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 $$UNPACKDIR
 135
 136 DETECT_GNU_LD=(${CC} -Wl,-V /dev/null 2>&1 | grep '^GNU ld' )>/dev/null
 137
 138 DO_GNU_SO=$(CALC_VERSIONS); \
 139         SHLIB=lib$(LIBNAME).so; \
 140         SHLIB_SUFFIX=; \
 141         LIBDEPS="$(LIBDEPS)"; \
 142         ALLSYMSFLAGS='-Wl,--whole-archive'; \
 143         NOALLSYMSFLAGS='-Wl,--no-whole-archive'; \
 144         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -Wl,-Bsymbolic -Wl,-soname=$$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         base=;  [ $(LIBNAME) = "crypto" ] && base=-Wl,--image-base,0x61200000; \
 264         SHAREDFLAGS="$(CFLAGS) $$base -Wl,-Bsymbolic -Wl,--out-implib,lib$(LIBNAME).dll.a"; \
 265         SHAREDCMD='${CC}'; \
 266         [ -f apps/$$SHLIB$$SHLIB_SUFFIX ] && rm apps/$$SHLIB$$SHLIB_SUFFIX; \
 267         [ -f test/$$SHLIB$$SHLIB_SUFFIX ] && rm test/$$SHLIB$$SHLIB_SUFFIX; \
 268         $(LINK_SO_A) || exit 1; \
 269         cp -p $$SHLIB$$SHLIB_SUFFIX apps/; \
 270         cp -p $$SHLIB$$SHLIB_SUFFIX test/
 271 link_app.cygwin:
 272         LDCMD=$(CC);\
 273         LDFLAGS="$(CFLAGS)"; \
 274         LIBDEPS="$(LIBDEPS)"; \
 275         APPNAME="$(APPNAME)"; \
 276         $(LINK_APP)
 277
 278 link_o.alpha-osf1:
 279         @ if ${DETECT_GNU_LD}; then \
 280                 $(DO_GNU_SO); \
 281         else \
 282                 SHLIB=lib$(LIBNAME).so; \
 283                 SHLIB_SUFFIX=; \
 284                 LIBDEPS="$(LIBDEPS)"; \
 285                 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
 286                 if [ -n "$$SHLIB_HIST" ]; then \
 287                         SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
 288                 else \
 289                         SHLIB_HIST="$(LIBVERSION)"; \
 290                 fi; \
 291                 SHLIB_SOVER=; \
 292                 ALLSYMSFLAGS='-all'; \
 293                 NOALLSYMSFLAGS='-none'; \
 294                 SHAREDFLAGS="$(CFLAGS) -shared"; \
 295                 SHAREDCMD='$(CC)'; \
 296                 if [ -n "$$SHLIB_HIST" ]; then \
 297                         SHAREDFLAGS="$$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
 298                 fi; \
 299         fi; \
 300         $(LINK_SO_O)
 301 link_a.alpha-osf1:
 302         @ if ${DETECT_GNU_LD}; then \
 303                 $(DO_GNU_SO); \
 304         else \
 305                 SHLIB=lib$(LIBNAME).so; \
 306                 SHLIB_SUFFIX=; \
 307                 LIBDEPS="$(LIBDEPS)"; \
 308                 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
 309                 if [ -n "$$SHLIB_HIST" ]; then \
 310                         SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
 311                 else \
 312                         SHLIB_HIST="$(LIBVERSION)"; \
 313                 fi; \
 314                 SHLIB_SOVER=; \
 315                 ALLSYMSFLAGS='-all'; \
 316                 NOALLSYMSFLAGS='-none'; \
 317                 SHAREDFLAGS="$(CFLAGS) -shared"; \
 318                 SHAREDCMD='$(CC)'; \
 319                 if [ -n "$$SHLIB_HIST" ]; then \
 320                         SHAREDFLAGS="$$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
 321                 fi; \
 322         fi; \
 323         $(LINK_SO_A)
 324 link_app.alpha-osf1:
 325         @ if ${DETECT_GNU_LD}; then \
 326                 $(DO_GNU_APP); \
 327         else \
 328                 LDCMD=$(CC);\
 329                 LDFLAGS="$(CFLAGS)"; \
 330                 LIBDEPS="$(LIBDEPS)"; \
 331                 APPNAME="$(APPNAME)"
 332         fi; \
 333         $(LINK_APP)
 334
 335 # The difference between alpha-osf1-shared and tru64-shared is the `-msym'
 336 # option passed to the linker.
