docs: report few more automake parsing limitations
Partly motivated by automake bug#8360.
* doc/automake.texi (General Operation): Report few more automake
limitations w.r.t. parsing of unusual makefile constructs. Related
minor reorderings.
* tests/doc-parsing-buglets-colneq-subst.test: New test.
* tests/doc-parsing-buglets-tabs.test: Likewise.
* tests/Makefile.am (TESTS): Update.
* tests/Makefile.am (TESTS): Also list ...
* tests/java-empty-classpath.test: ... this test. Since we are
at it, remove trailing whitespace from a couple of lines.
Daniel Richard G [Tue, 16 Aug 2011 13:19:14 +0000 (15:19 +0200)]
java: avoid compilation errors when CLASSPATH is empty
* lib/am/java.am (CLASSPATH_ENV): When redefining `$CLASSPATH',
do not append an empty component in case the previous value of
CLASSPATH is empty or unset.
* tests/java-empty-classpath.test: New test.
* tests/Makefile.am (TESTS): Update.
parallel-tests: no more spurious successes for FreeBSD make
Work around a bug of FreeBSD make bug that was causing the
automake-generated "check" target to complete with success
even if some tests failed; this happened only when FreeBSD
make was run in concurrent mode (as in, e.g., "make -j2
check"). The bug is not present in NetBSD make.
This change fixes automake bug#9245:
<http://debbugs.gnu.org/cgi/bugreport.cgi?bug=9245>
See also FreeBSD PR bin/159730:
<http://www.freebsd.org/cgi/query-pr.cgi?pr=159730>
* lib/am/check.am [%?PARALLEL_TESTS%] $(TEST_SUITE_LOG): Use a
more "safe" (and apparently redundant) idiom to exit with error,
so that the non-zero exit status is picked up also by FreeBSD
make when it's running in concurrent mode.
* NEWS: Update.
* tests/check-concurrency-bug9245.test: New test.
* tests/Makefile.am (TESTS): Update.
* tests/distcheck-configure-flags-am.test: Avoid using `+=' too
liberally with AM_DISTCHECK_CONFIGURE_FLAGS, since the line breaks
so introduced, in conjunction with single quotes, might confuse
Solaris make.
maintcheck: fix maintainer-check failures, both real and spurious
* tests/amhello-binpkg.test: Use "$MAKE", not bare "make".
* Makefile.am (sc_perl_local): Also allow perl special variable
`$~' to be localized. And be slightly laxer in the regexp, to
allow for usages like "local $_ = $foo;".
(sc_tests_overriding_macros_on_cmdline): Also allow for command
line overriding of the `DISABLE_HARD_ERRORS' make variable. Try
to avoid false positives for usages like "$MAKE || st=$?".
tests: relax a test on amhello examples to cater to Solaris tar
* tests/amhello-binpkg.test: When the tar implementation in use
is not GNU tar, relax the tests on tar output, to avoid spurious
failures. For example, "tar cvf ..." with GNU tar can output
lines like "./usr/bin/hello" on the standard output, while with
Solaris tar it can output lines like "a ./usr/bin/hello 8K" on
standard output, and with Heirloom tar it can output lines like
"a ./usr/bin/hello 15 tape blocks" on standard error.
tests: fix weakness in 'tests-environment-backcompat.test'
* tests/tests-environment-backcompat.test: Do not override the
content of xfailing test `baz.test' with a "weaker" version that
fails unconditionally: the test must fail only when the 'strict'
pragma is in use, in order not to reduce coverage.
tests: portability fixes in tests on amhello examples
* tests/amhello-binpkg.test: Don't use "tar xzf too.tag.gz" to
extract a gzip-compressed tarball, that's unportable to some
tar implementations; use the "gzip -dc fo.tar.gz | tar xf -"
idiom instead.
* tests/amhello-cflags.test: Likewise.
* tests/amhello-cross-compile.test: Likewise.
docs, tests: synchronize examples from docs to tests
* tests/README (Writing test cases): Give suggestions on how to
keep test cases and examples in the documentation synchronized.
* doc/automake.texi: Improve or fix existing testcase-referencing
comments, and add many new ones.
* HACKING (Administrivia): Suggest to test complex examples and
idioms from the manual.
* tests/specflg8.test: Improve synchronization with the example
in the manual.
* tests/output11.test:Likewise.
* tests/txinfo21.test:Likewise.
* tests/interp.test: Likewise. Since we are at it, and enable
the `errexit' shell flag, do related changes, and add trailing
`:'command.
