#
# Set up some defaults.
#
STLIBEXT=.a
# Default to being unable to build shared libraries.
SHLIBEXT=.so-nobuild
SHLIBVEXT=.so.v-nobuild
SHLIBSEXT=.so.s-nobuild
# Most systems support profiled libraries.
PFLIBEXT=_p.a
# Most systems install shared libs as mode 644, etc. while hpux wants 755
INSTALL_SHLIB='$(INSTALL_DATA)'

STOBJEXT=.o
SHOBJEXT=.so
PFOBJEXT=.po
# Default for systems w/o shared libraries
CC_LINK_STATIC='$(CC) $(PROG_LIBPATH) $(CFLAGS) $(LDFLAGS)'

# Set up architecture-specific variables.
case $krb5_cv_host in
alpha*-dec-osf*)
	SHLIBVEXT='.so.$(LIBMAJOR).$(LIBMINOR)'
	SHLIBSEXT='.so.$(LIBMAJOR)'
	SHLIBEXT=.so
	# Alpha OSF/1 doesn't need separate PIC objects
	SHOBJEXT=.o
	LDCOMBINE='ld -shared -expect_unresolved \* -update_registry $(BUILDTOP)/so_locations -soname lib$(LIB)$(SHLIBSEXT)'
	SHLIB_EXPFLAGS='-rpath $(SHLIB_RDIRS) $(SHLIB_DIRS) $(SHLIB_EXPLIBS)'
	PROFFLAGS=-pg
	RPATH_FLAG='-Wl,-rpath -Wl,'
	CC_LINK_SHARED='$(CC) $(PROG_LIBPATH) $(RPATH_FLAG)$(PROG_RPATH) $(CFLAGS) $(LDFLAGS)'
	if test "$krb5_cv_prog_gcc" = yes; then
		# Really should check for gnu ld vs system ld, too.
		CC_LINK_STATIC='$(CC) $(PROG_LIBPATH) $(CFLAGS) $(LDFLAGS)'
	else
		# Need -oldstyle_liblookup to avoid picking up shared libs from
		# other builds.  OSF/1 / Tru64 ld programs look through the entire
		# library path for shared libs prior to looking through the
		# entire library path for static libs.
		CC_LINK_STATIC='$(CC) $(PROG_LIBPATH) -Wl,-oldstyle_liblookup $(CFLAGS) $(LDFLAGS)'
	fi
	# _RLD_ROOT hack needed to repoint "root" directory for purposes
	# of searching for shared libs, since RPATHs take precedence over
	# LD_LIBRARY_PATH.
	RUN_ENV='LD_LIBRARY_PATH=`echo $(PROG_LIBPATH) | sed -e "s/-L//g" -e "s/ /:/g"`$${LD_LIBRARY_PATH+:$$LD_LIBRARY_PATH}; export LD_LIBRARY_PATH; _RLD_ROOT=$(FAKEDEST):$${_RLD_ROOT+$$_RLD_ROOT}$${_RLD_ROOT-/}; export _RLD_ROOT;'
	;;