 337 link_o.tru64:
 338         @ if ${DETECT_GNU_LD}; then \
 339                 $(DO_GNU_SO); \
 340         else \
 341                 SHLIB=lib$(LIBNAME).so; \
 342                 SHLIB_SUFFIX=; \
 343                 LIBDEPS="$(LIBDEPS)"; \
 344                 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
 345                 if [ -n "$$SHLIB_HIST" ]; then \
 346                         SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
 347                 else \
 348                         SHLIB_HIST="$(LIBVERSION)"; \
 349                 fi; \
 350                 SHLIB_SOVER=; \
 351                 ALLSYMSFLAGS='-all'; \
 352                 NOALLSYMSFLAGS='-none'; \
 353                 SHAREDFLAGS="$(CFLAGS) -shared -msym -rpath $(LIBRPATH)"; \
 354                 SHAREDCMD='$(CC)'; \
 355                 if [ -n "$$SHLIB_HIST" ]; then \
 356                         SHAREDFLAGS="$$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
 357                 fi; \
 358         fi; \
 359         $(LINK_SO_O)
 360 link_a.tru64:
 361         @ if ${DETECT_GNU_LD}; then \
 362                 $(DO_GNU_SO); \
 363         else \
 364                 SHLIB=lib$(LIBNAME).so; \
 365                 SHLIB_SUFFIX=; \
 366                 LIBDEPS="$(LIBDEPS)"; \
 367                 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
 368                 if [ -n "$$SHLIB_HIST" ]; then \
 369                         SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
 370                 else \
 371                         SHLIB_HIST="$(LIBVERSION)"; \
 372                 fi; \
 373                 SHLIB_SOVER=; \
 374                 ALLSYMSFLAGS='-all'; \
 375                 NOALLSYMSFLAGS='-none'; \
 376                 SHAREDFLAGS="$(CFLAGS) -shared -msym -rpath $(LIBRPATH)"; \
 377                 SHAREDCMD='$(CC)'; \
 378                 if [ -n "$$SHLIB_HIST" ]; then \
 379                         SHAREDFLAGS="$$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
 380                 fi; \
 381         fi; \
 382         $(LINK_SO_A)
 383 link_app.tru64:
 384         @ if ${DETECT_GNU_LD}; then \
 385                 $(DO_GNU_APP); \
 386         else \
 387                 LDCMD=$(CC);\
 388                 LDFLAGS="$(CFLAGS) -rpath $(LIBRPATH)"; \
 389                 LIBDEPS="$(LIBDEPS)"; \
 390                 APPNAME="$(APPNAME)"; \
 391         fi; \
 392         $(LINK_APP)
 393
 394 # The difference between tru64-shared and tru64-shared-rpath is the
 395 # -rpath ${LIBRPATH} passed to the linker.
 396 link_o.tru64-rpath:
 397         @ if ${DETECT_GNU_LD}; then \
 398                 $(DO_GNU_SO); \
 399         else \
 400                 SHLIB=lib$(LIBNAME).so; \
 401                 SHLIB_SUFFIX=; \
 402                 LIBDEPS="$(LIBDEPS)"; \
 403                 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
 404                 if [ -n "$$SHLIB_HIST" ]; then \
 405                         SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
 406                 else \
 407                         SHLIB_HIST="$(LIBVERSION)"; \
 408                 fi; \
 409                 SHLIB_SOVER=; \
 410                 ALLSYMSFLAGS='-all'; \
 411                 NOALLSYMSFLAGS='-none'; \