* tests/amhello-cflags.test: New test.
* tests/amhello-cross-compile.test: Likewise.
* tests/amhello-binpkg.test: Likewise.
* tests/tests-environment-backcompat: Likewise.
* tests/parallel-tests-log-compiler-example.test: Likewise.
* tests/Makefile.am (TESTS): Update.
* parallel-tests-maint:
Revert "docs: parallel-tests is not experimental anymore"
parallel-tests: stricter checks on DISABLE_HARD_ERRORS support
docs: parallel-tests is not experimental anymore
check: document and test $(TEST_SUITE_LOG) overriding
docs: avoid a footnote, some related rewordings and improvements
* doc/automake.texi (Dist): Reword the part about automatically
distributed files to avoid a footnote. Since we are at it, extend
a bit, and add an example and a reference to a relevant test case.
It turned out that the current work to introduce TAP and SubUnit
support in Automake-generated testsuite harnesses will probably
require the introduction of slight incompatibilities in the
'parallel-tests' behaviour, starting from release 1.12 onward.
So it's advisable to continue to characterize the 'parallel-tests'
support as "experimental" in maintenance release 1.11.2.
* doc/automake.texi: Break few overly long lines, throughout the
file.
("Simple Tests"): Move @vindex for XFAIL_TESTS to the correct
position, i.e., before and not after the paragraph where it is
introduced.
("Options" @item ansi2knr): Use @pxref instead of @xref. This
fixes a texinfo warning.
("Other things Automake recognizes" @item AM_C_PROTOTYPES): Use
@pxref instead of @ref.
help: improve text about automatically-distributed files
This change fixes automake bug#7819.
* automake.in (usage): Distinguish between files that are always
automatically distributed when found, and those which are only
"under certain conditions".
* doc/automake.texi (Basics of Distribution): Update accordingly.
* tests/autodist-subdir.test: Update.
* tests/autodist-no-duplicate.test: Likewise.
* tests/autodist.test: Likewise.
(configure.in): Remove useless call to AM_MAINTAINER_MODE.
* automake.in (print_autodist_files): New subroutine,
extracted from ...
(usage): ... this, which now uses it.
* tests/autodist-no-duplicate.test: New test.
* tests/Makefile.am (TESTS): Update.
* Makefile.am (sc_tests_plain_aclocal, sc_tests_plain_perl,
sc_tests_plain_autoconf, sc_tests_plain_automake,
sc_tests_plain_autoupate): Be stricter in matching an erroneous
literal command, i.e., `aclocal', `automake', `perl', etc.
* maint:
check: don't use multi-line coloring for the report
ansi2knr: deprecate, it will go away in the next major release
docs: primary/prefix combination "pkglib_PROGRAMS" is now invalid
docs: replace obsolete @vindex entry with a useful one
docs: AM_DISTCHECK_CONFIGURE_FLAGS is for corner cases
Bert Wesarg [Fri, 17 Jun 2011 19:59:52 +0000 (21:59 +0200)]
check: don't use multi-line coloring for the report
"less -R" can't handle multi-line coloring as it is done for the
check reports of the serial and parallel testsuite, because of
performance reasons. Thus, color each line of the check report
by its own.
* lib/am/check.am (am__text_box): Accept colors for lines, and
color each line by its own.
[%?PARALLEL_TESTS%] $(TEST_SUITE_LOG): Let am__text_box handle
the line coloring.
[!%?PARALLEL_TESTS%] $(check-TESTS): Color each report line by
its own.
* THANKS: Update.
ansi2knr: deprecate, it will go away in the next major release
* doc/automake.texi: Loudly and repeatedly state that the old
de-ANSI-fication features are now deprecated and will be removed
in the next major Automake release. Other related adjustments.
* lib/Automake/Options.pm (_process_option_list ): Give a warning
in the `obsolete' category when the `ansi2knr' option is used.
* m4/protos.m4 (AM_C_PROTOTYPES): Deprecate this macro: a warning
in the `obsolete' category will be emitted it if is used.
* tests/ansi2knr-deprecation.test: New test.
* tests/Makefile.am (TESTS): Update.
* tests/ansi.test: Adjust, by calling autoconf and/or automake
with the `-Wno-obsolete' flag.
* tests/ansi10.test: Likewise.
* tests/ansi2.test: Likewise.
* tests/ansi3.test: Likewise.
* tests/ansi3b.test: Likewise.
* tests/ansi4.test: Likewise.
