Makefile.shared

   1 #
   2 # Helper makefile to link shared libraries in a portable way.
   3 # This is much simpler than libtool, and hopefully not too error-prone.
   4 #
   5 # The following variables need to be set on the command line to build
   6 # properly
   7
   8 # CC contains the current compiler.  This one MUST be defined
   9 CC=cc
  10 CFLAGS=$(CFLAG)
  11 # LDFLAGS contains flags to be used when temporary object files (when building
  12 # shared libraries) are created, or when an application is linked.
  13 # SHARED_LDFLAGS contains flags to be used when the shared library is created.
  14 LDFLAGS=
  15 SHARED_LDFLAGS=
  16
  17 NM=nm
  18
  19 # LIBNAME contains just the name of the library, without prefix ("lib"
  20 # on Unix, "cyg" for certain forms under Cygwin...) or suffix (.a, .so,
  21 # .dll, ...).  This one MUST have a value when using this makefile to
  22 # build shared libraries.
  23 # For example, to build libfoo.so, you need to do the following:
  24 #LIBNAME=foo
  25 LIBNAME=
  26
  27 # APPNAME contains just the name of the application, without suffix (""
  28 # on Unix, ".exe" on Windows, ...).  This one MUST have a value when using
  29 # this makefile to build applications.
  30 # For example, to build foo, you need to do the following:
  31 #APPNAME=foo
  32 APPNAME=
  33
  34 # OBJECTS contains all the object files to link together into the application.
  35 # This must contain at least one object file.
  36 #OBJECTS=foo.o
  37 OBJECTS=
  38
  39 # LIBEXTRAS contains extra modules to link together with the library.
  40 # For example, if a second library, say libbar.a needs to be linked into
  41 # libfoo.so, you need to do the following:
  42 #LIBEXTRAS=libbar.a
  43 # Note that this MUST be used when using the link_o targets, to hold the
  44 # names of all object files that go into the target library.
  45 LIBEXTRAS=
  46
  47 # LIBVERSION contains the current version of the library.
  48 # For example, to build libfoo.so.1.2, you need to do the following:
  49 #LIBVERSION=1.2
  50 LIBVERSION=
  51
  52 # LIBCOMPATVERSIONS contains the compatibility versions (a list) of
  53 # the library.  They MUST be in decreasing order.
  54 # For example, if libfoo.so.1.2.1 is backward compatible with libfoo.so.1.2
  55 # and libfoo.so.1, you need to do the following:
  56 #LIBCOMPATVERSIONS=1.2 1
  57 # Note that on systems that use sonames, the last number will appear as
  58 # part of it.
  59 # It's also possible, for systems that support it (Tru64, for example),
  60 # to add extra compatibility info with more precision, by adding a second
  61 # list of versions, separated from the first with a semicolon, like this:
  62 #LIBCOMPATVERSIONS=1.2 1;1.2.0 1.1.2 1.1.1 1.1.0 1.0.0
  63 LIBCOMPATVERSIONS=
  64
  65 # LIBDEPS contains all the flags necessary to cover all necessary
  66 # dependencies to other libraries.
  67 LIBDEPS=
  68
  69 #------------------------------------------------------------------------------
  70 # The rest is private to this makefile.
  71
  72 SET_X=:
  73 #SET_X=set -x
  74
  75 top:
  76         echo "Trying to use this makefile interactively?  Don't."
