Makefile.shared

   1 #
   2 # Helper makefile to link shared libraries in a portable way.
   3 # This is much simpler than libtool, and hopefully not too error-prone.
   4 #
   5 # The following variables need to be set on the command line to build
   6 # properly
   7
   8 # CC contains the current compiler.  This one MUST be defined
   9 CC=cc
  10 CFLAGS=$(CFLAG)
  11 # LDFLAGS contains flags to be used when temporary object files (when building
  12 # shared libraries) are created, or when an application is linked.
  13 # SHARED_LDFLAGS contains flags to be used when the shared library is created.
  14 LDFLAGS=$(LDFLAG)
  15 SHARED_LDFLAGS=$(SHARED_LDFLAG)
  16
  17 RC=windres
  18 # SHARED_RCFLAGS are flags used with windres, i.e. when build for Cygwin
  19 # or Mingw.
  20 SHARED_RCFLAGS=$(SHARED_RCFLAG)
  21
  22 NM=nm
  23 ECHO=echo
  24
  25 # LIBNAME contains just the name of the library, without prefix ("lib"
  26 # on Unix, "cyg" for certain forms under Cygwin...) or suffix (.a, .so,
  27 # .dll, ...).  This one MUST have a value when using this makefile to
  28 # build shared libraries.
  29 # For example, to build libfoo.so, you need to do the following:
  30 #LIBNAME=foo
  31 LIBNAME=
  32
  33 # APPNAME contains just the name of the application, without suffix (""
  34 # on Unix, ".exe" on Windows, ...).  This one MUST have a value when using
  35 # this makefile to build applications.
  36 # For example, to build foo, you need to do the following:
  37 #APPNAME=foo
  38 APPNAME=
  39
  40 # DSTDIR is the directory where the built file should end up in.
  41 DSTDIR=.
  42
  43 # SRCDIR is the top directory of the source tree.
  44 SRCDIR=.
  45
  46 # OBJECTS contains all the object files to link together into the application.
  47 # This must contain at least one object file.
  48 #OBJECTS=foo.o
  49 OBJECTS=
  50
  51 # LIBEXTRAS contains extra modules to link together with the library.
  52 # For example, if a second library, say libbar.a needs to be linked into
  53 # libfoo.so, you need to do the following:
  54 #LIBEXTRAS=libbar.a
  55 # Note that this MUST be used when using the link_dso targets, to hold the
  56 # names of all object files that go into the target shared object.
  57 LIBEXTRAS=
  58
  59 # LIBVERSION contains the current version of the library.
  60 # For example, to build libfoo.so.1.2, you need to do the following:
  61 #LIBVERSION=1.2
  62 LIBVERSION=
  63
  64 # LIBCOMPATVERSIONS contains the compatibility versions (a list) of
  65 # the library.  They MUST be in decreasing order.
  66 # For example, if libfoo.so.1.2.1 is backward compatible with libfoo.so.1.2
  67 # and libfoo.so.1, you need to do the following:
  68 #LIBCOMPATVERSIONS=1.2 1
  69 # Note that on systems that use sonames, the last number will appear as
  70 # part of it.
  71 # It's also possible, for systems that support it (Tru64, for example),
  72 # to add extra compatibility info with more precision, by adding a second
  73 # list of versions, separated from the first with a semicolon, like this:
  74 #LIBCOMPATVERSIONS=1.2 1;1.2.0 1.1.2 1.1.1 1.1.0 1.0.0
  75 LIBCOMPATVERSIONS=
  76
  77 # LIBDEPS contains all the flags necessary to cover all necessary
  78 # dependencies to other libraries.
  79 LIBDEPS=
  80
  81 #------------------------------------------------------------------------------
  82 # The rest is private to this makefile.