* tests/ansi5.test: Likewise.
* tests/ansi6.test: Likewise.
* tests/ansi7.test: Likewise.
* tests/ansi8.test: Likewise.
* tests/ansi9.test: Likewise.
* tests/cxxansi.test: Likewise.
* tests/libobj8.test: Likewise.
* NEWS: Update about the future planned backward-incompatibility
due to the removal of de-ANSI-fication feature.
docs: primary/prefix combination "pkglib_PROGRAMS" is now invalid
* doc/automake.texi (Program Sources): pkglib_PROGRAMS is not a
valid combination anymore, so don't document it. Inconsistency
introduced in commit `v1.11-373-g9ca6326'.
docs: AM_DISTCHECK_CONFIGURE_FLAGS is for corner cases
* doc/automake.texi (Checking the Distribution): Explain that the
developers should take care of making their code buildable without
requiring any special configure options, so that in general
AM_DISTCHECK_CONFIGURE_FLAGS shouldn't be used. Give an example
of where its use is legitimate.
* maint:
news: update w.r.t. introduction of AM_DISTCHECK_CONFIGURE_FLAGS
tests: optimize tests on primary/prefix mismatch for speed
Warnings about primary/prefix mismatch fixed and extended.
maintcheck: DISTCHECK_CONFIGURE_FLAGS can be defined on make cmdline
distcheck: add support for AM_DISTCHECK_CONFIGURE_FLAGS
docs: better documentation for silent make rules
Merge branch 'am-distcheck-configure-flags' into maint
* am-distcheck-configure-flags:
maintcheck: DISTCHECK_CONFIGURE_FLAGS can be defined on make cmdline
distcheck: add support for AM_DISTCHECK_CONFIGURE_FLAGS
tests: optimize tests on primary/prefix mismatch for speed
* tests/primary-prefix-invalid-couples.test: Partial rewrite, in
order to use just a single automake invocation rather than one
invocation for each invalid primary/prefix couple. This improves
the test script execution time by an order of magnitude.
Since we are at it, throw in some other improvements to avoid
unrelated automake warnings and failures that could potentially
cause false positives w.r.t. the automake exit status.
Warnings about primary/prefix mismatch fixed and extended.
* automake.in (%standard_prefix): Add `doc' and `locale'.
Rename `pkgdatadir' to `pkgdata'. Similarly for`pkglibdir',
`pkgincludedir' and `pkglibexecdir'.
(handle_programs): List `pkglibexec', not `pkglib', among the
prefixes valid for the `PROGRAMS' primary.
(handle_data): List also `doc' among the prefixes valid for
the `DATA' primary. This is required by automake's own build
system.
* tests/dirforbid.test: Test removed, superseded by ...
* tests/primary-prefix-invalid-couples.test: ... this new test.
* tests/primary-prefix-valid-couples.test: New test.
* tests/primary-prefix-documented-valid.test: Likewise.
* tests/primary-prefix-force-valid.test: Likewise.
* tests/java3.test: Adjusted, and extended a bit.
* tests/Makefile.am (TESTS): Updated.
* NEWS: Updated.
maintcheck: DISTCHECK_CONFIGURE_FLAGS can be defined on make cmdline
* Makefile.am (sc_tests_overriding_macros_on_cmdline): It's now
acceptable that the test scripts override DISTCHECK_CONFIGURE_FLAGS
on the make command line. Update comments accordingly. Since we
are at it, make the relevant grepping rules slightly tighter.
distcheck: add support for AM_DISTCHECK_CONFIGURE_FLAGS
* doc/automake.texi (Checking the Distribution): Suggest to use
AM_DISTCHECK_CONFIGURE_FLAGS, not DISTCHECK_CONFIGURE_FLAGS, to
define (in the top-level Makefile.am) extra flags to be passed
to configure at "make distcheck" time; DISTCHECK_CONFIGURE_FLAGS
should be reserved for the user. Add proper `@vindex' directive.
Document that AM_DISTCHECK_CONFIGURE_FLAGS is not honoured in a
subpackage Makefile.am, but the flags in it are passed down to
the configure script of the subpackage.
* lib/am/distdir.am (distcheck): Also pass the flags in
$(AM_DISTCHECK_CONFIGURE_FLAGS) to the configure invocation.
Update comments.
* tests/defs.in.test (AM_DISTCHECK_CONFIGURE_FLAGS,
DISTCHECK_CONFIGURE_FLAGS): Unset in case they are exported in
the environment, they might improperly influence our testsuite.
