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 # LIBNAME contains just the name of the library, without prefix ("lib"
  18 # on Unix, "cyg" for certain forms under Cygwin...) or suffix (.a, .so,
  19 # .dll, ...).  This one MUST have a value when using this makefile to
  20 # build shared libraries.
  21 # For example, to build libfoo.so, you need to do the following:
  22 #LIBNAME=foo
  23 LIBNAME=
  24
  25 # APPNAME contains just the name of the application, without suffix (""
  26 # on Unix, ".exe" on Windows, ...).  This one MUST have a value when using
  27 # this makefile to build applications.
  28 # For example, to build foo, you need to do the following:
  29 #APPNAME=foo
  30 APPNAME=
  31
  32 # OBJECTS contains all the object files to link together into the application.
  33 # This must contain at least one object file.
  34 #OBJECTS=foo.o
  35 OBJECTS=
  36
  37 # LIBEXTRAS contains extra modules to link together with the library.
  38 # For example, if a second library, say libbar.a needs to be linked into
  39 # libfoo.so, you need to do the following:
  40 #LIBEXTRAS=libbar.a
  41 # Note that this MUST be used when using the link_o targets, to hold the
  42 # names of all object files that go into the target library.
  43 LIBEXTRAS=
  44
  45 # LIBVERSION contains the current version of the library.
  46 # For example, to build libfoo.so.1.2, you need to do the following:
  47 #LIBVERSION=1.2
  48 LIBVERSION=
  49
  50 # LIBCOMPATVERSIONS contains the compatibility versions (a list) of
  51 # the library.  They MUST be in decreasing order.
  52 # For example, if libfoo.so.1.2.1 is backward compatible with libfoo.so.1.2
  53 # and libfoo.so.1, you need to do the following:
  54 #LIBCOMPATVERSIONS=1.2 1
  55 # Note that on systems that use sonames, the last number will appear as
  56 # part of it.
  57 # It's also possible, for systems that support it (Tru64, for example),
  58 # to add extra compatibility info with more precision, by adding a second
  59 # list of versions, separated from the first with a semicolon, like this:
  60 #LIBCOMPATVERSIONS=1.2 1;1.2.0 1.1.2 1.1.1 1.1.0 1.0.0
  61 LIBCOMPATVERSIONS=
  62
  63 # LIBDEPS contains all the flags necessary to cover all necessary
  64 # dependencies to other libraries.
  65 LIBDEPS=
  66
  67 #------------------------------------------------------------------------------
  68 # The rest is private to this makefile.
  69
  70 SET_X=:
  71 #SET_X=set -x
  72
  73 top:
  74         echo "Trying to use this makefile interactively?  Don't."
  75
  76 CALC_VERSIONS=  \
  77         SHLIB_COMPAT=; SHLIB_SOVER=; \
  78         if [ -n "$(LIBVERSION)$(LIBCOMPATVERSIONS)" ]; then \
  79                 prev=""; \
  80                 for v in `echo "$(LIBVERSION) $(LIBCOMPATVERSIONS)" | cut -d';' -f1`; do \
  81                         SHLIB_SOVER_NODOT=$$v; \
  82                         SHLIB_SOVER=.$$v; \
  83                         if [ -n "$$prev" ]; then \
  84                                 SHLIB_COMPAT="$$SHLIB_COMPAT .$$prev"; \
  85                         fi; \
  86                         prev=$$v; \
  87                 done; \
  88         fi
  89
  90 LINK_APP=       \
  91   ( $(SET_X);   \
  92     LIBDEPS="$${LIBDEPS:-$(LIBDEPS)}"; \
