Hi!
It's been quite a while, but now i'd have a small patch for interix libtool
(again). The background for the patch is building GLIB on interix, which
initially didn't succeed. Actually, libtool did nothing wrong, just the system
linker is broken in so many different ways, that each day a new workaround is
required. Today's two points of the patch
* remove -E/--export-dynamic, as it destroys interix shared libraries
(any way to keep -E for executables, and remove it for libraries only?)
* remove --retain-symbols-file, as this has no effect except loads and
loads of warnings...
Could you please review, and give me some feedback? Thanks!
markus
diff -ru libtool-2.4.orig/libltdl/m4/libtool.m4 libtool-2.4/libltdl/m4/libtool.m4
--- libtool-2.4.orig/libltdl/m4/libtool.m4 2011-06-09 11:41:02 +0200
+++ libtool-2.4/libltdl/m4/libtool.m4 2011-06-09 11:51:13 +0200
@@ -4716,7 +4716,10 @@
_LT_TAGVAR(hardcode_direct, $1)=no
_LT_TAGVAR(hardcode_shlibpath_var, $1)=no
_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
- _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+ # On interix, -E/--export-dynamic exists, but seems broken in some
+ # cases. It isn't even possible to link a -E built shared lib to
+ # another shared library (with or without -E).
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)=
# Hack: On Interix 3.x, we cannot compile PIC because of a broken gcc.
# Instead, shared libraries are loaded at an image base (0x10000000 by
# default) and relocated if they conflict, which is a slow very memory
@@ -4724,7 +4727,11 @@
# 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link
# time. Moving up from 0x10000000 also allows more sbrk(2) space.
_LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
- _LT_TAGVAR(archive_expsym_cmds, $1)='sed "s,^,_," $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--retain-symbols-file,$output_objdir/$soname.expsym ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+ # It does not seem to have any positive or negative impact to retain
+ # symbols or not. The only thing that happens is gazillions of warnings
+ # polluting the linker output, as interix'ld doesn't seem to be able
+ # to correctly handle retaining.
+ _LT_TAGVAR(archive_expsym_cmds, $1)="$_LT_TAGVAR(archive_cmds, $1)"
;;
gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu)
@@ -6297,7 +6304,10 @@
_LT_TAGVAR(hardcode_direct, $1)=no
_LT_TAGVAR(hardcode_shlibpath_var, $1)=no
_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
- _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+ # On interix, -E/--export-dynamic exists, but seems broken in some
+ # cases. It isn't even possible to link a -E built shared lib to
+ # another shared library (with or without -E).
+ _LT_TAGVAR(export_dynamic_flag_spec, $1)=
# Hack: On Interix 3.x, we cannot compile PIC because of a broken gcc.
# Instead, shared libraries are loaded at an image base (0x10000000 by
# default) and relocated if they conflict, which is a slow very memory
@@ -6305,7 +6315,11 @@
# 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link
# time. Moving up from 0x10000000 also allows more sbrk(2) space.
_LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
- _LT_TAGVAR(archive_expsym_cmds, $1)='sed "s,^,_," $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--retain-symbols-file,$output_objdir/$soname.expsym ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+ # It does not seem to have any positive or negative impact to retain
+ # symbols or not. The only thing that happens is gazillions of warnings
+ # polluting the linker output, as interix'ld doesn't seem to be able
+ # to correctly handle retaining.
+ _LT_TAGVAR(archive_expsym_cmds, $1)="$_LT_TAGVAR(archive_cmds, $1)"
;;
irix5* | irix6*)
case $cc_basename in
