Hello Ralf!
On AIX, when runtime linking is in effect, '-G' linker flag is used
to create the shared objects - which allows undefined symbols.
But libtool.m4 defines the allow_undefined_flag (=-berok) instead
of the no_undefined_flag (=-bernotok), which actually renders the
-no-undefined libtool switch useless when runtime linking is active.
Thank you!
diff --git a/ChangeLog b/ChangeLog
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,19 @@
+2011-06-29 Michael Haubenwallner <michael.haubenwall...@salomon.at>
+
+ With AIX runtime linking, undefined symbols are allowed by default.
+ * libltdl/m4/libtool.m4: Define the 'no_undefined_flag' instead of
+ 'allow_undefined_flag' when AIX runtime linking is active, to
+ actually let the -no-undefined switch have any effect in this case.
+
2011-04-10 Kurt Roeckx <k...@roeckx.be>
tagdemo: do not rely on picking up symbols from indirect deps.
diff --git a/libltdl/m4/libtool.m4 b/libltdl/m4/libtool.m4
--- a/libltdl/m4/libtool.m4
+++ b/libltdl/m4/libtool.m4
@@ -5060,7 +5060,7 @@ _LT_EOF
if test "$aix_use_runtimelinking" = yes; then
# Warning - without using the other runtime loading flags (-brtl),
# -berok will link without error, but may produce a broken library.
- _LT_TAGVAR(allow_undefined_flag, $1)='-berok'
+ _LT_TAGVAR(no_undefined_flag, $1)='-bernotok'
# Determine the default libpath from the value encoded in an
# empty executable.
_LT_SYS_MODULE_PATH_AIX([$1])
@@ -6058,7 +6058,7 @@ if test "$_lt_caught_CXX_error" != yes; then
if test "$aix_use_runtimelinking" = yes; then
# Warning - without using the other runtime loading flags (-brtl),
# -berok will link without error, but may produce a broken library.
- _LT_TAGVAR(allow_undefined_flag, $1)='-berok'
+ _LT_TAGVAR(no_undefined_flag, $1)='-bernotok'
# Determine the default libpath from the value encoded in an empty
# executable.
_LT_SYS_MODULE_PATH_AIX([$1])
