2 # Helper makefile to link shared libraries in a portable way.
3 # This is much simpler than libtool, and hopefully not too error-prone.
5 # The following variables need to be set on the command line to build
8 # CC contains the current compiler. This one MUST be defined
10 # LDFLAGS contains flags to be used when the temporary object file is
11 # created. SHARED_LDFLAGS contains flags to be used when the shared
16 # LIBNAME contains just the name of thhe library, without prefix ("lib"
17 # on Unix, "cyg" for certain forms under Cygwin...) or suffix (.a, .so,
18 # .dll, ...). This one MUST have a value when using this makefile.
19 # For example, to build libfoo.so, you need to do the following:
23 # LIBEXTRAS contains extra modules to link together with the library.
24 # For example, if a seond library, say libbar.a needs to be linked into
25 # libfoo.so, you need to do the following:
27 # Note that this MUST be used when using the link_o targets, to hold the
28 # names of all object files that go into the target library.
31 # LIBVERSION contains the current version of the library.
32 # For example, to build libfoo.so.1.2, you need to do the following:
36 # LIBCOMPATVERSIONS contains the compatibility versions (a list) of
37 # the library. They MUST be in decreasing order.
38 # For example, if libfoo.so.1.2.1 is backward compatible with libfoo.so.1.2
39 # and libfoo.so.1, you need to do the following:
40 #LIBCOMPATVERSIONS=1.2 1
41 # Note that on systems that use sonames, the last number will appear as
43 # It's also possible, for systems that support it (Tru64, for example),
44 # to add extra compatibility info with more precision, by adding a second
45 # list of versions, separated from the first with a semicolon, like this:
46 #LIBCOMPATVERSIONS=1.2 1;1.2.0 1.1.2 1.1.1 1.1.0 1.0.0
49 # LIBDEPS contains all the flags necessary to cover all necessary
50 # dependencies to other libraries.
53 #------------------------------------------------------------------------------
54 # The rest is private to this makefile.
60 echo "Trying to use this makefile interactively? Don't."
63 SHLIB_COMPAT=; SHLIB_SOVER=; \
64 if [ -n "$(LIBVERSION)$(LIBCOMPATVERSIONS)" ]; then \
66 for v in `echo "$(LIBVERSION) $(LIBCOMPATVERSIONS)" | cut -d';' -f1`; do \
67 SHLIB_SOVER_NODOT=$$v \
69 if [ -n "$$prev" ]; then \
70 SHLIB_COMPAT="$$SHLIB_COMPAT .$$prev"; \
78 nm -Pg $$SHOBJECTS | grep ' [BDT] ' | cut -f1 -d' ' > lib$(LIBNAME).exp; \
79 $$SHAREDCMD $(SHARED_LDFLAGS) $$SHAREDFLAGS -o $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX \
80 $$ALLSYMSFLAGS $$SHOBJECTS $$NOALLSYMSFLAGS $$LIBDEPS ) && \
81 $(SYMLINK_SO); ( $(DEBUG); rm -f lib$(LIBNAME).exp )
83 prev=$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX; \
84 if [ -n "$$SHLIB_COMPAT" ]; then \
85 for x in $$SHLIB_COMPAT; do \
86 ( $(DEBUG); rm -f $$SHLIB$$x$$SHLIB_SUFFIX; \
87 ln -s $$prev $$SHLIB$$x$$SHLIB_SUFFIX ); \
88 prev=$$SHLIB$$x$$SHLIB_SUFFIX; \
91 if [ -n "$$SHLIB_SOVER" ]; then \
92 ( $(DEBUG); rm -f $$SHLIB$$SHLIB_SUFFIX; \
93 ln -s $$prev $$SHLIB$$SHLIB_SUFFIX ); \
96 LINK_SO_A= SHOBJECTS="lib$(LIBNAME).a $(LIBEXTRAS)"; $(LINK_SO)
97 LINK_SO_O= SHOBJECTS="$(LIBEXTRAS)"; $(LINK_SO)
99 SHOBJECTS=lib$(LIBNAME).o ALL=$$ALLSYMSFLAGS ALLSYMSFLAGS= NOALLSYMSFLAGS=; \
