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 # LDFLAGS contains flags to be used when temporary object files (when building
  11 # shared libraries) are created, or when an application is linked.
  12 # SHARED_LDFLAGS contains flags to be used when the shared library is created.
  13 LDFLAGS=
  14 SHARED_LDFLAGS=
  15
  16 # LIBNAME contains just the name of the library, without prefix ("lib"
  17 # on Unix, "cyg" for certain forms under Cygwin...) or suffix (.a, .so,
  18 # .dll, ...).  This one MUST have a value when using this makefile to
  19 # build shared libraries.
  20 # For example, to build libfoo.so, you need to do the following:
  21 #LIBNAME=foo
  22 LIBNAME=
  23
  24 # APPNAME contains just the name of the application, without suffix (""
  25 # on Unix, ".exe" on Windows, ...).  This one MUST have a value when using
  26 # this makefile to build applications.
  27 # For example, to build foo, you need to do the following:
  28 #APPNAME=foo
  29 APPNAME=
  30
  31 # OBJECTS contains all the object files to link together into the application.
  32 # This must contain at least one object file.
  33 #OBJECTS=foo.o
  34 OBJECTS=
  35
  36 # LIBEXTRAS contains extra modules to link together with the library.
  37 # For example, if a second library, say libbar.a needs to be linked into
  38 # libfoo.so, you need to do the following:
  39 #LIBEXTRAS=libbar.a
  40 # Note that this MUST be used when using the link_o targets, to hold the
  41 # names of all object files that go into the target library.
  42 LIBEXTRAS=
  43
  44 # LIBVERSION contains the current version of the library.
  45 # For example, to build libfoo.so.1.2, you need to do the following:
  46 #LIBVERSION=1.2
  47 LIBVERSION=
  48
  49 # LIBCOMPATVERSIONS contains the compatibility versions (a list) of
  50 # the library.  They MUST be in decreasing order.
  51 # For example, if libfoo.so.1.2.1 is backward compatible with libfoo.so.1.2
  52 # and libfoo.so.1, you need to do the following:
  53 #LIBCOMPATVERSIONS=1.2 1
  54 # Note that on systems that use sonames, the last number will appear as
  55 # part of it.
  56 # It's also possible, for systems that support it (Tru64, for example),
  57 # to add extra compatibility info with more precision, by adding a second
  58 # list of versions, separated from the first with a semicolon, like this:
  59 #LIBCOMPATVERSIONS=1.2 1;1.2.0 1.1.2 1.1.1 1.1.0 1.0.0
  60 LIBCOMPATVERSIONS=
  61
  62 # LIBDEPS contains all the flags necessary to cover all necessary
  63 # dependencies to other libraries.
  64 LIBDEPS=
  65
  66 #------------------------------------------------------------------------------
  67 # The rest is private to this makefile.
  68
  69 #DEBUG=:
  70 DEBUG=set -x
  71
  72 top:
  73         echo "Trying to use this makefile interactively?  Don't."
  74
  75 CALC_VERSIONS=  \
  76         SHLIB_COMPAT=; SHLIB_SOVER=; \
  77         if [ -n "$(LIBVERSION)$(LIBCOMPATVERSIONS)" ]; then \
  78                 prev=""; \
  79                 for v in `echo "$(LIBVERSION) $(LIBCOMPATVERSIONS)" | cut -d';' -f1`; do \
  80                         SHLIB_SOVER_NODOT=$$v; \
  81                         SHLIB_SOVER=.$$v; \
  82                         if [ -n "$$prev" ]; then \
  83                                 SHLIB_COMPAT="$$SHLIB_COMPAT .$$prev"; \
  84                         fi; \
  85                         prev=$$v; \
  86                 done; \
  87         fi
  88
  89 LINK_APP=       \
