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=
  15 SHARED_LDFLAGS=
  16
  17 NM=nm
  18
  19 # LIBNAME contains just the name of the library, without prefix ("lib"
  20 # on Unix, "cyg" for certain forms under Cygwin...) or suffix (.a, .so,
  21 # .dll, ...).  This one MUST have a value when using this makefile to
  22 # build shared libraries.
  23 # For example, to build libfoo.so, you need to do the following:
  24 #LIBNAME=foo
  25 LIBNAME=
  26
  27 # APPNAME contains just the name of the application, without suffix (""
  28 # on Unix, ".exe" on Windows, ...).  This one MUST have a value when using
  29 # this makefile to build applications.
  30 # For example, to build foo, you need to do the following:
  31 #APPNAME=foo
  32 APPNAME=
  33
  34 # OBJECTS contains all the object files to link together into the application.
  35 # This must contain at least one object file.
  36 #OBJECTS=foo.o
  37 OBJECTS=
  38
  39 # LIBEXTRAS contains extra modules to link together with the library.
  40 # For example, if a second library, say libbar.a needs to be linked into
  41 # libfoo.so, you need to do the following:
  42 #LIBEXTRAS=libbar.a
  43 # Note that this MUST be used when using the link_o targets, to hold the
  44 # names of all object files that go into the target library.
  45 LIBEXTRAS=
  46
  47 # LIBVERSION contains the current version of the library.
  48 # For example, to build libfoo.so.1.2, you need to do the following:
  49 #LIBVERSION=1.2
  50 LIBVERSION=
  51
  52 # LIBCOMPATVERSIONS contains the compatibility versions (a list) of
  53 # the library.  They MUST be in decreasing order.
  54 # For example, if libfoo.so.1.2.1 is backward compatible with libfoo.so.1.2
  55 # and libfoo.so.1, you need to do the following:
  56 #LIBCOMPATVERSIONS=1.2 1
  57 # Note that on systems that use sonames, the last number will appear as
  58 # part of it.
  59 # It's also possible, for systems that support it (Tru64, for example),
  60 # to add extra compatibility info with more precision, by adding a second
  61 # list of versions, separated from the first with a semicolon, like this:
  62 #LIBCOMPATVERSIONS=1.2 1;1.2.0 1.1.2 1.1.1 1.1.0 1.0.0
  63 LIBCOMPATVERSIONS=
  64
  65 # LIBDEPS contains all the flags necessary to cover all necessary
  66 # dependencies to other libraries.
  67 LIBDEPS=
  68
  69 #------------------------------------------------------------------------------
  70 # The rest is private to this makefile.
  71
  72 SET_X=:
  73 #SET_X=set -x
  74
  75 top:
  76         echo "Trying to use this makefile interactively?  Don't."
  77
  78 CALC_VERSIONS=  \
  79         SHLIB_COMPAT=; SHLIB_SOVER=; \
  80         if [ -n "$(LIBVERSION)$(LIBCOMPATVERSIONS)" ]; then \
  81                 prev=""; \
  82                 for v in `echo "$(LIBVERSION) $(LIBCOMPATVERSIONS)" | cut -d';' -f1`; do \
  83                         SHLIB_SOVER_NODOT=$$v; \
  84                         SHLIB_SOVER=.$$v; \
  85                         if [ -n "$$prev" ]; then \
  86                                 SHLIB_COMPAT="$$SHLIB_COMPAT .$$prev"; \
  87                         fi; \
  88                         prev=$$v; \
  89                 done; \
  90         fi
  91
  92 LINK_APP=       \
  93   ( $(SET_X);   \
  94     LIBDEPS="$${LIBDEPS:-$(LIBDEPS)}"; \
  95     LDCMD="$${LDCMD:-$(CC)}"; LDFLAGS="$${LDFLAGS:-$(CFLAGS)}"; \
