Makefile.shared

#
# Helper makefile to link shared libraries in a portable way.
# This is much simpler than libtool, and hopefully not too error-prone.
#
# The following variables need to be set on the command line to build
# properly

# CC contains the current compiler.  This one MUST be defined
CC=cc
# LDFLAGS contains flags to be used when the temporary object file is
# created.  SHARED_LDFLAGS contains flags to be used when the shared
# library is created.
LDFLAGS=
SHARED_LDFLAGS=

# LIBNAME contains just the name of thhe library, without prefix ("lib"
# on Unix, "cyg" for certain forms under Cygwin...) or suffix (.a, .so,
# .dll, ...).  This one MUST have a value when using this makefile.
# For example, to build libfoo.so, you need to do the following:
#LIBNAME=foo
LIBNAME=

# LIBEXTRAS contains extra modules to link together with the library.
# For example, if a second library, say libbar.a needs to be linked into
# libfoo.so, you need to do the following:
#LIBEXTRAS=libbar.a
# Note that this MUST be used when using the link_o targets, to hold the
# names of all object files that go into the target library.
LIBEXTRAS=

# LIBVERSION contains the current version of the library.
# For example, to build libfoo.so.1.2, you need to do the following:
#LIBVERSION=1.2
LIBVERSION=

# LIBCOMPATVERSIONS contains the compatibility versions (a list) of
# the library.  They MUST be in decreasing order.
# For example, if libfoo.so.1.2.1 is backward compatible with libfoo.so.1.2
# and libfoo.so.1, you need to do the following:
#LIBCOMPATVERSIONS=1.2 1
# Note that on systems that use sonames, the last number will appear as
# part of it.
# It's also possible, for systems that support it (Tru64, for example),
# to add extra compatibility info with more precision, by adding a second
# list of versions, separated from the first with a semicolon, like this:
#LIBCOMPATVERSIONS=1.2 1;1.2.0 1.1.2 1.1.1 1.1.0 1.0.0
LIBCOMPATVERSIONS=

# LIBDEPS contains all the flags necessary to cover all necessary
# dependencies to other libraries.
LIBDEPS=

#------------------------------------------------------------------------------
# The rest is private to this makefile.

#DEBUG=:
DEBUG=set -x

top:
	echo "Trying to use this makefile interactively?  Don't."

CALC_VERSIONS=	\
	SHLIB_COMPAT=; SHLIB_SOVER=; \
	if [ -n "$(LIBVERSION)$(LIBCOMPATVERSIONS)" ]; then \
		prev=""; \
		for v in `echo "$(LIBVERSION) $(LIBCOMPATVERSIONS)" | cut -d';' -f1`; do \
			SHLIB_SOVER_NODOT=$$v \
			SHLIB_SOVER=.$$v; \
			if [ -n "$$prev" ]; then \
				SHLIB_COMPAT="$$SHLIB_COMPAT .$$prev"; \
			fi; \
			prev=$$v; \
		done; \
	fi

LINK_SO=	\
  ( $(DEBUG); \
    nm -Pg $$SHOBJECTS | grep ' [BDT] ' | cut -f1 -d' ' > lib$(LIBNAME).exp; \
    $$SHAREDCMD $(SHARED_LDFLAGS) $$SHAREDFLAGS -o $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX \
	$$ALLSYMSFLAGS $$SHOBJECTS $$NOALLSYMSFLAGS $$LIBDEPS ) && \
  $(SYMLINK_SO); ( $(DEBUG); rm -f lib$(LIBNAME).exp )
SYMLINK_SO=	\
	if [ -n "$$INHIBIT_SYMLINKS" ]; then :; else \
		prev=$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX; \
		if [ -n "$$SHLIB_COMPAT" ]; then \
			for x in $$SHLIB_COMPAT; do \
				( $(DEBUG); rm -f $$SHLIB$$x$$SHLIB_SUFFIX; \
				  ln -s $$prev $$SHLIB$$x$$SHLIB_SUFFIX ); \
				prev=$$SHLIB$$x$$SHLIB_SUFFIX; \
			done; \
		fi; \
		if [ -n "$$SHLIB_SOVER" ]; then \
			( $(DEBUG); rm -f $$SHLIB$$SHLIB_SUFFIX; \
			  ln -s $$prev $$SHLIB$$SHLIB_SUFFIX ); \
		fi; \
	fi