  90   ( $(DEBUG);   \
  91     LIBPATH=`for x in $$LIBDEPS; do if echo $$x | grep '^ *-L' > /dev/null 2>&1; then echo $$x | sed -e 's/^ *-L//'; fi; done | uniq`; \
  92     LIBPATH=`echo $$LIBPATH | sed -e 's/ /:/g'`; \
  93     LD_LIBRARY_PATH=$$LIBPATH:$$LD_LIBRARY_PATH \
  94     $$LDCMD $(LDFLAGS) $$LDFLAGS -o $$APPNAME $(OBJECTS) $$LIBDEPS )
  95
  96 LINK_SO=        \
  97   ( $(DEBUG);   \
  98     nm -Pg $$SHOBJECTS | grep ' [BDT] ' | cut -f1 -d' ' > lib$(LIBNAME).exp; \
  99     LIBPATH=`for x in $$LIBDEPS; do if echo $$x | grep '^ *-L' > /dev/null 2>&1; then echo $$x | sed -e 's/^ *-L//'; fi; done | uniq`; \
 100     LIBPATH=`echo $$LIBPATH | sed -e 's/ /:/g'`; \
 101     LD_LIBRARY_PATH=$$LIBPATH:$$LD_LIBRARY_PATH \
 102     $$SHAREDCMD $(SHARED_LDFLAGS) $$SHAREDFLAGS -o $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX \
 103         $$ALLSYMSFLAGS $$SHOBJECTS $$NOALLSYMSFLAGS $$LIBDEPS ) && \
 104   $(SYMLINK_SO); ( $(DEBUG); rm -f lib$(LIBNAME).exp )
 105 SYMLINK_SO=     \
 106         if [ -n "$$INHIBIT_SYMLINKS" ]; then :; else \
 107                 prev=$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX; \
 108                 if [ -n "$$SHLIB_COMPAT" ]; then \
 109                         for x in $$SHLIB_COMPAT; do \
 110                                 ( $(DEBUG); rm -f $$SHLIB$$x$$SHLIB_SUFFIX; \
 111                                   ln -s $$prev $$SHLIB$$x$$SHLIB_SUFFIX ); \
 112                                 prev=$$SHLIB$$x$$SHLIB_SUFFIX; \
 113                         done; \
 114                 fi; \
 115                 if [ -n "$$SHLIB_SOVER" ]; then \
 116                         ( $(DEBUG); rm -f $$SHLIB$$SHLIB_SUFFIX; \
 117                           ln -s $$prev $$SHLIB$$SHLIB_SUFFIX ); \
 118                 fi; \
 119         fi
 120
 121 LINK_SO_A=      SHOBJECTS="lib$(LIBNAME).a $(LIBEXTRAS)"; $(LINK_SO)
 122 LINK_SO_O=      SHOBJECTS="$(LIBEXTRAS)"; $(LINK_SO)
 123 LINK_SO_A_VIA_O=        \
 124   SHOBJECTS=lib$(LIBNAME).o; \
 125   ALL=$$ALLSYMSFLAGS; ALLSYMSFLAGS=; NOALLSYMSFLAGS=; \
 126   ( $(DEBUG); \
 127     ld $(LDFLAGS) -r -o lib$(LIBNAME).o $$ALL lib$(LIBNAME).a $(LIBEXTRAS) ); \
 128   $(LINK_SO) && rm -f $(LIBNAME).o
 129 LINK_SO_A_UNPACKED=     \
 130   UNPACKDIR=link_tmp.$$$$; rm -rf $$UNPACKDIR; mkdir $$UNPACKDIR; \
 131   (cd $$UNPACKDIR; ar x ../lib$(LIBNAME).a) && \
 132   ([ -z "$(LIBEXTRAS)" ] || cp $(LIBEXTRAS) $$UNPACKDIR) && \
 133   SHOBJECTS=$$UNPACKDIR/*.o; \
 134   $(LINK_SO) && rm -rf $$UNPACKDIR
 135
 136 DETECT_GNU_LD=(${CC} -Wl,-V /dev/null 2>&1 | grep '^GNU ld' )>/dev/null
 137
 138 DO_GNU_SO=$(CALC_VERSIONS); \
 139         SHLIB=lib$(LIBNAME).so; \
 140         SHLIB_SUFFIX=; \
 141         LIBDEPS="$(LIBDEPS) -lc"; \
 142         ALLSYMSFLAGS='-Wl,--whole-archive'; \
 143         NOALLSYMSFLAGS='-Wl,--no-whole-archive'; \
 144         SHAREDFLAGS="-shared -Wl,-Bsymbolic -Wl,-soname=$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX -Wl,-rpath,$(LIBRPATH)"; \
 145         SHAREDCMD='$(CC)'
 146 DO_GNU_APP=LDCMD=$(CC);\
 147         LDFLAGS="-Wl,-rpath,$(LIBRPATH)"; \
 148         LIBDEPS="$(LIBDEPS) -lc"; \
 149         APPNAME=$(APPNAME)
 150
 151 #This is rather special.  It's a special target with which one can link
 152 #applications without bothering with any features that have anything to
 153 #do with shared libraries, for example when linking against static
 154 #libraries.  It's mostly here to avoid a lot of conditionals everywhere
 155 #else...