101 ld $(LDFLAGS) -r -o lib$(LIBNAME).o $$ALL lib$(LIBNAME).a $(LIBEXTRAS) ); \
102 $(LINK_SO) && rm -f $(LIBNAME).o
103 LINK_SO_A_UNPACKED= \
104 UNPACKDIR=link_tmp.$$$$; rm -rf $$UNPACKDIR; mkdir $$UNPACKDIR; \
105 (cd $$UNPACKDIR; ar x ../lib$(LIBNAME).a) && cp $(LIBEXTRAS) $$UNPACKDIR && \
106 SHOBJECTS=$$UNPACKDIR/*.o; \
107 $(LINK_SO) && rm -rf $$UNPACKDIR
109 DETECT_GNU_LD=${CC} -v 2>&1 | grep '^gcc' >/dev/null 2>&1 && \
110 my_ld=`gcc -print-prog-name=ld 2>&1` && \
111 [ -n "$$my_ld" ] && \
112 $$my_ld -v 2>&1 | grep 'GNU ld' >/dev/null 2>&1
113 DO_GNU=$(CALC_VERSIONS); \
114 SHLIB=lib$(LIBNAME).so \
116 LIBDEPS="$(LIBDEPS) -lc" \
117 ALLSYMSFLAGS='-Wl,--whole-archive' \
118 NOALLSYMSFLAGS='-Wl,--no-whole-archive' \
119 SHAREDFLAGS="-shared -Wl,-Bsymbolic -Wl,-soname=$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX" \
123 @ $(DO_GNU); $(LINK_SO_O)
125 @ $(DO_GNU); $(LINK_SO_A)
127 # For Darwin AKA Mac OS/X (dyld)
129 @ $(CALC_VERSIONS); \
130 SHLIB=lib$(LIBNAME) \
131 SHLIB_SUFFIX=.dylib \
132 LIBDEPS="$(LIBDEPS) -lc" \
133 ALLSYMSFLAGS='-all_load' \
135 SHAREDFLAGS="-dynamiclib" \
137 if [ -n "$(LIBVERSION)" ]; then \
138 SHAREDFLAGS="$SHAREDFLAGS -current_version $(LIBVERSION)"; \
140 if [ -n "$$SHLIB_SOVER_NODOT" ]; then \
141 SHAREDFLAGS="$SHAREDFLAGS -compatibility_version $$SHLIB_SOVER_NODOT"; \
145 @ $(CALC_VERSIONS); \
146 SHLIB=lib$(LIBNAME) \
147 SHLIB_SUFFIX=.dylib \
148 LIBDEPS="$(LIBDEPS) -lc" \
149 ALLSYMSFLAGS='-all_load' \
151 SHAREDFLAGS="-dynamiclib" \
153 if [ -n "$(LIBVERSION)" ]; then \
154 SHAREDFLAGS="$SHAREDFLAGS -current_version $(LIBVERSION)"; \
156 if [ -n "$$SHLIB_SOVER_NODOT" ]; then \
157 SHAREDFLAGS="$SHAREDFLAGS -compatibility_version $$SHLIB_SOVER_NODOT"; \
162 @ SHLIB=cyg$(LIBNAME).dll \
164 LIBDEPS="$(LIBDEPS) -lc" \
166 ALLSYMSFLAGS='-Wl,--whole-archive' \
167 NOALLSYMSFLAGS='-Wl,--no-whole-archive' \
168 SHAREDFLAGS="-shared -Wl,-Bsymbolic -Wl,--out-implib,lib$(LIBNAME).dll.a" \
172 @ SHLIB=cyg$(LIBNAME).dll \
174 LIBDEPS="$(LIBDEPS) -lc" \
176 ALLSYMSFLAGS='-Wl,--whole-archive' \
177 NOALLSYMSFLAGS='-Wl,--no-whole-archive' \
178 SHAREDFLAGS="-shared -Wl,-Bsymbolic -Wl,--out-implib,lib$(LIBNAME).dll.a" \
183 @ if ${DETECT_GNU_LD}; then \
186 SHLIB=lib$(LIBNAME).so \
188 LIBDEPS="$(LIBDEPS) -lc" \
189 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
190 if [ -n "$$SHLIB_HIST" ]; then \
191 SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
193 SHLIB_HIST="$(LIBVERSION)"; \
196 ALLSYMSFLAGS='-all' \
197 NOALLSYMSFLAGS='-none' \
198 SHAREDFLAGS="-shared" \
200 if [ -n "$$SHLIB_HIST" ]; then \
201 SHAREDFLAGS="$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
206 @ if ${DETECT_GNU_LD}; then \
209 SHLIB=lib$(LIBNAME).so \
211 LIBDEPS="$(LIBDEPS) -lc" \
212 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
213 if [ -n "$$SHLIB_HIST" ]; then \
214 SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
216 SHLIB_HIST="$(LIBVERSION)"; \
219 ALLSYMSFLAGS='-all' \
220 NOALLSYMSFLAGS='-none' \
221 SHAREDFLAGS="-shared" \
223 if [ -n "$$SHLIB_HIST" ]; then \
224 SHAREDFLAGS="$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
229 # The difference between alpha-osf1-shared and tru64-shared is the `-msym'
230 # option passed to the linker.