# HPUX *seems* to work under 10.20.
# 
# Note: "-Wl,+s" when building executables enables the use of the
# SHLIB_PATH environment variable for finding shared libraries 
# in non-standard directories.  If a non-standard search-path for
#  shared libraries is compiled into the executable (using 
# -Wl,+b,$KRB5_SHLIBDIR), then the order of "-Wl,+b,..." and "-Wl,+s" 
# on the commandline of the linker will determine which path
# (compiled-in or SHLIB_PATH) will be searched first.
#
*-*-hpux*)
	if test "$krb5_cv_prog_gcc" = yes; then
		PICFLAGS=-fPIC
	else
		PICFLAGS=+z
	fi
	INSTALL_SHLIB='$(INSTALL)'
	SHLIBEXT=.sl
	SHLIBVEXT='.$(LIBMAJOR).$(LIBMINOR)'
	SHLIBSEXT='.$(LIBMAJOR)'
	RPATH_FLAG='-Wl,+b,'
	if test "$krb5_cv_prog_gcc" = yes; then
		SHLIB_EXPFLAGS='-Wl,+s -Wl,+b,$(SHLIB_RDIRS) $(SHLIB_DIRS) $(SHLIB_EXPLIBS)'
		LDCOMBINE='gcc -fPIC -shared -Wl,+h,lib$(LIB)$(SHLIBSEXT)'
	else
		SHLIB_EXPFLAGS='+s +b $(SHLIB_RDIRS) $(SHLIB_DIRS) $(SHLIB_EXPLIBS)'
		LDCOMBINE='ld -b +h lib$(LIB)$(SHLIBSEXT)'
	fi
	CC_LINK_SHARED='$(CC) $(PROG_LIBPATH) -Wl,+s $(RPATH_FLAG)$(PROG_RPATH) $(CFLAGS) $(LDFLAGS)'
	CC_LINK_STATIC='$(CC) $(PROG_LIBPATH) $(CFLAGS) $(LDFLAGS)'
	RUN_ENV='SHLIB_PATH=`echo $(PROG_LIBPATH) | sed -e "s/-L//g" -e "s/ /:/g"`; export SHLIB_PATH;'
	;;

mips-sgi-irix6.3)	# This is a Kludge; see below
	SHLIBVEXT='.so.$(LIBMAJOR).$(LIBMINOR)'
	SHLIBSEXT='.so.$(LIBMAJOR)'
	SHLIBEXT=.so
	SHOBJEXT=.o
	# Kludge follows: (gcc makes n32 object files but ld expects o32, so we reeducate ld)
	if test "$krb5_cv_prog_gcc" = yes; then
		LDCOMBINE='ld -n32 -shared -ignore_unresolved -update_registry $(BUILDTOP)/so_locations -soname lib$(LIB)$(SHLIBSEXT)'
	else
		LDCOMBINE='ld -shared -ignore_unresolved -update_registry $(BUILDTOP)/so_locations -soname lib$(LIB)$(SHLIBSEXT)'
	fi
	SHLIB_EXPFLAGS='-rpath $(SHLIB_RDIRS) $(SHLIB_DIRS) $(SHLIB_EXPLIBS)'
	# no gprof for Irix...
	PROFFLAGS=-p
	RPATH_FLAG='-Wl,-rpath -Wl,'
	CC_LINK_SHARED='$(CC) $(PROG_LIBPATH) $(RPATH_FLAG)$(PROG_RPATH) $(CFLAGS) $(LDFLAGS)'
	CC_LINK_STATIC='$(CC) $(PROG_LIBPATH) $(CFLAGS) $(LDFLAGS)'
	# This grossness is necessary due to the presence of *three*
	# supported ABIs on Irix, and the precedence of the rpath over
	# LD_LIBRARY*_PATH.  Like OSF/1, _RLD*_ROOT needs to be set to
	# work around this lossage.
	#
	# Set the N32 and 64 variables first because the unqualified
	# variables affect all three and can cause the sed command to fail.
	#
	# This loop is to reduce the clutter a slight bit.
	add='`echo $(PROG_LIBPATH) | sed -e "s/-L//g" -e "s/ /:/g"`'
	RUN_ENV=
	for i in N32 64 ''; do
		RUN_ENV="${RUN_ENV+ $RUN_ENV}LD_LIBRARY${i}_PATH=$add\$\${LD_LIBRARY${i}_PATH+:\$\$LD_LIBRARY${i}_PATH}; export LD_LIBRARY${i}_PATH;"
		RUN_ENV="${RUN_ENV} _RLD${i}_ROOT=\$(FAKEDEST):\$\${_RLD${i}_ROOT+\$\${_RLD${i}_ROOT}}\$\${_RLD${i}_ROOT-/}; export _RLD${i}_ROOT;"
	done
	;;

