Libtool is under constant development, changing to remain up-to-date with modern operating systems. If libtool doesn't work the way you think it should on your platform, you should read this chapter to help determine what the problem is, and how to resolve it.
Libtool comes with its own set of programs that test its capabilities, and report obvious bugs in the libtool program. These tests, too, are constantly evolving, based on past problems with libtool, and known deficiencies in other operating systems.
As described in the `INSTALL' file, you may run make check after you have built libtool (possibly before you install it) in order to make sure that it meets basic functional requirements.
Here is a list of the current programs in the test suite, and what they test for:
test -econstruct is never used in the libtool scripts. Checking for the existence of a file can only be done in a portable way by using
Each of the above tests are designed to produce no output when they are run via make check. The exit status of each program tells the `Makefile' whether or not the test succeeded.
If a test fails, it means that there is either a programming error in libtool, or in the test program itself.
To investigate a particular test, you may run it directly, as you would a normal program. When the test is invoked in this way, it produces output which may be useful in determining what the problem is.
Another way to have the test programs produce output is to set the VERBOSE environment variable to `yes' before running them. For example, env VERBOSE=yes make check runs all the tests, and has each of them display debugging information.
If you think you have discovered a bug in libtool, you should think twice: the libtool maintainer is notorious for passing the buck (or maybe that should be "passing the bug"). Libtool was invented to fix known deficiencies in shared library implementations, so, in a way, most of the bugs in libtool are actually bugs in other operating systems. However, the libtool maintainer would definitely be happy to add support for somebody else's buggy operating system. [I wish there was a good way to do winking smiley-faces in Texinfo.]
Genuine bugs in libtool include problems with shell script portability, documentation errors, and failures in the test suite (see section 11.1 The libtool test suite).
First, check the documentation and help screens to make sure that the behaviour you think is a problem is not already mentioned as a feature.
Then, you should read the Emacs guide to reporting bugs (see section `Reporting Bugs' in The Emacs Manual). Some of the details listed there are specific to Emacs, but the principle behind them is a general one.
Finally, send a bug report to the libtool mailing list <email@example.com> with any appropriate facts, such as test suite output (see section 11.1.2 When tests fail), all the details needed to reproduce the bug, and a brief description of why you think the behaviour is a bug. Be sure to include the word "libtool" in the subject line, as well as the version number you are using (which can be found by typing ltconfig --version).
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