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
  24 # LIBNAME contains just the name of the library, without prefix ("lib"
  25 # on Unix, "cyg" for certain forms under Cygwin...) or suffix (.a, .so,
  26 # .dll, ...).  This one MUST have a value when using this makefile to
  27 # build shared libraries.
  28 # For example, to build libfoo.so, you need to do the following:
  29 #LIBNAME=foo
  30 LIBNAME=
  31
  32 # STLIBNAME contains the path of the static library to build the shared
  33 # library from, for example:
  34 #STLIBNAME=libfoo.a
  35 STLIBNAME=
  36
  37 # On most Unix platforms, SHLIBNAME contains the path of the short name of
  38 # the shared library to build, for example
  39 #SHLIBNAME=libfoo.so
  40 # On Windows POSIX layers (cygwin and mingw), SHLIBNAME contains the import
  41 # library name for the shared library to be built, for example:
  42 #SHLIBNAME=libfoo.dll.a
  43
  44 # SHLIBNAME_FULL contains the path of the full name of the shared library to
  45 # build, for example:
  46 #SHLIBNAME_FULL=libfoo.so.1.2
  47 # When building DSOs, SHLIBNAME_FULL contains path of the full DSO name, for
  48 # example:
  49 #SHLIBNAME_FULL=dir/dso.so
  50 SHLIBNAME_FULL=
  51
  52 # SHLIBVERSION contains the current version of the shared library (not to
  53 # be confused with the project version)
  54 #SHLIBVERSION=1.2
  55 SHLIBVERSION=
  56
  57 # NOTE: to build shared libraries, LIBNAME, STLIBNAME, SHLIBNAME and
  58 # SHLIBNAME_FULL MUST have values when using this makefile, and in some
  59 # cases, SHLIBVERSION as well.  To build DSOs, SHLIBNAME_FULL MUST have
  60 # a value, the rest can be left alone.
  61
  62
  63 # APPNAME contains just the name of the application, without suffix (""
  64 # on Unix, ".exe" on Windows, ...).  This one MUST have a value when using
  65 # this makefile to build applications.
  66 # For example, to build foo, you need to do the following:
  67 #APPNAME=foo
  68 APPNAME=
  69
  70 # SRCDIR is the top directory of the source tree.
  71 SRCDIR=.
  72
  73 # OBJECTS contains all the object files to link together into the application.
  74 # This must contain at least one object file.
  75 #OBJECTS=foo.o
  76 OBJECTS=
  77
  78 # LIBEXTRAS contains extra modules to link together with the library.
  79 # For example, if a second library, say libbar.a needs to be linked into
  80 # libfoo.so, you need to do the following:
  81 #LIBEXTRAS=libbar.a
  82 # Note that this MUST be used when using the link_dso targets, to hold the
  83 # names of all object files that go into the target shared object.
  84 LIBEXTRAS=
  85
  86 # LIBDEPS contains all the flags necessary to cover all necessary
  87 # dependencies to other libraries.
  88 LIBDEPS=
  89
  90 #------------------------------------------------------------------------------
  91 # The rest is private to this makefile.
  92
  93 SET_X=:
  94 #SET_X=set -x
  95
  96 top:
  97         echo "Trying to use this makefile interactively?  Don't."