LINK_SO_A=	SHOBJECTS="lib$(LIBNAME).a $(LIBEXTRAS)"; $(LINK_SO)
LINK_SO_O=	SHOBJECTS="$(LIBEXTRAS)"; $(LINK_SO)
LINK_SO_A_VIA_O=	\
  SHOBJECTS=lib$(LIBNAME).o ALL=$$ALLSYMSFLAGS ALLSYMSFLAGS= NOALLSYMSFLAGS=; \
  ( $(DEBUG); \
    ld $(LDFLAGS) -r -o lib$(LIBNAME).o $$ALL lib$(LIBNAME).a $(LIBEXTRAS) ); \
  $(LINK_SO) && rm -f $(LIBNAME).o
LINK_SO_A_UNPACKED=	\
  UNPACKDIR=link_tmp.$$$$; rm -rf $$UNPACKDIR; mkdir $$UNPACKDIR; \
  (cd $$UNPACKDIR; ar x ../lib$(LIBNAME).a) && cp $(LIBEXTRAS) $$UNPACKDIR && \
  SHOBJECTS=$$UNPACKDIR/*.o; \
  $(LINK_SO) && rm -rf $$UNPACKDIR

DETECT_GNU_LD=(${CC} -Wl,-V /dev/null 2>&1 | grep '^GNU ld' )>/dev/null

DO_GNU=$(CALC_VERSIONS); \
	SHLIB=lib$(LIBNAME).so \
	SHLIB_SUFFIX= \
	LIBDEPS="$(LIBDEPS) -lc" \
	ALLSYMSFLAGS='-Wl,--whole-archive' \
	NOALLSYMSFLAGS='-Wl,--no-whole-archive' \
	SHAREDFLAGS="-shared -Wl,-Bsymbolic -Wl,-soname=$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX" \
	SHAREDCMD='$(CC)'

link_o.gnu:
	@ $(DO_GNU); $(LINK_SO_O)
link_a.gnu:
	@ $(DO_GNU); $(LINK_SO_A)

# For Darwin AKA Mac OS/X (dyld)
link_o.darwin:
	@ $(CALC_VERSIONS); \
	SHLIB=lib$(LIBNAME) \
	SHLIB_SUFFIX=.dylib \
	LIBDEPS="$(LIBDEPS) -lc" \
	ALLSYMSFLAGS='-all_load' \
	NOALLSYMSFLAGS='' \
	SHAREDFLAGS="-dynamiclib" \
	SHAREDCMD='$(CC)'; \
	if [ -n "$(LIBVERSION)" ]; then \
		SHAREDFLAGS="$SHAREDFLAGS -current_version $(LIBVERSION)"; \
	fi; \
	if [ -n "$$SHLIB_SOVER_NODOT" ]; then \
		SHAREDFLAGS="$SHAREDFLAGS -compatibility_version $$SHLIB_SOVER_NODOT"; \
	fi; \
	$(LINK_SO_O)
link_a.darwin:
	@ $(CALC_VERSIONS); \
	SHLIB=lib$(LIBNAME) \
	SHLIB_SUFFIX=.dylib \
	LIBDEPS="$(LIBDEPS) -lc" \
	ALLSYMSFLAGS='-all_load' \
	NOALLSYMSFLAGS='' \
	SHAREDFLAGS="-dynamiclib" \
	SHAREDCMD='$(CC)'; \
	if [ -n "$(LIBVERSION)" ]; then \
		SHAREDFLAGS="$SHAREDFLAGS -current_version $(LIBVERSION)"; \
	fi; \
	if [ -n "$$SHLIB_SOVER_NODOT" ]; then \
		SHAREDFLAGS="$SHAREDFLAGS -compatibility_version $$SHLIB_SOVER_NODOT"; \
	fi; \
	$(LINK_SO_A)

link_o.cygwin:
	@ $(CALC_VERSIONS); \
	INHIBIT_SYMLINKS=yes; \
	SHLIB=cyg$(LIBNAME) \
	SHLIB_SUFFIX=.dll \
	LIBDEPS="$(LIBDEPS) -lc" \
	SHLIB_SOVER=-$(LIBVERSION) \
	ALLSYMSFLAGS='-Wl,--whole-archive' \
	NOALLSYMSFLAGS='-Wl,--no-whole-archive' \
	SHAREDFLAGS="-shared -Wl,-Bsymbolic -Wl,--out-implib,lib$(LIBNAME).dll.a" \
	SHAREDCMD='${CC}'; \
	$(LINK_SO_O)
link_a.cygwin:
	@ $(CALC_VERSIONS); \
	INHIBIT_SYMLINKS=yes; \
	SHLIB=cyg$(LIBNAME) \
	SHLIB_SUFFIX=.dll \
	LIBDEPS="$(LIBDEPS) -lc" \
	SHLIB_SOVER= \
	ALLSYMSFLAGS='-Wl,--whole-archive' \
	NOALLSYMSFLAGS='-Wl,--no-whole-archive' \
	SHAREDFLAGS="-shared -Wl,-Bsymbolic -Wl,--out-implib,lib$(LIBNAME).dll.a" \
	SHAREDCMD='${CC}'; \
	$(LINK_SO_A)