 156 link_app.:
 157         LDCMD=$(CC); \
 158         LDFLAGS=""; \
 159         LIBDEPS="$(LIBDEPS)"; \
 160         APPNAME="$(APPNAME)"; \
 161         $(LINK_APP)
 162
 163 link_o.gnu:
 164         @ $(DO_GNU_SO); $(LINK_SO_O)
 165 link_a.gnu:
 166         @ $(DO_GNU_SO); $(LINK_SO_A)
 167 link_app.gnu:
 168         @ $(DO_GNU_APP); $(LINK_APP)
 169
 170 # For Darwin AKA Mac OS/X (dyld)
 171 link_o.darwin:
 172         @ $(CALC_VERSIONS); \
 173         SHLIB=lib$(LIBNAME); \
 174         SHLIB_SUFFIX=.dylib; \
 175         LIBDEPS="$(LIBDEPS) -lc"; \
 176         ALLSYMSFLAGS='-all_load'; \
 177         NOALLSYMSFLAGS=''; \
 178         SHAREDFLAGS="-dynamiclib"; \
 179         SHAREDCMD='$(CC)'; \
 180         if [ -n "$(LIBVERSION)" ]; then \
 181                 SHAREDFLAGS="$$SHAREDFLAGS -current_version $(LIBVERSION)"; \
 182         fi; \
 183         if [ -n "$$SHLIB_SOVER_NODOT" ]; then \
 184                 SHAREDFLAGS="$$SHAREDFLAGS -compatibility_version $$SHLIB_SOVER_NODOT"; \
 185         fi; \
 186         $(LINK_SO_O)
 187 link_a.darwin:
 188         @ $(CALC_VERSIONS); \
 189         SHLIB=lib$(LIBNAME); \
 190         SHLIB_SUFFIX=.dylib; \
 191         LIBDEPS="$(LIBDEPS) -lc"; \
 192         ALLSYMSFLAGS='-all_load'; \
 193         NOALLSYMSFLAGS=''; \
 194         SHAREDFLAGS="-dynamiclib"; \
 195         SHAREDCMD='$(CC)'; \
 196         if [ -n "$(LIBVERSION)" ]; then \
 197                 SHAREDFLAGS="$$SHAREDFLAGS -current_version $(LIBVERSION)"; \
 198         fi; \
 199         if [ -n "$$SHLIB_SOVER_NODOT" ]; then \
 200                 SHAREDFLAGS="$$SHAREDFLAGS -compatibility_version $$SHLIB_SOVER_NODOT"; \
 201         fi; \
 202         $(LINK_SO_A)
 203 link_app.darwin:
 204         LDCMD=$(CC);\
 205         LDFLAGS=""; \
 206         LIBDEPS="$(LIBDEPS) -lc"; \
 207         APPNAME="$(APPNAME)"; \
 208         $(LINK_APP)
 209
 210 link_o.cygwin:
 211         @ $(CALC_VERSIONS); \
 212         INHIBIT_SYMLINKS=yes; \
 213         SHLIB=cyg$(LIBNAME); \
 214         SHLIB_SUFFIX=.dll; \
 215         LIBDEPS="$(LIBDEPS) -lc"; \
 216         SHLIB_SOVER=-$(LIBVERSION); \
 217         ALLSYMSFLAGS='-Wl,--whole-archive'; \
 218         NOALLSYMSFLAGS='-Wl,--no-whole-archive'; \
 219         SHAREDFLAGS="-shared -Wl,-Bsymbolic -Wl,--out-implib,lib$(LIBNAME).dll.a"; \
 220         SHAREDCMD='${CC}'; \
 221         $(LINK_SO_O)
 222 link_a.cygwin:
 223         @ $(CALC_VERSIONS); \
 224         INHIBIT_SYMLINKS=yes; \
 225         SHLIB=cyg$(LIBNAME); \
 226         SHLIB_SUFFIX=.dll; \
 227         LIBDEPS="$(LIBDEPS) -lc"; \
 228         SHLIB_SOVER=; \
 229         ALLSYMSFLAGS='-Wl,--whole-archive'; \
 230         NOALLSYMSFLAGS='-Wl,--no-whole-archive'; \
 231         SHAREDFLAGS="-shared -Wl,-Bsymbolic -Wl,--out-implib,lib$(LIBNAME).dll.a"; \
 232         SHAREDCMD='${CC}'; \
 233         $(LINK_SO_A)
 234 link_app.cygwin:
 235         LDCMD=$(CC);\
 236         LDFLAGS=""; \
 237         LIBDEPS="$(LIBDEPS) -lc"; \
 238         APPNAME="$(APPNAME).exe"
 239         $(LINK_APP)
 240
 241 link_o.alpha-osf1:
 242         @ if ${DETECT_GNU_LD}; then \
 243                 $(DO_GNU_SO); \
 244         else \
 245                 SHLIB=lib$(LIBNAME).so; \
 246                 SHLIB_SUFFIX=; \
 247                 LIBDEPS="$(LIBDEPS) -lc"; \
 248                 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
 249                 if [ -n "$$SHLIB_HIST" ]; then \
 250                         SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
 251                 else \
 252                         SHLIB_HIST="$(LIBVERSION)"; \
 253                 fi; \
 254                 SHLIB_SOVER=; \
 255                 ALLSYMSFLAGS='-all'; \
 256                 NOALLSYMSFLAGS='-none'; \
 257                 SHAREDFLAGS="-shared"; \
 258                 SHAREDCMD='$(CC)'; \
 259                 if [ -n "$$SHLIB_HIST" ]; then \
 260                         SHAREDFLAGS="$$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
 261                 fi; \
 262         fi; \
 263         $(LINK_SO_O)
 264 link_a.alpha-osf1:
 265         @ if ${DETECT_GNU_LD}; then \
 266                 $(DO_GNU_SO); \
 267         else \
 268                 SHLIB=lib$(LIBNAME).so; \
 269                 SHLIB_SUFFIX=; \
 270                 LIBDEPS="$(LIBDEPS) -lc"; \
 271                 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
 272                 if [ -n "$$SHLIB_HIST" ]; then \
 273                         SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
 274                 else \
 275                         SHLIB_HIST="$(LIBVERSION)"; \
 276                 fi; \
 277                 SHLIB_SOVER=; \
 278                 ALLSYMSFLAGS='-all'; \
 279                 NOALLSYMSFLAGS='-none'; \
 280                 SHAREDFLAGS="-shared"; \
 281                 SHAREDCMD='$(CC)'; \
 282                 if [ -n "$$SHLIB_HIST" ]; then \
 283                         SHAREDFLAGS="$$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
 284                 fi; \
 285         fi; \
 286         $(LINK_SO_A)
 287 link_app.alpha-osf1:
 288         @ if ${DETECT_GNU_LD}; then \
 289                 $(DO_GNU_APP); \
 290         else \
 291                 LDCMD=$(CC);\
 292                 LDFLAGS=""; \
 293                 LIBDEPS="$(LIBDEPS) -lc"; \
 294                 APPNAME="$(APPNAME)"
 295         fi; \
 296         $(LINK_APP)
 297
 298 # The difference between alpha-osf1-shared and tru64-shared is the `-msym'
 299 # option passed to the linker.