  96     LIBPATH=`for x in $$LIBDEPS; do if echo $$x | grep '^ *-L' > /dev/null 2>&1; then echo $$x | sed -e 's/^ *-L//'; fi; done | uniq`; \
  97     LIBPATH=`echo $$LIBPATH | sed -e 's/ /:/g'`; \
  98     LD_LIBRARY_PATH=$$LIBPATH:$$LD_LIBRARY_PATH \
  99     $${LDCMD} $${LDFLAGS} -o $${APPNAME:=$(APPNAME)} $(OBJECTS) $${LIBDEPS} )
 100
 101 LINK_SO=        \
 102   ( $(SET_X);   \
 103     LIBDEPS="$${LIBDEPS:-$(LIBDEPS)}"; \
 104     SHAREDCMD="$${SHAREDCMD:-$(CC)}"; \
 105     SHAREDFLAGS="$${SHAREDFLAGS:-$(CFLAGS) $(SHARED_LDFLAGS)}"; \
 106     $(NM) -Pg $$SHOBJECTS | grep ' [BDT] ' | cut -f1 -d' ' > lib$(LIBNAME).exp; \
 107     LIBPATH=`for x in $$LIBDEPS; do if echo $$x | grep '^ *-L' > /dev/null 2>&1; then echo $$x | sed -e 's/^ *-L//'; fi; done | uniq`; \
 108     LIBPATH=`echo $$LIBPATH | sed -e 's/ /:/g'`; \
 109     LD_LIBRARY_PATH=$$LIBPATH:$$LD_LIBRARY_PATH \
 110     $${SHAREDCMD} $${SHAREDFLAGS} \
 111         -o $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX \
 112         $$ALLSYMSFLAGS $$SHOBJECTS $$NOALLSYMSFLAGS $$LIBDEPS \
 113   ) && $(SYMLINK_SO); \
 114   ( $(SET_X); rm -f lib$(LIBNAME).exp )
 115
 116 SYMLINK_SO=     \
 117         if [ -n "$$INHIBIT_SYMLINKS" ]; then :; else \
 118                 prev=$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX; \
 119                 if [ -n "$$SHLIB_COMPAT" ]; then \
 120                         for x in $$SHLIB_COMPAT; do \
 121                                 ( $(SET_X); rm -f $$SHLIB$$x$$SHLIB_SUFFIX; \
 122                                   ln -s $$prev $$SHLIB$$x$$SHLIB_SUFFIX ); \
 123                                 prev=$$SHLIB$$x$$SHLIB_SUFFIX; \
 124                         done; \
 125                 fi; \
 126                 if [ -n "$$SHLIB_SOVER" ]; then \
 127                         ( $(SET_X); rm -f $$SHLIB$$SHLIB_SUFFIX; \
 128                           ln -s $$prev $$SHLIB$$SHLIB_SUFFIX ); \
 129                 fi; \
 130         fi
 131
 132 LINK_SO_A=      SHOBJECTS="lib$(LIBNAME).a $(LIBEXTRAS)"; $(LINK_SO)
 133 LINK_SO_O=      SHOBJECTS="$(LIBEXTRAS)"; $(LINK_SO)
 134
 135 LINK_SO_A_VIA_O=        \
 136   SHOBJECTS=lib$(LIBNAME).o; \
 137   ALL=$$ALLSYMSFLAGS; ALLSYMSFLAGS=; NOALLSYMSFLAGS=; \
 138   ( $(SET_X); \
 139     ld $(LDFLAGS) -r -o lib$(LIBNAME).o $$ALL lib$(LIBNAME).a $(LIBEXTRAS) ); \
 140   $(LINK_SO) && rm -f $(LIBNAME).o
 141
 142 LINK_SO_A_UNPACKED=     \
 143   UNPACKDIR=link_tmp.$$$$; rm -rf $$UNPACKDIR; mkdir $$UNPACKDIR; \
 144   (cd $$UNPACKDIR; ar x ../lib$(LIBNAME).a) && \
 145   ([ -z "$(LIBEXTRAS)" ] || cp $(LIBEXTRAS) $$UNPACKDIR) && \
 146   SHOBJECTS=$$UNPACKDIR/*.o; \
 147   $(LINK_SO) && rm -rf $$UNPACKDIR
 148
 149 DETECT_GNU_LD=(${CC} -Wl,-V /dev/null 2>&1 | grep '^GNU ld' )>/dev/null
 150
 151 DO_GNU_SO=$(CALC_VERSIONS); \
 152         SHLIB=lib$(LIBNAME).so; \
 153         SHLIB_SUFFIX=; \
 154         ALLSYMSFLAGS='-Wl,--whole-archive'; \
 155         NOALLSYMSFLAGS='-Wl,--no-whole-archive'; \
 156         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -Wl,-Bsymbolic -Wl,-soname=$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"
 157
 158 DO_GNU_APP=LDFLAGS="$(CFLAGS) -Wl,-rpath,$(LIBRPATH)"
 159
 160 #This is rather special.  It's a special target with which one can link
 161 #applications without bothering with any features that have anything to
 162 #do with shared libraries, for example when linking against static
 163 #libraries.  It's mostly here to avoid a lot of conditionals everywhere
 164 #else...
