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[ANNOUNCEMENT] Updated: libtool-devel-20021227, libltdl3-20021227-1
- From: Charles Wilson <cwilson at ece dot gatech dot edu>
- To: cygwin at cygwin dot com
- Date: Sat, 28 Dec 2002 12:24:13 -0500 (EST)
- Subject: [ANNOUNCEMENT] Updated: libtool-devel-20021227, libltdl3-20021227-1
- Reply-to: cygwin at cygwin dot com
libtool-devel has been updated to the 20021227 CVS codebase, as well as
libltdl3. A few additional modifications of my own are also included
that haven't yet made it into CVS HEAD.
Note that libtool-devel-20021227 depends on autoconf-2.55 or newer
(currently, the only cygwin official release of autoconf that satisfies
this is autoconf-devel-2.57-1), and automake-1.7.1 or newer (either
automake-devel-1.7.1-1 or automake-devel-1.7.2-1 will work).
Changes from 20021111-1
o updated to 20021227 CVS
- all of the previous changes in 20021111-1 have been accepted
into libtool CVS HEAD (and are therefore present in 20021227)
o -export-symbols <a def file> now works properly (it's been broken
for over two years...)
Unresolved issues: relinks .exe files over and over and over (e.g. every
time 'make' is called, even if the .exe has already been built. This is
a longstanding libtool bug (e.g. it's not a regression).
==IMPORTANT== see NOTES below.
To update your installation, click on the "Install Cygwin now" link
on the http://cygwin.com/ web page. This downloads setup.exe to
your system. Save it and run setup, answer the questions and pick
up 'libtool-devel' from the 'Devel' category. Because this is an
experimental 'test' release, you must click on the 'Exp' radio button in
order for the 20021111-1 version of libtool-devel to show up, or click
on the spinner (version number) until 20021111-1 is displayed.
Note that downloads from sources.redhat.com (aka cygwin.com) aren't
allowed due to bandwidth limitations. This means that you will need
to find a mirror which has this update.
In the US, ftp://mirrors.rcn.net/mirrors/sources.redhat.com/cygwin/
is a reliable high bandwidth connection.
In Japan, ftp://ftp.u-aizu.ac.jp/pub/gnu/gnu-win32/ is already
In DK, http://mirrors.sunsite.dk/cygwin/ is usually up-to-date.
If one of the above doesn't have the latest version of this package
you can either wait for the site to be updated or find another
Please send questions or comments to the Cygwin mailing list at:
firstname.lastname@example.org . If you want to subscribe go to:
http://cygwin.com/lists.html I would appreciate if you would use
this mailing list rather than emailing me directly. This includes
ideas and comments about the setup utility or Cygwin in general.
If you want to make a point or ask a question the Cygwin mailing
list is the appropriate place.
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Important notes from 20021111:
o DESIGN DECISION: (this is a a change from pre-20021111 behavior)
libtool will refuse to create a shared library if any of its
dependencies are available only as static archives. DLLs may
only depend on other DLLs (*)
o correctly identifies import libraries as "shared objects", so that
libtool's new "DLLs may only depend on other DLLs" behavior isn't
triggered with fatal results when a target DLL's dependencies are
satisfied by import libs. (**)
o Skips the "DLLs may only depend on other DLLs" check when the
dependency is one of the "standard" runtime libs which are currently
available only in static form (libgcc.a, libstdc++.a, etc) on
o Isn't "confused" by the libtool .la files supplied with cygwin's gcc,
even though they only specify static archives (e.g. libstdc++.la
lists "libstdc++.a" but not "cygstdc++.dll" [which is good because
cygstdc++.dll doesn't exist]).
o No longer records compiler builtin library paths or compiler-generated
deplibs (like -luser32 -lgcc) in the "dependency_libs" variable in
generated .la files. (***)
(*) This is a good idea. But, we need workarounds for the standard
runtime libs like libgcc.a, libstdc++.a, etc. These workarounds are
implemented in this libtool release.
(**) this is implemented via a new shell function 'win32_libid'. As
Ralf has pointed out, win32_libid is slow, and can be accelerated in
future versions, depending on the shortcuts we take (balancing pedantic
correctness vs. speed). This version is (relatively) slow, but correct
in all(?) cases.
(***) e.g. if cygwin's gcc-3.2 had been built with this version of
libtool, then /usr/lib/libstdc++.la wouldn't be so "weird". But, don't
bug cgf about this; there are a LOT of changes necessary in the gcc
codebase before that will ever be possible. The gcc team needs to
update to more recent versions of autoconf and automake throughout, stop
hand-editing aclocal.m4 (e.g. put unique code into acinclude.m4 instead,
and use aclocal to regen aclocal.m4 on the fly), etc. Then, and only
then, could the gcc team use a modern version of libtool...Some work
toward that end is occuring; check the binutils and gcc mailing lists
for more info.
Two selftest failures (longstanding, not regressions)
I fixed one bug, but another showed up: $PATH doesn't
get set properly when running this test...This test
used to get skipped on cygwin, but no longer?
compile mode seems okay
install mode seems okay
link mode *always* fails -- like this:
"failed: mkdir .libs
gcc -o hell.exe -g -O -Wl,-someflag=test foo.o"
?? *mkdir* fails??
But it works fine in compile mode---
"passed: mkdir .libs
gcc -c "-DVAR= test " foo.c -DPIC -o .libs/foo.o
gcc -c "-DVAR= test " foo.c -o foo.o >/dev/null 2>&1"
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