 300 link_o.tru64:
 301         @ if ${DETECT_GNU_LD}; then \
 302                 $(DO_GNU_SO); \
 303         else \
 304                 SHLIB=lib$(LIBNAME).so; \
 305                 SHLIB_SUFFIX=; \
 306                 LIBDEPS="$(LIBDEPS) -lc"; \
 307                 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
 308                 if [ -n "$$SHLIB_HIST" ]; then \
 309                         SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
 310                 else \
 311                         SHLIB_HIST="$(LIBVERSION)"; \
 312                 fi; \
 313                 SHLIB_SOVER=; \
 314                 ALLSYMSFLAGS='-all'; \
 315                 NOALLSYMSFLAGS='-none'; \
 316                 SHAREDFLAGS="-shared -msym -rpath $(LIBRPATH)"; \
 317                 SHAREDCMD='$(CC)'; \
 318                 if [ -n "$$SHLIB_HIST" ]; then \
 319                         SHAREDFLAGS="$$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
 320                 fi; \
 321         fi; \
 322         $(LINK_SO_O)
 323 link_a.tru64:
 324         @ if ${DETECT_GNU_LD}; then \
 325                 $(DO_GNU_SO); \
 326         else \
 327                 SHLIB=lib$(LIBNAME).so; \
 328                 SHLIB_SUFFIX=; \
 329                 LIBDEPS="$(LIBDEPS) -lc"; \
 330                 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
 331                 if [ -n "$$SHLIB_HIST" ]; then \
 332                         SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
 333                 else \
 334                         SHLIB_HIST="$(LIBVERSION)"; \
 335                 fi; \
 336                 SHLIB_SOVER=; \
 337                 ALLSYMSFLAGS='-all'; \
 338                 NOALLSYMSFLAGS='-none'; \
 339                 SHAREDFLAGS="-shared -msym -rpath $(LIBRPATH)"; \
 340                 SHAREDCMD='$(CC)'; \
 341                 if [ -n "$$SHLIB_HIST" ]; then \
 342                         SHAREDFLAGS="$$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
 343                 fi; \
 344         fi; \
 345         $(LINK_SO_A)
 346 link_app.tru64:
 347         @ if ${DETECT_GNU_LD}; then \
 348                 $(DO_GNU_APP); \
 349         else \
 350                 LDCMD=$(CC);\
 351                 LDFLAGS="-rpath $(LIBRPATH)"; \
 352                 LIBDEPS="$(LIBDEPS) -lc"; \
 353                 APPNAME="$(APPNAME)"; \
 354         fi; \
 355         $(LINK_APP)
 356
 357 # The difference between tru64-shared and tru64-shared-rpath is the
 358 # -rpath ${LIBRPATH} passed to the linker.