232 @ if ${DETECT_GNU_LD}; then \
235 SHLIB=lib$(LIBNAME).so \
237 LIBDEPS="$(LIBDEPS) -lc" \
238 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
239 if [ -n "$$SHLIB_HIST" ]; then \
240 SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
242 SHLIB_HIST="$(LIBVERSION)"; \
245 ALLSYMSFLAGS='-all' \
246 NOALLSYMSFLAGS='-none' \
247 SHAREDFLAGS="-shared -msym" \
249 if [ -n "$$SHLIB_HIST" ]; then \
250 SHAREDFLAGS="$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
255 @ if ${DETECT_GNU_LD}; then \
258 SHLIB=lib$(LIBNAME).so \
260 LIBDEPS="$(LIBDEPS) -lc" \
261 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
262 if [ -n "$$SHLIB_HIST" ]; then \
263 SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
265 SHLIB_HIST="$(LIBVERSION)"; \
268 ALLSYMSFLAGS='-all' \
269 NOALLSYMSFLAGS='-none' \
270 SHAREDFLAGS="-shared -msym" \
272 if [ -n "$$SHLIB_HIST" ]; then \
273 SHAREDFLAGS="$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
278 # The difference between tru64-shared and tru64-shared-rpath is the
279 # -rpath ${LIBRPATH} passed to the linker.
281 @ if ${DETECT_GNU_LD}; then \
284 SHLIB=lib$(LIBNAME).so \
286 LIBDEPS="$(LIBDEPS) -lc" \
287 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
288 if [ -n "$$SHLIB_HIST" ]; then \
289 SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
291 SHLIB_HIST="$(LIBVERSION)"; \
294 ALLSYMSFLAGS='-all' \
295 NOALLSYMSFLAGS='-none' \
296 SHAREDFLAGS="-shared -msym -rpath $(LIBRPATH)" \
298 if [ -n "$$SHLIB_HIST" ]; then \
299 SHAREDFLAGS="$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
304 @ if ${DETECT_GNU_LD}; then \
307 SHLIB=lib$(LIBNAME).so \
309 LIBDEPS="$(LIBDEPS) -lc" \
310 SHLIB_HIST=`echo "$(LIBCOMPATVERSIONS)" | cut -d';' -f2 | sed -e 's/ */:/'`; \
311 if [ -n "$$SHLIB_HIST" ]; then \
312 SHLIB_HIST="$${SHLIB_HIST}:$(LIBVERSION)"; \
314 SHLIB_HIST="$(LIBVERSION)"; \
317 ALLSYMSFLAGS='-all' \
318 NOALLSYMSFLAGS='-none' \
319 SHAREDFLAGS="-shared -msym -rpath $(LIBRPATH)" \
321 if [ -n "$$SHLIB_HIST" ]; then \
322 SHAREDFLAGS="$SHAREDFLAGS -set_version \"$$SHLIB_HIST\""; \
328 @ if ${DETECT_GNU_LD}; then \
332 SHLIB=lib$(LIBNAME).so \
334 LIBDEPS="$(LIBDEPS) -lc" \
335 ALLSYMSFLAGS='-z allextract' \
337 SHAREDFLAGS='-G -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX' \
342 @ if ${DETECT_GNU_LD}; then \
346 SHLIB=lib$(LIBNAME).so \
348 LIBDEPS="$(LIBDEPS) -lc" \
349 ALLSYMSFLAGS='-z allextract' \