 412                 SHAREDFLAGS="$(CFLAGS) -shared -msym -rpath $(LIBRPATH)"; \
 413                 SHAREDCMD='$(CC)'; \
 414                 if [ -n "$$SHLIB_HIST" ]; then \
 415                         SHAREDFLAGS="$$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
 416                 fi; \
 417         fi; \
 418         $(LINK_SO_O)
 419 link_a.tru64-rpath:
 420         @ if ${DETECT_GNU_LD}; then \
 421                 $(DO_GNU_SO); \
 422         else \
 423                 SHLIB=lib$(LIBNAME).so; \
 424                 SHLIB_SUFFIX=; \
 425                 LIBDEPS="$(LIBDEPS)"; \
 426                 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
 427                 if [ -n "$$SHLIB_HIST" ]; then \
 428                         SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
 429                 else \
 430                         SHLIB_HIST="$(LIBVERSION)"; \
 431                 fi; \
 432                 SHLIB_SOVER=; \
 433                 ALLSYMSFLAGS='-all'; \
 434                 NOALLSYMSFLAGS='-none'; \
 435                 SHAREDFLAGS="$(CFLAGS) -shared -msym -rpath $(LIBRPATH)"; \
 436                 SHAREDCMD='$(CC)'; \
 437                 if [ -n "$$SHLIB_HIST" ]; then \
 438                         SHAREDFLAGS="$$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
 439                 fi; \
 440         fi; \
 441         $(LINK_SO_A)
 442 link_app.tru64-rpath:
 443         @ if ${DETECT_GNU_LD}; then \
 444                 $(DO_GNU_APP); \
 445         else \
 446                 LDCMD=$(CC);\
 447                 LDFLAGS="$(CFLAGS) -rpath $(LIBRPATH)"; \
 448                 LIBDEPS="$(LIBDEPS)"; \
 449                 APPNAME="$(APPNAME)"; \
 450         fi; \
 451         $(LINK_APP)
 452
 453 link_o.solaris:
 454         @ if ${DETECT_GNU_LD}; then \
 455                 $(DO_GNU_SO); \
 456         else \
 457                 $(CALC_VERSIONS); \
 458                 MINUSZ='-z '; \
 459                 (${CC} -v 2>&1 | grep gcc) > /dev/null && MINUSZ='-Wl,-z,'; \
 460                 SHLIB=lib$(LIBNAME).so; \
 461                 SHLIB_SUFFIX=; \
 462                 LIBDEPS="$(LIBDEPS)"; \
 463                 ALLSYMSFLAGS="$${MINUSZ}allextract"; \
 464                 NOALLSYMSFLAGS="$${MINUSZ}defaultextract"; \
 465                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX -R $(LIBRPATH) -Wl,-Bsymbolic"; \
 466                 SHAREDCMD='$(CC)'; \
 467         fi; \
 468         $(LINK_SO_O)
 469 link_a.solaris:
 470         @ if ${DETECT_GNU_LD}; then \
 471                 $(DO_GNU_SO); \
 472         else \
 473                 $(CALC_VERSIONS); \
 474                 MINUSZ='-z '; \
 475                 (${CC} -v 2>&1 | grep gcc) > /dev/null && MINUSZ='-Wl,-z,'; \
 476                 SHLIB=lib$(LIBNAME).so; \
 477                 SHLIB_SUFFIX=;\
 478                 LIBDEPS="$(LIBDEPS)"; \
 479                 ALLSYMSFLAGS="$${MINUSZ}allextract"; \
 480                 NOALLSYMSFLAGS="$${MINUSZ}defaultextract"; \
 481                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX -R $(LIBRPATH) -Wl,-Bsymbolic"; \
 482                 SHAREDCMD='$(CC)'; \
 483         fi; \
 484         $(LINK_SO_A)
 485 link_app.solaris:
 486         @ if ${DETECT_GNU_LD}; then \
 487                 $(DO_GNU_APP); \
