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Re: [PATCH] Add parameter to allow enabling/disabling selftests via configure
- From: Sergio Durigan Junior < sergiodj at redhat dot com>
- To: GDB Patches <gdb-patches at sourceware dot org>
- Cc: Pedro Alves <palves at redhat dot com>
- Date: Sat, 22 Sep 2018 23:56:31 -0400
- Subject: Re: [PATCH] Add parameter to allow enabling/disabling selftests via configure
- References: <20180814054221.13061-1-sergiodj@redhat.com> <20180917202242.28583-1-sergiodj@redhat.com>
On Monday, September 17 2018, I wrote:
> This is a follow-up of:
>
> https://sourceware.org/ml/gdb-patches/2018-08/msg00347.html
Ping.
> Instead of going throttle and always enabling our selftests (even in
> non-development builds), this patch is a bit more conservative and
> introduces a configure option ("--enable-unit-tests") that allows the
> user to choose whether she wants unit tests in the build or not. Note
> that the current behaviour is retained: if no option is provided, GDB
> will have selftests included in a development build, and will *not*
> have selftests included in a non-development build.
>
> The rationale for having this option is still the same: due to the
> many racy testcases and random failures we see when running the GDB
> testsuite, it is unfortunately not possible to perform a full test
> when one is building a downstream package. As the Fedora GDB
> maintainer and one of the Debian GDB uploaders, I feel like this
> situation could be improved by, at least, executing our selftests
> after the package has been built.
>
> This patch introduces no regressions to our build.
>
> OK?
>
> gdb/ChangeLog:
> 2018-09-17 Sergio Durigan Junior <sergiodj@redhat.com>
>
> * README (`configure' options): Add documentation for new
> "--enable-unit-tests" option.
> * configure: Regenerate.
> * configure.ac: Add "--enable-unit-tests" option.
> * maint.c (maintenance_selftest): Update message informing
> that selftests have been disabled.
> (maintenance_info_selftests): Likewise.
>
> gdb/gdbserver/ChangeLog:
> 2018-09-17 Sergio Durigan Junior <sergiodj@redhat.com>
>
> * configure: Regenerate.
> * configure.ac: Add "--enable-unit-tests" option.
> * configure.srv: Use "$enable_unittests" instead of
> "$development" when checking whether unit tests have been
> enabled.
> * server.c (captured_main): Update message informing that
> selftests have been disabled.
>
> gdb/testsuite/ChangeLog:
> 2018-09-17 Sergio Durigan Junior <sergiodj@redhat.com>
>
> * gdb.gdb/unittest.exp: Update expected message informing that
> selftests have been disabled.
> * gdb.server/unittest.exp: Likewise.
> ---
> gdb/README | 6 ++++++
> gdb/configure | 23 ++++++++++++++++++++++-
> gdb/configure.ac | 17 ++++++++++++++++-
> gdb/gdbserver/configure | 23 ++++++++++++++++++++++-
> gdb/gdbserver/configure.ac | 17 ++++++++++++++++-
> gdb/gdbserver/configure.srv | 2 +-
> gdb/gdbserver/server.c | 2 +-
> gdb/maint.c | 4 ++--
> gdb/testsuite/gdb.gdb/unittest.exp | 2 +-
> gdb/testsuite/gdb.server/unittest.exp | 2 +-
> 10 files changed, 88 insertions(+), 10 deletions(-)
>
> diff --git a/gdb/README b/gdb/README
> index e43887ffcd..e6fe3b183d 100644
> --- a/gdb/README
> +++ b/gdb/README
> @@ -524,6 +524,12 @@ prefer; but you may abbreviate option names if you use `--'.
> after being built, the location of the system-wide init file will
> be adjusted accordingly.
>
> +`--enable-unit-tests[=yes|no]'
> + Enable (i.e., include) support for unit tests when compiling GDB
> + and GDBServer. Note that if this option is not passed, GDB will
> + have selftests if it is a development build, and will *not* have
> + selftests if it a non-development build.
> +
> `configure' accepts other options, for compatibility with configuring
> other GNU tools recursively; but these are the only options that affect
> GDB or its supporting libraries.