  98
  99 LINK_APP=       \
 100   ( $(SET_X);   \
 101     LIBDEPS="$${LIBDEPS:-$(LIBDEPS)}"; \
 102     LDCMD="$${LDCMD:-$(CC)}"; LDFLAGS="$${LDFLAGS:-$(CFLAGS) $(LDFLAGS)}"; \
 103     LIBPATH=`for x in $$LIBDEPS; do echo $$x; done | sed -e 's/^ *-L//;t' -e d | uniq`; \
 104     LIBPATH=`echo $$LIBPATH | sed -e 's/ /:/g'`; \
 105     echo LD_LIBRARY_PATH=$$LIBPATH:$$LD_LIBRARY_PATH \
 106         $${LDCMD} $${LDFLAGS} -o $${APPNAME:=$(APPNAME)} $(OBJECTS) $${LIBDEPS}; \
 107     LD_LIBRARY_PATH=$$LIBPATH:$$LD_LIBRARY_PATH \
 108     $${LDCMD} $${LDFLAGS} -o $${APPNAME:=$(APPNAME)} $(OBJECTS) $${LIBDEPS} )
 109
 110 LINK_SO=        \
 111   ( $(SET_X);   \
 112     LIBDEPS="$${LIBDEPS:-$(LIBDEPS)}"; \
 113     SHAREDCMD="$${SHAREDCMD:-$(CC)}"; \
 114     SHAREDFLAGS="$${SHAREDFLAGS:-$(CFLAGS) $(SHARED_LDFLAGS)}"; \
 115     LIBPATH=`for x in $$LIBDEPS; do echo $$x; done | sed -e 's/^ *-L//;t' -e d | uniq`; \
 116     LIBPATH=`echo $$LIBPATH | sed -e 's/ /:/g'`; \
 117     echo LD_LIBRARY_PATH=$$LIBPATH:$$LD_LIBRARY_PATH \
 118          $${SHAREDCMD} $${SHAREDFLAGS} \
 119              -o $(SHLIBNAME_FULL) \
 120              $$ALLSYMSFLAGS $$SHOBJECTS $$NOALLSYMSFLAGS $$LIBDEPS; \
 121     LD_LIBRARY_PATH=$$LIBPATH:$$LD_LIBRARY_PATH \
 122     $${SHAREDCMD} $${SHAREDFLAGS} \
 123         -o $(SHLIBNAME_FULL) \
 124         $$ALLSYMSFLAGS $$SHOBJECTS $$NOALLSYMSFLAGS $$LIBDEPS \
 125   ) && $(SYMLINK_SO)
 126
 127 SYMLINK_SO=     \
 128         if [ -n "$$INHIBIT_SYMLINKS" ]; then :; else \
 129                 if [ -n "$(SHLIBNAME_FULL)" -a -n "$(SHLIBNAME)" -a \
 130                      "$(SHLIBNAME_FULL)" != "$(SHLIBNAME)" ]; then \
 131                         ( $(SET_X); \
 132                           rm -f $(SHLIBNAME); \
 133                           ln -s $(SHLIBNAME_FULL) $(SHLIBNAME) ); \
 134                 fi; \
 135         fi
 136
 137 LINK_SO_SHLIB=  SHOBJECTS="$(STLIBNAME) $(LIBEXTRAS)"; $(LINK_SO)
 138 LINK_SO_DSO=    INHIBIT_SYMLINKS=yes; SHOBJECTS="$(LIBEXTRAS)"; $(LINK_SO)
 139
 140 LINK_SO_SHLIB_VIA_O=    \
 141   SHOBJECTS=$(STLIBNAME).o; \
 142   ALL=$$ALLSYMSFLAGS; ALLSYMSFLAGS=; NOALLSYMSFLAGS=; \
 143   ( echo ld $(LDFLAGS) -r -o $$SHOBJECTS $$ALL $(STLIBNAME) $(LIBEXTRAS); \
 144     ld $(LDFLAGS) -r -o $$SHOBJECTS $$ALL $(STLIBNAME) $(LIBEXTRAS) ); \
 145   $(LINK_SO) && ( echo rm -f $$SHOBJECTS; rm -f $$SHOBJECTS )
 146
 147 LINK_SO_SHLIB_UNPACKED= \
 148   UNPACKDIR=link_tmp.$$$$; rm -rf $$UNPACKDIR; mkdir $$UNPACKDIR; \
 149   (cd $$UNPACKDIR; ar x ../$(STLIBNAME)) && \
 150   ([ -z "$(LIBEXTRAS)" ] || cp $(LIBEXTRAS) $$UNPACKDIR) && \
 151   SHOBJECTS=$$UNPACKDIR/*.o; \
 152   $(LINK_SO) && rm -rf $$UNPACKDIR
 153
 154 DETECT_GNU_LD=($(CC) -Wl,-V /dev/null 2>&1 | grep '^GNU ld' )>/dev/null
 155
 156 DO_GNU_SO_COMMON=\
 157         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -Wl,-Bsymbolic -Wl,-soname=$(SHLIBNAME_FULL)"
 158 DO_GNU_DSO=\
 159         $(DO_GNU_SO_COMMON)
 160 DO_GNU_SO=\
 161         ALLSYMSFLAGS='-Wl,--whole-archive'; \
 162         NOALLSYMSFLAGS='-Wl,--no-whole-archive'; \
 163         $(DO_GNU_SO_COMMON)
 164 DO_GNU_APP=LDFLAGS="$(CFLAGS) $(LDFLAGS)"
 165
 166 #This is rather special.  It's a special target with which one can link
 167 #applications without bothering with any features that have anything to
 168 #do with shared libraries, for example when linking against static
 169 #libraries.  It's mostly here to avoid a lot of conditionals everywhere
 170 #else...