link_o.alpha-osf1:
	@ if ${DETECT_GNU_LD}; then \
		$(DO_GNU); \
	else \
		SHLIB=lib$(LIBNAME).so \
		SHLIB_SUFFIX= \
		LIBDEPS="$(LIBDEPS) -lc" \
		SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
		if [ -n "$$SHLIB_HIST" ]; then \
			SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
		else \
			SHLIB_HIST="$(LIBVERSION)"; \
		fi
		SHLIB_SOVER= \
		ALLSYMSFLAGS='-all' \
		NOALLSYMSFLAGS='-none' \
		SHAREDFLAGS="-shared" \
		SHAREDCMD='$(CC)'; \
		if [ -n "$$SHLIB_HIST" ]; then \
			SHAREDFLAGS="$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
		fi; \
	fi; \
	$(LINK_SO_O)
link_a.alpha-osf1:
	@ if ${DETECT_GNU_LD}; then \
		$(DO_GNU); \
	else \
		SHLIB=lib$(LIBNAME).so \
		SHLIB_SUFFIX= \
		LIBDEPS="$(LIBDEPS) -lc" \
		SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
		if [ -n "$$SHLIB_HIST" ]; then \
			SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
		else \
			SHLIB_HIST="$(LIBVERSION)"; \
		fi
		SHLIB_SOVER= \
		ALLSYMSFLAGS='-all' \
		NOALLSYMSFLAGS='-none' \
		SHAREDFLAGS="-shared" \
		SHAREDCMD='$(CC)'; \
		if [ -n "$$SHLIB_HIST" ]; then \
			SHAREDFLAGS="$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
		fi; \
	fi; \
	$(LINK_SO_A)

# The difference between alpha-osf1-shared and tru64-shared is the `-msym'
# option passed to the linker.
link_o.tru64:
	@ if ${DETECT_GNU_LD}; then \
		$(DO_GNU); \
	else \
		SHLIB=lib$(LIBNAME).so \
		SHLIB_SUFFIX= \
		LIBDEPS="$(LIBDEPS) -lc" \
		SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
		if [ -n "$$SHLIB_HIST" ]; then \
			SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
		else \
			SHLIB_HIST="$(LIBVERSION)"; \
		fi
		SHLIB_SOVER= \
		ALLSYMSFLAGS='-all' \
		NOALLSYMSFLAGS='-none' \
		SHAREDFLAGS="-shared -msym" \
		SHAREDCMD='$(CC)'; \
		if [ -n "$$SHLIB_HIST" ]; then \
			SHAREDFLAGS="$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
		fi; \
	fi; \
	$(LINK_SO_O)
link_a.tru64:
	@ if ${DETECT_GNU_LD}; then \
		$(DO_GNU); \
	else \
		SHLIB=lib$(LIBNAME).so \
		SHLIB_SUFFIX= \
		LIBDEPS="$(LIBDEPS) -lc" \
		SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
		if [ -n "$$SHLIB_HIST" ]; then \
			SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
		else \
			SHLIB_HIST="$(LIBVERSION)"; \
		fi
		SHLIB_SOVER= \
		ALLSYMSFLAGS='-all' \
		NOALLSYMSFLAGS='-none' \
		SHAREDFLAGS="-shared -msym" \
		SHAREDCMD='$(CC)'; \
		if [ -n "$$SHLIB_HIST" ]; then \
			SHAREDFLAGS="$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
		fi; \
	fi; \
	$(LINK_SO_A)

