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 #SET_X=:
  70 SET_X=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   ( $(SET_X);   \
  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 -o $$APPNAME $(OBJECTS) $$LIBDEPS )
  95
  96 LINK_SO=        \
  97   ( $(SET_X);   \
  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 $$SHAREDFLAGS -o $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX \
 103         $$ALLSYMSFLAGS $$SHOBJECTS $$NOALLSYMSFLAGS $$LIBDEPS ) && \
 104   $(SYMLINK_SO); ( $(SET_X); rm -f lib$(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                                 ( $(SET_X); 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 "$$SHLIB_SOVER" ]; then \
 116                         ( $(SET_X); rm -f $$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=$$ALLSYMSFLAGS; ALLSYMSFLAGS=; NOALLSYMSFLAGS=; \
 126   ( $(SET_X); \
 127     ld $(LDFLAGS) -r -o lib$(LIBNAME).o $$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 $$UNPACKDIR
 135
 136 DETECT_GNU_LD=(${CC} -Wl,-V /dev/null 2>&1 | grep '^GNU ld' )>/dev/null
 137
 138 DO_GNU_SO=$(CALC_VERSIONS); \
 139         SHLIB=lib$(LIBNAME).so; \
 140         SHLIB_SUFFIX=; \
 141         LIBDEPS="$(LIBDEPS)"; \
 142         ALLSYMSFLAGS='-Wl,--whole-archive'; \
 143         NOALLSYMSFLAGS='-Wl,--no-whole-archive'; \
 144         SHAREDFLAGS="$(CFLAGS) -shared -Wl,-Bsymbolic -Wl,-soname=$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX -Wl,-rpath,$(LIBRPATH)"; \
 145         SHAREDCMD='$(CC)'
 146 DO_GNU_APP=LDCMD=$(CC);\
 147         LDFLAGS="$(CFLAGS) -Wl,-rpath,$(LIBRPATH)"; \
 148         LIBDEPS="$(LIBDEPS)"; \
 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="$(CFLAGS)"; \
 159         LIBDEPS="$(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 link_o.bsd:
 171         @if ${DETECT_GNU_LD}; then $(DO_GNU_SO); else \
 172         $(CALC_VERSIONS); \
 173         SHLIB=lib$(LIBNAME).so; \
 174         SHLIB_SUFFIX=; \
 175         LIBDEPS=; \
 176         ALLSYMSFLAGS="-Wl,-Bforcearchive"; \
 177         NOALLSYMSFLAGS=; \
 178         SHAREDFLAGS="$(CFLAGS) -shared -nostdlib"; \
 179         SHAREDCMD=$(CC); \
 180         fi; $(LINK_SO_O)
 181 link_a.bsd:
 182         @if ${DETECT_GNU_LD}; then $(DO_GNU_SO); else \
 183         $(CALC_VERSIONS); \
 184         SHLIB=lib$(LIBNAME).so; \
 185         SHLIB_SUFFIX=; \
 186         LIBDEPS=; \
 187         ALLSYMSFLAGS="-Wl,-Bforcearchive"; \
 188         NOALLSYMSFLAGS=; \
 189         SHAREDFLAGS="$(CFLAGS) -shared -nostdlib"; \
 190         SHAREDCMD=$(CC); \
 191         fi; $(LINK_SO_A)
 192 link_app.bsd:
 193         @if ${DETECT_GNU_LD}; then $(DO_GNU_APP); else \
 194         LDCMD=$(CC); \
 195         LDFLAGS="$(CFLAGS) -Wl,-rpath,$(LIBPATH)"; \
 196         LIBDEPS="$(LIBDEPS)"; \
 197         APPNAME="$(APPNAME)"; \
 198         fi; $(LINK_APP)
 199
 200 # For Darwin AKA Mac OS/X (dyld)
 201 link_o.darwin:
 202         @ $(CALC_VERSIONS); \
 203         SHLIB=lib$(LIBNAME); \
 204         SHLIB_SUFFIX=.dylib; \
 205         LIBDEPS="$(LIBDEPS)"; \
 206         ALLSYMSFLAGS='-all_load'; \
 207         NOALLSYMSFLAGS=''; \
 208         SHAREDFLAGS="$(CFLAGS) -dynamiclib"; \
 209         SHAREDCMD='$(CC)'; \
 210         if [ -n "$(LIBVERSION)" ]; then \
 211                 SHAREDFLAGS="$$SHAREDFLAGS -current_version $(LIBVERSION)"; \
 212         fi; \
 213         if [ -n "$$SHLIB_SOVER_NODOT" ]; then \
 214                 SHAREDFLAGS="$$SHAREDFLAGS -compatibility_version $$SHLIB_SOVER_NODOT"; \
 215         fi; \
 216         $(LINK_SO_O)
 217 link_a.darwin:
 218         @ $(CALC_VERSIONS); \