  93     LDCMD="$${LDCMD:-$(CC)}"; LDFLAGS="$${LDFLAGS:-$(CFLAGS)}"; \
  94     LIBPATH=`for x in $$LIBDEPS; do if echo $$x | grep '^ *-L' > /dev/null 2>&1; then echo $$x | sed -e 's/^ *-L//'; fi; done | uniq`; \
  95     LIBPATH=`echo $$LIBPATH | sed -e 's/ /:/g'`; \
  96     LD_LIBRARY_PATH=$$LIBPATH:$$LD_LIBRARY_PATH \
  97     $${LDCMD} $${LDFLAGS} -o $${APPNAME:=$(APPNAME)} $(OBJECTS) $${LIBDEPS} )
  98
  99 LINK_SO=        \
 100   ( $(SET_X);   \
 101     LIBDEPS="$${LIBDEPS:-$(LIBDEPS)}"; \
 102     SHAREDCMD="$${SHAREDCMD:-$(CC)}"; \
 103     SHAREDFLAGS="$${SHAREDFLAGS:-$(CFLAGS) $(SHARED_LDFLAGS)}"; \
 104     nm -Pg $$SHOBJECTS | grep ' [BDT] ' | cut -f1 -d' ' > lib$(LIBNAME).exp; \
 105     LIBPATH=`for x in $$LIBDEPS; do if echo $$x | grep '^ *-L' > /dev/null 2>&1; then echo $$x | sed -e 's/^ *-L//'; fi; done | uniq`; \
 106     LIBPATH=`echo $$LIBPATH | sed -e 's/ /:/g'`; \
 107     LD_LIBRARY_PATH=$$LIBPATH:$$LD_LIBRARY_PATH \
 108     $${SHAREDCMD} $${SHAREDFLAGS} \
 109         -o $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX \
 110         $$ALLSYMSFLAGS $$SHOBJECTS $$NOALLSYMSFLAGS $$LIBDEPS \
 111   ) && $(SYMLINK_SO); \
 112   ( $(SET_X); rm -f lib$(LIBNAME).exp )
 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         expr $(PLATFORM) : 'mingw' > /dev/null && SHLIB=$(LIBNAME)eay32; \
 251         SHLIB_SUFFIX=.dll; \
 252         LIBVERSION="$(LIBVERSION)"; \
 253         SHLIB_SOVER=${LIBVERSION:+"-$(LIBVERSION)"}; \
 254         ALLSYMSFLAGS='-Wl,--whole-archive'; \
 255         NOALLSYMSFLAGS='-Wl,--no-whole-archive'; \
 256         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -Wl,-Bsymbolic -Wl,--out-implib,lib$(LIBNAME).dll.a"; \
 257         $(LINK_SO_O)
 258 link_a.cygwin:
 259         @ $(CALC_VERSIONS); \
 260         INHIBIT_SYMLINKS=yes; \
 261         SHLIB=cyg$(LIBNAME); \
 262         expr $(PLATFORM) : 'mingw' > /dev/null && SHLIB=$(LIBNAME)eay32; \
 263         SHLIB_SUFFIX=.dll; \
 264         SHLIB_SOVER=-$(LIBVERSION); \
 265         ALLSYMSFLAGS='-Wl,--whole-archive'; \
 266         NOALLSYMSFLAGS='-Wl,--no-whole-archive'; \
 267         base=;  [ $(LIBNAME) = "crypto" ] && base=-Wl,--image-base,0x63000000; \
 268         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared $$base -Wl,-Bsymbolic -Wl,--out-implib,lib$(LIBNAME).dll.a"; \
 269         [ -f apps/$$SHLIB$$SHLIB_SUFFIX ] && rm apps/$$SHLIB$$SHLIB_SUFFIX; \
 270         [ -f test/$$SHLIB$$SHLIB_SUFFIX ] && rm test/$$SHLIB$$SHLIB_SUFFIX; \
 271         $(LINK_SO_A) || exit 1; \
 272         cp -p $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX apps/; \
 273         cp -p $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX test/
 274 link_app.cygwin:
 275         $(LINK_APP)
 276
 277 link_o.alpha-osf1:
 278         @ if ${DETECT_GNU_LD}; then \
 279                 $(DO_GNU_SO); \
 280         else \
 281                 SHLIB=lib$(LIBNAME).so; \
 282                 SHLIB_SUFFIX=; \
 283                 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
 284                 if [ -n "$$SHLIB_HIST" ]; then \
 285                         SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
 286                 else \
 287                         SHLIB_HIST="$(LIBVERSION)"; \