 165 link_app.:
 166         $(LINK_APP)
 167
 168 link_o.gnu:
 169         @ $(DO_GNU_SO); $(LINK_SO_O)
 170 link_a.gnu:
 171         @ $(DO_GNU_SO); $(LINK_SO_A)
 172 link_app.gnu:
 173         @ $(DO_GNU_APP); $(LINK_APP)
 174
 175 DO_BEOS_SO=     SHLIB=lib$(LIBNAME).so; \
 176         SHLIB_SUFFIX=; \
 177         ALLSYMSFLAGS='-Wl,--whole-archive'; \
 178         NOALLSYMSFLAGS='-Wl,--no-whole-archive'; \
 179         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -Wl,-Bsymbolic -Wl,-soname=$$SHLIB$$SHLIB_SUFFIX"
 180
 181 link_o.beos:
 182         @ $(DO_BEOS_SO); $(LINK_SO_O)
 183 link_a.beos:
 184         @ $(DO_BEOS_SO); $(LINK_SO_A)
 185
 186 link_o.bsd:
 187         @if ${DETECT_GNU_LD}; then $(DO_GNU_SO); else \
 188         $(CALC_VERSIONS); \
 189         SHLIB=lib$(LIBNAME).so; \
 190         SHLIB_SUFFIX=; \
 191         LIBDEPS=" "; \
 192         ALLSYMSFLAGS="-Wl,-Bforcearchive"; \
 193         NOALLSYMSFLAGS=; \
 194         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -nostdlib"; \
 195         fi; $(LINK_SO_O)
 196 link_a.bsd:
 197         @if ${DETECT_GNU_LD}; then $(DO_GNU_SO); else \
 198         $(CALC_VERSIONS); \
 199         SHLIB=lib$(LIBNAME).so; \
 200         SHLIB_SUFFIX=; \
 201         LIBDEPS=" "; \
 202         ALLSYMSFLAGS="-Wl,-Bforcearchive"; \
 203         NOALLSYMSFLAGS=; \
 204         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -nostdlib"; \
 205         fi; $(LINK_SO_A)
 206 link_app.bsd:
 207         @if ${DETECT_GNU_LD}; then $(DO_GNU_APP); else \
 208         LDFLAGS="$(CFLAGS) -Wl,-rpath,$(LIBPATH)"; \
 209         fi; $(LINK_APP)
 210
 211 # For Darwin AKA Mac OS/X (dyld)
 212 # link_o.darwin produces .so, because we let it use dso_dlfcn module,
 213 # which has .so extension hard-coded. One can argue that one should
 214 # develop special dso module for MacOS X. At least manual encourages
 215 # to use native NSModule(3) API and refers to dlfcn as termporary hack.
 216 link_o.darwin:
 217         @ $(CALC_VERSIONS); \
 218         SHLIB=lib$(LIBNAME); \
 219         SHLIB_SUFFIX=.so; \
 220         ALLSYMSFLAGS='-all_load'; \
 221         NOALLSYMSFLAGS=''; \
 222         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS)"; \
 223         if [ -n "$(LIBVERSION)" ]; then \
 224                 SHAREDFLAGS="$$SHAREDFLAGS -current_version $(LIBVERSION)"; \
 225         fi; \
 226         if [ -n "$$SHLIB_SOVER_NODOT" ]; then \
 227                 SHAREDFLAGS="$$SHAREDFLAGS -compatibility_version $$SHLIB_SOVER_NODOT"; \
 228         fi; \
 229         $(LINK_SO_O)
 230 link_a.darwin:
 231         @ $(CALC_VERSIONS); \
 232         SHLIB=lib$(LIBNAME); \
 233         SHLIB_SUFFIX=.dylib; \
 234         ALLSYMSFLAGS='-all_load'; \
 235         NOALLSYMSFLAGS=''; \
 236         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS)"; \
 237         if [ -n "$(LIBVERSION)" ]; then \
 238                 SHAREDFLAGS="$$SHAREDFLAGS -current_version $(LIBVERSION)"; \
 239         fi; \
 240         if [ -n "$$SHLIB_SOVER_NODOT" ]; then \
 241                 SHAREDFLAGS="$$SHAREDFLAGS -compatibility_version $$SHLIB_SOVER_NODOT"; \
 242         fi; \
 243         SHAREDFLAGS="$$SHAREDFLAGS -install_name ${INSTALLTOP}/lib/$$SHLIB${SHLIB_EXT}"; \
 244         $(LINK_SO_A)
 245 link_app.darwin:        # is there run-path on darwin?