  77
  78 CALC_VERSIONS=  \
  79         SHLIB_COMPAT=; SHLIB_SOVER=; \
  80         if [ -n "$(LIBVERSION)$(LIBCOMPATVERSIONS)" ]; then \
  81                 prev=""; \
  82                 for v in `echo "$(LIBVERSION) $(LIBCOMPATVERSIONS)" | cut -d';' -f1`; do \
  83                         SHLIB_SOVER_NODOT=$$v; \
  84                         SHLIB_SOVER=.$$v; \
  85                         if [ -n "$$prev" ]; then \
  86                                 SHLIB_COMPAT="$$SHLIB_COMPAT .$$prev"; \
  87                         fi; \
  88                         prev=$$v; \
  89                 done; \
  90         fi
  91
  92 LINK_APP=       \
  93   ( $(SET_X);   \
  94     LIBDEPS="$${LIBDEPS:-$(LIBDEPS)}"; \
  95     LDCMD="$${LDCMD:-$(CC)}"; LDFLAGS="$${LDFLAGS:-$(CFLAGS)}"; \
  96     LIBPATH=`for x in $$LIBDEPS; do echo $$x; done | sed -e 's/^ *-L//;t' -e d | uniq`; \
  97     LIBPATH=`echo $$LIBPATH | sed -e 's/ /:/g'`; \
  98     LD_LIBRARY_PATH=$$LIBPATH:$$LD_LIBRARY_PATH \
  99     $${LDCMD} $${LDFLAGS} -o $${APPNAME:=$(APPNAME)} $(OBJECTS) $${LIBDEPS} )
 100
 101 LINK_SO=        \
 102   ( $(SET_X);   \
 103     LIBDEPS="$${LIBDEPS:-$(LIBDEPS)}"; \
 104     SHAREDCMD="$${SHAREDCMD:-$(CC)}"; \
 105     SHAREDFLAGS="$${SHAREDFLAGS:-$(CFLAGS) $(SHARED_LDFLAGS)}"; \
 106     LIBPATH=`for x in $$LIBDEPS; do echo $$x; done | sed -e 's/^ *-L//;t' -e d | uniq`; \
 107     LIBPATH=`echo $$LIBPATH | sed -e 's/ /:/g'`; \
 108     LD_LIBRARY_PATH=$$LIBPATH:$$LD_LIBRARY_PATH \
 109     $${SHAREDCMD} $${SHAREDFLAGS} \
 110         -o $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX \
 111         $$ALLSYMSFLAGS $$SHOBJECTS $$NOALLSYMSFLAGS $$LIBDEPS \
 112   ) && $(SYMLINK_SO)
 113
 114 SYMLINK_SO=     \
 115         if [ -n "$$INHIBIT_SYMLINKS" ]; then :; else \
 116                 prev=$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX; \
 117                 if [ -n "$$SHLIB_COMPAT" ]; then \
 118                         for x in $$SHLIB_COMPAT; do \
 119                                 ( $(SET_X); rm -f $$SHLIB$$x$$SHLIB_SUFFIX; \
 120                                   ln -s $$prev $$SHLIB$$x$$SHLIB_SUFFIX ); \
 121                                 prev=$$SHLIB$$x$$SHLIB_SUFFIX; \
 122                         done; \
 123                 fi; \
 124                 if [ -n "$$SHLIB_SOVER" ]; then \
 125                         ( $(SET_X); rm -f $$SHLIB$$SHLIB_SUFFIX; \
 126                           ln -s $$prev $$SHLIB$$SHLIB_SUFFIX ); \
 127                 fi; \
 128         fi
 129
 130 LINK_SO_A=      SHOBJECTS="lib$(LIBNAME).a $(LIBEXTRAS)"; $(LINK_SO)
 131 LINK_SO_O=      SHOBJECTS="$(LIBEXTRAS)"; $(LINK_SO)
 132
 133 LINK_SO_A_VIA_O=        \
 134   SHOBJECTS=lib$(LIBNAME).o; \
 135   ALL=$$ALLSYMSFLAGS; ALLSYMSFLAGS=; NOALLSYMSFLAGS=; \
 136   ( $(SET_X); \
 137     ld $(LDFLAGS) -r -o lib$(LIBNAME).o $$ALL lib$(LIBNAME).a $(LIBEXTRAS) ); \
 138   $(LINK_SO) && rm -f lib$(LIBNAME).o
 139
 140 LINK_SO_A_UNPACKED=     \
 141   UNPACKDIR=link_tmp.$$$$; rm -rf $$UNPACKDIR; mkdir $$UNPACKDIR; \
 142   (cd $$UNPACKDIR; ar x ../lib$(LIBNAME).a) && \
 143   ([ -z "$(LIBEXTRAS)" ] || cp $(LIBEXTRAS) $$UNPACKDIR) && \
 144   SHOBJECTS=$$UNPACKDIR/*.o; \
 145   $(LINK_SO) && rm -rf $$UNPACKDIR
 146
 147 DETECT_GNU_LD=($(CC) -Wl,-V /dev/null 2>&1 | grep '^GNU ld' )>/dev/null
 148
 149 DO_GNU_SO=$(CALC_VERSIONS); \
 150         SHLIB=lib$(LIBNAME).so; \
 151         SHLIB_SUFFIX=; \
 152         ALLSYMSFLAGS='-Wl,--whole-archive'; \
 153         NOALLSYMSFLAGS='-Wl,--no-whole-archive'; \
 154         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -Wl,-Bsymbolic -Wl,-soname=$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"
 155
 156 DO_GNU_APP=LDFLAGS="$(CFLAGS) -Wl,-rpath,$(LIBRPATH)"
 157
 158 #This is rather special.  It's a special target with which one can link
 159 #applications without bothering with any features that have anything to
 160 #do with shared libraries, for example when linking against static
 161 #libraries.  It's mostly here to avoid a lot of conditionals everywhere
 162 #else...
