* ltconfig.in (exclude_expsyms): Exclude _GLOBAL_OFFSET_TABLE_ by

default, as most a.out platforms use it, and end up in trouble if
we preload it, so it's safer to rule it out by default, and
special case its removal from exclude_expsyms if someone ever
complains.

diff --git a/ChangeLog b/ChangeLog
index 34a2e7c845294a1fd6441d309a73e888901c82cb..8f3c8e5cd444f6b4bab3535211d147f331633ba4 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+1999-04-05  Alexandre Oliva  <oliva@dcc.unicamp.br>
+
+       * ltconfig.in (exclude_expsyms): Exclude _GLOBAL_OFFSET_TABLE_ by
+       default, as most a.out platforms use it, and end up in trouble if
+       we preload it, so it's safer to rule it out by default, and
+       special case its removal from exclude_expsyms if someone ever
+       complains.
+
 1999-04-05 Thomas Tanner  <tanner@gmx.de>
 
        * doc/libtool.texi: reorder tests to reflect execution order,

diff --git a/ltconfig.in b/ltconfig.in
index bdf14c1dd314e319d638b7d8243b123295fc66f0..21a380ec7d5a076d5506bd9650dab691a337c68f 100755 (executable)
--- a/ltconfig.in
+++ b/ltconfig.in
@@ -1018,7 +1018,12 @@ include_expsyms=
 # it will be wrapped by ` (' and `)$', so one must not match beginning or
 # end of line.  Example: `a|bc|.*d.*' will exclude the symbols `a' and `bc',
 # as well as any symbol that contains `d'.
-exclude_expsyms=
+exclude_expsyms="_GLOBAL_OFFSET_TABLE_"
+# Although _GLOBAL_OFFSET_TABLE_ is a valid symbol C name, most a.out
+# platforms (ab)use it in PIC code, but their linkers get confused if
+# the symbol is explicitly referenced.  Since portable code cannot
+# rely on this symbol name, it's probably fine to never include it in
+# preloaded symbol tables.
 extract_expsyms_cmds=
 
 case "$host_os" in
@@ -1031,10 +1036,6 @@ cygwin* | mingw*)
   fi
   ;;
 
-freebsd2* | sunos4*)
-  exclude_expsyms="_GLOBAL_OFFSET_TABLE_"
-  ;;
-
 esac
 
 ld_shlibs=yes