* tests/distcheck-configure-flags.test: New test.
* tests/distcheck-configure-flags-am.test: Likewise.
* tests/distcheck-configure-flags-subpkg.test: Likewise.
* distcheck-hook.test: Likewise.
* distcheck-hook2.test: Likewise.
* tests/Makefile.am (TESTS): Update.
* doc/automake.texi (Options): Detailed description of the
automake option `silent-rules' moved from here ...
(Silent Make): ... into this new chapter, expanded, improved,
and subdivided into ...
(Make verbosity, Tricks For Silencing Make,
Automake silent-rules Option): ... these new sections.
(@menu, @detailmenu): Update.
* tests/silent-configsite.test: New test, checking that the
user can control default mode of silent-rules from config.site,
as is documented in the manual.
* tests/Makefile.am (TESTS): Updated.
Before this patch, the only way offered by tests/defs to
properly signal a hard error was the `framework_failure_'
function. But the error message issued by that function,
as its name would suggest, refers to a set-up failure in the
testsuite, while hard errors can obviously also be due to
other reasons. The best way to fix this inconsistency is to
introduce a new function with a more general error message.
Inspired by a recent similar change to Gnulib's tests/init.sh.
* tests/defs.in (fatal_): New function.
* tests/README (Section "Writing test cases" subsection "Do"):
Suggest the use of `fatal_', not of `framework_failure_', for
generic hard errors. The latter should be reserved for "real"
set-up failures.
* maint:
maintcheck: fix some failures, extend some checks
automake, aclocal: honour configure-time AUTOCONF and AUTOM4TE
build: the user can override AUTOM4TE, AUTORECONF and AUTOUPDATE too
remake: behave better with non-GNU make in subdirectories
tests/README: fix example about `make -e' usage
* Makefile.am (sc_diff_automake_in_automake): Update, as we
now expect 9 lines, not 8, to be changed from `automake.in'
to `automake'.
(sc_diff_aclocal_in_aclocal): New maintainer check, similar to
the above, and checking that only 10 lines are changed from
`aclocal.in' to `aclocal'.
(syntax_check_rules): Update.
(sc_tests_Exit_not_exit): Exempt self tests `self-check-*.test'
from this check, as they can legitimately use the bare `exit'
builtin in various places.
* doc/automake.texi (Python): Remove stray `@' from the end of
a line. Typo introduced in commit `v1.11-312-g5bf7af6'.
* tests/depcomp8a.test: Pass DISTCHECK_CONFIGURE_FLAGS to make
from the environment rather than from the command line, to
pacify the `sc_tests_overriding_macros_on_cmdline' maintainer
check.
* tests/depcomp8b.test: Likewise.
automake, aclocal: honour configure-time AUTOCONF and AUTOM4TE
Currently, the Automake's own configure script allow definition
of AUTOCONF and AUTOM4TE, expected to point respectively to an
autoconf and autom4te programs. But while these definitions are
honoured in the Automake's build systems and test suite, they
were *not* honoured in the generated `automake' and `aclocal'
scripts. This behaviour, apart from being wrong in that it does
not allow the user enough freedom in choosing his tools, also
caused inconsistencies in the test suite, brining to spurious
failures.
Problem reported by Graham Reitz on the automake list; see thread:
<http://lists.gnu.org/archive/html/automake/2011-05/msg00022.html>
* automake.in ($traces): Use `@am_AUTOCONF', not simply `autoconf'.
* aclocal.in ($traces): Use `@am_AUTOM4TE', not simply `autom4te'.
* Makefile.am (do_subst): Substitute also `@am_AUTOCONF' and
`@am_AUTOM4TE'.
* NEWS: Update.
* THANKS: Update.
build: the user can override AUTOM4TE, AUTORECONF and AUTOUPDATE too
Our build system allows the user to override AUTOCONF and AUTOHEADER
at configure time, and honours these overrides in our testsuite.
But it didn't do the same with AUTOM4TE, AUTORECONF and AUTOUPDATE.
This change fixes that inconsistency.
* configure.ac (am_AUTOM4TE, am_AUTOUPDATE, am_AUTORECONF): New
AC_SUBSTitutions. Update comments.
* tests/defs.in ($AUTOUPDATE): Default to `@am_AUTOUPDATE@' now.
($AUTOM4TE): New variable, defaulting to `@am_AUTOM4TE@'.
($AUTORECONF): New variable, defaulting to `@am_AUTORECONF@'.