 488         else \
 489                 LDCMD=$(CC);\
 490                 LDFLAGS="$(CFLAGS) -R $(LIBRPATH)"; \
 491                 LIBDEPS="$(LIBDEPS)"; \
 492                 APPNAME="$(APPNAME)"; \
 493         fi; \
 494         $(LINK_APP)
 495
 496 # OpenServer 5 native compilers used
 497 link_o.svr3:
 498         @ if ${DETECT_GNU_LD}; then \
 499                 $(DO_GNU_SO); \
 500         else \
 501                 $(CALC_VERSIONS); \
 502                 SHLIB=lib$(LIBNAME).so; \
 503                 SHLIB_SUFFIX=; \
 504                 LIBDEPS="$(LIBDEPS)"; \
 505                 ALLSYMSFLAGS=''; \
 506                 NOALLSYMSFLAGS=''; \
 507                 SHAREDFLAGS="$(CFLAGS) -G -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 508                 SHAREDCMD='$(CC)'; \
 509         fi; \
 510         $(LINK_SO_O)
 511 link_a.svr3:
 512         @ if ${DETECT_GNU_LD}; then \
 513                 $(DO_GNU_SO); \
 514         else \
 515                 $(CALC_VERSIONS); \
 516                 SHLIB=lib$(LIBNAME).so; \
 517                 SHLIB_SUFFIX=; \
 518                 LIBDEPS="$(LIBDEPS)"; \
 519                 ALLSYMSFLAGS=''; \
 520                 NOALLSYMSFLAGS=''; \
 521                 SHAREDFLAGS="$(CFLAGS) -G -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 522                 SHAREDCMD='$(CC)'; \
 523         fi; \
 524         $(LINK_SO_A_UNPACKED)
 525 link_app.svr3:
 526         @ if ${DETECT_GNU_LD}; then \
 527                 $(DO_GNU_APP); \
 528         else \
 529                 LDCMD=$(CC);\
 530                 LDFLAGS="$(CFLAGS)"; \
 531                 LIBDEPS="$(LIBDEPS)"; \
 532                 APPNAME="$(APPNAME)"; \
 533         fi; \
 534         $(LINK_APP)
 535
 536 # UnixWare 7 and OpenUNIX 8 native compilers used
 537 link_o.svr5:
 538         @ if ${DETECT_GNU_LD}; then \
 539                 $(DO_GNU_SO); \
 540         else \
 541                 $(CALC_VERSIONS); \
 542                 SHARE_FLAG='-G'; \
 543                 (${CC} -v 2>&1 | grep gcc) > /dev/null && SHARE_FLAG='-shared'; \
 544                 SHLIB=lib$(LIBNAME).so; \
 545                 SHLIB_SUFFIX=; \
 546                 LIBDEPS="$(LIBDEPS)"; \
 547                 ALLSYMSFLAGS=''; \
 548                 NOALLSYMSFLAGS=''; \
 549                 SHAREDFLAGS="$(CFLAGS) $${SHARE_FLAG} -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 550                 SHAREDCMD='$(CC)'; \
 551         fi; \
 552         $(LINK_SO_O)
 553 link_a.svr5:
 554         @ if ${DETECT_GNU_LD}; then \
 555                 $(DO_GNU_SO); \
 556         else \
 557                 $(CALC_VERSIONS); \
 558                 SHARE_FLAG='-G'; \
 559                 (${CC} -v 2>&1 | grep gcc) > /dev/null && SHARE_FLAG='-shared'; \
 560                 SHLIB=lib$(LIBNAME).so; \
 561                 SHLIB_SUFFIX=; \
 562                 LIBDEPS="$(LIBDEPS)"; \
 563                 ALLSYMSFLAGS=''; \
 564                 NOALLSYMSFLAGS=''; \
 565                 SHAREDFLAGS="$(CFLAGS) $${SHARE_FLAG} -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 566                 SHAREDCMD='$(CC)'; \
 567         fi; \
 568         $(LINK_SO_A_UNPACKED)
 569 link_app.svr5:
 570         @ if ${DETECT_GNU_LD}; then \
 571                 $(DO_GNU_APP); \