 246         $(LINK_APP)
 247
 248 link_o.cygwin:
 249         @ $(CALC_VERSIONS); \
 250         INHIBIT_SYMLINKS=yes; \
 251         SHLIB=cyg$(LIBNAME); \
 252         expr $(PLATFORM) : 'mingw' > /dev/null && SHLIB=$(LIBNAME); \
 253         SHLIB_SUFFIX=.dll; \
 254         LIBVERSION="$(LIBVERSION)"; \
 255         SHLIB_SOVER=${LIBVERSION:+"-$(LIBVERSION)"}; \
 256         ALLSYMSFLAGS='-Wl,--whole-archive'; \
 257         NOALLSYMSFLAGS='-Wl,--no-whole-archive'; \
 258         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -Wl,-s,-Bsymbolic"; \
 259         $(LINK_SO_O)
 260 link_a.cygwin:
 261         @ $(CALC_VERSIONS); \
 262         INHIBIT_SYMLINKS=yes; \
 263         SHLIB=cyg$(LIBNAME); SHLIB_SOVER=-$(LIBVERSION); SHLIB_SUFFIX=.dll; \
 264         dll_name=$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX; extras=; \
 265         if expr $(PLATFORM) : 'mingw' > /dev/null; then \
 266                 SHLIB=$(LIBNAME); SHLIB_SOVER=32; \
 267                 extras="$(LIBNAME).def"; \
 268                 $(PERL) util/mkdef.pl 32 $(LIBNAME) > $$extras; \
 269         fi; \
 270         dll_name=$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX; \
 271         $(PERL) util/mkrc.pl $$dll_name | \
 272                 $(CROSS_COMPILE_PREFIX)windres -o rc.o; \
 273         extras="$$extras rc.o"; \
 274         ALLSYMSFLAGS='-Wl,--whole-archive'; \
 275         NOALLSYMSFLAGS='-Wl,--no-whole-archive'; \
 276         base=;  [ $(LIBNAME) = "crypto" ] && base=-Wl,--image-base,0x63000000; \
 277         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared $$base -Wl,-s,-Bsymbolic -Wl,--out-implib,lib$(LIBNAME).dll.a $$extras"; \
 278         [ -f apps/$$dll_name ] && rm apps/$$dll_name; \
 279         [ -f test/$$dll_name ] && rm test/$$dll_name; \
 280         $(LINK_SO_A) || exit 1; \
 281         rm $$extras; \
 282         cp -p $$dll_name apps/; \
 283         cp -p $$dll_name test/
 284 link_app.cygwin:
 285         @if expr "$(CFLAGS)" : '.*OPENSSL_USE_APPLINK' > /dev/null; then \
 286                 LIBDEPS="$(TOP)/crypto/applink.o $${LIBDEPS:-$(LIBDEPS)}"; \
 287                 export LIBDEPS; \
 288         fi; \
 289         $(LINK_APP)
 290
 291 link_o.alpha-osf1:
 292         @ if ${DETECT_GNU_LD}; then \
 293                 $(DO_GNU_SO); \
 294         else \
 295                 SHLIB=lib$(LIBNAME).so; \
 296                 SHLIB_SUFFIX=; \
 297                 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
 298                 if [ -n "$$SHLIB_HIST" ]; then \
 299                         SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
 300                 else \
 301                         SHLIB_HIST="$(LIBVERSION)"; \
 302                 fi; \
 303                 SHLIB_SOVER=; \
 304                 ALLSYMSFLAGS='-all'; \
 305                 NOALLSYMSFLAGS='-none'; \
 306                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared"; \
 307                 if [ -n "$$SHLIB_HIST" ]; then \
 308                         SHAREDFLAGS="$$SHAREDFLAGS -set_version $$SHLIB_HIST"; \
 309                 fi; \
 310         fi; \
 311         $(LINK_SO_O)
 312 link_a.alpha-osf1:
 313         @ if ${DETECT_GNU_LD}; then \
 314                 $(DO_GNU_SO); \
 315         else \
 316                 SHLIB=lib$(LIBNAME).so; \
 317                 SHLIB_SUFFIX=; \