351 SHAREDFLAGS='-G -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX' \
356 # OpenServer 5 native compilers used
357 # UnixWare 7 and OpenUNIX 8 native compilers used
359 @ if ${DETECT_GNU_LD}; then \
363 SHLIB=lib$(LIBNAME).so \
365 LIBDEPS="$(LIBDEPS) -lc" \
366 ALLSYMSFLAGS='-z allextract' \
368 SHAREDFLAGS='-G -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX' \
373 @ if ${DETECT_GNU_LD}; then \
377 SHLIB=lib$(LIBNAME).so \
379 LIBDEPS="$(LIBDEPS) -lc" \
380 ALLSYMSFLAGS='-z allextract' \
382 SHAREDFLAGS='-G -h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX' \
385 $(LINK_SO_A_UNPACKED)
388 @ if ${DETECT_GNU_LD}; then \
392 SHLIB=lib$(LIBNAME).so \
394 LIBDEPS="$(LIBDEPS) -lc" \
395 ALLSYMSFLAGS='-all' \
397 SHAREDFLAGS='-shared -Wl,-soname,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX' \
402 @ if ${DETECT_GNU_LD}; then \
406 SHLIB=lib$(LIBNAME).so \
408 LIBDEPS="$(LIBDEPS) -lc" \
409 ALLSYMSFLAGS='-all' \
411 SHAREDFLAGS='-shared -Wl,-soname,$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX' \
416 # HP-UX includes the full pathname of libs we depend on, so we would get
417 # ./libcrypto (with ./ as path information) compiled into libssl, hence
418 # we omit the SHLIBDEPS. Applications must be linked with -lssl -lcrypto
420 # The object modules are loaded from lib$i.a using the undocumented -Fl
423 # WARNING: Until DSO is fixed to support a search path, we support SHLIB_PATH
424 # by temporarily specifying "+s"!
427 @ $(CALC_VERSIONS); \
428 SHLIB=lib$(LIBNAME).sl \
430 LIBDEPS="$(LIBDEPS) -lc" \
433 SHAREDFLAGS='+vnocompatwarnings -b -z +s +h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX' \
434 SHAREDCMD='/usr/ccs/bin/ld'; \
435 $(LINK_SO_O) && chmod a=rx $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX
437 @ $(CALC_VERSIONS); \
438 SHLIB=lib$(LIBNAME).sl \
440 LIBDEPS="$(LIBDEPS) -lc" \
443 SHAREDFLAGS='+vnocompatwarnings -b -z +s +h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX' \
444 SHAREDCMD='/usr/ccs/bin/ld'; \
445 $(LINK_SO_A) && chmod a=rx $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX
447 # HP-UX includes the full pathname of libs we depend on, so we would get
448 # ./libcrypto (with ./ as path information) compiled into libssl, hence
449 # we omit the SHLIBDEPS. Applications must be linked with -lssl -lcrypto
452 # HP-UX in 64bit mode has "+s" enabled by default; it will search for
453 # shared libraries along LD_LIBRARY_PATH _and_ SHLIB_PATH.