 171 link_app.:
 172         $(LINK_APP)
 173
 174 link_dso.gnu:
 175         @ $(DO_GNU_DSO); $(LINK_SO_DSO)
 176 link_shlib.gnu:
 177         @ $(DO_GNU_SO); $(LINK_SO_SHLIB)
 178 link_app.gnu:
 179         @ $(DO_GNU_APP); $(LINK_APP)
 180
 181 link_shlib.linux-shared:
 182         @$(PERL) $(SRCDIR)/util/mkdef.pl $(LIBNAME) linux >$(LIBNAME).map; \
 183         $(DO_GNU_SO); \
 184         ALLSYMSFLAGS='-Wl,--whole-archive,--version-script=$(LIBNAME).map'; \
 185         $(LINK_SO_SHLIB)
 186
 187 link_dso.bsd:
 188         @if $(DETECT_GNU_LD); then $(DO_GNU_DSO); else \
 189         LIBDEPS=" "; \
 190         ALLSYMSFLAGS=; \
 191         NOALLSYMSFLAGS=; \
 192         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -nostdlib"; \
 193         fi; $(LINK_SO_DSO)
 194 link_shlib.bsd:
 195         @if $(DETECT_GNU_LD); then $(DO_GNU_SO); else \
 196         LIBDEPS=" "; \
 197         ALLSYMSFLAGS="-Wl,-Bforcearchive"; \
 198         NOALLSYMSFLAGS=; \
 199         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -nostdlib"; \
 200         fi; $(LINK_SO_SHLIB)
 201 link_app.bsd:
 202         @if $(DETECT_GNU_LD); then $(DO_GNU_APP); else \
 203         LDFLAGS="$(CFLAGS) $(LDFLAGS)"; \
 204         fi; $(LINK_APP)
 205
 206 # For Darwin AKA Mac OS/X (dyld)
 207 # Originally link_dso.darwin produced .so, because it was hard-coded
 208 # in dso_dlfcn module. At later point dso_dlfcn switched to .dylib
 209 # extension in order to allow for run-time linking with vendor-
 210 # supplied shared libraries such as libz, so that link_dso.darwin had
 211 # to be harmonized with it. This caused minor controversy, because
 212 # it was believed that dlopen can't be used to dynamically load
 213 # .dylib-s, only so called bundle modules (ones linked with -bundle
 214 # flag). The belief seems to be originating from pre-10.4 release,
 215 # where dlfcn functionality was emulated by dlcompat add-on. In
 216 # 10.4 dlopen was rewritten as native part of dyld and is documented
 217 # to be capable of loading both dynamic libraries and bundles. In
 218 # order to provide compatibility with pre-10.4 dlopen, modules are
 219 # linked with -bundle flag, which makes .dylib extension misleading.
 220 # It works, because dlopen is [and always was] extension-agnostic.
 221 # Alternative to this heuristic approach is to develop specific
 222 # MacOS X dso module relying on whichever "native" dyld interface.
 223 link_dso.darwin:
 224         @ ALLSYMSFLAGS=''; \
 225         NOALLSYMSFLAGS=''; \
 226         SHAREDFLAGS="$(CFLAGS) `echo $(SHARED_LDFLAGS) | sed s/dynamiclib/bundle/`"; \
 227         $(LINK_SO_DSO)
 228 link_shlib.darwin:
 229         @ ALLSYMSFLAGS='-all_load'; \
 230         NOALLSYMSFLAGS=''; \
 231         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -current_version $(SHLIBVERSION) -compatibility_version $(SHLIBVERSION) -install_name $(INSTALLTOP)/$(LIBDIR)/$(SHLIBNAME_FULL)"; \
 232         $(LINK_SO_SHLIB)
 233 link_app.darwin:        # is there run-path on darwin?
