Certificate callback doc.

[openssl.git] / Makefile.shared

diff --git a/Makefile.shared b/Makefile.shared
index e1e214a2a4fc47f1e31038526044cde104fcfb94..e753f44e18fdf6878a25024e5939f6f0d7db6305 100644 (file)
--- a/Makefile.shared
+++ b/Makefile.shared
@@ -135,7 +135,7 @@ LINK_SO_A_VIA_O=    \
   ALL=$$ALLSYMSFLAGS; ALLSYMSFLAGS=; NOALLSYMSFLAGS=; \
   ( $(SET_X); \
     ld $(LDFLAGS) -r -o lib$(LIBNAME).o $$ALL lib$(LIBNAME).a $(LIBEXTRAS) ); \
-  $(LINK_SO) && rm -f $(LIBNAME).o
+  $(LINK_SO) && rm -f lib$(LIBNAME).o
 
 LINK_SO_A_UNPACKED=    \
   UNPACKDIR=link_tmp.$$$$; rm -rf $$UNPACKDIR; mkdir $$UNPACKDIR; \
@@ -207,17 +207,29 @@ link_app.bsd:
        fi; $(LINK_APP)
 
 # For Darwin AKA Mac OS/X (dyld)
-# link_o.darwin produces .so, because we let it use dso_dlfcn module,
-# which has .so extension hard-coded. One can argue that one should
-# develop special dso module for MacOS X. At least manual encourages
-# to use native NSModule(3) API and refers to dlfcn as termporary hack.
+# Originally link_o.darwin produced .so, because it was hard-coded
+# in dso_dlfcn module. At later point dso_dlfcn switched to .dylib
+# extension in order to allow for run-time linking with vendor-
+# supplied shared libraries such as libz, so that link_o.darwin had
+# to be harmonized with it. This caused minor controversy, because
+# it was believed that dlopen can't be used to dynamically load
+# .dylib-s, only so called bundle modules (ones linked with -bundle
+# flag). The belief seems to be originating from pre-10.4 release,
+# where dlfcn functionality was emulated by dlcompat add-on. In
+# 10.4 dlopen was rewritten as native part of dyld and is documented
+# to be capable of loading both dynamic libraries and bundles. In
+# order to provide compatibility with pre-10.4 dlopen, modules are
+# linked with -bundle flag, which makes .dylib extension misleading.
+# It works, because dlopen is [and always was] extension-agnostic.
+# Alternative to this heuristic approach is to develop specific
+# MacOS X dso module relying on whichever "native" dyld interface.
 link_o.darwin:
        @ $(CALC_VERSIONS); \
        SHLIB=lib$(LIBNAME); \
-       SHLIB_SUFFIX=.so; \
+       SHLIB_SUFFIX=.dylib; \
        ALLSYMSFLAGS='-all_load'; \
        NOALLSYMSFLAGS=''; \
-       SHAREDFLAGS="$(CFLAGS) $(SHARED_LDFLAGS)"; \
+       SHAREDFLAGS="$(CFLAGS) `echo $(SHARED_LDFLAGS) | sed s/dynamiclib/bundle/`"; \
        if [ -n "$(LIBVERSION)" ]; then \
                SHAREDFLAGS="$$SHAREDFLAGS -current_version $(LIBVERSION)"; \
        fi; \
@@ -281,7 +293,7 @@ link_a.cygwin:
        fi; \
        dll_name=$$SHLIB$$SHLIB_SOVER$$SHLIB_SUFFIX; \
        $(PERL) util/mkrc.pl $$dll_name | \
-               $(CROSS_COMPILE_PREFIX)windres -o rc.o; \
+               $(CROSS_COMPILE)windres -o rc.o; \
        extras="$$extras rc.o"; \
        ALLSYMSFLAGS='-Wl,--whole-archive'; \
        NOALLSYMSFLAGS='-Wl,--no-whole-archive'; \