 163 link_app.:
 164         $(LINK_APP)
 165
 166 link_o.gnu:
 167         @ $(DO_GNU_SO); $(LINK_SO_O)
 168 link_a.gnu:
 169         @ $(DO_GNU_SO); $(LINK_SO_A)
 170 link_app.gnu:
 171         @ $(DO_GNU_APP); $(LINK_APP)
 172
 173 link_o.bsd:
 174         @if $(DETECT_GNU_LD); then $(DO_GNU_SO); else \
 175         $(CALC_VERSIONS); \
 176         SHLIB=lib$(LIBNAME).so; \
 177         SHLIB_SUFFIX=; \
 178         LIBDEPS=" "; \
 179         ALLSYMSFLAGS="-Wl,-Bforcearchive"; \
 180         NOALLSYMSFLAGS=; \
 181         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -nostdlib"; \
 182         fi; $(LINK_SO_O)
 183 link_a.bsd:
 184         @if $(DETECT_GNU_LD); then $(DO_GNU_SO); else \
 185         $(CALC_VERSIONS); \
 186         SHLIB=lib$(LIBNAME).so; \
 187         SHLIB_SUFFIX=; \
 188         LIBDEPS=" "; \
 189         ALLSYMSFLAGS="-Wl,-Bforcearchive"; \
 190         NOALLSYMSFLAGS=; \
 191         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -nostdlib"; \
 192         fi; $(LINK_SO_A)
 193 link_app.bsd:
 194         @if $(DETECT_GNU_LD); then $(DO_GNU_APP); else \
 195         LDFLAGS="$(CFLAGS) -Wl,-rpath,$(LIBPATH)"; \
 196         fi; $(LINK_APP)
 197
 198 # For Darwin AKA Mac OS/X (dyld)
 199 # Originally link_o.darwin produced .so, because it was hard-coded
 200 # in dso_dlfcn module. At later point dso_dlfcn switched to .dylib
 201 # extension in order to allow for run-time linking with vendor-
 202 # supplied shared libraries such as libz, so that link_o.darwin had
 203 # to be harmonized with it. This caused minor controversy, because
 204 # it was believed that dlopen can't be used to dynamically load
 205 # .dylib-s, only so called bundle modules (ones linked with -bundle
 206 # flag). The belief seems to be originating from pre-10.4 release,
 207 # where dlfcn functionality was emulated by dlcompat add-on. In
 208 # 10.4 dlopen was rewritten as native part of dyld and is documented
 209 # to be capable of loading both dynamic libraries and bundles. In
 210 # order to provide compatibility with pre-10.4 dlopen, modules are
 211 # linked with -bundle flag, which makes .dylib extension misleading.
 212 # It works, because dlopen is [and always was] extension-agnostic.
 213 # Alternative to this heuristic approach is to develop specific
 214 # MacOS X dso module relying on whichever "native" dyld interface.
 215 link_o.darwin:
 216         @ $(CALC_VERSIONS); \
 217         SHLIB=lib$(LIBNAME); \
 218         SHLIB_SUFFIX=.dylib; \
 219         ALLSYMSFLAGS='-all_load'; \
 220         NOALLSYMSFLAGS=''; \
 221         SHAREDFLAGS="$(CFLAGS) `echo $(SHARED_LDFLAGS) | sed s/dynamiclib/bundle/`"; \
 222         if [ -n "$(LIBVERSION)" ]; then \
 223                 SHAREDFLAGS="$$SHAREDFLAGS -current_version $(LIBVERSION)"; \
 224         fi; \
 225         if [ -n "$$SHLIB_SOVER_NODOT" ]; then \
 226                 SHAREDFLAGS="$$SHAREDFLAGS -compatibility_version $$SHLIB_SOVER_NODOT"; \
 227         fi; \
 228         $(LINK_SO_O)
 229 link_a.darwin:
 230         @ $(CALC_VERSIONS); \
 231         SHLIB=lib$(LIBNAME); \
 232         SHLIB_SUFFIX=.dylib; \
 233         ALLSYMSFLAGS='-all_load'; \
 234         NOALLSYMSFLAGS=''; \
 235         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS)"; \
 236         if [ -n "$(LIBVERSION)" ]; then \
 237                 SHAREDFLAGS="$$SHAREDFLAGS -current_version $(LIBVERSION)"; \
 238         fi; \
 239         if [ -n "$$SHLIB_SOVER_NODOT" ]; then \
 240                 SHAREDFLAGS="$$SHAREDFLAGS -compatibility_version $$SHLIB_SOVER_NODOT"; \
 241         fi; \
 242         SHAREDFLAGS="$$SHAREDFLAGS -install_name $(INSTALLTOP)/$(LIBDIR)/$$SHLIB$(SHLIB_EXT)"; \
 243         $(LINK_SO_A)
 244 link_app.darwin:        # is there run-path on darwin?