 234         $(LINK_APP)
 235
 236 link_dso.cygwin:
 237         @ALLSYMSFLAGS=''; \
 238         NOALLSYMSFLAGS=''; \
 239         base=-Wl,--enable-auto-image-base; \
 240         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared $$base -Wl,-Bsymbolic"; \
 241         $(LINK_SO_DSO)
 242 link_shlib.cygwin:
 243         @ INHIBIT_SYMLINKS=yes; \
 244         echo "$(PERL) $(SRCDIR)/util/mkrc.pl $(SHLIBNAME_FULL) |" \
 245                      "$(RC) $(SHARED_RCFLAGS) -o rc.o"; \
 246         $(PERL) $(SRCDIR)/util/mkrc.pl $(SHLIBNAME_FULL) | \
 247                 $(RC) $(SHARED_RCFLAGS) -o rc.o; \
 248         ALLSYMSFLAGS='-Wl,--whole-archive'; \
 249         NOALLSYMSFLAGS='-Wl,--no-whole-archive'; \
 250         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -Wl,--enable-auto-image-base -Wl,-Bsymbolic -Wl,--out-implib,$(SHLIBNAME) rc.o"; \
 251         $(LINK_SO_SHLIB) || exit 1; \
 252         rm rc.o
 253 link_app.cygwin:
 254         $(LINK_APP)
 255
 256 # link_dso.mingw-shared and link_app.mingw-shared are mapped to the
 257 # corresponding cygwin targets, as they do the exact same thing.
 258 link_shlib.mingw:
 259         @ INHIBIT_SYMLINKS=yes; \
 260         base=; [ $(LIBNAME) = "crypto" -a -n "$(FIPSCANLIB)" ] && base=-Wl,--image-base,0x63000000; \
 261         $(PERL) $(SRCDIR)/util/mkdef.pl 32 $(LIBNAME) \
 262                 | sed -e 's|^\(LIBRARY  *\)$(LIBNAME)32|\1$(SHLIBNAME_FULL)|' \
 263                 > $(LIBNAME).def; \
 264         echo "$(PERL) $(SRCDIR)/util/mkrc.pl $(SHLIBNAME_FULL) |" \
 265                 "$(RC) $(SHARED_RCFLAGS) -o rc.o"; \
 266         $(PERL) $(SRCDIR)/util/mkrc.pl $(SHLIBNAME_FULL) | \
 267                 $(RC) $(SHARED_RCFLAGS) -o rc.o; \
 268         ALLSYMSFLAGS='-Wl,--whole-archive'; \
 269         NOALLSYMSFLAGS='-Wl,--no-whole-archive'; \
 270         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared $$base -Wl,-Bsymbolic -Wl,--out-implib,$(SHLIBNAME) $(LIBNAME).def rc.o"; \
 271         $(LINK_SO_SHLIB) || exit 1; \
 272         rm $(LIBNAME).def rc.o
 273
 274 link_dso.alpha-osf1:
 275         @ if $(DETECT_GNU_LD); then \
 276                 $(DO_GNU_DSO); \
 277         else \
 278                 ALLSYMSFLAGS=''; \
 279                 NOALLSYMSFLAGS=''; \
 280                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -Wl,-B,symbolic"; \
 281         fi; \
 282         $(LINK_SO_DSO)
 283 link_shlib.alpha-osf1:
 284         @ if $(DETECT_GNU_LD); then \
 285                 $(DO_GNU_SO); \
 286         else \
 287                 ALLSYMSFLAGS='-all'; \
 288                 NOALLSYMSFLAGS='-none'; \
 289                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -Wl,-B,symbolic -set_version $(SHLIBVERSION)"; \
 290         fi; \
 291         $(LINK_SO_SHLIB)
 292 link_app.alpha-osf1:
 293         @if $(DETECT_GNU_LD); then \
 294                 $(DO_GNU_APP); \
 295         else \
 296                 LDFLAGS="$(CFLAGS) $(LDFLAGS)"; \
 297         fi; \
 298         $(LINK_APP)
 299
 300 link_dso.solaris:
 301         @ if $(DETECT_GNU_LD); then \
 302                 $(DO_GNU_DSO); \
 303         else \
 304                 ALLSYMSFLAGS=""; \
 305                 NOALLSYMSFLAGS=""; \
 306                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -h $(SHLIBNAME_FULL) -Wl,-Bsymbolic"; \
 307         fi; \
 308         $(LINK_SO_DSO)
 309 link_shlib.solaris:
 310         @ if $(DETECT_GNU_LD); then \
 311                 $(DO_GNU_SO); \
 312         else \
 313                 $(PERL) $(SRCDIR)/util/mkdef.pl $(LIBNAME) linux >$(LIBNAME).map; \
 314                 ALLSYMSFLAGS="-Wl,-z,allextract,-M,$(LIBNAME).map"; \
 315                 NOALLSYMSFLAGS="-Wl,-z,defaultextract"; \