  83
  84 SET_X=:
  85 #SET_X=set -x
  86
  87 top:
  88         echo "Trying to use this makefile interactively?  Don't." ; exit 1
  89
  90 CALC_VERSIONS=  \
  91         SHLIB_COMPAT=; SHLIB_SOVER=; \
  92         if [ -n "$(LIBVERSION)$(LIBCOMPATVERSIONS)" ]; then \
  93                 prev=""; \
  94                 for v in `echo "$(LIBVERSION) $(LIBCOMPATVERSIONS)" | cut -d';' -f1`; do \
  95                         SHLIB_SOVER_NODOT=$$v; \
  96                         SHLIB_SOVER=.$$v; \
  97                         if [ -n "$$prev" ]; then \
  98                                 SHLIB_COMPAT="$$SHLIB_COMPAT .$$prev"; \
  99                         fi; \
 100                         prev=$$v; \
 101                 done; \
 102         fi
 103
 104 LINK_APP=       \
 105   ( $(SET_X);   \
 106     LIBDEPS="$${LIBDEPS:-$(LIBDEPS)}"; \
 107     LDCMD="$${LDCMD:-$(CC)}"; LDFLAGS="$${LDFLAGS:-$(CFLAGS) $(LDFLAGS)}"; \
 108     LIBPATH=`for x in $$LIBDEPS; do echo $$x; done | sed -e 's/^ *-L//;t' -e d | uniq`; \
 109     LIBPATH=`echo $$LIBPATH | sed -e 's/ /:/g'`; \
 110     $(ECHO) LD_LIBRARY_PATH=$$LIBPATH:$$LD_LIBRARY_PATH \
 111         $${LDCMD} $${LDFLAGS} -o $${APPNAME:=$(APPNAME)} $(OBJECTS) $${LIBDEPS}; \
 112     LD_LIBRARY_PATH=$$LIBPATH:$$LD_LIBRARY_PATH \
 113     $${LDCMD} $${LDFLAGS} -o $${APPNAME:=$(APPNAME)} $(OBJECTS) $${LIBDEPS} )
 114
 115 LINK_SO=        \
 116   ( $(SET_X);   \
 117     LIBDEPS="$${LIBDEPS:-$(LIBDEPS)}"; \
 118     SHAREDCMD="$${SHAREDCMD:-$(CC)}"; \
 119     SHAREDFLAGS="$${SHAREDFLAGS:-$(CFLAGS) $(SHARED_LDFLAGS)}"; \
 120     LIBPATH=`for x in $$LIBDEPS; do echo $$x; done | sed -e 's/^ *-L//;t' -e d | uniq`; \
 121     LIBPATH=`echo $$LIBPATH | sed -e 's/ /:/g'`; \
 122     $(ECHO) LD_LIBRARY_PATH=$$LIBPATH:$$LD_LIBRARY_PATH \
 123          $${SHAREDCMD} $${SHAREDFLAGS} \
 124              -o $(DSTDIR)/$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX \
 125              $$ALLSYMSFLAGS $$SHOBJECTS $$NOALLSYMSFLAGS $$LIBDEPS; \
 126     LD_LIBRARY_PATH=$$LIBPATH:$$LD_LIBRARY_PATH \
 127     $${SHAREDCMD} $${SHAREDFLAGS} \
 128         -o $(DSTDIR)/$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX \
 129         $$ALLSYMSFLAGS $$SHOBJECTS $$NOALLSYMSFLAGS $$LIBDEPS \
 130   ) && $(SYMLINK_SO)
 131
 132 SYMLINK_SO=     \
 133         if [ -n "$$INHIBIT_SYMLINKS" ]; then :; else \
 134                 prev=$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX; \
 135                 if [ -n "$$SHLIB_COMPAT" ]; then \
 136                         for x in $$SHLIB_COMPAT; do \
 137                                 ( $(SET_X); rm -f $(DSTDIR)/$$SHLIB$$x$$SHLIB_SUFFIX; \
 138                                   ln -s $$prev $(DSTDIR)/$$SHLIB$$x$$SHLIB_SUFFIX ); \
 139                                 prev=$$SHLIB$$x$$SHLIB_SUFFIX; \
 140                         done; \
 141                 fi; \
 142                 if [ -n "$$SHLIB_SOVER" ]; then \
 143                         ( $(SET_X); rm -f $(DSTDIR)/$$SHLIB$$SHLIB_SUFFIX; \
 144                           ln -s $$prev $(DSTDIR)/$$SHLIB$$SHLIB_SUFFIX ); \
 145                 fi; \
 146         fi
 147
 148 LINK_SO_SHLIB=  SHOBJECTS="$(DSTDIR)/lib$(LIBNAME).a $(LIBEXTRAS)"; $(LINK_SO)
 149 LINK_SO_DSO=    INHIBIT_SYMLINKS=yes; SHOBJECTS="$(LIBEXTRAS)"; $(LINK_SO)
 150
 151 LINK_SO_SHLIB_VIA_O=    \
 152   SHOBJECTS=$(DSTDIR)/lib$(LIBNAME).o; \
 153   ALL=$$ALLSYMSFLAGS; ALLSYMSFLAGS=; NOALLSYMSFLAGS=; \
 154   ( $(ECHO) ld $(LDFLAGS) -r -o $$SHOBJECTS $$ALL lib$(LIBNAME).a $(LIBEXTRAS); \
 155     ld $(LDFLAGS) -r -o $$SHOBJECTS $$ALL $(DSTDIR)/lib$(LIBNAME).a $(LIBEXTRAS) ); \
 156   $(LINK_SO) && ( $(ECHO) rm -f $$SHOBJECTS; rm -f $$SHOBJECTS )