 572         else \
 573                 LDCMD=$(CC);\
 574                 LDFLAGS="$(CFLAGS)"; \
 575                 LIBDEPS="$(LIBDEPS)"; \
 576                 APPNAME="$(APPNAME)"; \
 577         fi; \
 578         $(LINK_APP)
 579
 580 link_o.irix:
 581         @ if ${DETECT_GNU_LD}; then \
 582                 $(DO_GNU_SO); \
 583         else \
 584                 $(CALC_VERSIONS); \
 585                 SHLIB=lib$(LIBNAME).so; \
 586                 SHLIB_SUFFIX=; \
 587                 LIBDEPS="$(LIBDEPS)"; \
 588                 MINUSWL=""; \
 589                 ($(CC) -v 2>&1 | grep gcc) > /dev/null && MINUSWL="-Wl,"; \
 590                 ALLSYMSFLAGS="$${MINUSWL}-all"; \
 591                 NOALLSYMSFLAGS="$${MINUSWL}-none"; \
 592                 SHAREDFLAGS="$(CFLAGS) -shared -Wl,-soname,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX -Wl,-rpath,$(LIBRPATH)"; \
 593                 SHAREDCMD='$(CC)'; \
 594         fi; \
 595         $(LINK_SO_O)
 596 link_a.irix:
 597         @ if ${DETECT_GNU_LD}; then \
 598                 $(DO_GNU_SO); \
 599         else \
 600                 $(CALC_VERSIONS); \
 601                 SHLIB=lib$(LIBNAME).so; \
 602                 SHLIB_SUFFIX=; \
 603                 LIBDEPS="$(LIBDEPS)"; \
 604                 MINUSWL=""; \
 605                 ($(CC) -v 2>&1 | grep gcc) > /dev/null && MINUSWL="-Wl,"; \
 606                 ALLSYMSFLAGS="$${MINUSWL}-all"; \
 607                 NOALLSYMSFLAGS="$${MINUSWL}-none"; \
 608                 SHAREDFLAGS="$(CFLAGS) -shared -Wl,-soname,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX -Wl,-rpath,$(LIBRPATH)"; \
 609                 SHAREDCMD='$(CC)'; \
 610         fi; \
 611         $(LINK_SO_A)
 612 link_app.irix:
 613         @ if ${DETECT_GNU_LD}; then \
 614                 $(DO_GNU_APP); \
 615         else \
 616                 LDCMD=$(CC);\
 617                 LDFLAGS="$(CFLAGS) -Wl,-rpath,$(LIBRPATH)"; \
 618                 LIBDEPS="$(LIBDEPS)"; \
 619                 APPNAME="$(APPNAME)"; \
 620         fi; \
 621         $(LINK_APP)
 622
 623 # 32-bit PA-RISC HP-UX embeds the -L pathname of libs we link with, so
 624 # we compensate for it with +cdp ../: and +cdp ./:. Yes, these rewrite
 625 # rules imply that we can only link one level down in catalog structure,
 626 # but that's what takes place for the moment of this writing. +cdp option
 627 # was introduced in HP-UX 11.x and applies in 32-bit PA-RISC link
 628 # editor context only [it's simply ignored in other cases, which are all
 629 # ELFs by the way].
 630 #
 631 link_o.hpux:
 632         @if ${DETECT_GNU_LD}; then $(DO_GNU_SO); else \
 633         $(CALC_VERSIONS); \
 634         SHLIB=lib$(LIBNAME).sl; \
 635         expr $(PLATFORM) : '.*ia64' > /dev/null && SHLIB=lib$(LIBNAME).so; \
 636         SHLIB_SUFFIX=; \
 637         LIBDEPS="$(LIBDEPS)"; \
 638         ALLSYMSFLAGS='-Wl,-Fl'; \
 639         NOALLSYMSFLAGS=''; \
 640         expr $(PLATFORM) : 'hpux64' > /dev/null && ALLSYMSFLAGS='-Wl,+forceload'; \
 641         SHAREDFLAGS="$(CFLAGS) -Wl,-B,symbolic,+vnocompatwarnings,-z,+s,+cdp,../:,+cdp,./:,+h,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX,+b,$(LIBRPATH)"; \
 642         SHAREDCMD=$(CC); \
 643         fi; \