 359 link_o.tru64-rpath:
 360         @ if ${DETECT_GNU_LD}; then \
 361                 $(DO_GNU_SO); \
 362         else \
 363                 SHLIB=lib$(LIBNAME).so; \
 364                 SHLIB_SUFFIX=; \
 365                 LIBDEPS="$(LIBDEPS) -lc"; \
 366                 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
 367                 if [ -n "$$SHLIB_HIST" ]; then \
 368                         SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
 369                 else \
 370                         SHLIB_HIST="$(LIBVERSION)"; \
 371                 fi; \
 372                 SHLIB_SOVER=; \
 373                 ALLSYMSFLAGS='-all'; \
 374                 NOALLSYMSFLAGS='-none'; \
 375                 SHAREDFLAGS="-shared -msym -rpath $(LIBRPATH)"; \
 376                 SHAREDCMD='$(CC)'; \
 377                 if [ -n "$$SHLIB_HIST" ]; then \
 378                         SHAREDFLAGS="$$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
 379                 fi; \
 380         fi; \
 381         $(LINK_SO_O)
 382 link_a.tru64-rpath:
 383         @ if ${DETECT_GNU_LD}; then \
 384                 $(DO_GNU_SO); \
 385         else \
 386                 SHLIB=lib$(LIBNAME).so; \
 387                 SHLIB_SUFFIX=; \
 388                 LIBDEPS="$(LIBDEPS) -lc"; \
 389                 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
 390                 if [ -n "$$SHLIB_HIST" ]; then \
 391                         SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
 392                 else \
 393                         SHLIB_HIST="$(LIBVERSION)"; \
 394                 fi; \
 395                 SHLIB_SOVER=; \
 396                 ALLSYMSFLAGS='-all'; \
 397                 NOALLSYMSFLAGS='-none'; \
 398                 SHAREDFLAGS="-shared -msym -rpath $(LIBRPATH)"; \
 399                 SHAREDCMD='$(CC)'; \
 400                 if [ -n "$$SHLIB_HIST" ]; then \
 401                         SHAREDFLAGS="$$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
 402                 fi; \
 403         fi; \
 404         $(LINK_SO_A)
 405 link_app.tru64-rpath:
 406         @ if ${DETECT_GNU_LD}; then \
 407                 $(DO_GNU_APP); \
 408         else \
 409                 LDCMD=$(CC);\
 410                 LDFLAGS="-rpath $(LIBRPATH)"; \
 411                 LIBDEPS="$(LIBDEPS) -lc"; \
 412                 APPNAME="$(APPNAME)"; \
 413         fi; \
 414         $(LINK_APP)
 415
 416 link_o.solaris:
 417         @ if ${DETECT_GNU_LD}; then \
 418                 $(DO_GNU_SO); \
 419         else \
 420                 $(CALC_VERSIONS); \
 421                 MINUSZ='-z '; \
 422                 (${CC} -v 2>&1 | grep gcc) > /dev/null && MINUSZ='-Wl,-z,'; \
 423                 SHLIB=lib$(LIBNAME).so; \
 424                 SHLIB_SUFFIX=; \
 425                 LIBDEPS="$(LIBDEPS) -lc"; \
 426                 ALLSYMSFLAGS="$${MINUSZ}allextract"; \
 427                 NOALLSYMSFLAGS="$${MINUSZ}defaultextract"; \
 428                 SHAREDFLAGS="-G -dy -z text -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX -R $(LIBRPATH)"; \
 429                 SHAREDCMD='$(CC)'; \
 430         fi; \
 431         $(LINK_SO_O)
 432 link_a.solaris:
 433         @ if ${DETECT_GNU_LD}; then \
 434                 $(DO_GNU_SO); \
 435         else \
 436                 $(CALC_VERSIONS); \
 437                 MINUSZ='-z '; \
 438                 (${CC} -v 2>&1 | grep gcc) > /dev/null && MINUSZ='-Wl,-z,'; \
 439                 SHLIB=lib$(LIBNAME).so; \
 440                 SHLIB_SUFFIX=;\
 441                 LIBDEPS="$(LIBDEPS) -lc"; \
 442                 ALLSYMSFLAGS="$${MINUSZ}allextract"; \
 443                 NOALLSYMSFLAGS="$${MINUSZ}defaultextract"; \
 444                 SHAREDFLAGS="-G -dy -z text -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX -R $(LIBRPATH)"; \
 445                 SHAREDCMD='$(CC)'; \
 446         fi; \
 447         $(LINK_SO_A)
 448 link_app.solaris:
 449         @ if ${DETECT_GNU_LD}; then \
 450                 $(DO_GNU_APP); \
 451         else \
 452                 LDCMD=$(CC);\
 453                 LDFLAGS="-R $(LIBRPATH)"; \
 454                 LIBDEPS="$(LIBDEPS) -lc"; \
 455                 APPNAME="$(APPNAME)"; \
 456         fi; \
 457         $(LINK_APP)
 458
 459 # OpenServer 5 native compilers used
 460 link_o.svr3:
 461         @ if ${DETECT_GNU_LD}; then \
 462                 $(DO_GNU_SO); \
 463         else \
 464                 $(CALC_VERSIONS); \
 465                 SHLIB=lib$(LIBNAME).so; \
 466                 SHLIB_SUFFIX=; \
 467                 LIBDEPS="$(LIBDEPS) -lc"; \
 468                 ALLSYMSFLAGS=''; \
 469                 NOALLSYMSFLAGS=''; \
 470                 SHAREDFLAGS="-G -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 471                 SHAREDCMD='$(CC)'; \
 472         fi; \
 473         $(LINK_SO_O)
 474 link_a.svr3:
 475         @ if ${DETECT_GNU_LD}; then \