 318                 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
 319                 if [ -n "$$SHLIB_HIST" ]; then \
 320                         SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
 321                 else \
 322                         SHLIB_HIST="$(LIBVERSION)"; \
 323                 fi; \
 324                 SHLIB_SOVER=; \
 325                 ALLSYMSFLAGS='-all'; \
 326                 NOALLSYMSFLAGS='-none'; \
 327                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared"; \
 328                 if [ -n "$$SHLIB_HIST" ]; then \
 329                         SHAREDFLAGS="$$SHAREDFLAGS -set_version $$SHLIB_HIST"; \
 330                 fi; \
 331         fi; \
 332         $(LINK_SO_A)
 333 link_app.alpha-osf1:
 334         @if ${DETECT_GNU_LD}; then \
 335                 $(DO_GNU_APP); \
 336         else \
 337                 LDFLAGS="$(CFLAGS) -rpath $(LIBRPATH)"; \
 338         fi; \
 339         $(LINK_APP)
 340
 341 link_o.solaris:
 342         @ if ${DETECT_GNU_LD}; then \
 343                 $(DO_GNU_SO); \
 344         else \
 345                 $(CALC_VERSIONS); \
 346                 MINUSZ='-z '; \
 347                 ($(CC) -v 2>&1 | grep gcc) > /dev/null && MINUSZ='-Wl,-z,'; \
 348                 SHLIB=lib$(LIBNAME).so; \
 349                 SHLIB_SUFFIX=; \
 350                 ALLSYMSFLAGS="$${MINUSZ}allextract"; \
 351                 NOALLSYMSFLAGS="$${MINUSZ}defaultextract"; \
 352                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX -Wl,-Bsymbolic"; \
 353         fi; \
 354         $(LINK_SO_O)
 355 link_a.solaris:
 356         @ if ${DETECT_GNU_LD}; then \
 357                 $(DO_GNU_SO); \
 358         else \
 359                 $(CALC_VERSIONS); \
 360                 MINUSZ='-z '; \
 361                 (${CC} -v 2>&1 | grep gcc) > /dev/null && MINUSZ='-Wl,-z,'; \
 362                 SHLIB=lib$(LIBNAME).so; \
 363                 SHLIB_SUFFIX=;\
 364                 ALLSYMSFLAGS="$${MINUSZ}allextract"; \
 365                 NOALLSYMSFLAGS="$${MINUSZ}defaultextract"; \
 366                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX -Wl,-Bsymbolic"; \
 367         fi; \
 368         $(LINK_SO_A)
 369 link_app.solaris:
 370         @ if ${DETECT_GNU_LD}; then \
 371                 $(DO_GNU_APP); \
 372         else \
 373                 LDFLAGS="$(CFLAGS) -R $(LIBRPATH)"; \
 374         fi; \
 375         $(LINK_APP)
 376
 377 # OpenServer 5 native compilers used
 378 link_o.svr3:
 379         @ if ${DETECT_GNU_LD}; then \
 380                 $(DO_GNU_SO); \
 381         else \
 382                 $(CALC_VERSIONS); \
 383                 SHLIB=lib$(LIBNAME).so; \
 384                 SHLIB_SUFFIX=; \
 385                 ALLSYMSFLAGS=''; \
 386                 NOALLSYMSFLAGS=''; \
 387                 SHAREDFLAGS="$(CFLAGS) -G -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 388         fi; \
 389         $(LINK_SO_O)
 390 link_a.svr3:
 391         @ if ${DETECT_GNU_LD}; then \
 392                 $(DO_GNU_SO); \
 393         else \
 394                 $(CALC_VERSIONS); \
 395                 SHLIB=lib$(LIBNAME).so; \
 396                 SHLIB_SUFFIX=; \
 397                 ALLSYMSFLAGS=''; \
 398                 NOALLSYMSFLAGS=''; \
 399                 SHAREDFLAGS="$(CFLAGS) -G -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 400         fi; \