mips-sgi-irix*)
	SHLIBVEXT='.so.$(LIBMAJOR).$(LIBMINOR)'
	SHLIBSEXT='.so.$(LIBMAJOR)'
	SHLIBEXT=.so
	SHOBJEXT=.o
	LDCOMBINE='ld -shared -ignore_unresolved -update_registry $(BUILDTOP)/so_locations -soname lib$(LIB)$(SHLIBSEXT)'
	SHLIB_EXPFLAGS='-rpath $(SHLIB_RDIRS) $(SHLIB_DIRS) $(SHLIB_EXPLIBS)'
	# no gprof for Irix...
	PROFFLAGS=-p
	RPATH_FLAG='-Wl,-rpath -Wl,'
	CC_LINK_SHARED='$(CC) $(PROG_LIBPATH) $(RPATH_FLAG)$(PROG_RPATH) $(CFLAGS) $(LDFLAGS)'
	CC_LINK_STATIC='$(CC) $(PROG_LIBPATH) $(CFLAGS) $(LDFLAGS)'
	# This grossness is necessary due to the presence of *three*
	# supported ABIs on Irix, and the precedence of the rpath over
	# LD_LIBRARY*_PATH.  Like OSF/1, _RLD*_ROOT needs to be set to
	# work around this lossage.
	#
	# Set the N32 and 64 variables first because the unqualified
	# variables affect all three and can cause the sed command to fail.
	#
	# This loop is to reduce the clutter a slight bit.
	add='`echo $(PROG_LIBPATH) | sed -e "s/-L//g" -e "s/ /:/g"`'
	RUN_ENV=
	for i in N32 64 ''; do
		RUN_ENV="${RUN_ENV+ $RUN_ENV}LD_LIBRARY${i}_PATH=$add\$\${LD_LIBRARY${i}_PATH+:\$\$LD_LIBRARY${i}_PATH}; export LD_LIBRARY${i}_PATH;"
		RUN_ENV="${RUN_ENV} _RLD${i}_ROOT=\$(FAKEDEST):\$\${_RLD${i}_ROOT+\$\${_RLD${i}_ROOT}}\$\${_RLD${i}_ROOT-/}; export _RLD${i}_ROOT;"
	done
	;;

# untested...
mips-sni-sysv4)
	if test "$krb5_cv_prog_gcc" = yes; then
		PICFLAGS=-fpic
		LDCOMBINE='$(CC) -G -Wl,-h -Wl,lib$(LIB)$(SHLIBSEXT)'
	else
		PICFLAGS=-Kpic
		LDCOMBINE='$(CC) -G -h lib$(LIB)$(SHLIBSEXT)'
	fi
	SHLIB_EXPFLAGS='-R$(SHLIB_RDIRS) $(SHLIB_DIRS) $(SHLIB_EXPLIBS)'
	SHLIBEXT=.so
	SHLIBVEXT='.so.$(LIBMAJOR).$(LIBMINOR)'
	SHLIBSEXT='.so.$(LIBMAJOR)'
	RPATH_FLAG=-R
	CC_LINK_SHARED='$(CC) $(PROG_LIBPATH) $(RPATH_FLAG)$(PROG_RPATH) $(CFLAGS) $(LDFLAGS)'
	CC_LINK_STATIC='$(CC) $(PROG_LIBPATH) $(CFLAGS) $(LDFLAGS)'
	RUN_ENV='LD_LIBRARY_PATH=`echo $(PROG_LIBPATH) | sed -e "s/-L//g" -e "s/ /:/g"`; export LD_LIBRARY_PATH;'
	PROFFLAGS=-pg
	;;