 288                 fi; \
 289                 SHLIB_SOVER=; \
 290                 ALLSYMSFLAGS='-all'; \
 291                 NOALLSYMSFLAGS='-none'; \
 292                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared"; \
 293                 if [ -n "$$SHLIB_HIST" ]; then \
 294                         SHAREDFLAGS="$$SHAREDFLAGS -set_version $$SHLIB_HIST"; \
 295                 fi; \
 296         fi; \
 297         $(LINK_SO_O)
 298 link_a.alpha-osf1:
 299         @ if ${DETECT_GNU_LD}; then \
 300                 $(DO_GNU_SO); \
 301         else \
 302                 SHLIB=lib$(LIBNAME).so; \
 303                 SHLIB_SUFFIX=; \
 304                 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
 305                 if [ -n "$$SHLIB_HIST" ]; then \
 306                         SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
 307                 else \
 308                         SHLIB_HIST="$(LIBVERSION)"; \
 309                 fi; \
 310                 SHLIB_SOVER=; \
 311                 ALLSYMSFLAGS='-all'; \
 312                 NOALLSYMSFLAGS='-none'; \
 313                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared"; \
 314                 if [ -n "$$SHLIB_HIST" ]; then \
 315                         SHAREDFLAGS="$$SHAREDFLAGS -set_version $$SHLIB_HIST"; \
 316                 fi; \
 317         fi; \
 318         $(LINK_SO_A)
 319 link_app.alpha-osf1:
 320         @if ${DETECT_GNU_LD}; then \
 321                 $(DO_GNU_APP); \
 322         else \
 323                 LDFLAGS="$(CFLAGS) -rpath $(LIBRPATH)"; \
 324         fi; \
 325         $(LINK_APP)
 326
 327 link_o.solaris:
 328         @ if ${DETECT_GNU_LD}; then \
 329                 $(DO_GNU_SO); \
 330         else \
 331                 $(CALC_VERSIONS); \
 332                 MINUSZ='-z '; \
 333                 ($(CC) -v 2>&1 | grep gcc) > /dev/null && MINUSZ='-Wl,-z,'; \
 334                 SHLIB=lib$(LIBNAME).so; \
 335                 SHLIB_SUFFIX=; \
 336                 ALLSYMSFLAGS="$${MINUSZ}allextract"; \
 337                 NOALLSYMSFLAGS="$${MINUSZ}defaultextract"; \
 338                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX -Wl,-Bsymbolic"; \
 339         fi; \
 340         $(LINK_SO_O)
 341 link_a.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$$SHLIB_SUFFIX -Wl,-Bsymbolic"; \
 353         fi; \
 354         $(LINK_SO_A)
 355 link_app.solaris:
 356         @ if ${DETECT_GNU_LD}; then \
 357                 $(DO_GNU_APP); \
 358         else \
 359                 LDFLAGS="$(CFLAGS) -R $(LIBRPATH)"; \
 360         fi; \
 361         $(LINK_APP)
 362
 363 # OpenServer 5 native compilers used
 364 link_o.svr3:
 365         @ if ${DETECT_GNU_LD}; then \
 366                 $(DO_GNU_SO); \
 367         else \
 368                 $(CALC_VERSIONS); \
 369                 SHLIB=lib$(LIBNAME).so; \
 370                 SHLIB_SUFFIX=; \
 371                 ALLSYMSFLAGS=''; \
 372                 NOALLSYMSFLAGS=''; \
 373                 SHAREDFLAGS="$(CFLAGS) -G -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 374         fi; \
 375         $(LINK_SO_O)
 376 link_a.svr3:
 377         @ if ${DETECT_GNU_LD}; then \
 378                 $(DO_GNU_SO); \