* doc/Makefile.am ($(srcdir)/amhello-1.0.tar.gz): Update.
remake: behave better with non-GNU make in subdirectories
Currently, with every decent make program, it is possible to
rebuild out-of-date autotools-generated files with a simple
"make Makefile" -- but for this to work reliably with non-GNU
make implementations, the command must be issued from the
top-level directory. This patch removes such limitation.
* lib/am/configure.am (am--refresh): Depend on `%MAKEFILE%'.
* tests/defs.in (using_gmake): New function, backported from the
`master' branch (and simplified).
* tests/remake-subdir.test: New test.
* tests/remake-subdir2.test: Likewise.
* tests/remake-subdir-gnu.test: Likewise.
* tests/remake-subdir-from-subdir.test: Likewise.
* tests/Makefile.am (TESTS): Update.
Ralf Wildenhues [Sun, 22 May 2011 17:02:27 +0000 (19:02 +0200)]
tests/README: fix example about `make -e' usage
* tests/README (Section "Writing test cases" subsection "Do"): When
some variable is never initialized in the Makefile, `-e' is not
necessary in order to override it. DESTDIR is such a variable: we
ensure that we do not ever initialize it. And as such, it is quite
portable to use:
$ make DESTDIR=/foo/bar install
and in fact, quite widely used.
So our example about when `make -e' is required, which references
the `DESTDIR' variable, is poorly chosen, if not downright wrong.
Rewrite it to use `prefix' as the overridden variable instead.
parallel-tests: stricter checks on DISABLE_HARD_ERRORS support
* tests/parallel-tests-harderror.test: New test, doing more
in-depth checks on DISABLE_HARD_ERRORS.
* tests/parallel-tests.test: Remove tests on DISABLE_HARD_ERRORS,
now redundant.
* tests/Makefile.am (TESTS): Update.
* maint:
testsuite: avoid re-running few tests with 'parallel-tests' option
testsuite: allow tests to avoid the use of 'parallel-tests' option
tests/README: update obsoleted advice
test defs: rename requirement 'non-cross' -> 'native'
testsuite: be more cross-compile friendly
testsuite: avoid re-running few tests with 'parallel-tests' option
Some tests in our testsuite use the 'simple-tests' driver only
marginally, or simply as a mean to conveniently check unrelated
invariants. It makes little sense to force these tests to also
run with the 'parallel-tests' Automake option active, as doing so
offers no real gain in coverage, while often causing a measurable
overhead in execution time (for an already too-slow testsuite).
* tests/pr401.test (parallel_tests): Define to "no", to prevent
the generation of a sibling test script using the 'parallel-tests'
driver.
* tests/pr401b.test: Likewise.
* tests/pr401c.test: Likewise.
testsuite: allow tests to avoid the use of 'parallel-tests' option
* tests/gen-parallel-tests: Do not generate "siblings" for tests
that explicitly define the `parallel_tests', whether to "yes" or
to any other value. Extend heading comments to give a rationale
for this behaviour.
* tests/README: Update.
* tests/README (Section "Writing test cases" subsection "Do"):
Do not suggest to use the `*-p.test' pattern for the names of
hand-written tests which use the `parallel-tests' Automake option.
Not only is this not respected by the existing tests, but it is
more likely to cause conflicts with auto-generated tests.
So, suggest to *avoid* using the `*-p.test' pattern in names
of hand-written tests instead.
(Section "Writing test cases" subsection "Do not"): When
suggesting not to override Makefile variables using command
line arguments, do not use the badly outdated variables `U'
and 'ANSI2KNR' in the example; instead, use the more common
and typical `DESTDIR'.
* tests/defs.in (cross_compiling): New subroutine.
(am__tool_prefix): New internal variable.
(gcc, g++, gcj): Force the use of the correct "tool prefix"
when cross compiling.
(gfortran, g77, non-cross): New requirements.
The parallel-tests driver has now been used quite extensively
by a fair number of real-world applications (e.g., GNU coreutils,
GNU libtool, GNU grep, and various packages using Gnulib), and
thus exposed to adequate on-field testing. So there's no point
in declaring it experimental anymore (which would risk to make
potential users shy away from it).
* doc/automake.texi (Simple Tests using parallel-tests): Do not
declare the parallel-tests driver as "experimental" anymore.
check: document and test $(TEST_SUITE_LOG) overriding
* doc/automake.texi (Simple Tests using parallel-tests): Explain
how and why TEST_SUITE_LOG can be overridden at runtime.
