;;
rs6000-*-*)		HDEFINES=-DHOST_AIX ;;
powerpc-*-aix4*)	HDEFINES=-DHOST_AIX ;;
powerpc-*-aix*)		HDEFINES=-DHOST_AIX ;;

esac

# If we are configuring with --enable-shared, adjust the shared
# library support based on the host.  This support must work for both
# the BFD and the opcodes libraries.
HLDFLAGS=
RPATH_ENVVAR=LD_LIBRARY_PATH
SHLIB_CC='$(CC)'
SHLIB_CFLAGS='-shared'
if [ "${shared}" = "true" ]; then
  case "${host}" in
  hppa*-*-*)		picfrag=../config/mh-papic ;;
  i[3456]86-*-*)	picfrag=../config/mh-x86pic ;;
  *-*-*)		picfrag=../config/mh-${host_cpu}pic ;;
  esac
  if [ -f "${picfrag}" ]; then
    pic=`sed -n -e 's/^PICFLAG[ 	]*=[ 	]*\(.*\)$/\1/p' ${picfrag}`
    if [ -n "${pic}" ]; then
      PICFLAG=${pic}
    fi
  fi

  case "${host}" in
  *-dec-osf*)
    # -fpic is not needed on the Alpha.
    PICFLAG=
    ;;
  *-*-hpux*)
    # HP/UX uses .sl for shared libraries.
    SHLINK=`echo ${SHLINK} | sed -e 's/so$/sl/'`
    SHLIB_CFLAGS='-shared $(PICFLAG)'
    HLDFLAGS='-Wl,+s,+b,$(libdir)'
    RPATH_ENVVAR=SHLIB_PATH
    ;;
  *-*-irix5*)
    # -fpic is not needed on Irix 5.
    PICFLAG=
    SHLIB_CFLAGS='-shared -Wl,-soname,$(SONAME)'
    HLDFLAGS='-Wl,-rpath,$(libdir)'
    ;;
  *-*-linux*aout*)
    ;;
  *-*-linux*)
    SHLIB_CFLAGS='-shared -Wl,-soname,$(SONAME)'
    HLDFLAGS='-Wl,-rpath,$(libdir)'
    ;;
  *-*-sysv4* | *-*-solaris*)
    SHLIB_CFLAGS='-shared -h $(SONAME)'
    HLDFLAGS='-R $(libdir)'
    ;;
  *-*-sunos*)
    # Build a libTARGET-bfd.so.VERSION symlink in the object directory.
    ALLLIBS=`echo ${ALLLIBS} | sed -e 's/\$(SHLINK)/stamp-tshlink/'`
    ;;
  esac
fi

# On SunOS, if the linker supports the -rpath option, use it to
# prevent ../bfd and ../opcodes from being included in the run time
# search path.
case "${host}" in
  *-*-sunos*)
    echo 'main () { }' > conftest.c
    ${CC-gcc} -o conftest -Wl,-rpath= conftest.c >/dev/null 2>conftest.t
    if grep 'unrecognized' conftest.t >/dev/null 2>&1; then
      :
    elif grep 'No such file' conftest.t >/dev/null 2>&1; then
      :
    elif [ "${shared}" = "true" ]; then
      HLDFLAGS='-Wl,-rpath=$(libdir)'
    else
      HLDFLAGS='-Wl,-rpath='
    fi
    rm -f conftest.t conftest.c conftest
    ;;
esac