 379         else \
 380                 $(CALC_VERSIONS); \
 381                 SHLIB=lib$(LIBNAME).so; \
 382                 SHLIB_SUFFIX=; \
 383                 ALLSYMSFLAGS=''; \
 384                 NOALLSYMSFLAGS=''; \
 385                 SHAREDFLAGS="$(CFLAGS) -G -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 386         fi; \
 387         $(LINK_SO_A_UNPACKED)
 388 link_app.svr3:
 389         @${DETECT_GNU_LD} && $(DO_GNU_APP); \
 390         $(LINK_APP)
 391
 392 # UnixWare 7 and OpenUNIX 8 native compilers used
 393 link_o.svr5:
 394         @ if ${DETECT_GNU_LD}; then \
 395                 $(DO_GNU_SO); \
 396         else \
 397                 $(CALC_VERSIONS); \
 398                 SHARE_FLAG='-G'; \
 399                 ($(CC) -v 2>&1 | grep gcc) > /dev/null && SHARE_FLAG='-shared'; \
 400                 SHLIB=lib$(LIBNAME).so; \
 401                 SHLIB_SUFFIX=; \
 402                 ALLSYMSFLAGS=''; \
 403                 NOALLSYMSFLAGS=''; \
 404                 SHAREDFLAGS="$(CFLAGS) $${SHARE_FLAG} -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 405         fi; \
 406         $(LINK_SO_O)
 407 link_a.svr5:
 408         @ if ${DETECT_GNU_LD}; then \
 409                 $(DO_GNU_SO); \
 410         else \
 411                 $(CALC_VERSIONS); \
 412                 SHARE_FLAG='-G'; \
 413                 (${CC} -v 2>&1 | grep gcc) > /dev/null && SHARE_FLAG='-shared'; \
 414                 SHLIB=lib$(LIBNAME).so; \
 415                 SHLIB_SUFFIX=; \
 416                 ALLSYMSFLAGS=''; \
 417                 NOALLSYMSFLAGS=''; \
 418                 SHAREDFLAGS="$(CFLAGS) $${SHARE_FLAG} -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 419         fi; \
 420         $(LINK_SO_A_UNPACKED)
 421 link_app.svr5:
 422         @${DETECT_GNU_LD} && $(DO_GNU_APP); \
 423         $(LINK_APP)
 424
 425 link_o.irix:
 426         @ if ${DETECT_GNU_LD}; then \
 427                 $(DO_GNU_SO); \
 428         else \
 429                 $(CALC_VERSIONS); \
 430                 SHLIB=lib$(LIBNAME).so; \
 431                 SHLIB_SUFFIX=; \
 432                 MINUSWL=""; \
 433                 ($(CC) -v 2>&1 | grep gcc) > /dev/null && MINUSWL="-Wl,"; \
 434                 ALLSYMSFLAGS="$${MINUSWL}-all"; \
 435                 NOALLSYMSFLAGS="$${MINUSWL}-none"; \
 436                 SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -shared -Wl,-soname,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 437         fi; \
 438         $(LINK_SO_O)
 439 link_a.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$$SHLIB_SUFFIX"; \
 451         fi; \
 452         $(LINK_SO_A)
 453 link_app.irix:
 454         @LDFLAGS="$(CFLAGS) -Wl,-rpath,$(LIBRPATH)"; \
 455         $(LINK_APP)
 456
 457 # 32-bit PA-RISC HP-UX embeds the -L pathname of libs we link with, so
 458 # we compensate for it with +cdp ../: and +cdp ./:. Yes, these rewrite
 459 # rules imply that we can only link one level down in catalog structure,
 460 # but that's what takes place for the moment of this writing. +cdp option
 461 # was introduced in HP-UX 11.x and applies in 32-bit PA-RISC link
 462 # editor context only [it's simply ignored in other cases, which are all
 463 # ELFs by the way].