mips-*-netbsd*)
	PICFLAGS=-fPIC
	SHLIBVEXT='.so.$(LIBMAJOR).$(LIBMINOR)'
	SHLIBSEXT='.so.$(LIBMAJOR)'
	SHLIBEXT=.so
	LDCOMBINE='ld -shared -soname lib$(LIB)$(SHLIBSEXT)'
	SHLIB_EXPFLAGS='-R$(SHLIB_RDIRS) $(SHLIB_DIRS) $(SHLIB_EXPLIBS)'
	RPATH_FLAG='-Wl,-rpath -Wl,'
	CC_LINK_SHARED='$(CC) $(PROG_LIBPATH) $(RPATH_FLAG)$(PROG_RPATH) $(CFLAGS) $(LDFLAGS)'
	CC_LINK_STATIC='$(CC) $(PROG_LIBPATH) $(CFLAGS) $(LDFLAGS)'
	RUN_ENV='LD_LIBRARY_PATH=`echo $(PROG_LIBPATH) | sed -e "s/-L//g" -e "s/ /:/g"`; export LD_LIBRARY_PATH;'
	PROFFLAGS=-pg
	;;

*-*-netbsd*)
	PICFLAGS=-fpic
	SHLIBVEXT='.so.$(LIBMAJOR).$(LIBMINOR)'
	SHLIBEXT=.so
	LDCOMBINE='ld -Bshareable'
	SHLIB_EXPFLAGS='-R$(SHLIB_RDIRS) $(SHLIB_DIRS) $(SHLIB_EXPLIBS)'
	RPATH_FLAG=-R
	CC_LINK_SHARED='$(CC) $(PROG_LIBPATH) $(RPATH_FLAG)$(PROG_RPATH) $(CFLAGS) $(LDFLAGS)'
	CC_LINK_STATIC='$(CC) $(PROG_LIBPATH) $(CFLAGS) $(LDFLAGS)'
	RUN_ENV='LD_LIBRARY_PATH=`echo $(PROG_LIBPATH) | sed -e "s/-L//g" -e "s/ /:/g"`; export LD_LIBRARY_PATH;'
	PROFFLAGS=-pg
	;;

*-*-freebsd*)
	if test -x /usr/bin/objformat ; then
		objformat=`/usr/bin/objformat`
	else
		objformat="aout"
	fi
	PICFLAGS=-fpic
	if test "x$objformat" = "xelf" ; then
		SHLIBVEXT='.so.$(LIBMAJOR)'
		RPATH_FLAG='-Wl,-rpath -Wl,'
	else
		RPATH_FLAG=-R
		SHLIBVEXT='.so.$(LIBMAJOR).$(LIBMINOR)'
	fi
	CC_LINK_SHARED='$(CC) $(PROG_LIBPATH) $(RPATH_FLAG)$(PROG_RPATH) $(CFLAGS) $(LDFLAGS)'
	SHLIBEXT=.so
	LDCOMBINE='ld -Bshareable'
	SHLIB_EXPFLAGS='-R$(SHLIB_RDIRS) $(SHLIB_DIRS) $(SHLIB_EXPLIBS)'
	CC_LINK_STATIC='$(CC) $(PROG_LIBPATH) $(CFLAGS) $(LDFLAGS)'
	RUN_ENV='LD_LIBRARY_PATH=`echo $(PROG_LIBPATH) | sed -e "s/-L//g" -e "s/ /:/g"`; export LD_LIBRARY_PATH;'
	PROFFLAGS=-pg
	;;

*-*-openbsd*)
	PICFLAGS=-fpic
	SHLIBVEXT='.so.$(LIBMAJOR).$(LIBMINOR)'
	SHLIBEXT=.so
	LDCOMBINE='ld -Bshareable'
	SHLIB_EXPFLAGS='-R$(SHLIB_RDIRS) $(SHLIB_DIRS) $(SHLIB_EXPLIBS)'
	RPATH_FLAG=-R
	CC_LINK_SHARED='$(CC) $(PROG_LIBPATH) $(RPATH_FLAG)$(PROG_RPATH) $(CFLAGS) $(LDFLAGS)'
	CC_LINK_STATIC='$(CC) $(PROG_LIBPATH) $(CFLAGS) $(LDFLAGS)'
	RUN_ENV='LD_LIBRARY_PATH=`echo $(PROG_LIBPATH) | sed -e "s/-L//g" -e "s/ /:/g"`; export LD_LIBRARY_PATH;'
	PROFFLAGS=-pg
	;;