 644         $(LINK_SO_O) && chmod a=rx $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX
 645 link_a.hpux:
 646         @if ${DETECT_GNU_LD}; then $(DO_GNU_SO); else \
 647         $(CALC_VERSIONS); \
 648         SHLIB=lib$(LIBNAME).sl; \
 649         expr $(PLATFORM) : '.*ia64' > /dev/null && SHLIB=lib$(LIBNAME).so; \
 650         SHLIB_SUFFIX=; \
 651         LIBDEPS="$(LIBDEPS)"; \
 652         ALLSYMSFLAGS='-Wl,-Fl'; \
 653         NOALLSYMSFLAGS=''; \
 654         expr $(PLATFORM) : 'hpux64' > /dev/null && ALLSYMSFLAGS='-Wl,+forceload'; \
 655         SHAREDFLAGS="$(CFLAGS) -Wl,-B,symbolic,+vnocompatwarnings,-z,+s,+cdp,../:,+cdp,./:,+h,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX,+b,$(LIBRPATH)"; \
 656         SHAREDCMD='$(CC)'; \
 657         fi; \
 658         $(LINK_SO_A) && chmod a=rx $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX
 659 link_app.hpux:
 660         @if ${DETECT_GNU_LD}; then $(DO_GNU_APP); else \
 661         LDCMD=$(CC);\
 662         LDFLAGS="$(CFLAGS) -Wl,+s,+cdp,../:,+cdp,./:,+b,$(LIBRPATH)"; \
 663         LIBDEPS="$(LIBDEPS)"; \
 664         APPNAME="$(APPNAME)"; \
 665         fi; \
 666         $(LINK_APP)
 667
 668 link_o.aix:
 669         @ $(CALC_VERSIONS); \
 670         OBJECT_MODE=`expr x$(SHARED_LDFLAGS) : 'x\-[a-z]\([0-9]*\)'`; \
 671         OBJECT_MODE=$${OBJECT_MODE:-32}; export OBJECT_MODE; \
 672         SHLIB=lib$(LIBNAME).so; \
 673         SHLIB_SUFFIX=; \
 674         LIBDEPS="$(LIBDEPS)"; \
 675         ALLSYMSFLAGS='-bnogc'; \
 676         NOALLSYMSFLAGS=''; \
 677         SHAREDFLAGS='$(CFLAGS) -G -bE:lib$(LIBNAME).exp -bM:SRE -blibpath:$(LIBRPATH)'; \
 678         SHAREDCMD='$(CC)'; \
 679         $(LINK_SO_O); rm -rf lib$(LIBNAME).exp
 680 link_a.aix:
 681         @ $(CALC_VERSIONS); \
 682         OBJECT_MODE=`expr x$(SHARED_LDFLAGS) : 'x\-[a-z]\([0-9]*\)'`; \
 683         OBJECT_MODE=$${OBJECT_MODE:-32}; export OBJECT_MODE; \
 684         SHLIB=lib$(LIBNAME).so; \
 685         SHLIB_SUFFIX=; \
 686         LIBDEPS="$(LIBDEPS)"; \
 687         ALLSYMSFLAGS='-bnogc'; \
 688         NOALLSYMSFLAGS=''; \
 689         SHAREDFLAGS='$(CFLAGS) -G -bE:lib$(LIBNAME).exp -bM:SRE -blibpath:$(LIBRPATH)'; \
 690         SHAREDCMD='$(CC)'; \
 691         $(LINK_SO_A_VIA_O)
 692 link_app.aix:
 693         LDCMD=$(CC);\
 694         LDFLAGS="$(CFLAGS) -blibpath:$(LIBRPATH)"; \
 695         LIBDEPS="$(LIBDEPS)"; \
 696         APPNAME="$(APPNAME)"
 697         $(LINK_APP)
 698
 699 link_o.reliantunix:
 700         @ $(CALC_VERSIONS); \
 701         SHLIB=lib$(LIBNAME).so; \
 702         SHLIB_SUFFIX=; \
 703         LIBDEPS="$(LIBDEPS)"; \
 704         ALLSYMSFLAGS=; \
 705         NOALLSYMSFLAGS=''; \
 706         SHAREDFLAGS='$(CFLAGS) -G'; \
 707         SHAREDCMD='$(CC)'; \
 708         $(LINK_SO_O)
 709 link_a.reliantunix:
 710         @ $(CALC_VERSIONS); \
 711         SHLIB=lib$(LIBNAME).so; \
 712         SHLIB_SUFFIX=; \
 713         LIBDEPS="$(LIBDEPS)"; \
 714         ALLSYMSFLAGS=; \
 715         NOALLSYMSFLAGS=''; \
 716         SHAREDFLAGS='$(CFLAGS) -G'; \
 717         SHAREDCMD='$(CC)'; \
 718         $(LINK_SO_A_UNPACKED)
 719 link_app.reliantunix:
 720         LDCMD=$(CC);\
 721         LDFLAGS="$(CFLAGS)"; \
 722         LIBDEPS="$(LIBDEPS)"; \
 723         APPNAME="$(APPNAME)"
 724         $(LINK_APP)
 725