 157
 158 LINK_SO_SHLIB_UNPACKED= \
 159   UNPACKDIR=link_tmp.$$$$; rm -rf $$UNPACKDIR; mkdir $$UNPACKDIR; \
 160   (cd $$UNPACKDIR; ar x ../$(DSTDIR)/lib$(LIBNAME).a) && \
 161   ([ -z "$(LIBEXTRAS)" ] || cp $(LIBEXTRAS) $$UNPACKDIR) && \
 162   SHOBJECTS=$$UNPACKDIR/*.o; \
 163   $(LINK_SO) && rm -rf $$UNPACKDIR
 164
 165 DETECT_GNU_LD=($(CC) -Wl,-V /dev/null 2>&1 | grep '^GNU ld' )>/dev/null
 166
 167 DO_GNU_SO_COMMON=\
 168         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -Wl,-Bsymbolic -Wl,-soname=$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"
 169 DO_GNU_DSO=\
 170         SHLIB=$(LIBNAME).so; \
 171         SHLIB_SOVER=; \
 172         SHLIB_SUFFIX=; \
 173         $(DO_GNU_SO_COMMON)
 174 DO_GNU_SO=\
 175         $(CALC_VERSIONS); \
 176         SHLIB=lib$(LIBNAME).so; \
 177         ALLSYMSFLAGS='-Wl,--whole-archive'; \
 178         NOALLSYMSFLAGS='-Wl,--no-whole-archive'; \
 179         $(DO_GNU_SO_COMMON)
 180 DO_GNU_APP=LDFLAGS="$(CFLAGS) $(LDFLAGS)"
 181
 182 #This is rather special.  It's a special target with which one can link
 183 #applications without bothering with any features that have anything to
 184 #do with shared libraries, for example when linking against static
 185 #libraries.  It's mostly here to avoid a lot of conditionals everywhere
 186 #else...
 187 link_app.:
 188         $(LINK_APP)
 189
 190 link_dso.gnu:
 191         @ $(DO_GNU_DSO); $(LINK_SO_DSO)
 192 link_shlib.gnu:
 193         @ $(DO_GNU_SO); $(LINK_SO_SHLIB)
 194 link_app.gnu:
 195         @ $(DO_GNU_APP); $(LINK_APP)
 196
 197 link_shlib.linux-shared:
 198         @$(PERL) $(SRCDIR)/util/mkdef.pl $(LIBNAME) linux >$(LIBNAME).map; \
 199         $(DO_GNU_SO); \
 200         ALLSYMSFLAGS='-Wl,--whole-archive,--version-script=$(LIBNAME).map'; \
 201         $(LINK_SO_SHLIB)
 202
 203 link_dso.bsd:
 204         @if $(DETECT_GNU_LD); then $(DO_GNU_DSO); else \
 205         SHLIB=$(LIBNAME).so; \
 206         SHLIB_SUFFIX=; \
 207         LIBDEPS=" "; \
 208         ALLSYMSFLAGS=; \
 209         NOALLSYMSFLAGS=; \
 210         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -nostdlib"; \
 211         fi; $(LINK_SO_DSO)
 212 link_shlib.bsd:
 213         @if $(DETECT_GNU_LD); then $(DO_GNU_SO); else \
 214         $(CALC_VERSIONS); \
 215         SHLIB=lib$(LIBNAME).so; \
 216         SHLIB_SUFFIX=; \
 217         LIBDEPS=" "; \
 218         ALLSYMSFLAGS="-Wl,-Bforcearchive"; \
 219         NOALLSYMSFLAGS=; \
 220         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -nostdlib"; \
 221         fi; $(LINK_SO_SHLIB)
 222 link_app.bsd:
 223         @if $(DETECT_GNU_LD); then $(DO_GNU_APP); else \
 224         LDFLAGS="$(CFLAGS) $(LDFLAGS)"; \
 225         fi; $(LINK_APP)
 226
 227 # For Darwin AKA Mac OS/X (dyld)
 228 # Originally link_dso.darwin produced .so, because it was hard-coded
 229 # in dso_dlfcn module. At later point dso_dlfcn switched to .dylib
 230 # extension in order to allow for run-time linking with vendor-
 231 # supplied shared libraries such as libz, so that link_dso.darwin had
 232 # to be harmonized with it. This caused minor controversy, because
 233 # it was believed that dlopen can't be used to dynamically load
 234 # .dylib-s, only so called bundle modules (ones linked with -bundle
 235 # flag). The belief seems to be originating from pre-10.4 release,
 236 # where dlfcn functionality was emulated by dlcompat add-on. In
 237 # 10.4 dlopen was rewritten as native part of dyld and is documented
 238 # to be capable of loading both dynamic libraries and bundles. In
 239 # order to provide compatibility with pre-10.4 dlopen, modules are
 240 # linked with -bundle flag, which makes .dylib extension misleading.