 401         $(LINK_SO_A_UNPACKED)
 402 link_app.svr3:
 403         @${DETECT_GNU_LD} && $(DO_GNU_APP); \
 404         $(LINK_APP)
 405
 406 # UnixWare 7 and OpenUNIX 8 native compilers used
 407 link_o.svr5:
 408         @ if ${DETECT_GNU_LD}; then \
 409                 $(DO_GNU_SO); \
 410         else \
 411                 $(CALC_VERSIONS); \
 412                 SHARE_FLAG='-G'; \
 413                 ($(CC) -v 2>&1 | grep gcc) > /dev/null && SHARE_FLAG='-shared'; \
 414                 SHLIB=lib$(LIBNAME).so; \
 415                 SHLIB_SUFFIX=; \
 416                 ALLSYMSFLAGS=''; \
 417                 NOALLSYMSFLAGS=''; \
 418                 SHAREDFLAGS="$(CFLAGS) $${SHARE_FLAG} -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 419         fi; \
 420         $(LINK_SO_O)
 421 link_a.svr5:
 422         @ if ${DETECT_GNU_LD}; then \
 423                 $(DO_GNU_SO); \
 424         else \
 425                 $(CALC_VERSIONS); \
 426                 SHARE_FLAG='-G'; \
 427                 (${CC} -v 2>&1 | grep gcc) > /dev/null && SHARE_FLAG='-shared'; \
 428                 SHLIB=lib$(LIBNAME).so; \
 429                 SHLIB_SUFFIX=; \
 430                 ALLSYMSFLAGS=''; \
 431                 NOALLSYMSFLAGS=''; \
 432                 SHAREDFLAGS="$(CFLAGS) $${SHARE_FLAG} -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 433         fi; \
 434         $(LINK_SO_A_UNPACKED)
 435 link_app.svr5:
 436         @${DETECT_GNU_LD} && $(DO_GNU_APP); \
 437         $(LINK_APP)
 438
 439 link_o.irix:
 440         @ if ${DETECT_GNU_LD}; then \
 441                 $(DO_GNU_SO); \
 442         else \
 443                 $(CALC_VERSIONS); \
 444                 SHLIB=lib$(LIBNAME).so; \
 445                 SHLIB_SUFFIX=; \
 446                 MINUSWL=""; \
 447                 ($(CC) -v 2>&1 | grep gcc) > /dev/null && MINUSWL="-Wl,"; \
 448                 ALLSYMSFLAGS="$${MINUSWL}-all"; \
 449                 NOALLSYMSFLAGS="$${MINUSWL}-none"; \
 450                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -Wl,-soname,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 451         fi; \
 452         $(LINK_SO_O)
 453 link_a.irix:
 454         @ if ${DETECT_GNU_LD}; then \
 455                 $(DO_GNU_SO); \
 456         else \
 457                 $(CALC_VERSIONS); \
 458                 SHLIB=lib$(LIBNAME).so; \
 459                 SHLIB_SUFFIX=; \
 460                 MINUSWL=""; \
 461                 ($(CC) -v 2>&1 | grep gcc) > /dev/null && MINUSWL="-Wl,"; \
 462                 ALLSYMSFLAGS="$${MINUSWL}-all"; \
 463                 NOALLSYMSFLAGS="$${MINUSWL}-none"; \
 464                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -Wl,-soname,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 465         fi; \
 466         $(LINK_SO_A)
 467 link_app.irix:
 468         @LDFLAGS="$(CFLAGS) -Wl,-rpath,$(LIBRPATH)"; \
 469         $(LINK_APP)
 470
 471 # 32-bit PA-RISC HP-UX embeds the -L pathname of libs we link with, so
 472 # we compensate for it with +cdp ../: and +cdp ./:. Yes, these rewrite
 473 # rules imply that we can only link one level down in catalog structure,
 474 # but that's what takes place for the moment of this writing. +cdp option
 475 # was introduced in HP-UX 11.x and applies in 32-bit PA-RISC link
 476 # editor context only [it's simply ignored in other cases, which are all
 477 # ELFs by the way].