 245         $(LINK_APP)
 246
 247 link_o.cygwin:
 248         @ $(CALC_VERSIONS); \
 249         INHIBIT_SYMLINKS=yes; \
 250         SHLIB=cyg$(LIBNAME); \
 251         base=-Wl,--enable-auto-image-base; \
 252         deffile=; \
 253         if expr $(PLATFORM) : 'mingw' > /dev/null; then \
 254                 SHLIB=$(LIBNAME)eay32; base=; \
 255                 if test -f $(LIBNAME)eay32.def; then \
 256                         deffile=$(LIBNAME)eay32.def; \
 257                 fi; \
 258         fi; \
 259         SHLIB_SUFFIX=.dll; \
 260         LIBVERSION="$(LIBVERSION)"; \
 261         SHLIB_SOVER=${LIBVERSION:+"-$(LIBVERSION)"}; \
 262         ALLSYMSFLAGS='-Wl,--whole-archive'; \
 263         NOALLSYMSFLAGS='-Wl,--no-whole-archive'; \
 264         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared $$base $$deffile -Wl,-s,-Bsymbolic"; \
 265         $(LINK_SO_O)
 266 #for mingw target if def-file is in use dll-name should match library-name
 267 link_a.cygwin:
 268         @ $(CALC_VERSIONS); \
 269         INHIBIT_SYMLINKS=yes; \
 270         SHLIB=cyg$(LIBNAME); SHLIB_SOVER=-$(LIBVERSION); SHLIB_SUFFIX=.dll; \
 271         dll_name=$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX; extras=; \
 272         base=-Wl,--enable-auto-image-base; \
 273         if expr $(PLATFORM) : 'mingw' > /dev/null; then \
 274                 case $(LIBNAME) in \
 275                         crypto) SHLIB=libeay;; \
 276                         ssl) SHLIB=ssleay;; \
 277                 esac; \
 278                 SHLIB_SOVER=32; \
 279                 extras="$(LIBNAME).def"; \
 280                 $(PERL) util/mkdef.pl 32 $$SHLIB > $$extras; \
 281                 base=; [ $(LIBNAME) = "crypto" ] && base=-Wl,--image-base,0x63000000; \
 282         fi; \
 283         dll_name=$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX; \
 284         $(PERL) util/mkrc.pl $$dll_name | \
 285                 $(CROSS_COMPILE)windres -o rc.o; \
 286         extras="$$extras rc.o"; \
 287         ALLSYMSFLAGS='-Wl,--whole-archive'; \
 288         NOALLSYMSFLAGS='-Wl,--no-whole-archive'; \
 289         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared $$base -Wl,-s,-Bsymbolic -Wl,--out-implib,lib$(LIBNAME).dll.a $$extras"; \
 290         [ -f apps/$$dll_name ] && rm apps/$$dll_name; \
 291         [ -f test/$$dll_name ] && rm test/$$dll_name; \
 292         $(LINK_SO_A) || exit 1; \
 293         rm $$extras; \
 294         cp -p $$dll_name apps/; \
 295         cp -p $$dll_name test/
 296 link_app.cygwin:
 297         @if expr "$(CFLAGS)" : '.*OPENSSL_USE_APPLINK' > /dev/null; then \
 298                 LIBDEPS="$(TOP)/crypto/applink.o $${LIBDEPS:-$(LIBDEPS)}"; \
 299                 export LIBDEPS; \
 300         fi; \
 301         $(LINK_APP)
 302
 303 link_o.alpha-osf1:
 304         @ if $(DETECT_GNU_LD); then \
 305                 $(DO_GNU_SO); \
 306         else \
 307                 SHLIB=lib$(LIBNAME).so; \
 308                 SHLIB_SUFFIX=; \
 309                 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
 310                 if [ -n "$$SHLIB_HIST" ]; then \
 311                         SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
 312                 else \
 313                         SHLIB_HIST="$(LIBVERSION)"; \
 314                 fi; \
 315                 SHLIB_SOVER=; \
 316                 ALLSYMSFLAGS='-all'; \
 317                 NOALLSYMSFLAGS='-none'; \
 318                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -Wl,-B,symbolic"; \
 319                 if [ -n "$$SHLIB_HIST" ]; then \