456 @ $(CALC_VERSIONS); \
457 SHLIB=lib$(LIBNAME).sl \
459 LIBDEPS="$(LIBDEPS) -lc" \
460 ALLSYMSFLAGS='+forceload' \
462 SHAREDFLAGS='-b -z +h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX' \
463 SHAREDCMD='/usr/ccs/bin/ld'; \
464 $(LINK_SO_O) && chmod a=rx $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX
466 @ $(CALC_VERSIONS); \
467 SHLIB=lib$(LIBNAME).sl \
469 LIBDEPS="$(LIBDEPS) -lc" \
470 ALLSYMSFLAGS='+forceload' \
472 SHAREDFLAGS='-b -z +h $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX' \
473 SHAREDCMD='/usr/ccs/bin/ld'; \
474 $(LINK_SO_A) && chmod a=rx $$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX
477 @ $(CALC_VERSIONS); \
478 SHLIB=lib$(LIBNAME).so \
480 LIBDEPS="$(LIBDEPS) -lc" \
481 ALLSYMSFLAGS='-bnogc' \
483 SHAREDFLAGS='-G -bE:lib$(LIBNAME).exp -bM:SRE' \
487 @ $(CALC_VERSIONS); \
488 SHLIB=lib$(LIBNAME).so \
490 LIBDEPS="$(LIBDEPS) -lc" \
491 ALLSYMSFLAGS='-bnogc' \
493 SHAREDFLAGS='-G -bE:lib$(LIBNAME).exp -bM:SRE' \
498 @ $(CALC_VERSIONS); \
499 SHLIB=lib$(LIBNAME).so \
501 LIBDEPS="$(LIBDEPS) -lc" \
508 @ $(CALC_VERSIONS); \
509 SHLIB=lib$(LIBNAME).so \
511 LIBDEPS="$(LIBDEPS) -lc" \
516 $(LINK_SO_A_UNPACKED)
518 # Targets to build symbolic links when needed
519 symlink.gnu symlink.solaris symlink.svr3 symlink.irix \
520 symlink.aix symlink.reliantunix:
521 @ $(CALC_VERSIONS); \
522 SHLIB=lib$(LIBNAME).so \
525 @ $(CALC_VERSIONS); \
526 SHLIB=lib$(LIBNAME) \
527 SHLIB_SUFFIX=.dylib \
529 symlink.cygwin symlib.alpha-osf1 symlink.tru64 symlink.tru64-rpath:
530 symlink.hpux32 symlink.hpux64:
531 @ $(CALC_VERSIONS); \
532 SHLIB=lib$(LIBNAME).sl \
535 # Compatibility targets
536 link_o.bsd-gcc-shared link_o.linux-shared link_o.gnu-shared: link_o.gnu
537 link_a.bsd-gcc-shared link_a.linux-shared link_a.gnu-shared: link_a.gnu
538 symlink.bsd-gcc-shared symlink.linux-shared symlink.gnu-shared: symlink.gnu
539 link_o.darwin-shared: link_o.darwin
540 link_a.darwin-shared: link_a.darwin
541 symlink.darwin-shared: symlink.darwin
542 link_o.cygwin-shared: link_o.cygwin
543 link_a.cygwin-shared: link_a.cygwin
544 symlink.cygwin-shared: symlink.cygwin
545 link_o.alpha-osf1-shared: link_o.alpha-osf1
546 link_a.alpha-osf1-shared: link_a.alpha-osf1
547 symlink.alpha-osf1-shared: symlink.alpha-osf1
548 link_o.tru64-shared: link_o.tru64
549 link_a.tru64-shared: link_a.tru64
550 symlink.tru64-shared: symlink.tru64
551 link_o.tru64-shared-rpath: link_o.tru64-rpath
552 link_a.tru64-shared-rpath: link_a.tru64-rpath
553 symlink.tru64-shared-rpath: symlink.tru64-rpath
554 link_o.solaris-shared: link_o.solaris
555 link_a.solaris-shared: link_a.solaris
556 symlink.solaris-shared: symlink.solaris
557 link_o.svr3-shared: link_o.svr3
558 link_a.svr3-shared: link_a.svr3
559 symlink.svr3-shared: symlink.svr3
560 link_o.svr5-shared: link_o.svr3
561 link_a.svr5-shared: link_a.svr3
562 symlink.svr5-shared: symlink.svr3
563 link_o.irix-shared: link_o.irix
564 link_a.irix-shared: link_a.irix
565 symlink.irix-shared: symlink.irix
566 link_o.hpux-shared: link_o.hpux32
567 link_a.hpux-shared: link_a.hpux32
568 symlink.hpux-shared: symlink.hpux32
569 link_o.hpux64-shared: link_o.hpux64
570 link_a.hpux64-shared: link_a.hpux64
571 symlink.hpux64-shared: symlink.hpux64
572 link_o.aix-shared: link_o.aix
573 link_a.aix-shared: link_a.aix
574 symlink.aix-shared: symlink.aix
575 link_o.reliantunix-shared: link_o.reliantunix
576 link_a.reliantunix-shared: link_a.reliantunix
577 symlink.reliantunix-shared: symlink.reliantunix