 219         SHLIB=lib$(LIBNAME); \
 220         SHLIB_SUFFIX=.dylib; \
 221         LIBDEPS="$(LIBDEPS)"; \
 222         ALLSYMSFLAGS='-all_load'; \
 223         NOALLSYMSFLAGS=''; \
 224         SHAREDFLAGS="$(CFLAGS) -dynamiclib"; \
 225         SHAREDCMD='$(CC)'; \
 226         if [ -n "$(LIBVERSION)" ]; then \
 227                 SHAREDFLAGS="$$SHAREDFLAGS -current_version $(LIBVERSION)"; \
 228         fi; \
 229         if [ -n "$$SHLIB_SOVER_NODOT" ]; then \
 230                 SHAREDFLAGS="$$SHAREDFLAGS -compatibility_version $$SHLIB_SOVER_NODOT"; \
 231         fi; \
 232         $(LINK_SO_A)
 233 link_app.darwin:
 234         LDCMD=$(CC);\
 235         LDFLAGS="$(CFLAGS)"; \
 236         LIBDEPS="$(LIBDEPS)"; \
 237         APPNAME="$(APPNAME)"; \
 238         $(LINK_APP)
 239
 240 link_o.cygwin:
 241         @ $(CALC_VERSIONS); \
 242         INHIBIT_SYMLINKS=yes; \
 243         SHLIB=cyg$(LIBNAME); \
 244         expr $(PLATFORM) : 'mingw' > /dev/null && SHLIB=$(LIBNAME)eay32; \
 245         SHLIB_SUFFIX=.dll; \
 246         LIBDEPS="$(LIBDEPS)"; \
 247         SHLIB_SOVER=-$(LIBVERSION); \
 248         ALLSYMSFLAGS='-Wl,--whole-archive'; \
 249         NOALLSYMSFLAGS='-Wl,--no-whole-archive'; \
 250         SHAREDFLAGS="$(CFLAGS) -Wl,-Bsymbolic -Wl,--out-implib,lib$(LIBNAME).dll.a"; \
 251         SHAREDCMD='${CC}'; \
 252         $(LINK_SO_O)
 253 link_a.cygwin:
 254         @ $(CALC_VERSIONS); \
 255         INHIBIT_SYMLINKS=yes; \
 256         SHLIB=cyg$(LIBNAME); \
 257         expr $(PLATFORM) : 'mingw' > /dev/null && SHLIB=$(LIBNAME)eay32; \
 258         SHLIB_SUFFIX=.dll; \
 259         LIBDEPS="$(LIBDEPS)"; \
 260         SHLIB_SOVER=; \
 261         ALLSYMSFLAGS='-Wl,--whole-archive'; \
 262         NOALLSYMSFLAGS='-Wl,--no-whole-archive'; \
 263         SHAREDFLAGS="$(CFLAGS) -Wl,-Bsymbolic -Wl,--out-implib,lib$(LIBNAME).dll.a"; \
 264         SHAREDCMD='${CC}'; \
 265         $(LINK_SO_A)
 266 link_app.cygwin:
 267         LDCMD=$(CC);\
 268         LDFLAGS="$(CFLAGS)"; \
 269         LIBDEPS="$(LIBDEPS)"; \
 270         APPNAME="$(APPNAME)"; \
 271         $(LINK_APP)
 272
 273 link_o.alpha-osf1:
 274         @ if ${DETECT_GNU_LD}; then \
 275                 $(DO_GNU_SO); \
 276         else \
 277                 SHLIB=lib$(LIBNAME).so; \
 278                 SHLIB_SUFFIX=; \
 279                 LIBDEPS="$(LIBDEPS)"; \
 280                 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
 281                 if [ -n "$$SHLIB_HIST" ]; then \
 282                         SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
 283                 else \
 284                         SHLIB_HIST="$(LIBVERSION)"; \
 285                 fi; \
 286                 SHLIB_SOVER=; \
 287                 ALLSYMSFLAGS='-all'; \
 288                 NOALLSYMSFLAGS='-none'; \
 289                 SHAREDFLAGS="$(CFLAGS) -shared"; \
 290                 SHAREDCMD='$(CC)'; \
 291                 if [ -n "$$SHLIB_HIST" ]; then \
 292                         SHAREDFLAGS="$$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
 293                 fi; \
 294         fi; \
 295         $(LINK_SO_O)
 296 link_a.alpha-osf1:
 297         @ if ${DETECT_GNU_LD}; then \
 298                 $(DO_GNU_SO); \
 299         else \
 300                 SHLIB=lib$(LIBNAME).so; \
 301                 SHLIB_SUFFIX=; \
 302                 LIBDEPS="$(LIBDEPS)"; \
 303                 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
 304                 if [ -n "$$SHLIB_HIST" ]; then \
 305                         SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