 241 # It works, because dlopen is [and always was] extension-agnostic.
 242 # Alternative to this heuristic approach is to develop specific
 243 # MacOS X dso module relying on whichever "native" dyld interface.
 244 link_dso.darwin:
 245         @ SHLIB=$(LIBNAME); \
 246         SHLIB_SUFFIX=.dylib; \
 247         ALLSYMSFLAGS=''; \
 248         NOALLSYMSFLAGS=''; \
 249         SHAREDFLAGS="$(CFLAGS) `echo $(SHARED_LDFLAGS) | sed s/dynamiclib/bundle/`"; \
 250         $(LINK_SO_DSO)
 251 link_shlib.darwin:
 252         @ $(CALC_VERSIONS); \
 253         SHLIB=lib$(LIBNAME); \
 254         SHLIB_SUFFIX=.dylib; \
 255         ALLSYMSFLAGS='-all_load'; \
 256         NOALLSYMSFLAGS=''; \
 257         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS)"; \
 258         if [ -n "$(LIBVERSION)" ]; then \
 259                 SHAREDFLAGS="$$SHAREDFLAGS -current_version $(LIBVERSION)"; \
 260         fi; \
 261         if [ -n "$$SHLIB_SOVER_NODOT" ]; then \
 262                 SHAREDFLAGS="$$SHAREDFLAGS -compatibility_version $$SHLIB_SOVER_NODOT"; \
 263         fi; \
 264         SHAREDFLAGS="$$SHAREDFLAGS -install_name $(INSTALLTOP)/$(LIBDIR)/$$SHLIB$(SHLIB_EXT)"; \
 265         $(LINK_SO_SHLIB)
 266 link_app.darwin:        # is there run-path on darwin?
 267         $(LINK_APP)
 268
 269 link_dso.cygwin:
 270         @SHLIB=$(LIBNAME); \
 271         SHLIB_SUFFIX=.dll; \
 272         ALLSYMSFLAGS=''; \
 273         NOALLSYMSFLAGS=''; \
 274         base=-Wl,--enable-auto-image-base; \
 275         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared $$base -Wl,-Bsymbolic"; \
 276         $(LINK_SO_DSO)
 277 link_shlib.cygwin:
 278         @ $(CALC_VERSIONS); \
 279         INHIBIT_SYMLINKS=yes; \
 280         SHLIB=cyg$(LIBNAME); SHLIB_SOVER=-$(LIBVERSION); SHLIB_SUFFIX=.dll; \
 281         dll_name=$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX; \
 282         $(ECHO) "$(PERL) $(SRCDIR)/util/mkrc.pl $$dll_name |" \
 283                      "$(RC) $(SHARED_RCFLAGS) -o rc.o"; \
 284         $(PERL) $(SRCDIR)/util/mkrc.pl $$dll_name | \
 285                 $(RC) $(SHARED_RCFLAGS) -o rc.o; \
 286         ALLSYMSFLAGS='-Wl,--whole-archive'; \
 287         NOALLSYMSFLAGS='-Wl,--no-whole-archive'; \
 288         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -Wl,--enable-auto-image-base -Wl,-Bsymbolic -Wl,--out-implib,lib$(LIBNAME).dll.a rc.o"; \
 289         $(LINK_SO_SHLIB) || exit 1; \
 290         rm rc.o
 291 link_app.cygwin:
 292         $(LINK_APP)
 293
 294 # link_dso.mingw-shared and link_app.mingw-shared are mapped to the
 295 # corresponding cygwin targets, as they do the exact same thing.