 464 #
 465 link_o.hpux:
 466         @if ${DETECT_GNU_LD}; then $(DO_GNU_SO); else \
 467         $(CALC_VERSIONS); \
 468         SHLIB=lib$(LIBNAME).sl; \
 469         expr "$(CFLAGS)" : '.*DSO_DLFCN' > /dev/null && SHLIB=lib$(LIBNAME).so; \
 470         SHLIB_SUFFIX=; \
 471         ALLSYMSFLAGS='-Wl,-Fl'; \
 472         NOALLSYMSFLAGS=''; \
 473         expr $(PLATFORM) : 'hpux64' > /dev/null && ALLSYMSFLAGS='-Wl,+forceload'; \
 474         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -Wl,-B,symbolic,+vnocompatwarnings,-z,+s,+h,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 475         fi; \
 476         rm -f $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX || :; \
 477         $(LINK_SO_O) && chmod a=rx $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX
 478 link_a.hpux:
 479         @if ${DETECT_GNU_LD}; then $(DO_GNU_SO); else \
 480         $(CALC_VERSIONS); \
 481         SHLIB=lib$(LIBNAME).sl; \
 482         expr $(PLATFORM) : '.*ia64' > /dev/null && SHLIB=lib$(LIBNAME).so; \
 483         SHLIB_SUFFIX=; \
 484         ALLSYMSFLAGS='-Wl,-Fl'; \
 485         NOALLSYMSFLAGS=''; \
 486         expr $(PLATFORM) : 'hpux64' > /dev/null && ALLSYMSFLAGS='-Wl,+forceload'; \
 487         SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS) -Wl,-B,symbolic,+vnocompatwarnings,-z,+s,+h,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX"; \
 488         fi; \
 489         rm -f $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX || :; \
 490         $(LINK_SO_A) && chmod a=rx $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX
 491 link_app.hpux:
 492         @if ${DETECT_GNU_LD}; then $(DO_GNU_APP); else \
 493         LDFLAGS="$(CFLAGS) -Wl,+s,+cdp,../:,+cdp,./:,+b,$(LIBRPATH)"; \
 494         fi; \
 495         $(LINK_APP)
 496
 497 link_o.aix:
 498         @ $(CALC_VERSIONS); \
 499         OBJECT_MODE=`expr x$(SHARED_LDFLAGS) : 'x\-[a-z]\([0-9]*\)'`; \
 500         OBJECT_MODE=$${OBJECT_MODE:-32}; export OBJECT_MODE; \
 501         SHLIB=lib$(LIBNAME).so; \
 502         SHLIB_SUFFIX=; \
 503         ALLSYMSFLAGS='-bnogc'; \
 504         NOALLSYMSFLAGS=''; \
 505         SHAREDFLAGS='$(CFLAGS) $(SHARED_LDFLAGS) -G -bE:lib$(LIBNAME).exp -bM:SRE'; \
 506         $(LINK_SO_O); rm -rf lib$(LIBNAME).exp
 507 link_a.aix:
 508         @ $(CALC_VERSIONS); \
 509         OBJECT_MODE=`expr x$(SHARED_LDFLAGS) : 'x\-[a-z]\([0-9]*\)'`; \
 510         OBJECT_MODE=$${OBJECT_MODE:-32}; export OBJECT_MODE; \
 511         SHLIB=lib$(LIBNAME).so; \
 512         SHLIB_SUFFIX=; \
 513         ALLSYMSFLAGS='-bnogc'; \
 514         NOALLSYMSFLAGS=''; \
 515         SHAREDFLAGS='$(CFLAGS) $(SHARED_LDFLAGS) -G -bE:lib$(LIBNAME).exp -bM:SRE'; \
 516         $(LINK_SO_A_VIA_O)
 517 link_app.aix:
 518         LDFLAGS="$(CFLAGS) -blibpath:$(LIBRPATH):$${LIBPATH:-/usr/lib:/lib}"; \
 519         $(LINK_APP)
 520
 521 link_o.reliantunix:
 522         @ $(CALC_VERSIONS); \
 523         SHLIB=lib$(LIBNAME).so; \
 524         SHLIB_SUFFIX=; \
 525         ALLSYMSFLAGS=; \
 526         NOALLSYMSFLAGS=''; \
 527         SHAREDFLAGS='$(CFLAGS) -G'; \
 528         $(LINK_SO_O)
 529 link_a.reliantunix:
 530         @ $(CALC_VERSIONS); \
 531         SHLIB=lib$(LIBNAME).so; \
 532         SHLIB_SUFFIX=; \
 533         ALLSYMSFLAGS=; \
 534         NOALLSYMSFLAGS=''; \
 535         SHAREDFLAGS='$(CFLAGS) -G'; \
 536         $(LINK_SO_A_UNPACKED)
 537 link_app.reliantunix:
 538         $(LINK_APP)
 539