 306                 else \
 307                         SHLIB_HIST="$(LIBVERSION)"; \
 308                 fi; \
 309                 SHLIB_SOVER=; \
 310                 ALLSYMSFLAGS='-all'; \
 311                 NOALLSYMSFLAGS='-none'; \
 312                 SHAREDFLAGS="$(CFLAGS) -shared"; \
 313                 SHAREDCMD='$(CC)'; \
 314                 if [ -n "$$SHLIB_HIST" ]; then \
 315                         SHAREDFLAGS="$$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
 316                 fi; \
 317         fi; \
 318         $(LINK_SO_A)
 319 link_app.alpha-osf1:
 320         @ if ${DETECT_GNU_LD}; then \
 321                 $(DO_GNU_APP); \
 322         else \
 323                 LDCMD=$(CC);\
 324                 LDFLAGS="$(CFLAGS)"; \
 325                 LIBDEPS="$(LIBDEPS)"; \
 326                 APPNAME="$(APPNAME)"
 327         fi; \
 328         $(LINK_APP)
 329
 330 # The difference between alpha-osf1-shared and tru64-shared is the `-msym'
 331 # option passed to the linker.
 332 link_o.tru64:
 333         @ if ${DETECT_GNU_LD}; then \
 334                 $(DO_GNU_SO); \
 335         else \
 336                 SHLIB=lib$(LIBNAME).so; \
 337                 SHLIB_SUFFIX=; \
 338                 LIBDEPS="$(LIBDEPS)"; \
 339                 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
 340                 if [ -n "$$SHLIB_HIST" ]; then \
 341                         SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
 342                 else \
 343                         SHLIB_HIST="$(LIBVERSION)"; \
 344                 fi; \
 345                 SHLIB_SOVER=; \
 346                 ALLSYMSFLAGS='-all'; \
 347                 NOALLSYMSFLAGS='-none'; \
 348                 SHAREDFLAGS="$(CFLAGS) -shared -msym -rpath $(LIBRPATH)"; \
 349                 SHAREDCMD='$(CC)'; \
 350                 if [ -n "$$SHLIB_HIST" ]; then \
 351                         SHAREDFLAGS="$$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
 352                 fi; \
 353         fi; \
 354         $(LINK_SO_O)
 355 link_a.tru64:
 356         @ if ${DETECT_GNU_LD}; then \
 357                 $(DO_GNU_SO); \
 358         else \
 359                 SHLIB=lib$(LIBNAME).so; \
 360                 SHLIB_SUFFIX=; \
 361                 LIBDEPS="$(LIBDEPS)"; \
 362                 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
 363                 if [ -n "$$SHLIB_HIST" ]; then \
 364                         SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
 365                 else \
 366                         SHLIB_HIST="$(LIBVERSION)"; \
 367                 fi; \
 368                 SHLIB_SOVER=; \
 369                 ALLSYMSFLAGS='-all'; \
 370                 NOALLSYMSFLAGS='-none'; \
 371                 SHAREDFLAGS="$(CFLAGS) -shared -msym -rpath $(LIBRPATH)"; \
 372                 SHAREDCMD='$(CC)'; \
 373                 if [ -n "$$SHLIB_HIST" ]; then \
 374                         SHAREDFLAGS="$$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
 375                 fi; \
 376         fi; \
 377         $(LINK_SO_A)
 378 link_app.tru64:
 379         @ if ${DETECT_GNU_LD}; then \
 380                 $(DO_GNU_APP); \
 381         else \
 382                 LDCMD=$(CC);\
 383                 LDFLAGS="$(CFLAGS) -rpath $(LIBRPATH)"; \
 384                 LIBDEPS="$(LIBDEPS)"; \
 385                 APPNAME="$(APPNAME)"; \
 386         fi; \
 387         $(LINK_APP)
 388
 389 # The difference between tru64-shared and tru64-shared-rpath is the
 390 # -rpath ${LIBRPATH} passed to the linker.