# The difference between tru64-shared and tru64-shared-rpath is the
# -rpath ${LIBRPATH} passed to the linker.
link_o.tru64-rpath:
	@ if ${DETECT_GNU_LD}; then \
		$(DO_GNU); \
	else \
		SHLIB=lib$(LIBNAME).so \
		SHLIB_SUFFIX= \
		LIBDEPS="$(LIBDEPS) -lc" \
		SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
		if [ -n "$$SHLIB_HIST" ]; then \
			SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
		else \
			SHLIB_HIST="$(LIBVERSION)"; \
		fi
		SHLIB_SOVER= \
		ALLSYMSFLAGS='-all' \
		NOALLSYMSFLAGS='-none' \
		SHAREDFLAGS="-shared -msym -rpath $(LIBRPATH)" \
		SHAREDCMD='$(CC)'; \
		if [ -n "$$SHLIB_HIST" ]; then \
			SHAREDFLAGS="$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
		fi; \
	fi; \
	$(LINK_SO_O)
link_a.tru64-rpath:
	@ if ${DETECT_GNU_LD}; then \
		$(DO_GNU); \
	else \
		SHLIB=lib$(LIBNAME).so \
		SHLIB_SUFFIX= \
		LIBDEPS="$(LIBDEPS) -lc" \
		SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
		if [ -n "$$SHLIB_HIST" ]; then \
			SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
		else \
			SHLIB_HIST="$(LIBVERSION)"; \
		fi
		SHLIB_SOVER= \
		ALLSYMSFLAGS='-all' \
		NOALLSYMSFLAGS='-none' \
		SHAREDFLAGS="-shared -msym -rpath $(LIBRPATH)" \
		SHAREDCMD='$(CC)'; \
		if [ -n "$$SHLIB_HIST" ]; then \
			SHAREDFLAGS="$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
		fi; \
	fi; \
	$(LINK_SO_A)

link_o.solaris:
	@ if ${DETECT_GNU_LD}; then \
		$(DO_GNU); \
	else \
		$(CALC_VERSIONS); \
		MINUSZ='-z '; \
		(${CC} -v 2>&1 | grep gcc) > /dev/null && MINUSZ='-Wl,-z,'; \
		SHLIB=lib$(LIBNAME).so \
		SHLIB_SUFFIX= \
		LIBDEPS="$(LIBDEPS) -lc" \
		ALLSYMSFLAGS="$${MINUSZ}allextract" \
		NOALLSYMSFLAGS="$${MINUSZ}defaultextract" \
		SHAREDFLAGS='-G -dy -z text -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX' \
		SHAREDCMD='$(CC)'; \
	fi; \
	$(LINK_SO_O)
link_a.solaris:
	@ if ${DETECT_GNU_LD}; then \
		$(DO_GNU); \
	else \
		$(CALC_VERSIONS); \
		MINUSZ='-z '; \
		(${CC} -v 2>&1 | grep gcc) > /dev/null && MINUSZ='-Wl,-z,'; \
		SHLIB=lib$(LIBNAME).so \
		SHLIB_SUFFIX= \
		LIBDEPS="$(LIBDEPS) -lc" \
		ALLSYMSFLAGS="$${MINUSZ}allextract" \
		NOALLSYMSFLAGS="$${MINUSZ}defaultextract" \
		SHAREDFLAGS='-G -dy -z text -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX' \
		SHAREDCMD='$(CC)'; \
	fi; \
	$(LINK_SO_A)

# OpenServer 5 native compilers used
# UnixWare 7 and OpenUNIX 8 native compilers used
link_o.svr3:
	@ if ${DETECT_GNU_LD}; then \
		$(DO_GNU); \
	else \
		$(CALC_VERSIONS); \
		SHLIB=lib$(LIBNAME).so \
		SHLIB_SUFFIX= \
		LIBDEPS="$(LIBDEPS) -lc" \
		ALLSYMSFLAGS='-z allextract' \
		NOALLSYMSFLAGS='' \
		SHAREDFLAGS='-G -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX' \
		SHAREDCMD='$(CC)'; \
	fi; \
	$(LINK_SO_O)
link_a.svr3:
	@ if ${DETECT_GNU_LD}; then \
		$(DO_GNU); \
	else \
		$(CALC_VERSIONS); \
		SHLIB=lib$(LIBNAME).so \
		SHLIB_SUFFIX= \
		LIBDEPS="$(LIBDEPS) -lc" \
		ALLSYMSFLAGS='-z allextract' \
		NOALLSYMSFLAGS='' \
		SHAREDFLAGS='-G -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX' \
		SHAREDCMD='$(CC)'; \
	fi; \
	$(LINK_SO_A_UNPACKED)

