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