 391 link_o.tru64-rpath:
 392         @ if ${DETECT_GNU_LD}; then \
 393                 $(DO_GNU_SO); \
 394         else \
 395                 SHLIB=lib$(LIBNAME).so; \
 396                 SHLIB_SUFFIX=; \
 397                 LIBDEPS="$(LIBDEPS)"; \
 398                 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
 399                 if [ -n "$$SHLIB_HIST" ]; then \
 400                         SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
 401                 else \
 402                         SHLIB_HIST="$(LIBVERSION)"; \
 403                 fi; \
 404                 SHLIB_SOVER=; \
 405                 ALLSYMSFLAGS='-all'; \
 406                 NOALLSYMSFLAGS='-none'; \
 407                 SHAREDFLAGS="$(CFLAGS) -shared -msym -rpath $(LIBRPATH)"; \
 408                 SHAREDCMD='$(CC)'; \
 409                 if [ -n "$$SHLIB_HIST" ]; then \
 410                         SHAREDFLAGS="$$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
 411                 fi; \
 412         fi; \
 413         $(LINK_SO_O)
 414 link_a.tru64-rpath:
 415         @ if ${DETECT_GNU_LD}; then \
 416                 $(DO_GNU_SO); \
 417         else \
 418                 SHLIB=lib$(LIBNAME).so; \
 419                 SHLIB_SUFFIX=; \
 420                 LIBDEPS="$(LIBDEPS)"; \
 421                 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
 422                 if [ -n "$$SHLIB_HIST" ]; then \
 423                         SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
 424                 else \
 425                         SHLIB_HIST="$(LIBVERSION)"; \
 426                 fi; \
 427                 SHLIB_SOVER=; \
 428                 ALLSYMSFLAGS='-all'; \
 429                 NOALLSYMSFLAGS='-none'; \
 430                 SHAREDFLAGS="$(CFLAGS) -shared -msym -rpath $(LIBRPATH)"; \
 431                 SHAREDCMD='$(CC)'; \
 432                 if [ -n "$$SHLIB_HIST" ]; then \
 433                         SHAREDFLAGS="$$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
 434                 fi; \
 435         fi; \
 436         $(LINK_SO_A)
 437 link_app.tru64-rpath:
 438         @ if ${DETECT_GNU_LD}; then \
 439                 $(DO_GNU_APP); \
 440         else \
 441                 LDCMD=$(CC);\
 442                 LDFLAGS="$(CFLAGS) -rpath $(LIBRPATH)"; \
 443                 LIBDEPS="$(LIBDEPS)"; \
 444                 APPNAME="$(APPNAME)"; \
 445         fi; \
 446         $(LINK_APP)
 447
 448 link_o.solaris:
 449         @ if ${DETECT_GNU_LD}; then \
 450                 $(DO_GNU_SO); \
 451         else \
 452                 $(CALC_VERSIONS); \
 453                 MINUSZ='-z '; \
 454                 (${CC} -v 2>&1 | grep gcc) > /dev/null && MINUSZ='-Wl,-z,'; \
 455                 SHLIB=lib$(LIBNAME).so; \
 456                 SHLIB_SUFFIX=; \
 457                 LIBDEPS="$(LIBDEPS)"; \
 458                 ALLSYMSFLAGS="$${MINUSZ}allextract"; \
 459                 NOALLSYMSFLAGS="$${MINUSZ}defaultextract"; \
 460                 SHAREDFLAGS="$(CFLAGS) -G -dy -z text -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX -R $(LIBRPATH) -Wl,-Bsymbolic"; \
 461                 SHAREDCMD='$(CC)'; \
 462         fi; \
 463         $(LINK_SO_O)
 464 link_a.solaris:
 465         @ if ${DETECT_GNU_LD}; then \
 466                 $(DO_GNU_SO); \
 467         else \
 468                 $(CALC_VERSIONS); \
 469                 MINUSZ='-z '; \