 726 # Targets to build symbolic links when needed
 727 symlink.gnu symlink.solaris symlink.svr3 symlink.svr5 symlink.irix \
 728 symlink.aix symlink.reliantunix:
 729         @ $(CALC_VERSIONS); \
 730         SHLIB=lib$(LIBNAME).so; \
 731         $(SYMLINK_SO)
 732 symlink.darwin:
 733         @ $(CALC_VERSIONS); \
 734         SHLIB=lib$(LIBNAME); \
 735         SHLIB_SUFFIX=.dylib; \
 736         $(SYMLINK_SO)
 737 symlink.hpux:
 738         @ $(CALC_VERSIONS); \
 739         SHLIB=lib$(LIBNAME).sl; \
 740         expr $(PLATFORM) : '.*ia64' > /dev/null && SHLIB=lib$(LIBNAME).so; \
 741         $(SYMLINK_SO)
 742 # The following lines means those specific architectures do no symlinks
 743 symlink.cygwin symlib.alpha-osf1 symlink.tru64 symlink.tru64-rpath:
 744
 745 # Compatibility targets
 746 link_o.bsd-gcc-shared link_o.linux-shared link_o.gnu-shared: link_o.gnu
 747 link_a.bsd-gcc-shared link_a.linux-shared link_a.gnu-shared: link_a.gnu
 748 link_app.bsd-gcc-shared link_app.linux-shared link_app.gnu-shared: link_app.gnu
 749 symlink.bsd-gcc-shared symlink.bsd-shared symlink.linux-shared symlink.gnu-shared: symlink.gnu
 750 link_o.bsd-shared: link_o.bsd
 751 link_a.bsd-shared: link_a.bsd
 752 link_app.bsd-shared: link_app.bsd
 753 link_o.darwin-shared: link_o.darwin
 754 link_a.darwin-shared: link_a.darwin
 755 link_app.darwin-shared: link_app.darwin
 756 symlink.darwin-shared: symlink.darwin
 757 link_o.cygwin-shared: link_o.cygwin
 758 link_a.cygwin-shared: link_a.cygwin
 759 link_app.cygwin-shared: link_app.cygwin
 760 symlink.cygwin-shared: symlink.cygwin
 761 link_o.alpha-osf1-shared: link_o.alpha-osf1
 762 link_a.alpha-osf1-shared: link_a.alpha-osf1
 763 link_app.alpha-osf1-shared: link_app.alpha-osf1
 764 symlink.alpha-osf1-shared: symlink.alpha-osf1
 765 link_o.tru64-shared: link_o.tru64
 766 link_a.tru64-shared: link_a.tru64
 767 link_app.tru64-shared: link_app.tru64
 768 symlink.tru64-shared: symlink.tru64
 769 link_o.tru64-shared-rpath: link_o.tru64-rpath
 770 link_a.tru64-shared-rpath: link_a.tru64-rpath
 771 link_app.tru64-shared-rpath: link_app.tru64-rpath
 772 symlink.tru64-shared-rpath: symlink.tru64-rpath
 773 link_o.solaris-shared: link_o.solaris
 774 link_a.solaris-shared: link_a.solaris
 775 link_app.solaris-shared: link_app.solaris
 776 symlink.solaris-shared: symlink.solaris
 777 link_o.svr3-shared: link_o.svr3
 778 link_a.svr3-shared: link_a.svr3
 779 link_app.svr3-shared: link_app.svr3
 780 symlink.svr3-shared: symlink.svr3
 781 link_o.svr5-shared: link_o.svr5
 782 link_a.svr5-shared: link_a.svr5
 783 link_app.svr5-shared: link_app.svr5
 784 symlink.svr5-shared: symlink.svr5
 785 link_o.irix-shared: link_o.irix
 786 link_a.irix-shared: link_a.irix
 787 link_app.irix-shared: link_app.irix
 788 symlink.irix-shared: symlink.irix
 789 link_o.hpux-shared: link_o.hpux
 790 link_a.hpux-shared: link_a.hpux
 791 link_app.hpux-shared: link_app.hpux
 792 symlink.hpux-shared: symlink.hpux
 793 link_o.aix-shared: link_o.aix
 794 link_a.aix-shared: link_a.aix
 795 link_app.aix-shared: link_app.aix
 796 symlink.aix-shared: symlink.aix
 797 link_o.reliantunix-shared: link_o.reliantunix
 798 link_a.reliantunix-shared: link_a.reliantunix
 799 link_app.reliantunix-shared: link_app.reliantunix
 800 symlink.reliantunix-shared: symlink.reliantunix