 316                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -h $(SHLIBNAME_FULL) -Wl,-Bsymbolic"; \
 317         fi; \
 318         $(LINK_SO_SHLIB)
 319 link_app.solaris:
 320         @ if $(DETECT_GNU_LD); then \
 321                 $(DO_GNU_APP); \
 322         else \
 323                 LDFLAGS="$(CFLAGS) $(LDFLAGS)"; \
 324         fi; \
 325         $(LINK_APP)
 326
 327 # OpenServer 5 native compilers used
 328 link_dso.svr3:
 329         @ if $(DETECT_GNU_LD); then \
 330                 $(DO_GNU_DSO); \
 331         else \
 332                 ALLSYMSFLAGS=''; \
 333                 NOALLSYMSFLAGS=''; \
 334                 SHAREDFLAGS="$(CFLAGS) -G -h $(SHLIBNAME_FULL)"; \
 335         fi; \
 336         $(LINK_SO_DSO)
 337 link_shlib.svr3:
 338         @ if $(DETECT_GNU_LD); then \
 339                 $(DO_GNU_SO); \
 340         else \
 341                 ALLSYMSFLAGS=''; \
 342                 NOALLSYMSFLAGS=''; \
 343                 SHAREDFLAGS="$(CFLAGS) -G -h $(SHLIBNAME_FULL)"; \
 344         fi; \
 345         $(LINK_SO_SHLIB_UNPACKED)
 346 link_app.svr3:
 347         @$(DETECT_GNU_LD) && $(DO_GNU_APP); \
 348         $(LINK_APP)
 349
 350 # UnixWare 7 and OpenUNIX 8 native compilers used
 351 link_dso.svr5:
 352         @ if $(DETECT_GNU_LD); then \
 353                 $(DO_GNU_DSO); \
 354         else \
 355                 SHARE_FLAG='-G'; \
 356                 ($(CC) -v 2>&1 | grep gcc) > /dev/null && SHARE_FLAG='-shared'; \
 357                 ALLSYMSFLAGS=''; \
 358                 NOALLSYMSFLAGS=''; \
 359                 SHAREDFLAGS="$(CFLAGS) $${SHARE_FLAG} -h $(SHLIBNAME_FULL)"; \
 360         fi; \
 361         $(LINK_SO_DSO)
 362 link_shlib.svr5:
 363         @ if $(DETECT_GNU_LD); then \
 364                 $(DO_GNU_SO); \
 365         else \
 366                 SHARE_FLAG='-G'; \
 367                 ($(CC) -v 2>&1 | grep gcc) > /dev/null && SHARE_FLAG='-shared'; \
 368                 ALLSYMSFLAGS=''; \
 369                 NOALLSYMSFLAGS=''; \
 370                 SHAREDFLAGS="$(CFLAGS) $${SHARE_FLAG} -h $(SHLIBNAME_FULL)"; \
 371         fi; \
 372         $(LINK_SO_SHLIB_UNPACKED)
 373 link_app.svr5:
 374         @$(DETECT_GNU_LD) && $(DO_GNU_APP); \
 375         $(LINK_APP)
 376
 377 link_dso.irix:
 378         @ if $(DETECT_GNU_LD); then \
 379                 $(DO_GNU_DSO); \
 380         else \
 381                 ALLSYMSFLAGS=""; \
 382                 NOALLSYMSFLAGS=""; \
 383                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -Wl,-soname,$(SHLIBNAME_FULL),-B,symbolic"; \
 384         fi; \
 385         $(LINK_SO_DSO)
 386 link_shlib.irix:
 387         @ if $(DETECT_GNU_LD); then \
 388                 $(DO_GNU_SO); \
 389         else \
 390                 MINUSWL=""; \
 391                 ($(CC) -v 2>&1 | grep gcc) > /dev/null && MINUSWL="-Wl,"; \
 392                 ALLSYMSFLAGS="$${MINUSWL}-all"; \
 393                 NOALLSYMSFLAGS="$${MINUSWL}-none"; \
 394                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -Wl,-soname,$(SHLIBNAME_FULL),-B,symbolic"; \
 395         fi; \
 396         $(LINK_SO_SHLIB)
 397 link_app.irix:
 398         @LDFLAGS="$(CFLAGS) $(LDFLAGS)"; \
 399         $(LINK_APP)
 400
 401 # 32-bit PA-RISC HP-UX embeds the -L pathname of libs we link with, so
 402 # we compensate for it with +cdp ../: and +cdp ./:. Yes, these rewrite
 403 # rules imply that we can only link one level down in catalog structure,
 404 # but that's what takes place for the moment of this writing. +cdp option
 405 # was introduced in HP-UX 11.x and applies in 32-bit PA-RISC link
 406 # editor context only [it's simply ignored in other cases, which are all
 407 # ELFs by the way].