 470                 (${CC} -v 2>&1 | grep gcc) > /dev/null && MINUSZ='-Wl,-z,'; \
 471                 SHLIB=lib$(LIBNAME).so; \
 472                 SHLIB_SUFFIX=;\
 473                 LIBDEPS="$(LIBDEPS)"; \
 474                 ALLSYMSFLAGS="$${MINUSZ}allextract"; \
 475                 NOALLSYMSFLAGS="$${MINUSZ}defaultextract"; \
 476                 SHAREDFLAGS="$(CFLAGS) -G -dy -z text -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX -R $(LIBRPATH) -Wl,-Bsymbolic"; \
 477                 SHAREDCMD='$(CC)'; \
 478         fi; \
 479         $(LINK_SO_A)
 480 link_app.solaris:
 481         @ if ${DETECT_GNU_LD}; then \
 482                 $(DO_GNU_APP); \
 483         else \
 484                 LDCMD=$(CC);\
 485                 LDFLAGS="$(CFLAGS) -R $(LIBRPATH)"; \
 486                 LIBDEPS="$(LIBDEPS)"; \
 487                 APPNAME="$(APPNAME)"; \
 488         fi; \
 489         $(LINK_APP)
 490
 491 # OpenServer 5 native compilers used
 492 link_o.svr3:
 493         @ if ${DETECT_GNU_LD}; then \
 494                 $(DO_GNU_SO); \
 495         else \
 496                 $(CALC_VERSIONS); \
 497                 SHLIB=lib$(LIBNAME).so; \
 498                 SHLIB_SUFFIX=; \
 499                 LIBDEPS="$(LIBDEPS)"; \
 500                 ALLSYMSFLAGS=''; \
 501                 NOALLSYMSFLAGS=''; \
 502                 SHAREDFLAGS="$(CFLAGS) -G -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 503                 SHAREDCMD='$(CC)'; \
 504         fi; \
 505         $(LINK_SO_O)
 506 link_a.svr3:
 507         @ if ${DETECT_GNU_LD}; then \
 508                 $(DO_GNU_SO); \
 509         else \
 510                 $(CALC_VERSIONS); \
 511                 SHLIB=lib$(LIBNAME).so; \
 512                 SHLIB_SUFFIX=; \
 513                 LIBDEPS="$(LIBDEPS)"; \
 514                 ALLSYMSFLAGS=''; \
 515                 NOALLSYMSFLAGS=''; \
 516                 SHAREDFLAGS="$(CFLAGS) -G -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 517                 SHAREDCMD='$(CC)'; \
 518         fi; \
 519         $(LINK_SO_A_UNPACKED)
 520 link_app.svr3:
 521         @ if ${DETECT_GNU_LD}; then \
 522                 $(DO_GNU_APP); \
 523         else \
 524                 LDCMD=$(CC);\
 525                 LDFLAGS="$(CFLAGS)"; \
 526                 LIBDEPS="$(LIBDEPS)"; \
 527                 APPNAME="$(APPNAME)"; \
 528         fi; \
 529         $(LINK_APP)
 530
 531 # UnixWare 7 and OpenUNIX 8 native compilers used
 532 link_o.svr5:
 533         @ if ${DETECT_GNU_LD}; then \
 534                 $(DO_GNU_SO); \
 535         else \
 536                 $(CALC_VERSIONS); \
 537                 SHARE_FLAG='-G'; \
 538                 (${CC} -v 2>&1 | grep gcc) > /dev/null && SHARE_FLAG='-shared'; \
 539                 SHLIB=lib$(LIBNAME).so; \
 540                 SHLIB_SUFFIX=; \
 541                 LIBDEPS="$(LIBDEPS)"; \
 542                 ALLSYMSFLAGS=''; \
 543                 NOALLSYMSFLAGS=''; \
 544                 SHAREDFLAGS="$(CFLAGS) $${SHARE_FLAG} -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 545                 SHAREDCMD='$(CC)'; \
 546         fi; \
 547         $(LINK_SO_O)
 548 link_a.svr5:
 549         @ if ${DETECT_GNU_LD}; then \
 550                 $(DO_GNU_SO); \
 551         else \
 552                 $(CALC_VERSIONS); \
 553                 SHARE_FLAG='-G'; \
 554                 (${CC} -v 2>&1 | grep gcc) > /dev/null && SHARE_FLAG='-shared'; \
 555                 SHLIB=lib$(LIBNAME).so; \