link_o.irix:
	@ if ${DETECT_GNU_LD}; then \
		$(DO_GNU); \
	else \
		$(CALC_VERSIONS); \
		SHLIB=lib$(LIBNAME).so \
		SHLIB_SUFFIX= \
		LIBDEPS="$(LIBDEPS) -lc" \
		ALLSYMSFLAGS='-all' \
		NOALLSYMSFLAGS='' \
		SHAREDFLAGS='-shared -Wl,-soname,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX' \
		SHAREDCMD='$(CC)'; \
	fi; \
	$(LINK_SO_O)
link_a.irix:
	@ if ${DETECT_GNU_LD}; then \
		$(DO_GNU); \
	else \
		$(CALC_VERSIONS); \
		SHLIB=lib$(LIBNAME).so \
		SHLIB_SUFFIX= \
		LIBDEPS="$(LIBDEPS) -lc" \
		ALLSYMSFLAGS='-all' \
		NOALLSYMSFLAGS='' \
		SHAREDFLAGS='-shared -Wl,-soname,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX' \
		SHAREDCMD='$(CC)'; \
	fi; \
	$(LINK_SO_A)

# HP-UX includes the full pathname of libs we depend on, so we would get
# ./libcrypto (with ./ as path information) compiled into libssl, hence
# we omit the SHLIBDEPS. Applications must be linked with -lssl -lcrypto
# anyway.
# The object modules are loaded from lib$i.a using the undocumented -Fl
# option.
#
# WARNING: Until DSO is fixed to support a search path, we support SHLIB_PATH
#          by temporarily specifying "+s"!
#
link_o.hpux32:
	@ $(CALC_VERSIONS); \
	SHLIB=lib$(LIBNAME).sl \
	SHLIB_SUFFIX= \
	LIBDEPS="$(LIBDEPS) -lc" \
	ALLSYMSFLAGS='-Fl' \
	NOALLSYMSFLAGS='' \
	SHAREDFLAGS='+vnocompatwarnings -b -z +s +h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX' \
	SHAREDCMD='/usr/ccs/bin/ld'; \
	$(LINK_SO_O) && chmod a=rx $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX
link_a.hpux32:
	@ $(CALC_VERSIONS); \
	SHLIB=lib$(LIBNAME).sl \
	SHLIB_SUFFIX= \
	LIBDEPS="$(LIBDEPS) -lc" \
	ALLSYMSFLAGS='-Fl' \
	NOALLSYMSFLAGS='' \
	SHAREDFLAGS='+vnocompatwarnings -b -z +s +h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX' \
	SHAREDCMD='/usr/ccs/bin/ld'; \
	$(LINK_SO_A) && chmod a=rx $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX

# HP-UX includes the full pathname of libs we depend on, so we would get
# ./libcrypto (with ./ as path information) compiled into libssl, hence
# we omit the SHLIBDEPS. Applications must be linked with -lssl -lcrypto
# anyway.
#
# HP-UX in 64bit mode has "+s" enabled by default; it will search for
# shared libraries along LD_LIBRARY_PATH _and_ SHLIB_PATH.
#
link_o.hpux64:
	@ $(CALC_VERSIONS); \
	SHLIB=lib$(LIBNAME).sl \
	SHLIB_SUFFIX= \
	LIBDEPS="$(LIBDEPS) -lc" \
	ALLSYMSFLAGS='+forceload' \
	NOALLSYMSFLAGS='' \
	SHAREDFLAGS='-b -z +h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX' \
	SHAREDCMD='/usr/ccs/bin/ld'; \
	$(LINK_SO_O) && chmod a=rx $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX
link_a.hpux64:
	@ $(CALC_VERSIONS); \
	SHLIB=lib$(LIBNAME).sl \
	SHLIB_SUFFIX= \
	LIBDEPS="$(LIBDEPS) -lc" \
	ALLSYMSFLAGS='+forceload' \
	NOALLSYMSFLAGS='' \
	SHAREDFLAGS='-b -z +h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX' \
	SHAREDCMD='/usr/ccs/bin/ld'; \
	$(LINK_SO_A) && chmod a=rx $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX

link_o.aix:
	@ $(CALC_VERSIONS); \
	SHLIB=lib$(LIBNAME).so \
	SHLIB_SUFFIX= \
	LIBDEPS="$(LIBDEPS) -lc" \
	ALLSYMSFLAGS='-bnogc' \
	NOALLSYMSFLAGS='' \
	SHAREDFLAGS='-G -bE:lib$(LIBNAME).exp -bM:SRE' \
	SHAREDCMD='$(CC)'; \
	$(LINK_SO_O)
link_a.aix:
	@ $(CALC_VERSIONS); \
	SHLIB=lib$(LIBNAME).so \
	SHLIB_SUFFIX= \
	LIBDEPS="$(LIBDEPS) -lc" \
	ALLSYMSFLAGS='-bnogc' \
	NOALLSYMSFLAGS='' \
	SHAREDFLAGS='-G -bE:lib$(LIBNAME).exp -bM:SRE' \
	SHAREDCMD='$(CC)'; \
	$(LINK_SO_A_VIA_O)