 476                 $(DO_GNU_SO); \
 477         else \
 478                 $(CALC_VERSIONS); \
 479                 SHLIB=lib$(LIBNAME).so; \
 480                 SHLIB_SUFFIX=; \
 481                 LIBDEPS="$(LIBDEPS) -lc"; \
 482                 ALLSYMSFLAGS=''; \
 483                 NOALLSYMSFLAGS=''; \
 484                 SHAREDFLAGS="-G -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 485                 SHAREDCMD='$(CC)'; \
 486         fi; \
 487         $(LINK_SO_A_UNPACKED)
 488 link_app.svr3:
 489         @ if ${DETECT_GNU_LD}; then \
 490                 $(DO_GNU_APP); \
 491         else \
 492                 LDCMD=$(CC);\
 493                 LDFLAGS=""; \
 494                 LIBDEPS="$(LIBDEPS) -lc"; \
 495                 APPNAME="$(APPNAME)"; \
 496         fi; \
 497         $(LINK_APP)
 498
 499 # UnixWare 7 and OpenUNIX 8 native compilers used
 500 link_o.svr5:
 501         @ if ${DETECT_GNU_LD}; then \
 502                 $(DO_GNU_SO); \
 503         else \
 504                 $(CALC_VERSIONS); \
 505                 SHARE_FLAG='-G'; \
 506                 (${CC} -v 2>&1 | grep gcc) > /dev/null && SHARE_FLAG='-shared'; \
 507                 SHLIB=lib$(LIBNAME).so; \
 508                 SHLIB_SUFFIX=; \
 509                 LIBDEPS="$(LIBDEPS) -lc"; \
 510                 ALLSYMSFLAGS=''; \
 511                 NOALLSYMSFLAGS=''; \
 512                 SHAREDFLAGS="$${SHARE_FLAG} -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 513                 SHAREDCMD='$(CC)'; \
 514         fi; \
 515         $(LINK_SO_O)
 516 link_a.svr5:
 517         @ if ${DETECT_GNU_LD}; then \
 518                 $(DO_GNU_SO); \
 519         else \
 520                 $(CALC_VERSIONS); \
 521                 SHARE_FLAG='-G'; \
 522                 (${CC} -v 2>&1 | grep gcc) > /dev/null && SHARE_FLAG='-shared'; \
 523                 SHLIB=lib$(LIBNAME).so; \
 524                 SHLIB_SUFFIX=; \
 525                 LIBDEPS="$(LIBDEPS) -lc"; \
 526                 ALLSYMSFLAGS=''; \
 527                 NOALLSYMSFLAGS=''; \
 528                 SHAREDFLAGS="$${SHARE_FLAG} -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 529                 SHAREDCMD='$(CC)'; \
 530         fi; \
 531         $(LINK_SO_A_UNPACKED)
 532 link_app.svr5:
 533         @ if ${DETECT_GNU_LD}; then \
 534                 $(DO_GNU_APP); \
 535         else \
 536                 LDCMD=$(CC);\
 537                 LDFLAGS=""; \
 538                 LIBDEPS="$(LIBDEPS) -lc"; \
 539                 APPNAME="$(APPNAME)"; \
 540         fi; \
 541         $(LINK_APP)
 542
 543 link_o.irix:
 544         @ if ${DETECT_GNU_LD}; then \
 545                 $(DO_GNU_SO); \
 546         else \
 547                 $(CALC_VERSIONS); \
 548                 SHLIB=lib$(LIBNAME).so; \
 549                 SHLIB_SUFFIX=; \
 550                 LIBDEPS="$(LIBDEPS) -lc"; \
 551                 MINUSWL=""; \
 552                 ($(CC) -v 2>&1 | grep gcc) > /dev/null && MINUSWL="-Wl,"; \
 553                 ALLSYMSFLAGS="$${MINUSWL}-all"; \
 554                 NOALLSYMSFLAGS="$${MINUSWL}-notall"; \
 555                 SHAREDFLAGS="-shared -Wl,-soname,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX -Wl,-rpath,$(LIBRPATH)"; \
 556                 SHAREDCMD='$(CC)'; \
 557         fi; \
 558         $(LINK_SO_O)
 559 link_a.irix:
 560         @ if ${DETECT_GNU_LD}; then \
 561                 $(DO_GNU_SO); \
 562         else \
 563                 $(CALC_VERSIONS); \
 564                 SHLIB=lib$(LIBNAME).so; \
 565                 SHLIB_SUFFIX=; \
 566                 LIBDEPS="$(LIBDEPS) -lc"; \
 567                 MINUSWL=""; \
 568                 ($(CC) -v 2>&1 | grep gcc) > /dev/null && MINUSWL="-Wl,"; \
 569                 ALLSYMSFLAGS="$${MINUSWL}-all"; \
 570                 NOALLSYMSFLAGS="$${MINUSWL}-notall"; \
 571                 SHAREDFLAGS="-shared -Wl,-soname,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX -Wl,-rpath,$(LIBRPATH)"; \
 572                 SHAREDCMD='$(CC)'; \
 573         fi; \
 574         $(LINK_SO_A)
 575 link_app.irix:
 576         @ if ${DETECT_GNU_LD}; then \
 577                 $(DO_GNU_APP); \
 578         else \
 579                 LDCMD=$(CC);\
 580                 LDFLAGS="-Wl,-rpath,$(LIBRPATH)"; \
 581                 LIBDEPS="$(LIBDEPS) -lc"; \
 582                 APPNAME="$(APPNAME)"; \
 583         fi; \
 584         $(LINK_APP)
 585
 586 # 32-bit PA-RISC HP-UX embeds the -L pathname of libs we link with, so
 587 # we compensate for it with +cdp ../: and +cdp ./:. Yes, these rewrite
 588 # rules imply that we can only link one level down in catalog structure,
 589 # but that's what takes place for the moment of this writing. +cdp option
 590 # was introduced in HP-UX 11.x and applies in 32-bit PA-RISC link
 591 # editor context only [it's simply ignored in other cases, which are all
 592 # ELFs by the way].