 296 link_shlib.mingw:
 297         @ $(CALC_VERSIONS); \
 298         INHIBIT_SYMLINKS=yes; \
 299         arch=; \
 300         if expr $(PLATFORM) : mingw64 > /dev/null; then arch=-x64; fi; \
 301         sover=`echo $(LIBVERSION) | sed -e 's/\./_/g'` ; \
 302         SHLIB=lib$(LIBNAME); \
 303         SHLIB_SOVER=-$$sover$$arch; \
 304         SHLIB_SUFFIX=.dll; \
 305         dll_name=$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX; \
 306         $(PERL) $(SRCDIR)/util/mkdef.pl 32 $(LIBNAME) \
 307                 | sed -e 's|^\(LIBRARY  *\)$(LIBNAME)32|\1'"$$dll_name"'|' \
 308                 > $(LIBNAME).def; \
 309         echo "$(PERL) $(SRCDIR)/util/mkrc.pl $$dll_name |" \
 310                 "$(RC) $(SHARED_RCFLAGS) -o rc.o"; \
 311         $(PERL) $(SRCDIR)/util/mkrc.pl $$dll_name | \
 312                 $(RC) $(SHARED_RCFLAGS) -o rc.o; \
 313         ALLSYMSFLAGS='-Wl,--whole-archive'; \
 314         NOALLSYMSFLAGS='-Wl,--no-whole-archive'; \
 315         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -Wl,-Bsymbolic -Wl,--out-implib,lib$(LIBNAME).dll.a $(LIBNAME).def rc.o"; \
 316         $(LINK_SO_SHLIB) || exit 1; \
 317         rm $(LIBNAME).def rc.o
 318
 319 link_dso.alpha-osf1:
 320         @ if $(DETECT_GNU_LD); then \
 321                 $(DO_GNU_DSO); \
 322         else \
 323                 SHLIB=$(LIBNAME).so; \
 324                 SHLIB_SUFFIX=; \
 325                 ALLSYMSFLAGS=''; \
 326                 NOALLSYMSFLAGS=''; \
 327                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -Wl,-B,symbolic"; \
 328         fi; \
 329         $(LINK_SO_DSO)
 330 link_shlib.alpha-osf1:
 331         @ if $(DETECT_GNU_LD); then \
 332                 $(DO_GNU_SO); \
 333         else \
 334                 SHLIB=lib$(LIBNAME).so; \
 335                 SHLIB_SUFFIX=; \
 336                 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
 337                 if [ -n "$$SHLIB_HIST" ]; then \
 338                         SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
 339                 else \
 340                         SHLIB_HIST="$(LIBVERSION)"; \
 341                 fi; \
 342                 SHLIB_SOVER=; \
 343                 ALLSYMSFLAGS='-all'; \
 344                 NOALLSYMSFLAGS='-none'; \
 345                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -Wl,-B,symbolic"; \
 346                 if [ -n "$$SHLIB_HIST" ]; then \
 347                         SHAREDFLAGS="$$SHAREDFLAGS -set_version $$SHLIB_HIST"; \
 348                 fi; \
 349         fi; \
 350         $(LINK_SO_SHLIB)
 351 link_app.alpha-osf1:
 352         @if $(DETECT_GNU_LD); then \
 353                 $(DO_GNU_APP); \
 354         else \
 355                 LDFLAGS="$(CFLAGS) $(LDFLAGS)"; \
 356         fi; \
 357         $(LINK_APP)
 358
 359 link_dso.solaris:
 360         @ if $(DETECT_GNU_LD); then \
 361                 $(DO_GNU_DSO); \
 362         else \
 363                 $(CALC_VERSIONS); \
 364                 SHLIB=$(LIBNAME).so; \
 365                 SHLIB_SUFFIX=; \
 366                 ALLSYMSFLAGS=""; \
 367                 NOALLSYMSFLAGS=""; \
 368                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX -Wl,-Bsymbolic"; \
 369         fi; \
 370         $(LINK_SO_DSO)
 371 link_shlib.solaris:
 372         @ if $(DETECT_GNU_LD); then \
 373                 $(DO_GNU_SO); \
 374         else \
 375                 $(CALC_VERSIONS); \
 376                 SHLIB=lib$(LIBNAME).so; \
 377                 SHLIB_SUFFIX=;\
 378                 $(PERL) $(SRCDIR)/util/mkdef.pl $(LIBNAME) linux >$(LIBNAME).map; \
 379                 ALLSYMSFLAGS="-Wl,-z,allextract,-M,$(LIBNAME).map"; \
 380                 NOALLSYMSFLAGS="-Wl,-z,defaultextract"; \
 381                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX -Wl,-Bsymbolic"; \
 382         fi; \
 383         $(LINK_SO_SHLIB)
 384 link_app.solaris:
 385         @ if $(DETECT_GNU_LD); then \
 386                 $(DO_GNU_APP); \
 387         else \
 388                 LDFLAGS="$(CFLAGS) $(LDFLAGS)"; \
 389         fi; \