link_o.reliantunix:
	@ $(CALC_VERSIONS); \
	SHLIB=lib$(LIBNAME).so \
	SHLIB_SUFFIX= \
	LIBDEPS="$(LIBDEPS) -lc" \
	ALLSYMSFLAGS= \
	NOALLSYMSFLAGS='' \
	SHAREDFLAGS='-G' \
	SHAREDCMD='$(CC)'; \
	$(LINK_SO_O)
link_a.reliantunix:
	@ $(CALC_VERSIONS); \
	SHLIB=lib$(LIBNAME).so \
	SHLIB_SUFFIX= \
	LIBDEPS="$(LIBDEPS) -lc" \
	ALLSYMSFLAGS= \
	NOALLSYMSFLAGS='' \
	SHAREDFLAGS='-G' \
	SHAREDCMD='$(CC)'; \
	$(LINK_SO_A_UNPACKED)

# Targets to build symbolic links when needed
symlink.gnu symlink.solaris symlink.svr3 symlink.irix \
symlink.aix symlink.reliantunix:
	@ $(CALC_VERSIONS); \
	SHLIB=lib$(LIBNAME).so; \
	$(SYMLINK_SO)
symlink.darwin:
	@ $(CALC_VERSIONS); \
	SHLIB=lib$(LIBNAME) \
	SHLIB_SUFFIX=.dylib; \
	$(SYMLINK_SO)
symlink.hpux32 symlink.hpux64:
	@ $(CALC_VERSIONS); \
	SHLIB=lib$(LIBNAME).sl; \
	$(SYMLINK_SO)
# The following lines means those specific architectures do no symlinks
symlink.cygwin symlib.alpha-osf1 symlink.tru64 symlink.tru64-rpath:

# Compatibility targets
link_o.bsd-gcc-shared link_o.linux-shared link_o.gnu-shared: link_o.gnu
link_a.bsd-gcc-shared link_a.linux-shared link_a.gnu-shared: link_a.gnu
symlink.bsd-gcc-shared symlink.linux-shared symlink.gnu-shared: symlink.gnu
link_o.darwin-shared: link_o.darwin
link_a.darwin-shared: link_a.darwin
symlink.darwin-shared: symlink.darwin
link_o.cygwin-shared: link_o.cygwin
link_a.cygwin-shared: link_a.cygwin
symlink.cygwin-shared: symlink.cygwin
link_o.alpha-osf1-shared: link_o.alpha-osf1
link_a.alpha-osf1-shared: link_a.alpha-osf1
symlink.alpha-osf1-shared: symlink.alpha-osf1
link_o.tru64-shared: link_o.tru64
link_a.tru64-shared: link_a.tru64
symlink.tru64-shared: symlink.tru64
link_o.tru64-shared-rpath: link_o.tru64-rpath
link_a.tru64-shared-rpath: link_a.tru64-rpath
symlink.tru64-shared-rpath: symlink.tru64-rpath
link_o.solaris-shared: link_o.solaris
link_a.solaris-shared: link_a.solaris
symlink.solaris-shared: symlink.solaris
link_o.svr3-shared: link_o.svr3
link_a.svr3-shared: link_a.svr3
symlink.svr3-shared: symlink.svr3
link_o.svr5-shared: link_o.svr3
link_a.svr5-shared: link_a.svr3
symlink.svr5-shared: symlink.svr3
link_o.irix-shared: link_o.irix
link_a.irix-shared: link_a.irix
symlink.irix-shared: symlink.irix
link_o.hpux-shared: link_o.hpux32
link_a.hpux-shared: link_a.hpux32
symlink.hpux-shared: symlink.hpux32
link_o.hpux64-shared: link_o.hpux64
link_a.hpux64-shared: link_a.hpux64
symlink.hpux64-shared: symlink.hpux64
link_o.aix-shared: link_o.aix
link_a.aix-shared: link_a.aix
symlink.aix-shared: symlink.aix
link_o.reliantunix-shared: link_o.reliantunix
link_a.reliantunix-shared: link_a.reliantunix
symlink.reliantunix-shared: symlink.reliantunix