Configurations/10-main.cf: AIX "facelift".

Improve interchangeability of aix*-gcc targets by linking shared
libraries with -static-libgcc, and address linking problems with
vendor compiler.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

Configurations/10-main.conf

@@ -1159,6 +1159,11 @@ sub vms_info {
     },
 
 #### IBM's AIX.
+    # Below targets assume AIX >=5. Caveat lector. If you are accustomed
+    # to control compilation "bitness" by setting $OBJECT_MODE environment
+    # variable, then you should know that in OpenSSL case it's considered
+    # only in ./config. Once configured, build procedure remains "deaf" to
+    # current value of $OBJECT_MODE.
     "aix-gcc" => {
         inherit_from     => [ "BASE_unix", asm("ppc32_asm") ],
         cc               => "gcc",
@@ -1172,7 +1177,7 @@ sub vms_info {
         perlasm_scheme   => "aix32",
         dso_scheme       => "dlfcn",
         shared_target    => "aix-shared",
-        shared_ldflag    => "-shared -Wl,-G",
+        shared_ldflag    => "-shared -static-libgcc -Wl,-G",
         shared_extension => ".so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
         arflags          => "-X32",
     },
@@ -1189,13 +1194,10 @@ sub vms_info {
         perlasm_scheme   => "aix64",
         dso_scheme       => "dlfcn",
         shared_target    => "aix-shared",
-        shared_ldflag    => "-maix64 -shared -Wl,-G",
+        shared_ldflag    => "-maix64 -shared -static-libgcc -Wl,-G",
         shared_extension => ".so.\$(SHLIB_MAJOR).\$(SHLIB_MINOR)",
         arflags          => "-X64",
     },
-    # Below targets assume AIX 5. Idea is to effectively disregard
-    # $OBJECT_MODE at build time. $OBJECT_MODE is respected at
-    # ./config stage!
     "aix-cc" => {
         inherit_from     => [ "BASE_unix", asm("ppc32_asm") ],
         cc               => "cc",
@@ -1206,6 +1208,7 @@ sub vms_info {
         sys_id           => "AIX",
         bn_ops           => "BN_LLONG RC4_CHAR",
         thread_scheme    => "pthreads",
+        ex_libs          => threads("-lpthreads"),
         perlasm_scheme   => "aix32",
         dso_scheme       => "dlfcn",
         shared_target    => "aix-shared",
@@ -1223,6 +1226,7 @@ sub vms_info {
         sys_id           => "AIX",
         bn_ops           => "SIXTY_FOUR_BIT_LONG RC4_CHAR",
         thread_scheme    => "pthreads",
+        ex_libs          => threads("-lpthreads"),
         perlasm_scheme   => "aix64",
         dso_scheme       => "dlfcn",
         shared_target    => "aix-shared",

Makefile.shared

@@ -150,8 +150,8 @@ LINK_SO_DSO=	INHIBIT_SYMLINKS=yes; SHOBJECTS="$(LIBEXTRAS)"; $(LINK_SO)
 LINK_SO_SHLIB_VIA_O=	\
   SHOBJECTS=$(DSTDIR)/lib$(LIBNAME).o; \
   ALL=$$ALLSYMSFLAGS; ALLSYMSFLAGS=; NOALLSYMSFLAGS=; \
-  ( echo ld $(LDFLAGS) -r -o $$SHOBJECTS.o $$ALL lib$(LIBNAME).a $(LIBEXTRAS); \
-    ld $(LDFLAGS) -r -o $$SHOBJECTS.o $$ALL $(DSTDIR)/lib$(LIBNAME).a $(LIBEXTRAS) ); \
+  ( echo ld $(LDFLAGS) -r -o $$SHOBJECTS $$ALL lib$(LIBNAME).a $(LIBEXTRAS); \
+    ld $(LDFLAGS) -r -o $$SHOBJECTS $$ALL $(DSTDIR)/lib$(LIBNAME).a $(LIBEXTRAS) ); \
   $(LINK_SO) && ( echo rm -f $$SHOBJECTS; rm -f $$SHOBJECTS )
 
 LINK_SO_SHLIB_UNPACKED=	\
@@ -526,6 +526,7 @@ link_dso.aix:
 	ALLSYMSFLAGS=''; \
 	NOALLSYMSFLAGS=''; \
 	SHAREDFLAGS='$(CFLAGS) $(SHARED_LDFLAGS) -Wl,-bexpall,-bnolibpath,-bM:SRE'; \
+	rm -f $(DSTDIR)/$$SHLIB$$SHLIB_SOVER 2>&1 > /dev/null ; \
 	$(LINK_SO_DSO);
 link_shlib.aix:
 	@ $(CALC_VERSIONS); \
@@ -536,6 +537,7 @@ link_shlib.aix:
 	ALLSYMSFLAGS='-bnogc'; \
 	NOALLSYMSFLAGS=''; \
 	SHAREDFLAGS='$(CFLAGS) $(SHARED_LDFLAGS) -Wl,-bexpall,-bnolibpath,-bM:SRE'; \
+	rm -f $(DSTDIR)/$$SHLIB$$SHLIB_SOVER 2>&1 > /dev/null ; \
 	$(LINK_SO_SHLIB_VIA_O)
 link_app.aix:
 	LDFLAGS="$(CFLAGS) $(LDFLAGS) -Wl,-brtl,-blibpath:$(LIBRPATH):$${LIBPATH:-/usr/lib:/lib}"; \