 390         $(LINK_APP)
 391
 392 # OpenServer 5 native compilers used
 393 link_dso.svr3:
 394         @ if $(DETECT_GNU_LD); then \
 395                 $(DO_GNU_DSO); \
 396         else \
 397                 $(CALC_VERSIONS); \
 398                 SHLIB=$(LIBNAME).so; \
 399                 SHLIB_SUFFIX=; \
 400                 ALLSYMSFLAGS=''; \
 401                 NOALLSYMSFLAGS=''; \
 402                 SHAREDFLAGS="$(CFLAGS) -G -h $$SHLIB$$SHLIB_SUFFIX"; \
 403         fi; \
 404         $(LINK_SO_DSO)
 405 link_shlib.svr3:
 406         @ if $(DETECT_GNU_LD); then \
 407                 $(DO_GNU_SO); \
 408         else \
 409                 $(CALC_VERSIONS); \
 410                 SHLIB=lib$(LIBNAME).so; \
 411                 SHLIB_SUFFIX=; \
 412                 ALLSYMSFLAGS=''; \
 413                 NOALLSYMSFLAGS=''; \
 414                 SHAREDFLAGS="$(CFLAGS) -G -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 415         fi; \
 416         $(LINK_SO_SHLIB_UNPACKED)
 417 link_app.svr3:
 418         @$(DETECT_GNU_LD) && $(DO_GNU_APP); \
 419         $(LINK_APP)
 420
 421 # UnixWare 7 and OpenUNIX 8 native compilers used
 422 link_dso.svr5:
 423         @ if $(DETECT_GNU_LD); then \
 424                 $(DO_GNU_DSO); \
 425         else \
 426                 SHARE_FLAG='-G'; \
 427                 ($(CC) -v 2>&1 | grep gcc) > /dev/null && SHARE_FLAG='-shared'; \
 428                 SHLIB=$(LIBNAME).so; \
 429                 SHLIB_SUFFIX=; \
 430                 ALLSYMSFLAGS=''; \
 431                 NOALLSYMSFLAGS=''; \
 432                 SHAREDFLAGS="$(CFLAGS) $${SHARE_FLAG} -h $$SHLIB$$SHLIB_SUFFIX"; \
 433         fi; \
 434         $(LINK_SO_DSO)
 435 link_shlib.svr5:
 436         @ if $(DETECT_GNU_LD); then \
 437                 $(DO_GNU_SO); \
 438         else \
 439                 $(CALC_VERSIONS); \
 440                 SHARE_FLAG='-G'; \
 441                 ($(CC) -v 2>&1 | grep gcc) > /dev/null && SHARE_FLAG='-shared'; \
 442                 SHLIB=lib$(LIBNAME).so; \
 443                 SHLIB_SUFFIX=; \
 444                 ALLSYMSFLAGS=''; \
 445                 NOALLSYMSFLAGS=''; \
 446                 SHAREDFLAGS="$(CFLAGS) $${SHARE_FLAG} -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 447         fi; \
 448         $(LINK_SO_SHLIB_UNPACKED)
 449 link_app.svr5:
 450         @$(DETECT_GNU_LD) && $(DO_GNU_APP); \
 451         $(LINK_APP)
 452
 453 link_dso.irix:
 454         @ if $(DETECT_GNU_LD); then \
 455                 $(DO_GNU_DSO); \
 456         else \
 457                 SHLIB=$(LIBNAME).so; \
 458                 SHLIB_SUFFIX=; \
 459                 ALLSYMSFLAGS=""; \
 460                 NOALLSYMSFLAGS=""; \
 461                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -Wl,-soname,$$SHLIB$$SHLIB_SUFFIX,-B,symbolic"; \
 462         fi; \
 463         $(LINK_SO_DSO)
 464 link_shlib.irix:
 465         @ if $(DETECT_GNU_LD); then \
 466                 $(DO_GNU_SO); \
 467         else \
 468                 $(CALC_VERSIONS); \
 469                 SHLIB=lib$(LIBNAME).so; \
 470                 SHLIB_SUFFIX=; \
 471                 MINUSWL=""; \
 472                 ($(CC) -v 2>&1 | grep gcc) > /dev/null && MINUSWL="-Wl,"; \
 473                 ALLSYMSFLAGS="$${MINUSWL}-all"; \
 474                 NOALLSYMSFLAGS="$${MINUSWL}-none"; \
 475                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -Wl,-soname,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX,-B,symbolic"; \
 476         fi; \
 477         $(LINK_SO_SHLIB)
 478 link_app.irix:
 479         @LDFLAGS="$(CFLAGS) $(LDFLAGS)"; \
 480         $(LINK_APP)
 481
 482 # 32-bit PA-RISC HP-UX embeds the -L pathname of libs we link with, so
 483 # we compensate for it with +cdp ../: and +cdp ./:. Yes, these rewrite
 484 # rules imply that we can only link one level down in catalog structure,
 485 # but that's what takes place for the moment of this writing. +cdp option
 486 # was introduced in HP-UX 11.x and applies in 32-bit PA-RISC link
 487 # editor context only [it's simply ignored in other cases, which are all
 488 # ELFs by the way].