 540 # Targets to build symbolic links when needed
 541 symlink.gnu symlink.solaris symlink.svr3 symlink.svr5 symlink.irix \
 542 symlink.aix symlink.reliantunix:
 543         @ $(CALC_VERSIONS); \
 544         SHLIB=lib$(LIBNAME).so; \
 545         $(SYMLINK_SO)
 546 symlink.darwin:
 547         @ $(CALC_VERSIONS); \
 548         SHLIB=lib$(LIBNAME); \
 549         SHLIB_SUFFIX=.dylib; \
 550         $(SYMLINK_SO)
 551 symlink.hpux:
 552         @ $(CALC_VERSIONS); \
 553         SHLIB=lib$(LIBNAME).sl; \
 554         expr $(PLATFORM) : '.*ia64' > /dev/null && SHLIB=lib$(LIBNAME).so; \
 555         $(SYMLINK_SO)
 556 # The following lines means those specific architectures do no symlinks
 557 symlink.cygwin symlink.alpha-osf1 symlink.tru64 symlink.tru64-rpath symlink.beos:
 558
 559 # Compatibility targets
 560 link_o.bsd-gcc-shared link_o.linux-shared link_o.gnu-shared: link_o.gnu
 561 link_a.bsd-gcc-shared link_a.linux-shared link_a.gnu-shared: link_a.gnu
 562 link_app.bsd-gcc-shared link_app.linux-shared link_app.gnu-shared: link_app.gnu
 563 symlink.bsd-gcc-shared symlink.bsd-shared symlink.linux-shared symlink.gnu-shared: symlink.gnu
 564 link_o.bsd-shared: link_o.bsd
 565 link_a.bsd-shared: link_a.bsd
 566 link_app.bsd-shared: link_app.bsd
 567 link_o.darwin-shared: link_o.darwin
 568 link_a.darwin-shared: link_a.darwin
 569 link_app.darwin-shared: link_app.darwin
 570 symlink.darwin-shared: symlink.darwin
 571 link_o.cygwin-shared: link_o.cygwin
 572 link_a.cygwin-shared: link_a.cygwin
 573 link_app.cygwin-shared: link_app.cygwin
 574 symlink.cygwin-shared: symlink.cygwin
 575 link_o.alpha-osf1-shared: link_o.alpha-osf1
 576 link_a.alpha-osf1-shared: link_a.alpha-osf1
 577 link_app.alpha-osf1-shared: link_app.alpha-osf1
 578 symlink.alpha-osf1-shared: symlink.alpha-osf1
 579 link_o.tru64-shared: link_o.tru64
 580 link_a.tru64-shared: link_a.tru64
 581 link_app.tru64-shared: link_app.tru64
 582 symlink.tru64-shared: symlink.tru64
 583 link_o.tru64-shared-rpath: link_o.tru64-rpath
 584 link_a.tru64-shared-rpath: link_a.tru64-rpath
 585 link_app.tru64-shared-rpath: link_app.tru64-rpath
 586 symlink.tru64-shared-rpath: symlink.tru64-rpath
 587 link_o.solaris-shared: link_o.solaris
 588 link_a.solaris-shared: link_a.solaris
 589 link_app.solaris-shared: link_app.solaris
 590 symlink.solaris-shared: symlink.solaris
 591 link_o.svr3-shared: link_o.svr3
 592 link_a.svr3-shared: link_a.svr3
 593 link_app.svr3-shared: link_app.svr3
 594 symlink.svr3-shared: symlink.svr3
 595 link_o.svr5-shared: link_o.svr5
 596 link_a.svr5-shared: link_a.svr5
 597 link_app.svr5-shared: link_app.svr5
 598 symlink.svr5-shared: symlink.svr5
 599 link_o.irix-shared: link_o.irix
 600 link_a.irix-shared: link_a.irix
 601 link_app.irix-shared: link_app.irix
 602 symlink.irix-shared: symlink.irix
 603 link_o.hpux-shared: link_o.hpux
 604 link_a.hpux-shared: link_a.hpux
 605 link_app.hpux-shared: link_app.hpux
 606 symlink.hpux-shared: symlink.hpux
 607 link_o.aix-shared: link_o.aix
 608 link_a.aix-shared: link_a.aix
 609 link_app.aix-shared: link_app.aix
 610 symlink.aix-shared: symlink.aix
 611 link_o.reliantunix-shared: link_o.reliantunix
 612 link_a.reliantunix-shared: link_a.reliantunix
 613 link_app.reliantunix-shared: link_app.reliantunix
 614 symlink.reliantunix-shared: symlink.reliantunix
 615 link_o.beos-shared: link_o.beos
 616 link_a.beos-shared: link_a.beos
 617 link_app.beos-shared: link_app.gnu
 618 symlink.beos-shared: symlink.beos