 593 #
 594 link_o.hpux:
 595         @if ${DETECT_GNU_LD}; then $(DO_GNU_SO); else \
 596         $(CALC_VERSIONS); \
 597         SHLIB=lib$(LIBNAME).sl; \
 598         expr $(PLATFORM) : 'ia64' > /dev/null && SHLIB=lib$(LIBNAME).so; \
 599         SHLIB_SUFFIX=; \
 600         LIBDEPS="$(LIBDEPS)"; \
 601         ALLSYMSFLAGS='-Wl,-Fl'; \
 602         NOALLSYMSFLAGS=''; \
 603         expr $(PLATFORM) : 'hpux64' > /dev/null && ALLSYMSFLAGS='-Wl,+forceload'; \
 604         SHAREDFLAGS="-Wl,-B,symbolic,+vnocompatwarnings,-z,+s,+cdp,../:,+cdp,./:,+h,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX,+b,$(LIBRPATH)"; \
 605         SHAREDCMD=$(CC); \
 606         fi; \
 607         $(LINK_SO_O) && chmod a=rx $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX
 608 link_a.hpux:
 609         @if ${DETECT_GNU_LD}; then $(DO_GNU_SO); else \
 610         $(CALC_VERSIONS); \
 611         SHLIB=lib$(LIBNAME).sl; \
 612         SHLIB_SUFFIX=; \
 613         LIBDEPS="$(LIBDEPS)"; \
 614         ALLSYMSFLAGS='-Wl,-Fl'; \
 615         NOALLSYMSFLAGS=''; \
 616         expr $(PLATFORM) : 'hpux64' > /dev/null && ALLSYMSFLAGS='-Wl,+forceload'; \
 617         SHAREDFLAGS="-Wl,-B,symbolic,+vnocompatwarnings,-z,+s,+cdp,../:,+cdp,./:,+h,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX,+b,$(LIBRPATH)"; \
 618         SHAREDCMD='$(CC)'; \
 619         fi; \
 620         $(LINK_SO_A) && chmod a=rx $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX
 621 link_app.hpux:
 622         @if ${DETECT_GNU_LD}; then $(DO_GNU_APP); else \
 623         LDCMD=$(CC);\
 624         LDFLAGS="-Wl,+s,+cdp,../:,+cdp,./:,+b,$(LIBRPATH)"; \
 625         LIBDEPS="$(LIBDEPS)"; \
 626         APPNAME="$(APPNAME)"; \
 627         fi; \
 628         $(LINK_APP)
 629
 630 link_o.aix:
 631         @ $(CALC_VERSIONS); \
 632         SHLIB=lib$(LIBNAME).so; \
 633         SHLIB_SUFFIX=; \
 634         LIBDEPS="$(LIBDEPS) -lc"; \
 635         ALLSYMSFLAGS='-bnogc'; \
 636         NOALLSYMSFLAGS=''; \
 637         SHAREDFLAGS='-G -bE:lib$(LIBNAME).exp -bM:SRE -blibpath:$(LIBRPATH)'; \
 638         SHAREDCMD='$(CC)'; \
 639         $(LINK_SO_O)
 640 link_a.aix:
 641         @ $(CALC_VERSIONS); \
 642         SHLIB=lib$(LIBNAME).so; \
 643         SHLIB_SUFFIX=; \
 644         LIBDEPS="$(LIBDEPS) -lc"; \
 645         ALLSYMSFLAGS='-bnogc'; \
 646         NOALLSYMSFLAGS=''; \
 647         SHAREDFLAGS='-G -bE:lib$(LIBNAME).exp -bM:SRE -blibpath:$(LIBRPATH)'; \
 648         SHAREDCMD='$(CC)'; \
 649         $(LINK_SO_A_VIA_O)
 650 link_app.aix:
 651         LDCMD=$(CC);\
 652         LDFLAGS="-blibpath:$(LIBRPATH)"; \
 653         LIBDEPS="$(LIBDEPS) -lc"; \
 654         APPNAME="$(APPNAME)"
 655         $(LINK_APP)
 656
 657 link_o.reliantunix:
 658         @ $(CALC_VERSIONS); \
 659         SHLIB=lib$(LIBNAME).so; \
 660         SHLIB_SUFFIX=; \
 661         LIBDEPS="$(LIBDEPS) -lc"; \
 662         ALLSYMSFLAGS=; \
 663         NOALLSYMSFLAGS=''; \
 664         SHAREDFLAGS='-G'; \
 665         SHAREDCMD='$(CC)'; \
 666         $(LINK_SO_O)
 667 link_a.reliantunix:
 668         @ $(CALC_VERSIONS); \
 669         SHLIB=lib$(LIBNAME).so; \
 670         SHLIB_SUFFIX=; \
 671         LIBDEPS="$(LIBDEPS) -lc"; \
 672         ALLSYMSFLAGS=; \
 673         NOALLSYMSFLAGS=''; \
 674         SHAREDFLAGS='-G'; \
 675         SHAREDCMD='$(CC)'; \