* tests/parallel-tests-log-override-1.test: New test, check that
the newly documented idiom and similar usages are truly supported.
* tests/parallel-tests-log-override-2.test: Likewise.
* tests/parallel-tests-log-override-recheck.test: Likewise.
* tests/Makefile.am (TESTS): Update.
tests: fix spurious failure of txinfo21.test on FreeBSD
* tests/txinfo21.test: Use the `is_newest' subroutine instead of
the `ls -t' hack to to determine whether a file has been updated.
This is required because at least FreeBSD `ls' do not sort files
with the same timestamp in alphabetical order when using the `-t'
option.
tests defs: allow requirements for compilers (mostly dummy)
Most of the new requirements that are now accepted in `$required'
as consequence of this patch are still dummy. They are planned
to be implemented only in master (or in some derived branch), but
having them here (even just as no-op) will allow for an easier
integration/backporting of potential new testcases.
* tests/defs.in (cc, c++, fortran, fortran77): New requirements,
still dummy.
(flex): New requirement, picking LEX for configure.
(lex): New requirement, alias for `flex'. A more appropriate
implementation, looking for a generic `lex' program, will follow
in the future.
(yacc): New requirement, alias for `bison'. A more appropriate
implementation, looking for a generic `yacc' program, will follow
in the future.
tests: fix spurious failure in a test on TESTS (VPATH-related)
* check-tests-in-builddir.test: When not using the parallel-tests
option, do not check that VPATH components are not present in the
displayed test name, since the simple-tests driver do not try to
strip them.
Jim Meyering [Sun, 16 Jan 2011 14:36:07 +0000 (15:36 +0100)]
test defs: new subroutines for test skipping/failing.
* tests/defs.in (Exit): Move definition of this function earlier.
(warn_, skip_, fail_, framework_failure_): New functions, inspired
to the homonyms in gnulib's tests/init.sh.
($stderr_fileno_): New global variable, used by the new functions
above.
* tests/README: Updated.
* tests/mclean.test: Remove, it's a weak grepping test completely
superseded by the much more complete `maintclean.test'.
* tests/Makefile.am (TESTS): Update.
* tests/defs.in: Sanity check: abort if any of `parallel_tests'
or `required' is in the environment.
($sed_unindent_prog): Initialize to empty, to avoid interferences
from the environment.
* tests/self-check-me-in-env.test: Renamed to ...
* tests/self-check-env-sanitize.test: ... this, and extended.
* tests/Makefile.am (TESTS): Update.
(TESTS_ENVIRONMENT): Unset variables `parallel_tests' and
`required'. Adjust comments.
tests: don't allow `$me' to be overridden from the environment
* tests/defs.in: Sanity check: abort if $me is in the environment.
* tests/self-check-me-in-env.test: New test.
* tests/Makefile.am (TESTS_ENVIRONMENT): Unset variable `me'.
(TESTS): Update.
* tests/depcomp8b.test: Add the `--enable-dependency-tracking'
option to the ./configure invocation, so that slower dependency
extractors are not rejects.
* tests/depcomp8b.test: Likewise. Also ...
(foo.c): ... since we are at it, fix spacing to be consistent
with GNU coding standards.
maintainer check: quote literal `$' in Makefile rule
* Makefile.am (sc_tests_PATH_SEPARATOR): Escape literal `$'
character in double-quoted string. Fix a bug in which the rule
emitted an erroneously empty substring in its error message.
test defs: define default $distdir (help reducing duplication)
* tests/defs.in ($distdir): New variable, might be used in
testcases checking distribution-related features.
* tests/pr9.test: Use it.
* tests/subdir9.test: Likewise.
* tests/vtexi3.test: Add comment explaining why we redefine
$distdir in this test.
depcomp: fix bugs in tests and in the depcomp script
* lib/depcomp (gcc): Remove duplicated `-e' from sed invocation.
* tests/depcomp10.test: Make it executable. Fix a blunder that
has left part of an intended comment not prefixed by `#', thus
causing shell syntax errors. In this same comment, break a
too-long reported error message on multiple lines, for clarity.
Add reference to the relevant bug report. Add a comment which
explains why the test result 'skipped' if the first "make" call
fails. Add other useful comments.
* tests/depcomp9.test: Slightly improve comments.
* lib/depcomp: Be sure to remove VPATH-prefixed object from
dependency output when creating stub rule.
* tests/depcomp10.test: New test.
* tests/Makefile.am (TESTS): Update.
* NEWS: Update.
Report by Bruno Haible.