*-*-darwin* | *-*-rhapsody*)
	PICFLAGS=-fno-common
	SHLIBVEXT='.$(LIBMAJOR).$(LIBMINOR).dylib'
	SHLIBSEXT='.$(LIBMAJOR).dylib'
	SHLIB_EXPFLAGS='$(SHLIB_DIRS) $(SHLIB_EXPLIBS)'
	SHLIBEXT=.dylib
	LDCOMBINE='$(CC) -undefined warning -dynamiclib -compatibility_version $(LIBMAJOR) -current_version $(LIBMAJOR).$(LIBMINOR) -install_name "$(KRB5_LIBDIR)/lib$(LIB)$(SHLIBVEXT)" $(CFLAGS) $(LDFLAGS)'
	CC_LINK_SHARED='$(CC) $(PROG_LIBPATH) -dynamic $(CFLAGS) $(LDFLAGS)'
	CC_LINK_STATIC='$(CC) $(PROG_LIBPATH) $(CFLAGS) $(LDFLAGS)'
	RUN_ENV='DYLD_LIBRARY_PATH=`echo $(PROG_LIBPATH) | sed -e "s/-L//g" -e "s/ /:/g"`; export DYLD_LIBRARY_PATH;'
	;;

*-*-solaris*)
	if test "$krb5_cv_prog_gcc" = yes; then
		PICFLAGS=-fpic
		LDCOMBINE='$(CC) -shared -h lib$(LIB)$(SHLIBSEXT)'
	else
		PICFLAGS=-Kpic
		# Solaris cc doesn't default to stuffing the SONAME field...
		LDCOMBINE='$(CC) -dy -G -z text -h lib$(LIB)$(SHLIBSEXT)'
	fi
	SHLIBVEXT='.so.$(LIBMAJOR).$(LIBMINOR)'
	SHLIBSEXT='.so.$(LIBMAJOR)'
	SHLIBEXT=.so
	SHLIB_EXPFLAGS='-R$(SHLIB_RDIRS) $(SHLIB_DIRS) $(SHLIB_EXPLIBS)'
	PROFFLAGS=-pg
	RPATH_FLAG=-R
	CC_LINK_SHARED='$(PURE) $(CC) $(PROG_LIBPATH) $(RPATH_FLAG)$(PROG_RPATH) $(CFLAGS) $(LDFLAGS)'
	CC_LINK_STATIC='$(PURE) $(CC) $(PROG_LIBPATH) $(CFLAGS) $(LDFLAGS)'
	RUN_ENV='LD_LIBRARY_PATH=`echo $(PROG_LIBPATH) | sed -e "s/-L//g" -e "s/ /:/g"`; export LD_LIBRARY_PATH;'
	;;