 676         $(LINK_SO_A_UNPACKED)
 677 link_app.reliantunix:
 678         LDCMD=$(CC);\
 679         LDFLAGS=""; \
 680         LIBDEPS="$(LIBDEPS) -lc"; \
 681         APPNAME="$(APPNAME)"
 682         $(LINK_APP)
 683
 684 # Targets to build symbolic links when needed
 685 symlink.gnu symlink.solaris symlink.svr3 symlink.svr5 symlink.irix \
 686 symlink.aix symlink.reliantunix:
 687         @ $(CALC_VERSIONS); \
 688         SHLIB=lib$(LIBNAME).so; \
 689         $(SYMLINK_SO)
 690 symlink.darwin:
 691         @ $(CALC_VERSIONS); \
 692         SHLIB=lib$(LIBNAME); \
 693         SHLIB_SUFFIX=.dylib; \
 694         $(SYMLINK_SO)
 695 symlink.hpux:
 696         @ $(CALC_VERSIONS); \
 697         SHLIB=lib$(LIBNAME).sl; \
 698         $(SYMLINK_SO)
 699 # The following lines means those specific architectures do no symlinks
 700 symlink.cygwin symlib.alpha-osf1 symlink.tru64 symlink.tru64-rpath:
 701
 702 # Compatibility targets
 703 link_o.bsd-gcc-shared link_o.linux-shared link_o.gnu-shared: link_o.gnu
 704 link_a.bsd-gcc-shared link_a.linux-shared link_a.gnu-shared: link_a.gnu
 705 link_app.bsd-gcc-shared link_app.linux-shared link_app.gnu-shared: link_app.gnu
 706 symlink.bsd-gcc-shared symlink.linux-shared symlink.gnu-shared: symlink.gnu
 707 link_o.darwin-shared: link_o.darwin
 708 link_a.darwin-shared: link_a.darwin
 709 link_app.darwin-shared: link_app.darwin
 710 symlink.darwin-shared: symlink.darwin
 711 link_o.cygwin-shared: link_o.cygwin
 712 link_a.cygwin-shared: link_a.cygwin
 713 link_app.cygwin-shared: link_app.cygwin
 714 symlink.cygwin-shared: symlink.cygwin
 715 link_o.alpha-osf1-shared: link_o.alpha-osf1
 716 link_a.alpha-osf1-shared: link_a.alpha-osf1
 717 link_app.alpha-osf1-shared: link_app.alpha-osf1
 718 symlink.alpha-osf1-shared: symlink.alpha-osf1
 719 link_o.tru64-shared: link_o.tru64
 720 link_a.tru64-shared: link_a.tru64
 721 link_app.tru64-shared: link_app.tru64
 722 symlink.tru64-shared: symlink.tru64
 723 link_o.tru64-shared-rpath: link_o.tru64-rpath
 724 link_a.tru64-shared-rpath: link_a.tru64-rpath
 725 link_app.tru64-shared-rpath: link_app.tru64-rpath
 726 symlink.tru64-shared-rpath: symlink.tru64-rpath
 727 link_o.solaris-shared: link_o.solaris
 728 link_a.solaris-shared: link_a.solaris
 729 link_app.solaris-shared: link_app.solaris
 730 symlink.solaris-shared: symlink.solaris
 731 link_o.svr3-shared: link_o.svr3
 732 link_a.svr3-shared: link_a.svr3
 733 link_app.svr3-shared: link_app.svr3
 734 symlink.svr3-shared: symlink.svr3
 735 link_o.svr5-shared: link_o.svr5
 736 link_a.svr5-shared: link_a.svr5
 737 link_app.svr5-shared: link_app.svr5
 738 symlink.svr5-shared: symlink.svr5
 739 link_o.irix-shared: link_o.irix
 740 link_a.irix-shared: link_a.irix
 741 link_app.irix-shared: link_app.irix
 742 symlink.irix-shared: symlink.irix
 743 link_o.hpux-shared: link_o.hpux
 744 link_a.hpux-shared: link_a.hpux
 745 link_app.hpux-shared: link_app.hpux
 746 symlink.hpux-shared: symlink.hpux
 747 link_o.aix-shared: link_o.aix
 748 link_a.aix-shared: link_a.aix
 749 link_app.aix-shared: link_app.aix
 750 symlink.aix-shared: symlink.aix
 751 link_o.reliantunix-shared: link_o.reliantunix
 752 link_a.reliantunix-shared: link_a.reliantunix
 753 link_app.reliantunix-shared: link_app.reliantunix
 754 symlink.reliantunix-shared: symlink.reliantunix