 320                         SHAREDFLAGS="$$SHAREDFLAGS -set_version $$SHLIB_HIST"; \
 321                 fi; \
 322         fi; \
 323         $(LINK_SO_O)
 324 link_a.alpha-osf1:
 325         @ if $(DETECT_GNU_LD); then \
 326                 $(DO_GNU_SO); \
 327         else \
 328                 SHLIB=lib$(LIBNAME).so; \
 329                 SHLIB_SUFFIX=; \
 330                 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
 331                 if [ -n "$$SHLIB_HIST" ]; then \
 332                         SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
 333                 else \
 334                         SHLIB_HIST="$(LIBVERSION)"; \
 335                 fi; \
 336                 SHLIB_SOVER=; \
 337                 ALLSYMSFLAGS='-all'; \
 338                 NOALLSYMSFLAGS='-none'; \
 339                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -Wl,-B,symbolic"; \
 340                 if [ -n "$$SHLIB_HIST" ]; then \
 341                         SHAREDFLAGS="$$SHAREDFLAGS -set_version $$SHLIB_HIST"; \
 342                 fi; \
 343         fi; \
 344         $(LINK_SO_A)
 345 link_app.alpha-osf1:
 346         @if $(DETECT_GNU_LD); then \
 347                 $(DO_GNU_APP); \
 348         else \
 349                 LDFLAGS="$(CFLAGS) -rpath $(LIBRPATH)"; \
 350         fi; \
 351         $(LINK_APP)
 352
 353 link_o.solaris:
 354         @ if $(DETECT_GNU_LD); then \
 355                 $(DO_GNU_SO); \
 356         else \
 357                 $(CALC_VERSIONS); \
 358                 MINUSZ='-z '; \
 359                 ($(CC) -v 2>&1 | grep gcc) > /dev/null && MINUSZ='-Wl,-z,'; \
 360                 SHLIB=lib$(LIBNAME).so; \
 361                 SHLIB_SUFFIX=; \
 362                 ALLSYMSFLAGS="$${MINUSZ}allextract"; \
 363                 NOALLSYMSFLAGS="$${MINUSZ}defaultextract"; \
 364                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX -Wl,-Bsymbolic"; \
 365         fi; \
 366         $(LINK_SO_O)
 367 link_a.solaris:
 368         @ if $(DETECT_GNU_LD); then \
 369                 $(DO_GNU_SO); \
 370         else \
 371                 $(CALC_VERSIONS); \
 372                 MINUSZ='-z '; \
 373                 ($(CC) -v 2>&1 | grep gcc) > /dev/null && MINUSZ='-Wl,-z,'; \
 374                 SHLIB=lib$(LIBNAME).so; \
 375                 SHLIB_SUFFIX=;\
 376                 ALLSYMSFLAGS="$${MINUSZ}allextract"; \
 377                 NOALLSYMSFLAGS="$${MINUSZ}defaultextract"; \
 378                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX -Wl,-Bsymbolic"; \
 379         fi; \
 380         $(LINK_SO_A)
 381 link_app.solaris:
 382         @ if $(DETECT_GNU_LD); then \
 383                 $(DO_GNU_APP); \
 384         else \
 385                 LDFLAGS="$(CFLAGS) -R $(LIBRPATH)"; \
 386         fi; \
 387         $(LINK_APP)
 388
 389 # OpenServer 5 native compilers used
 390 link_o.svr3:
 391         @ if $(DETECT_GNU_LD); then \
 392                 $(DO_GNU_SO); \
 393         else \
 394                 $(CALC_VERSIONS); \
 395                 SHLIB=lib$(LIBNAME).so; \
 396                 SHLIB_SUFFIX=; \
 397                 ALLSYMSFLAGS=''; \
 398                 NOALLSYMSFLAGS=''; \
 399                 SHAREDFLAGS="$(CFLAGS) -G -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 400         fi; \
 401         $(LINK_SO_O)
 402 link_a.svr3:
 403         @ if $(DETECT_GNU_LD); then \
 404                 $(DO_GNU_SO); \
 405         else \
 406                 $(CALC_VERSIONS); \
 407                 SHLIB=lib$(LIBNAME).so; \
 408                 SHLIB_SUFFIX=; \
 409                 ALLSYMSFLAGS=''; \