 556                 SHLIB_SUFFIX=; \
 557                 LIBDEPS="$(LIBDEPS)"; \
 558                 ALLSYMSFLAGS=''; \
 559                 NOALLSYMSFLAGS=''; \
 560                 SHAREDFLAGS="$(CFLAGS) $${SHARE_FLAG} -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 561                 SHAREDCMD='$(CC)'; \
 562         fi; \
 563         $(LINK_SO_A_UNPACKED)
 564 link_app.svr5:
 565         @ if ${DETECT_GNU_LD}; then \
 566                 $(DO_GNU_APP); \
 567         else \
 568                 LDCMD=$(CC);\
 569                 LDFLAGS="$(CFLAGS)"; \
 570                 LIBDEPS="$(LIBDEPS)"; \
 571                 APPNAME="$(APPNAME)"; \
 572         fi; \
 573         $(LINK_APP)
 574
 575 link_o.irix:
 576         @ if ${DETECT_GNU_LD}; then \
 577                 $(DO_GNU_SO); \
 578         else \
 579                 $(CALC_VERSIONS); \
 580                 SHLIB=lib$(LIBNAME).so; \
 581                 SHLIB_SUFFIX=; \
 582                 LIBDEPS="$(LIBDEPS)"; \
 583                 MINUSWL=""; \
 584                 ($(CC) -v 2>&1 | grep gcc) > /dev/null && MINUSWL="-Wl,"; \
 585                 ALLSYMSFLAGS="$${MINUSWL}-all"; \
 586                 NOALLSYMSFLAGS="$${MINUSWL}-none"; \
 587                 SHAREDFLAGS="$(CFLAGS) -shared -Wl,-soname,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX -Wl,-rpath,$(LIBRPATH)"; \
 588                 SHAREDCMD='$(CC)'; \
 589         fi; \
 590         $(LINK_SO_O)
 591 link_a.irix:
 592         @ if ${DETECT_GNU_LD}; then \
 593                 $(DO_GNU_SO); \
 594         else \
 595                 $(CALC_VERSIONS); \
 596                 SHLIB=lib$(LIBNAME).so; \
 597                 SHLIB_SUFFIX=; \
 598                 LIBDEPS="$(LIBDEPS)"; \
 599                 MINUSWL=""; \
 600                 ($(CC) -v 2>&1 | grep gcc) > /dev/null && MINUSWL="-Wl,"; \
 601                 ALLSYMSFLAGS="$${MINUSWL}-all"; \
 602                 NOALLSYMSFLAGS="$${MINUSWL}-none"; \
 603                 SHAREDFLAGS="$(CFLAGS) -shared -Wl,-soname,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX -Wl,-rpath,$(LIBRPATH)"; \
 604                 SHAREDCMD='$(CC)'; \
 605         fi; \
 606         $(LINK_SO_A)
 607 link_app.irix:
 608         @ if ${DETECT_GNU_LD}; then \
 609                 $(DO_GNU_APP); \
 610         else \
 611                 LDCMD=$(CC);\
 612                 LDFLAGS="$(CFLAGS) -Wl,-rpath,$(LIBRPATH)"; \
 613                 LIBDEPS="$(LIBDEPS)"; \
 614                 APPNAME="$(APPNAME)"; \
 615         fi; \
 616         $(LINK_APP)
 617
 618 # 32-bit PA-RISC HP-UX embeds the -L pathname of libs we link with, so
 619 # we compensate for it with +cdp ../: and +cdp ./:. Yes, these rewrite
 620 # rules imply that we can only link one level down in catalog structure,
 621 # but that's what takes place for the moment of this writing. +cdp option
 622 # was introduced in HP-UX 11.x and applies in 32-bit PA-RISC link
 623 # editor context only [it's simply ignored in other cases, which are all
 624 # ELFs by the way].
 625 #
 626 link_o.hpux:
 627         @if ${DETECT_GNU_LD}; then $(DO_GNU_SO); else \
 628         $(CALC_VERSIONS); \
 629         SHLIB=lib$(LIBNAME).sl; \
 630         expr $(PLATFORM) : '.*ia64' > /dev/null && SHLIB=lib$(LIBNAME).so; \
 631         SHLIB_SUFFIX=; \
 632         LIBDEPS="$(LIBDEPS)"; \
 633         ALLSYMSFLAGS='-Wl,-Fl'; \
 634         NOALLSYMSFLAGS=''; \