 478 #
 479 link_o.hpux:
 480         @if ${DETECT_GNU_LD}; then $(DO_GNU_SO); else \
 481         $(CALC_VERSIONS); \
 482         SHLIB=lib$(LIBNAME).sl; \
 483         expr "$(CFLAGS)" : '.*DSO_DLFCN' > /dev/null && SHLIB=lib$(LIBNAME).so; \
 484         SHLIB_SUFFIX=; \
 485         ALLSYMSFLAGS='-Wl,-Fl'; \
 486         NOALLSYMSFLAGS=''; \
 487         expr $(PLATFORM) : 'hpux64' > /dev/null && ALLSYMSFLAGS='-Wl,+forceload'; \
 488         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -Wl,-B,symbolic,+vnocompatwarnings,-z,+s,+h,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 489         fi; \
 490         rm -f $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX || :; \
 491         $(LINK_SO_O) && chmod a=rx $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX
 492 link_a.hpux:
 493         @if ${DETECT_GNU_LD}; then $(DO_GNU_SO); else \
 494         $(CALC_VERSIONS); \
 495         SHLIB=lib$(LIBNAME).sl; \
 496         expr $(PLATFORM) : '.*ia64' > /dev/null && SHLIB=lib$(LIBNAME).so; \
 497         SHLIB_SUFFIX=; \
 498         ALLSYMSFLAGS='-Wl,-Fl'; \
 499         NOALLSYMSFLAGS=''; \
 500         expr $(PLATFORM) : 'hpux64' > /dev/null && ALLSYMSFLAGS='-Wl,+forceload'; \
 501         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -Wl,-B,symbolic,+vnocompatwarnings,-z,+s,+h,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 502         fi; \
 503         rm -f $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX || :; \
 504         $(LINK_SO_A) && chmod a=rx $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX
 505 link_app.hpux:
 506         @if ${DETECT_GNU_LD}; then $(DO_GNU_APP); else \
 507         LDFLAGS="$(CFLAGS) -Wl,+s,+cdp,../:,+cdp,./:,+b,$(LIBRPATH)"; \
 508         fi; \
 509         $(LINK_APP)
 510
 511 link_o.aix:
 512         @ $(CALC_VERSIONS); \
 513         OBJECT_MODE=`expr x$(SHARED_LDFLAGS) : 'x\-[a-z]*\(64\)'` || :; \
 514         OBJECT_MODE=$${OBJECT_MODE:-32}; export OBJECT_MODE; \
 515         SHLIB=lib$(LIBNAME).so; \
 516         SHLIB_SUFFIX=; \
 517         ALLSYMSFLAGS=''; \
 518         NOALLSYMSFLAGS=''; \
 519         SHAREDFLAGS='$(CFLAGS) $(SHARED_LDFLAGS) -Wl,-G,-bexpall,-bnolibpath,-bM:SRE'; \
 520         $(LINK_SO_O);
 521 link_a.aix:
 522         @ $(CALC_VERSIONS); \
 523         OBJECT_MODE=`expr x$(SHARED_LDFLAGS) : 'x\-[a-z]*\(64\)'` || : ; \
 524         OBJECT_MODE=$${OBJECT_MODE:-32}; export OBJECT_MODE; \
 525         SHLIB=lib$(LIBNAME).so; \
 526         SHLIB_SUFFIX=; \
 527         ALLSYMSFLAGS='-bnogc'; \
 528         NOALLSYMSFLAGS=''; \
 529         SHAREDFLAGS='$(CFLAGS) $(SHARED_LDFLAGS) -Wl,-G,-bexpall,-bnolibpath,-bM:SRE'; \
 530         $(LINK_SO_A_VIA_O)
 531 link_app.aix:
 532         LDFLAGS="$(CFLAGS) -Wl,-brtl,-blibpath:$(LIBRPATH):$${LIBPATH:-/usr/lib:/lib}"; \
 533         $(LINK_APP)
 534
 535 link_o.reliantunix:
 536         @ $(CALC_VERSIONS); \
 537         SHLIB=lib$(LIBNAME).so; \
 538         SHLIB_SUFFIX=; \
 539         ALLSYMSFLAGS=; \
 540         NOALLSYMSFLAGS=''; \
 541         SHAREDFLAGS='$(CFLAGS) -G'; \
 542         $(LINK_SO_O)
 543 link_a.reliantunix:
 544         @ $(CALC_VERSIONS); \
 545         SHLIB=lib$(LIBNAME).so; \
 546         SHLIB_SUFFIX=; \
 547         ALLSYMSFLAGS=; \
 548         NOALLSYMSFLAGS=''; \
 549         SHAREDFLAGS='$(CFLAGS) -G'; \
 550         $(LINK_SO_A_UNPACKED)
 551 link_app.reliantunix:
 552         $(LINK_APP)
 553