 410                 NOALLSYMSFLAGS=''; \
 411                 SHAREDFLAGS="$(CFLAGS) -G -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 412         fi; \
 413         $(LINK_SO_A_UNPACKED)
 414 link_app.svr3:
 415         @$(DETECT_GNU_LD) && $(DO_GNU_APP); \
 416         $(LINK_APP)
 417
 418 # UnixWare 7 and OpenUNIX 8 native compilers used
 419 link_o.svr5:
 420         @ if $(DETECT_GNU_LD); then \
 421                 $(DO_GNU_SO); \
 422         else \
 423                 $(CALC_VERSIONS); \
 424                 SHARE_FLAG='-G'; \
 425                 ($(CC) -v 2>&1 | grep gcc) > /dev/null && SHARE_FLAG='-shared'; \
 426                 SHLIB=lib$(LIBNAME).so; \
 427                 SHLIB_SUFFIX=; \
 428                 ALLSYMSFLAGS=''; \
 429                 NOALLSYMSFLAGS=''; \
 430                 SHAREDFLAGS="$(CFLAGS) $${SHARE_FLAG} -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 431         fi; \
 432         $(LINK_SO_O)
 433 link_a.svr5:
 434         @ if $(DETECT_GNU_LD); then \
 435                 $(DO_GNU_SO); \
 436         else \
 437                 $(CALC_VERSIONS); \
 438                 SHARE_FLAG='-G'; \
 439                 ($(CC) -v 2>&1 | grep gcc) > /dev/null && SHARE_FLAG='-shared'; \
 440                 SHLIB=lib$(LIBNAME).so; \
 441                 SHLIB_SUFFIX=; \
 442                 ALLSYMSFLAGS=''; \
 443                 NOALLSYMSFLAGS=''; \
 444                 SHAREDFLAGS="$(CFLAGS) $${SHARE_FLAG} -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 445         fi; \
 446         $(LINK_SO_A_UNPACKED)
 447 link_app.svr5:
 448         @$(DETECT_GNU_LD) && $(DO_GNU_APP); \
 449         $(LINK_APP)
 450
 451 link_o.irix:
 452         @ if $(DETECT_GNU_LD); then \
 453                 $(DO_GNU_SO); \
 454         else \
 455                 $(CALC_VERSIONS); \
 456                 SHLIB=lib$(LIBNAME).so; \
 457                 SHLIB_SUFFIX=; \
 458                 MINUSWL=""; \
 459                 ($(CC) -v 2>&1 | grep gcc) > /dev/null && MINUSWL="-Wl,"; \
 460                 ALLSYMSFLAGS="$${MINUSWL}-all"; \
 461                 NOALLSYMSFLAGS="$${MINUSWL}-none"; \
 462                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -Wl,-soname,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX,-B,symbolic"; \
 463         fi; \
 464         $(LINK_SO_O)
 465 link_a.irix:
 466         @ if $(DETECT_GNU_LD); then \
 467                 $(DO_GNU_SO); \
 468         else \
 469                 $(CALC_VERSIONS); \
 470                 SHLIB=lib$(LIBNAME).so; \
 471                 SHLIB_SUFFIX=; \
 472                 MINUSWL=""; \
 473                 ($(CC) -v 2>&1 | grep gcc) > /dev/null && MINUSWL="-Wl,"; \
 474                 ALLSYMSFLAGS="$${MINUSWL}-all"; \
 475                 NOALLSYMSFLAGS="$${MINUSWL}-none"; \
 476                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -Wl,-soname,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX,-B,symbolic"; \
 477         fi; \
 478         $(LINK_SO_A)
 479 link_app.irix:
 480         @LDFLAGS="$(CFLAGS) -Wl,-rpath,$(LIBRPATH)"; \
 481         $(LINK_APP)
 482
 483 # 32-bit PA-RISC HP-UX embeds the -L pathname of libs we link with, so
 484 # we compensate for it with +cdp ../: and +cdp ./:. Yes, these rewrite
 485 # rules imply that we can only link one level down in catalog structure,
 486 # but that's what takes place for the moment of this writing. +cdp option
 487 # was introduced in HP-UX 11.x and applies in 32-bit PA-RISC link
 488 # editor context only [it's simply ignored in other cases, which are all
 489 # ELFs by the way].