 635         expr $(PLATFORM) : 'hpux64' > /dev/null && ALLSYMSFLAGS='-Wl,+forceload'; \
 636         SHAREDFLAGS="$(CFLAGS) -Wl,-B,symbolic,+vnocompatwarnings,-z,+s,+cdp,../:,+cdp,./:,+h,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX,+b,$(LIBRPATH)"; \
 637         SHAREDCMD=$(CC); \
 638         fi; \
 639         $(LINK_SO_O) && chmod a=rx $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX
 640 link_a.hpux:
 641         @if ${DETECT_GNU_LD}; then $(DO_GNU_SO); else \
 642         $(CALC_VERSIONS); \
 643         SHLIB=lib$(LIBNAME).sl; \
 644         expr $(PLATFORM) : '.*ia64' > /dev/null && SHLIB=lib$(LIBNAME).so; \
 645         SHLIB_SUFFIX=; \
 646         LIBDEPS="$(LIBDEPS)"; \
 647         ALLSYMSFLAGS='-Wl,-Fl'; \
 648         NOALLSYMSFLAGS=''; \
 649         expr $(PLATFORM) : 'hpux64' > /dev/null && ALLSYMSFLAGS='-Wl,+forceload'; \
 650         SHAREDFLAGS="$(CFLAGS) -Wl,-B,symbolic,+vnocompatwarnings,-z,+s,+cdp,../:,+cdp,./:,+h,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX,+b,$(LIBRPATH)"; \
 651         SHAREDCMD='$(CC)'; \
 652         fi; \
 653         $(LINK_SO_A) && chmod a=rx $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX
 654 link_app.hpux:
 655         @if ${DETECT_GNU_LD}; then $(DO_GNU_APP); else \
 656         LDCMD=$(CC);\
 657         LDFLAGS="$(CFLAGS) -Wl,+s,+cdp,../:,+cdp,./:,+b,$(LIBRPATH)"; \
 658         LIBDEPS="$(LIBDEPS)"; \
 659         APPNAME="$(APPNAME)"; \
 660         fi; \
 661         $(LINK_APP)
 662
 663 link_o.aix:
 664         @ $(CALC_VERSIONS); \
 665         OBJECT_MODE=`expr x$(SHARED_LDFLAGS) : 'x\-[a-z]\([0-9]*\)'`; \
 666         OBJECT_MODE=$${OBJECT_MODE:-32}; export OBJECT_MODE; \
 667         SHLIB=lib$(LIBNAME).so; \
 668         SHLIB_SUFFIX=; \
 669         LIBDEPS="$(LIBDEPS)"; \
 670         ALLSYMSFLAGS='-bnogc'; \
 671         NOALLSYMSFLAGS=''; \
 672         SHAREDFLAGS='$(CFLAGS) -G -bE:lib$(LIBNAME).exp -bM:SRE -blibpath:$(LIBRPATH)'; \
 673         SHAREDCMD='$(CC)'; \
 674         $(LINK_SO_O); rm -rf lib$(LIBNAME).exp
 675 link_a.aix:
 676         @ $(CALC_VERSIONS); \
 677         OBJECT_MODE=`expr x$(SHARED_LDFLAGS) : 'x\-[a-z]\([0-9]*\)'`; \
 678         OBJECT_MODE=$${OBJECT_MODE:-32}; export OBJECT_MODE; \
 679         SHLIB=lib$(LIBNAME).so; \
 680         SHLIB_SUFFIX=; \
 681         LIBDEPS="$(LIBDEPS)"; \
 682         ALLSYMSFLAGS='-bnogc'; \
 683         NOALLSYMSFLAGS=''; \
 684         SHAREDFLAGS='$(CFLAGS) -G -bE:lib$(LIBNAME).exp -bM:SRE -blibpath:$(LIBRPATH)'; \
 685         SHAREDCMD='$(CC)'; \
 686         $(LINK_SO_A_VIA_O)
 687 link_app.aix:
 688         LDCMD=$(CC);\
 689         LDFLAGS="$(CFLAGS) -blibpath:$(LIBRPATH)"; \
 690         LIBDEPS="$(LIBDEPS)"; \
 691         APPNAME="$(APPNAME)"
 692         $(LINK_APP)
 693
 694 link_o.reliantunix:
 695         @ $(CALC_VERSIONS); \
 696         SHLIB=lib$(LIBNAME).so; \
 697         SHLIB_SUFFIX=; \
 698         LIBDEPS="$(LIBDEPS)"; \
 699         ALLSYMSFLAGS=; \
 700         NOALLSYMSFLAGS=''; \
 701         SHAREDFLAGS='$(CFLAGS) -G'; \
 702         SHAREDCMD='$(CC)'; \
 703         $(LINK_SO_O)
 704 link_a.reliantunix:
 705         @ $(CALC_VERSIONS); \
 706         SHLIB=lib$(LIBNAME).so; \
 707         SHLIB_SUFFIX=; \
 708         LIBDEPS="$(LIBDEPS)"; \
 709         ALLSYMSFLAGS=; \
 710         NOALLSYMSFLAGS=''; \
 711         SHAREDFLAGS='$(CFLAGS) -G'; \
 712         SHAREDCMD='$(CC)'; \
 713         $(LINK_SO_A_UNPACKED)
 714 link_app.reliantunix:
 715         LDCMD=$(CC);\
 716         LDFLAGS="$(CFLAGS)"; \
 717         LIBDEPS="$(LIBDEPS)"; \
 718         APPNAME="$(APPNAME)"
 719         $(LINK_APP)
 720
 721 # Targets to build symbolic links when needed
 722 symlink.gnu symlink.solaris symlink.svr3 symlink.svr5 symlink.irix \
 723 symlink.aix symlink.reliantunix:
 724         @ $(CALC_VERSIONS); \
 725         SHLIB=lib$(LIBNAME).so; \
 726         $(SYMLINK_SO)
 727 symlink.darwin:
 728         @ $(CALC_VERSIONS); \
 729         SHLIB=lib$(LIBNAME); \
 730         SHLIB_SUFFIX=.dylib; \
 731         $(SYMLINK_SO)
 732 symlink.hpux:
 733         @ $(CALC_VERSIONS); \
 734         SHLIB=lib$(LIBNAME).sl; \
 735         expr $(PLATFORM) : '.*ia64' > /dev/null && SHLIB=lib$(LIBNAME).so; \
 736         $(SYMLINK_SO)
 737 # The following lines means those specific architectures do no symlinks
 738 symlink.cygwin symlib.alpha-osf1 symlink.tru64 symlink.tru64-rpath:
 739
 740 # Compatibility targets
 741 link_o.bsd-gcc-shared link_o.linux-shared link_o.gnu-shared: link_o.gnu
 742 link_a.bsd-gcc-shared link_a.linux-shared link_a.gnu-shared: link_a.gnu
 743 link_app.bsd-gcc-shared link_app.linux-shared link_app.gnu-shared: link_app.gnu
 744 symlink.bsd-gcc-shared symlink.bsd-shared symlink.linux-shared symlink.gnu-shared: symlink.gnu
 745 link_o.bsd-shared: link_o.bsd
 746 link_a.bsd-shared: link_a.bsd
 747 link_app.bsd-shared: link_app.bsd
 748 link_o.darwin-shared: link_o.darwin
 749 link_a.darwin-shared: link_a.darwin
 750 link_app.darwin-shared: link_app.darwin
 751 symlink.darwin-shared: symlink.darwin
 752 link_o.cygwin-shared: link_o.cygwin
 753 link_a.cygwin-shared: link_a.cygwin
 754 link_app.cygwin-shared: link_app.cygwin
 755 symlink.cygwin-shared: symlink.cygwin
 756 link_o.alpha-osf1-shared: link_o.alpha-osf1
 757 link_a.alpha-osf1-shared: link_a.alpha-osf1
 758 link_app.alpha-osf1-shared: link_app.alpha-osf1
 759 symlink.alpha-osf1-shared: symlink.alpha-osf1
 760 link_o.tru64-shared: link_o.tru64
 761 link_a.tru64-shared: link_a.tru64
 762 link_app.tru64-shared: link_app.tru64
 763 symlink.tru64-shared: symlink.tru64
 764 link_o.tru64-shared-rpath: link_o.tru64-rpath
 765 link_a.tru64-shared-rpath: link_a.tru64-rpath
 766 link_app.tru64-shared-rpath: link_app.tru64-rpath
 767 symlink.tru64-shared-rpath: symlink.tru64-rpath
 768 link_o.solaris-shared: link_o.solaris
 769 link_a.solaris-shared: link_a.solaris
 770 link_app.solaris-shared: link_app.solaris
 771 symlink.solaris-shared: symlink.solaris
 772 link_o.svr3-shared: link_o.svr3
 773 link_a.svr3-shared: link_a.svr3
 774 link_app.svr3-shared: link_app.svr3
 775 symlink.svr3-shared: symlink.svr3
 776 link_o.svr5-shared: link_o.svr5
 777 link_a.svr5-shared: link_a.svr5
 778 link_app.svr5-shared: link_app.svr5
 779 symlink.svr5-shared: symlink.svr5
 780 link_o.irix-shared: link_o.irix
 781 link_a.irix-shared: link_a.irix
 782 link_app.irix-shared: link_app.irix
 783 symlink.irix-shared: symlink.irix
 784 link_o.hpux-shared: link_o.hpux
 785 link_a.hpux-shared: link_a.hpux
 786 link_app.hpux-shared: link_app.hpux
 787 symlink.hpux-shared: symlink.hpux
 788 link_o.aix-shared: link_o.aix
 789 link_a.aix-shared: link_a.aix
 790 link_app.aix-shared: link_app.aix
 791 symlink.aix-shared: symlink.aix
 792 link_o.reliantunix-shared: link_o.reliantunix
 793 link_a.reliantunix-shared: link_a.reliantunix
 794 link_app.reliantunix-shared: link_app.reliantunix
 795 symlink.reliantunix-shared: symlink.reliantunix