 554 # Targets to build symbolic links when needed
 555 symlink.gnu symlink.solaris symlink.svr3 symlink.svr5 symlink.irix \
 556 symlink.aix symlink.reliantunix:
 557         @ $(CALC_VERSIONS); \
 558         SHLIB=lib$(LIBNAME).so; \
 559         $(SYMLINK_SO)
 560 symlink.darwin:
 561         @ $(CALC_VERSIONS); \
 562         SHLIB=lib$(LIBNAME); \
 563         SHLIB_SUFFIX=.dylib; \
 564         $(SYMLINK_SO)
 565 symlink.hpux:
 566         @ $(CALC_VERSIONS); \
 567         SHLIB=lib$(LIBNAME).sl; \
 568         expr $(PLATFORM) : '.*ia64' > /dev/null && SHLIB=lib$(LIBNAME).so; \
 569         $(SYMLINK_SO)
 570 # The following lines means those specific architectures do no symlinks
 571 symlink.cygwin symlink.alpha-osf1 symlink.tru64 symlink.tru64-rpath symlink.beos:
 572
 573 # Compatibility targets
 574 link_o.bsd-gcc-shared link_o.linux-shared link_o.gnu-shared: link_o.gnu
 575 link_a.bsd-gcc-shared link_a.linux-shared link_a.gnu-shared: link_a.gnu
 576 link_app.bsd-gcc-shared link_app.linux-shared link_app.gnu-shared: link_app.gnu
 577 symlink.bsd-gcc-shared symlink.bsd-shared symlink.linux-shared symlink.gnu-shared: symlink.gnu
 578 link_o.bsd-shared: link_o.bsd
 579 link_a.bsd-shared: link_a.bsd
 580 link_app.bsd-shared: link_app.bsd
 581 link_o.darwin-shared: link_o.darwin
 582 link_a.darwin-shared: link_a.darwin
 583 link_app.darwin-shared: link_app.darwin
 584 symlink.darwin-shared: symlink.darwin
 585 link_o.cygwin-shared: link_o.cygwin
 586 link_a.cygwin-shared: link_a.cygwin
 587 link_app.cygwin-shared: link_app.cygwin
 588 symlink.cygwin-shared: symlink.cygwin
 589 link_o.alpha-osf1-shared: link_o.alpha-osf1
 590 link_a.alpha-osf1-shared: link_a.alpha-osf1
 591 link_app.alpha-osf1-shared: link_app.alpha-osf1
 592 symlink.alpha-osf1-shared: symlink.alpha-osf1
 593 link_o.tru64-shared: link_o.tru64
 594 link_a.tru64-shared: link_a.tru64
 595 link_app.tru64-shared: link_app.tru64
 596 symlink.tru64-shared: symlink.tru64
 597 link_o.tru64-shared-rpath: link_o.tru64-rpath
 598 link_a.tru64-shared-rpath: link_a.tru64-rpath
 599 link_app.tru64-shared-rpath: link_app.tru64-rpath
 600 symlink.tru64-shared-rpath: symlink.tru64-rpath
 601 link_o.solaris-shared: link_o.solaris
 602 link_a.solaris-shared: link_a.solaris
 603 link_app.solaris-shared: link_app.solaris
 604 symlink.solaris-shared: symlink.solaris
 605 link_o.svr3-shared: link_o.svr3
 606 link_a.svr3-shared: link_a.svr3
 607 link_app.svr3-shared: link_app.svr3
 608 symlink.svr3-shared: symlink.svr3
 609 link_o.svr5-shared: link_o.svr5
 610 link_a.svr5-shared: link_a.svr5
 611 link_app.svr5-shared: link_app.svr5
 612 symlink.svr5-shared: symlink.svr5
 613 link_o.irix-shared: link_o.irix
 614 link_a.irix-shared: link_a.irix
 615 link_app.irix-shared: link_app.irix
 616 symlink.irix-shared: symlink.irix
 617 link_o.hpux-shared: link_o.hpux
 618 link_a.hpux-shared: link_a.hpux
 619 link_app.hpux-shared: link_app.hpux
 620 symlink.hpux-shared: symlink.hpux
 621 link_o.aix-shared: link_o.aix
 622 link_a.aix-shared: link_a.aix
 623 link_app.aix-shared: link_app.aix
 624 symlink.aix-shared: symlink.aix
 625 link_o.reliantunix-shared: link_o.reliantunix
 626 link_a.reliantunix-shared: link_a.reliantunix
 627 link_app.reliantunix-shared: link_app.reliantunix
 628 symlink.reliantunix-shared: symlink.reliantunix
 629 link_o.beos-shared: link_o.beos
 630 link_a.beos-shared: link_a.beos
 631 link_app.beos-shared: link_app.gnu
 632 symlink.beos-shared: symlink.beos