 490 #
 491 link_o.hpux:
 492         @if $(DETECT_GNU_LD); then $(DO_GNU_SO); else \
 493         $(CALC_VERSIONS); \
 494         SHLIB=lib$(LIBNAME).sl; \
 495         expr "$(CFLAGS)" : '.*DSO_DLFCN' > /dev/null && SHLIB=lib$(LIBNAME).so; \
 496         SHLIB_SUFFIX=; \
 497         ALLSYMSFLAGS='-Wl,-Fl'; \
 498         NOALLSYMSFLAGS=''; \
 499         expr $(PLATFORM) : 'hpux64' > /dev/null && ALLSYMSFLAGS='-Wl,+forceload'; \
 500         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -Wl,-B,symbolic,+vnocompatwarnings,-z,+s,+h,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX,+cdp,../:,+cdp,./:"; \
 501         fi; \
 502         rm -f $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX || :; \
 503         $(LINK_SO_O) && chmod a=rx $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX
 504 link_a.hpux:
 505         @if $(DETECT_GNU_LD); then $(DO_GNU_SO); else \
 506         $(CALC_VERSIONS); \
 507         SHLIB=lib$(LIBNAME).sl; \
 508         expr $(PLATFORM) : '.*ia64' > /dev/null && SHLIB=lib$(LIBNAME).so; \
 509         SHLIB_SUFFIX=; \
 510         ALLSYMSFLAGS='-Wl,-Fl'; \
 511         NOALLSYMSFLAGS=''; \
 512         expr $(PLATFORM) : 'hpux64' > /dev/null && ALLSYMSFLAGS='-Wl,+forceload'; \
 513         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -Wl,-B,symbolic,+vnocompatwarnings,-z,+s,+h,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX,+cdp,../:,+cdp,./:"; \
 514         fi; \
 515         rm -f $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX || :; \
 516         $(LINK_SO_A) && chmod a=rx $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX
 517 link_app.hpux:
 518         @if $(DETECT_GNU_LD); then $(DO_GNU_APP); else \
 519         LDFLAGS="$(CFLAGS) -Wl,+s,+cdp,../:,+cdp,./:,+b,$(LIBRPATH)"; \
 520         fi; \
 521         $(LINK_APP)
 522
 523 link_o.aix:
 524         @ $(CALC_VERSIONS); \
 525         OBJECT_MODE=`expr "x$(SHARED_LDFLAGS)" : 'x\-[a-z]*\(64\)'` || :; \
 526         OBJECT_MODE=$${OBJECT_MODE:-32}; export OBJECT_MODE; \
 527         SHLIB=lib$(LIBNAME).so; \
 528         SHLIB_SUFFIX=; \
 529         ALLSYMSFLAGS=''; \
 530         NOALLSYMSFLAGS=''; \
 531         SHAREDFLAGS='$(CFLAGS) $(SHARED_LDFLAGS) -Wl,-bexpall,-bnolibpath,-bM:SRE'; \
 532         $(LINK_SO_O);
 533 link_a.aix:
 534         @ $(CALC_VERSIONS); \
 535         OBJECT_MODE=`expr "x$(SHARED_LDFLAGS)" : 'x\-[a-z]*\(64\)'` || : ; \
 536         OBJECT_MODE=$${OBJECT_MODE:-32}; export OBJECT_MODE; \
 537         SHLIB=lib$(LIBNAME).so; \
 538         SHLIB_SUFFIX=; \
 539         ALLSYMSFLAGS='-bnogc'; \
 540         NOALLSYMSFLAGS=''; \
 541         SHAREDFLAGS='$(CFLAGS) $(SHARED_LDFLAGS) -Wl,-bexpall,-bnolibpath,-bM:SRE'; \
 542         $(LINK_SO_A_VIA_O)
 543 link_app.aix:
 544         LDFLAGS="$(CFLAGS) -Wl,-brtl,-blibpath:$(LIBRPATH):$${LIBPATH:-/usr/lib:/lib}"; \
 545         $(LINK_APP)
 546
 547
 548 # Targets to build symbolic links when needed