 408 #
 409 link_dso.hpux:
 410         @if $(DETECT_GNU_LD); then $(DO_GNU_DSO); else \
 411         ALLSYMSFLAGS=''; \
 412         NOALLSYMSFLAGS=''; \
 413         expr $(PLATFORM) : 'hpux64' > /dev/null && ALLSYMSFLAGS='-Wl,+forceload'; \
 414         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -Wl,-B,symbolic,+vnocompatwarnings,-z,+s,+h,$(SHLIBNAME_FULL),+cdp,../:,+cdp,./:"; \
 415         fi; \
 416         rm -f $(SHLIBNAME_FULL) || :; \
 417         $(LINK_SO_DSO) && chmod a=rx $(SHLIBNAME_FULL)
 418 link_shlib.hpux:
 419         @if $(DETECT_GNU_LD); then $(DO_GNU_SO); else \
 420         ALLSYMSFLAGS='-Wl,-Fl'; \
 421         NOALLSYMSFLAGS=''; \
 422         expr $(PLATFORM) : 'hpux64' > /dev/null && ALLSYMSFLAGS='-Wl,+forceload'; \
 423         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -Wl,-B,symbolic,+vnocompatwarnings,-z,+s,+h,$(SHLIBNAME_FULL),+cdp,../:,+cdp,./:"; \
 424         fi; \
 425         rm -f $(SHLIBNAME_FULL) || :; \
 426         $(LINK_SO_SHLIB) && chmod a=rx $(SHLIBNAME_FULL)
 427 link_app.hpux:
 428         @if $(DETECT_GNU_LD); then $(DO_GNU_APP); else \
 429         LDFLAGS="$(CFLAGS) $(LDFLAGS) -Wl,+s,+cdp,../:,+cdp,./:"; \
 430         fi; \
 431         $(LINK_APP)
 432
 433 link_dso.aix:
 434         @OBJECT_MODE=`expr "x$(SHARED_LDFLAGS)" : 'x\-[a-z]*\(64\)'` || :; \
 435         OBJECT_MODE=$${OBJECT_MODE:-32}; export OBJECT_MODE; \
 436         ALLSYMSFLAGS=''; \
 437         NOALLSYMSFLAGS=''; \
 438         SHAREDFLAGS='$(CFLAGS) $(SHARED_LDFLAGS) -Wl,-bexpall,-bnolibpath,-bM:SRE'; \
 439         rm -f $(SHLIBNAME_FULL) 2>&1 > /dev/null ; \
 440         $(LINK_SO_DSO);
 441 link_shlib.aix:
 442         @ OBJECT_MODE=`expr "x$(SHARED_LDFLAGS)" : 'x\-[a-z]*\(64\)'` || : ; \
 443         OBJECT_MODE=$${OBJECT_MODE:-32}; export OBJECT_MODE; \
 444         ALLSYMSFLAGS='-bnogc'; \
 445         NOALLSYMSFLAGS=''; \
 446         SHAREDFLAGS='$(CFLAGS) $(SHARED_LDFLAGS) -Wl,-bexpall,-bnolibpath,-bM:SRE'; \
 447         rm -f $(SHLIBNAME_FULL) 2>&1 > /dev/null ; \
 448         $(LINK_SO_SHLIB_VIA_O)
 449 link_app.aix:
 450         LDFLAGS="$(CFLAGS) -Wl,-bsvr4 $(LDFLAGS)"; \
 451         $(LINK_APP)
 452
 453
 454 # Targets to build symbolic links when needed
 455 symlink.gnu symlink.solaris symlink.svr3 symlink.svr5 symlink.irix \
 456 symlink.aix:
 457         @ $(SYMLINK_SO)
 458 symlink.darwin:
 459         @ $(SYMLINK_SO)
 460 symlink.hpux:
 461         @ $(SYMLINK_SO)
 462 # The following lines means those specific architectures do no symlinks
 463 symlink.cygwin symlink.alpha-osf1 symlink.tru64 symlink.tru64-rpath:
 464
 465 # Compatibility targets
