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100 lines
4.3 KiB
Text
100 lines
4.3 KiB
Text
The test suite was originally written by Steve McGee and Chris Arthur.
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It is covered by the GNU General Public License (Version 2), described
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in the file COPYING. It has been maintained as part of GNU make proper
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since GNU make 3.78.
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This entire test suite, including all test files, are copyright and
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distributed under the following terms:
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-----------------------------------------------------------------------------
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Copyright (C) 1992-2023 Free Software Foundation, Inc.
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This file is part of GNU Make.
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GNU Make is free software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation; either version 3 of the License, or (at your option) any later
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version.
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GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program. If not, see <http://www.gnu.org/licenses/>.
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-----------------------------------------------------------------------------
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The test suite requires Perl. These days, you should have at least Perl 5.6.
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Newer versions may be required: I don't test regularly with older versions
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than what is installed by default on my development systems.
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The test suite assumes that the first "diff" it finds on your PATH is
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GNU diff, but that only matters if a test fails.
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To run the test suite on a UNIX system, use "perl ./run_make_tests"
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(or just "./run_make_tests" if you have a perl on your PATH).
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To run the test suite on Windows NT or DOS systems, use
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"perl.exe ./run_make-tests.pl".
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By default, the test engine picks up the first executable called "make"
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that it finds in your path. You may use the -make_path option (i.e.,
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"perl run_make_tests -make_path /usr/local/src/make-3.78/make") if
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you want to run a particular copy. This now works correctly with
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relative paths and when make is called something other than "make" (like
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"gmake").
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Tests cannot end with a "~" character, as the test suite will ignore any
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that do (I was tired of having it run my Emacs backup files as tests :))
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Also, sometimes the tests may behave strangely on networked
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filesystems. You can use mkshadow to create a copy of the test suite in
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/tmp or similar, and try again. If the error disappears, it's an issue
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with your network or file server, not GNU make (I believe). This
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shouldn't happen very often anymore: I've done a lot of work on the
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tests to reduce the impacts of this situation.
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A directory named "work" will be created when the tests are run which
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will contain any makefiles and "diff" files of tests that fail so that
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you may look at them afterward to see the output of make and the
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expected result.
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There is a -help option which will give you more information about the
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other possible options for the test suite.
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Open Issues
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-----------
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The test suite has a number of problems which should be addressed. One VERY
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serious one is that there is no real documentation. You just have to see the
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existing tests. Use the newer tests: many of the tests haven't been updated
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to use the latest/greatest test methods. See the ChangeLogs for pointers.
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The second serious problem is that it's not relocatable: when you build out of
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the source tree it creates symlinks, which doesn't work on every system and is
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just bogus to boot.
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The third serious problem is that it's not parallelizable: it scribbles all
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over its installation directory and so can only test one make at a time.
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The fourth serious problem is that since the tests scribble all over the same
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directory (a) they can interfere with each other and (b) we cannot preserve
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the full environment for every test, if it involves creating temporary files
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etc. as they must be deleted before the next test.
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To solve these the suite should create a separate directory for EVERY test,
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local to the build directory, and all temporary files should exist in that
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directory. The directory can be preserved on error, or removed if the test
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succeeds (unless --keep is given).
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Bugs
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----
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Any complaints/suggestions/bugs/etc. for the test suite itself should be
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handled the same way as normal GNU make bugs/problems (see the README for GNU
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make).
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Paul D. Smith
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Chris Arthur
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