 549 symlink.gnu symlink.solaris symlink.svr3 symlink.svr5 symlink.irix \
 550 symlink.aix:
 551         @ $(CALC_VERSIONS); \
 552         SHLIB=lib$(LIBNAME).so; \
 553         $(SYMLINK_SO)
 554 symlink.darwin:
 555         @ $(CALC_VERSIONS); \
 556         SHLIB=lib$(LIBNAME); \
 557         SHLIB_SUFFIX=.dylib; \
 558         $(SYMLINK_SO)
 559 symlink.hpux:
 560         @ $(CALC_VERSIONS); \
 561         SHLIB=lib$(LIBNAME).sl; \
 562         expr $(PLATFORM) : '.*ia64' > /dev/null && SHLIB=lib$(LIBNAME).so; \
 563         $(SYMLINK_SO)
 564 # The following lines means those specific architectures do no symlinks
 565 symlink.cygwin symlink.alpha-osf1 symlink.tru64 symlink.tru64-rpath:
 566
 567 # Compatibility targets
 568 link_o.bsd-gcc-shared link_o.linux-shared link_o.gnu-shared: link_o.gnu
 569 link_a.bsd-gcc-shared link_a.linux-shared link_a.gnu-shared: link_a.gnu
 570 link_app.bsd-gcc-shared link_app.linux-shared link_app.gnu-shared: link_app.gnu
 571 symlink.bsd-gcc-shared symlink.bsd-shared symlink.linux-shared symlink.gnu-shared: symlink.gnu
 572 link_o.bsd-shared: link_o.bsd
 573 link_a.bsd-shared: link_a.bsd
 574 link_app.bsd-shared: link_app.bsd
 575 link_o.darwin-shared: link_o.darwin
 576 link_a.darwin-shared: link_a.darwin
 577 link_app.darwin-shared: link_app.darwin
 578 symlink.darwin-shared: symlink.darwin
 579 link_o.cygwin-shared: link_o.cygwin
 580 link_a.cygwin-shared: link_a.cygwin
 581 link_app.cygwin-shared: link_app.cygwin
 582 symlink.cygwin-shared: symlink.cygwin
 583 link_o.alpha-osf1-shared: link_o.alpha-osf1
 584 link_a.alpha-osf1-shared: link_a.alpha-osf1
 585 link_app.alpha-osf1-shared: link_app.alpha-osf1
 586 symlink.alpha-osf1-shared: symlink.alpha-osf1
 587 link_o.tru64-shared: link_o.tru64
 588 link_a.tru64-shared: link_a.tru64
 589 link_app.tru64-shared: link_app.tru64
 590 symlink.tru64-shared: symlink.tru64
 591 link_o.tru64-shared-rpath: link_o.tru64-rpath
 592 link_a.tru64-shared-rpath: link_a.tru64-rpath
 593 link_app.tru64-shared-rpath: link_app.tru64-rpath
 594 symlink.tru64-shared-rpath: symlink.tru64-rpath
 595 link_o.solaris-shared: link_o.solaris
 596 link_a.solaris-shared: link_a.solaris
 597 link_app.solaris-shared: link_app.solaris
 598 symlink.solaris-shared: symlink.solaris
 599 link_o.svr3-shared: link_o.svr3
 600 link_a.svr3-shared: link_a.svr3
 601 link_app.svr3-shared: link_app.svr3
 602 symlink.svr3-shared: symlink.svr3
 603 link_o.svr5-shared: link_o.svr5
 604 link_a.svr5-shared: link_a.svr5
 605 link_app.svr5-shared: link_app.svr5
 606 symlink.svr5-shared: symlink.svr5
 607 link_o.irix-shared: link_o.irix
 608 link_a.irix-shared: link_a.irix
 609 link_app.irix-shared: link_app.irix
 610 symlink.irix-shared: symlink.irix
 611 link_o.hpux-shared: link_o.hpux
 612 link_a.hpux-shared: link_a.hpux
 613 link_app.hpux-shared: link_app.hpux
 614 symlink.hpux-shared: symlink.hpux
 615 link_o.aix-shared: link_o.aix
 616 link_a.aix-shared: link_a.aix
 617 link_app.aix-shared: link_app.aix
 618 symlink.aix-shared: symlink.aix