 466 link_dso.bsd-gcc-shared link_dso.linux-shared link_dso.gnu-shared: link_dso.gnu
 467 link_shlib.bsd-gcc-shared: link_shlib.linux-shared
 468 link_shlib.gnu-shared: link_shlib.gnu
 469 link_app.bsd-gcc-shared link_app.linux-shared link_app.gnu-shared: link_app.gnu
 470 symlink.bsd-gcc-shared symlink.bsd-shared symlink.linux-shared symlink.gnu-shared: symlink.gnu
 471 link_dso.bsd-shared: link_dso.bsd
 472 link_shlib.bsd-shared: link_shlib.bsd
 473 link_app.bsd-shared: link_app.bsd
 474 link_dso.darwin-shared: link_dso.darwin
 475 link_shlib.darwin-shared: link_shlib.darwin
 476 link_app.darwin-shared: link_app.darwin
 477 symlink.darwin-shared: symlink.darwin
 478 link_dso.cygwin-shared: link_dso.cygwin
 479 link_shlib.cygwin-shared: link_shlib.cygwin
 480 link_app.cygwin-shared: link_app.cygwin
 481 symlink.cygwin-shared: symlink.cygwin
 482 link_dso.mingw-shared: link_dso.cygwin
 483 link_shlib.mingw-shared: link_shlib.mingw
 484 link_app.mingw-shared: link_app.cygwin
 485 symlink.mingw-shared: symlink.cygwin
 486 link_dso.alpha-osf1-shared: link_dso.alpha-osf1
 487 link_shlib.alpha-osf1-shared: link_shlib.alpha-osf1
 488 link_app.alpha-osf1-shared: link_app.alpha-osf1
 489 symlink.alpha-osf1-shared: symlink.alpha-osf1
 490 link_dso.tru64-shared: link_dso.tru64
 491 link_shlib.tru64-shared: link_shlib.tru64
 492 link_app.tru64-shared: link_app.tru64
 493 symlink.tru64-shared: symlink.tru64
 494 link_dso.tru64-shared-rpath: link_dso.tru64-rpath
 495 link_shlib.tru64-shared-rpath: link_shlib.tru64-rpath
 496 link_app.tru64-shared-rpath: link_app.tru64-rpath
 497 symlink.tru64-shared-rpath: symlink.tru64-rpath
 498 link_dso.solaris-shared: link_dso.solaris
 499 link_shlib.solaris-shared: link_shlib.solaris
 500 link_app.solaris-shared: link_app.solaris
 501 symlink.solaris-shared: symlink.solaris
 502 link_dso.svr3-shared: link_dso.svr3
 503 link_shlib.svr3-shared: link_shlib.svr3
 504 link_app.svr3-shared: link_app.svr3
 505 symlink.svr3-shared: symlink.svr3
 506 link_dso.svr5-shared: link_dso.svr5
 507 link_shlib.svr5-shared: link_shlib.svr5
 508 link_app.svr5-shared: link_app.svr5
 509 symlink.svr5-shared: symlink.svr5
 510 link_dso.irix-shared: link_dso.irix
 511 link_shlib.irix-shared: link_shlib.irix
 512 link_app.irix-shared: link_app.irix
 513 symlink.irix-shared: symlink.irix
 514 link_dso.hpux-shared: link_dso.hpux
 515 link_shlib.hpux-shared: link_shlib.hpux
 516 link_app.hpux-shared: link_app.hpux
 517 symlink.hpux-shared: symlink.hpux
 518 link_dso.aix-shared: link_dso.aix
 519 link_shlib.aix-shared: link_shlib.aix
 520 link_app.aix-shared: link_app.aix
 521 symlink.aix-shared: symlink.aix