 489 #
 490 link_dso.hpux:
 491         @if $(DETECT_GNU_LD); then $(DO_GNU_DSO); else \
 492         SHLIB=$(LIBNAME).sl; \
 493         expr "$(CFLAGS)" : '.*DSO_DLFCN' > /dev/null && SHLIB=$(LIBNAME).so; \
 494         SHLIB_SUFFIX=; \
 495         ALLSYMSFLAGS=''; \
 496         NOALLSYMSFLAGS=''; \
 497         expr $(PLATFORM) : 'hpux64' > /dev/null && ALLSYMSFLAGS='-Wl,+forceload'; \
 498         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -Wl,-B,symbolic,+vnocompatwarnings,-z,+s,+h,$$SHLIB$$SHLIB_SUFFIX,+cdp,../:,+cdp,./:"; \
 499         fi; \
 500         rm -f $(DSTDIR)/$$SHLIB$$SHLIB_SUFFIX || :; \
 501         $(LINK_SO_DSO) && chmod a=rx $(DSTDIR)/$$SHLIB$$SHLIB_SUFFIX
 502 link_shlib.hpux:
 503         @if $(DETECT_GNU_LD); then $(DO_GNU_SO); else \
 504         $(CALC_VERSIONS); \
 505         SHLIB=lib$(LIBNAME).sl; \
 506         expr $(PLATFORM) : '.*ia64' > /dev/null && SHLIB=lib$(LIBNAME).so; \
 507         SHLIB_SUFFIX=; \
 508         ALLSYMSFLAGS='-Wl,-Fl'; \
 509         NOALLSYMSFLAGS=''; \
 510         expr $(PLATFORM) : 'hpux64' > /dev/null && ALLSYMSFLAGS='-Wl,+forceload'; \
 511         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -Wl,-B,symbolic,+vnocompatwarnings,-z,+s,+h,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX,+cdp,../:,+cdp,./:"; \
 512         fi; \
 513         rm -f $(DSTDIR)/$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX || :; \
 514         $(LINK_SO_SHLIB) && chmod a=rx $(DSTDIR)/$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX
 515 link_app.hpux:
 516         @if $(DETECT_GNU_LD); then $(DO_GNU_APP); else \
 517         LDFLAGS="$(CFLAGS) $(LDFLAGS) -Wl,+s,+cdp,../:,+cdp,./:"; \
 518         fi; \
 519         $(LINK_APP)
 520
 521 link_dso.aix:
 522         @OBJECT_MODE=`expr "x$(SHARED_LDFLAGS)" : 'x\-[a-z]*\(64\)'` || :; \
 523         OBJECT_MODE=$${OBJECT_MODE:-32}; export OBJECT_MODE; \
 524         SHLIB=$(LIBNAME).so; \
 525         SHLIB_SUFFIX=; \
 526         ALLSYMSFLAGS=''; \
 527         NOALLSYMSFLAGS=''; \
 528         SHAREDFLAGS='$(CFLAGS) $(SHARED_LDFLAGS) -Wl,-bexpall,-bnolibpath,-bM:SRE'; \
 529         rm -f $(DSTDIR)/$$SHLIB$$SHLIB_SOVER 2>&1 > /dev/null ; \
 530         $(LINK_SO_DSO);
 531 link_shlib.aix:
 532         @ $(CALC_VERSIONS); \
 533         OBJECT_MODE=`expr "x$(SHARED_LDFLAGS)" : 'x\-[a-z]*\(64\)'` || : ; \
 534         OBJECT_MODE=$${OBJECT_MODE:-32}; export OBJECT_MODE; \
 535         SHLIB=lib$(LIBNAME).so; \
 536         SHLIB_SUFFIX=; \
 537         ALLSYMSFLAGS='-bnogc'; \
 538         NOALLSYMSFLAGS=''; \
 539         SHAREDFLAGS='$(CFLAGS) $(SHARED_LDFLAGS) -Wl,-bexpall,-bnolibpath,-bM:SRE'; \
 540         rm -f $(DSTDIR)/$$SHLIB$$SHLIB_SOVER 2>&1 > /dev/null ; \
 541         $(LINK_SO_SHLIB_VIA_O)
 542 link_app.aix:
 543         LDFLAGS="$(CFLAGS) -Wl,-bsvr4 $(LDFLAGS)"; \
 544         $(LINK_APP)
 545
 546
 547 # Targets to build symbolic links when needed
 548 symlink.gnu symlink.solaris symlink.svr3 symlink.svr5 symlink.irix \
 549 symlink.aix:
 550         @ $(CALC_VERSIONS); \
 551         SHLIB=lib$(LIBNAME).so; \
 552         $(SYMLINK_SO)
 553 symlink.darwin:
 554         @ $(CALC_VERSIONS); \
 555         SHLIB=lib$(LIBNAME); \
 556         SHLIB_SUFFIX=.dylib; \
 557         $(SYMLINK_SO)
 558 symlink.hpux:
 559         @ $(CALC_VERSIONS); \
 560         SHLIB=lib$(LIBNAME).sl; \
 561         expr $(PLATFORM) : '.*ia64' > /dev/null && SHLIB=lib$(LIBNAME).so; \
 562         $(SYMLINK_SO)
 563 # The following lines means those specific architectures do no symlinks
 564 symlink.cygwin symlink.alpha-osf1 symlink.tru64 symlink.tru64-rpath:
 565
 566 # Compatibility targets
 567 link_dso.bsd-gcc-shared link_dso.linux-shared link_dso.gnu-shared: link_dso.gnu
 568 link_shlib.bsd-gcc-shared: link_shlib.linux-shared
 569 link_shlib.gnu-shared: link_shlib.gnu
 570 link_app.bsd-gcc-shared link_app.linux-shared link_app.gnu-shared: link_app.gnu
 571 symlink.bsd-gcc-shared symlink.bsd-shared symlink.linux-shared symlink.gnu-shared: symlink.gnu
 572 link_dso.bsd-shared: link_dso.bsd
 573 link_shlib.bsd-shared: link_shlib.bsd
 574 link_app.bsd-shared: link_app.bsd
 575 link_dso.darwin-shared: link_dso.darwin
 576 link_shlib.darwin-shared: link_shlib.darwin
 577 link_app.darwin-shared: link_app.darwin
 578 symlink.darwin-shared: symlink.darwin
 579 link_dso.cygwin-shared: link_dso.cygwin
 580 link_shlib.cygwin-shared: link_shlib.cygwin
 581 link_app.cygwin-shared: link_app.cygwin
 582 symlink.cygwin-shared: symlink.cygwin
 583 link_dso.mingw-shared: link_dso.cygwin
 584 link_shlib.mingw-shared: link_shlib.mingw
 585 link_app.mingw-shared: link_app.cygwin
 586 symlink.mingw-shared: symlink.cygwin
 587 link_dso.alpha-osf1-shared: link_dso.alpha-osf1
 588 link_shlib.alpha-osf1-shared: link_shlib.alpha-osf1
 589 link_app.alpha-osf1-shared: link_app.alpha-osf1
 590 symlink.alpha-osf1-shared: symlink.alpha-osf1
 591 link_dso.tru64-shared: link_dso.tru64
 592 link_shlib.tru64-shared: link_shlib.tru64
 593 link_app.tru64-shared: link_app.tru64
 594 symlink.tru64-shared: symlink.tru64
 595 link_dso.tru64-shared-rpath: link_dso.tru64-rpath
 596 link_shlib.tru64-shared-rpath: link_shlib.tru64-rpath
 597 link_app.tru64-shared-rpath: link_app.tru64-rpath
 598 symlink.tru64-shared-rpath: symlink.tru64-rpath
 599 link_dso.solaris-shared: link_dso.solaris
 600 link_shlib.solaris-shared: link_shlib.solaris
 601 link_app.solaris-shared: link_app.solaris
 602 symlink.solaris-shared: symlink.solaris
 603 link_dso.svr3-shared: link_dso.svr3
 604 link_shlib.svr3-shared: link_shlib.svr3
 605 link_app.svr3-shared: link_app.svr3
 606 symlink.svr3-shared: symlink.svr3
 607 link_dso.svr5-shared: link_dso.svr5
 608 link_shlib.svr5-shared: link_shlib.svr5
 609 link_app.svr5-shared: link_app.svr5
 610 symlink.svr5-shared: symlink.svr5
 611 link_dso.irix-shared: link_dso.irix
 612 link_shlib.irix-shared: link_shlib.irix
 613 link_app.irix-shared: link_app.irix
 614 symlink.irix-shared: symlink.irix
 615 link_dso.hpux-shared: link_dso.hpux
 616 link_shlib.hpux-shared: link_shlib.hpux
 617 link_app.hpux-shared: link_app.hpux
 618 symlink.hpux-shared: symlink.hpux
 619 link_dso.aix-shared: link_dso.aix
 620 link_shlib.aix-shared: link_shlib.aix
 621 link_app.aix-shared: link_app.aix
 622 symlink.aix-shared: symlink.aix