*-*-sunos*)
	PICFLAGS=-fpic
	SHLIBVEXT='.so.$(LIBMAJOR).$(LIBMINOR)'
	SHLIBEXT=.so
	# The following grossness is to prevent relative paths from
	# creeping into the RPATH of an executable or library built
	# under SunOS; the explicit setting of LD_LIBRARY_PATH does
	# does not make it into the output file, while directories
	# passed by "-Ldirname" do.
	LDCOMBINE='LD_LIBRARY_PATH=`echo $(SHLIB_DIRS) | sed -e "s/-L//g" -e "s/ /:/g"` ld -dp -assert pure-text'
	SHLIB_EXPFLAGS='-L$(SHLIB_RDIRS) $(SHLIB_EXPLIBS)'
	PROFFLAGS=-pg
	# ick.
	RPATH_FLAG=-L
	CC_LINK_SHARED='LD_LIBRARY_PATH=`echo $(PROG_LIBPATH) | sed -e "s/-L//g" -e "s/ /:/g"` $(PURE) $(CC) $(RPATH_FLAG)$(PROG_RPATH) $(CFLAGS) $(LDFLAGS)'
	CC_LINK_STATIC='LD_LIBRARY_PATH=`echo $(PROG_LIBPATH) | sed -e "s/-L//g" -e "s/ /:/g` $(PURE) $(CC) $(CFLAGS) $(LDFLAGS)'
	RUN_ENV='LD_LIBRARY_PATH=`echo $(PROG_LIBPATH) | sed -e "s/-L//g" -e "s/ /:/g"`; export LD_LIBRARY_PATH;'
	;;
*-*-linux*)
	PICFLAGS=-fPIC
	SHLIBVEXT='.so.$(LIBMAJOR).$(LIBMINOR)'
	SHLIBSEXT='.so.$(LIBMAJOR)'
	SHLIBEXT=.so
	# Linux ld doesn't default to stuffing the SONAME field...
	# Use objdump -x to examine the fields of the library
	LDCOMBINE='$(CC) -shared -fPIC -Wl,-h,lib$(LIB)$(SHLIBSEXT)'
	LDCOMBINE_TAIL=''
	# For cases where we do have dependencies on other libraries
	# built in this tree...
	SHLIB_EXPFLAGS='-Wl,-R$(SHLIB_RDIRS) $(SHLIB_DIRS) $(SHLIB_EXPLIBS)'
	PROFFLAGS=-pg
	RPATH_FLAG='-Wl,-rpath -Wl,'
	CC_LINK_SHARED='$(CC) $(PROG_LIBPATH) $(RPATH_FLAG)$(PROG_RPATH) $(CFLAGS) $(LDFLAGS)'
	CC_LINK_STATIC='$(CC) $(PROG_LIBPATH) $(CFLAGS) $(LDFLAGS)'
	RUN_ENV='LD_LIBRARY_PATH=`echo $(PROG_LIBPATH) | sed -e "s/-L//g" -e "s/ /:/g"`; export LD_LIBRARY_PATH;'

	## old version:
	# Linux libc does weird stuff at shlib link time, must be
	# explicitly listed here.  This also makes it get used even
	# for the libraries marked as not having any dependencies; while
	# that's not strictly correct, the resulting behavior -- not adding
	# extra -R directories -- is still what we want.
	#LDCOMBINE='ld -shared -h lib$(LIB)$(SHLIBSEXT)'
	#LDCOMBINE_TAIL="-lc"
	#SHLIB_EXPFLAGS='-R$(SHLIB_RDIRS) $(SHLIB_DIRS) $(SHLIB_EXPLIBS)'

	;;

*-*-aix*)
	SHLIBVEXT='.a.$(LIBMAJOR).$(LIBMINOR)'
	SHLIBEXT=.a
	# AIX doesn't need separate PIC objects
	SHOBJEXT=.o
	LDCOMBINE='$(BUILDTOP)/util/makeshlib $(LIBMAJOR).$(LIBMINOR)'
	SHLIB_EXPFLAGS='  $(SHLIB_DIRS) $(SHLIB_EXPLIBS)'
	PROFFLAGS=-pg
	if test "$krb5_cv_prog_gcc" = "yes" ; then
	  RPATH_FLAG='-Wl,-blibpath:'
	else
	  RPATH_FLAG=-blibpath:
	fi
	RPATH_TAIL=:/usr/lib:/lib
	CC_LINK_SHARED='$(CC) $(PROG_LIBPATH) $(RPATH_FLAG)$(PROG_RPATH):'"$RPATH_TAIL"' $(CFLAGS) $(LDFLAGS)'
	CC_LINK_STATIC='$(CC) $(PROG_LIBPATH) $(CFLAGS) $(LDFLAGS)'
	# $(PROG_RPATH) is here to handle things like a shared tcl library
	RUN_ENV='LIBPATH=`echo $(PROG_LIBPATH) | sed -e "s/-L//g" -e "s/ /:/g"`:$(PROG_RPATH):/usr/lib:/usr/local/lib; export LIBPATH; '

esac