> diff --git a/gdb/configure b/gdb/configure
> index d92a256f1f..18e04c0c50 100755
> --- a/gdb/configure
> +++ b/gdb/configure
> @@ -895,6 +895,7 @@ enable_sim
> enable_gdbserver
> with_babeltrace
> with_libbabeltrace_prefix
> +enable_unit_tests
> '
> ac_precious_vars='build_alias
> host_alias
> @@ -1559,6 +1560,8 @@ Optional Features:
> --enable-sim link gdb with simulator
> --enable-gdbserver automatically build gdbserver (yes/no/auto, default
> is auto)
> + --enable-unit-tests Enable the inclusion of unit tests when compiling
> + GDB
>
> Optional Packages:
> --with-PACKAGE[=ARG] use PACKAGE [ARG=yes]
> @@ -17731,7 +17734,25 @@ ac_config_links="$ac_config_links $ac_config_links_1"
> $as_echo "#define GDB_DEFAULT_HOST_CHARSET \"UTF-8\"" >>confdefs.h
>
>
> -if $development; then
> +# Check whether we will enable the inclusion of unit tests when
> +# compiling GDB.
> +#
> +# The default value of this option changes depending whether we're on
> +# development mode (in which case it's "true") or not (in which case
> +# it's "false").
> +# Check whether --enable-unit-tests was given.
> +if test "${enable_unit_tests+set}" = set; then :
> + enableval=$enable_unit_tests; case "${enableval}" in
> + yes) enable_unittests=true ;;
> + no) enable_unittests=false ;;
> + *) as_fn_error $? "bad value ${enableval} for enable unit tests option" "$LINENO" 5 ;;
> +esac
> +else
> + enable_unittests=$development
> +fi
> +
> +
> +if $enable_unittests; then
>
> $as_echo "#define GDB_SELF_TEST 1" >>confdefs.h
>
> diff --git a/gdb/configure.ac b/gdb/configure.ac
> index e38604cb65..3ef43a95f4 100644
> --- a/gdb/configure.ac
> +++ b/gdb/configure.ac
> @@ -2267,7 +2267,22 @@ dnl At the moment, we just assume it's UTF-8.
> AC_DEFINE(GDB_DEFAULT_HOST_CHARSET, "UTF-8",
> [Define to be a string naming the default host character set.])
>
> -if $development; then
> +# Check whether we will enable the inclusion of unit tests when
> +# compiling GDB.
> +#
> +# The default value of this option changes depending whether we're on
> +# development mode (in which case it's "true") or not (in which case
> +# it's "false").
> +AC_ARG_ENABLE(unit-tests,
> +AS_HELP_STRING([--enable-unit-tests],
> +[Enable the inclusion of unit tests when compiling GDB]),
> +[case "${enableval}" in
> + yes) enable_unittests=true ;;
> + no) enable_unittests=false ;;
> + *) AC_MSG_ERROR(bad value ${enableval} for enable unit tests option) ;;
> +esac], [enable_unittests=$development])
> +
> +if $enable_unittests; then
> AC_DEFINE(GDB_SELF_TEST, 1,
> [Define if self-testing features should be enabled])
> CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_UNITTESTS_OBS) common/selftest.o selftest-arch.o"
> diff --git a/gdb/gdbserver/configure b/gdb/gdbserver/configure
> index f5cbbaea78..9915e212d7 100755
> --- a/gdb/gdbserver/configure
> +++ b/gdb/gdbserver/configure
> @@ -722,6 +722,7 @@ enable_option_checking
> enable_maintainer_mode
> enable_largefile
> enable_libmcheck
> +enable_unit_tests
> with_ust
> with_ust_include
> with_ust_lib
> @@ -1367,6 +1368,8 @@ Optional Features:
> sometimes confusing) to the casual installer
> --disable-largefile omit support for large files
> --enable-libmcheck Try linking with -lmcheck if available
> + --enable-unit-tests Enable the inclusion of unit tests when compiling
> + GDB
> --enable-werror treat compile warnings as errors
> --enable-build-warnings enable build-time compiler warnings if gcc is used
> --enable-gdb-build-warnings
> @@ -5889,7 +5892,25 @@ fi
> fi
>
>
> -if $development; then
> +# Check whether we will enable the inclusion of unit tests when
> +# compiling GDB.
> +#
> +# The default value of this option changes depending whether we're on
> +# development mode (in which case it's "true") or not (in which case
> +# it's "false").
> +# Check whether --enable-unit-tests was given.
> +if test "${enable_unit_tests+set}" = set; then :
> + enableval=$enable_unit_tests; case "${enableval}" in
> + yes) enable_unittests=true ;;
> + no) enable_unittests=false ;;
> + *) as_fn_error $? "bad value ${enableval} for enable unit tests option" "$LINENO" 5 ;;
> +esac
> +else
> + enable_unittests=$development
> +fi
> +
> +
> +if $enable_unittests; then
> srv_selftest_objs="common/selftest.o"
>
> $as_echo "#define GDB_SELF_TEST 1" >>confdefs.h
> diff --git a/gdb/gdbserver/configure.ac b/gdb/gdbserver/configure.ac
> index 99bc46221c..3c6ed9143f 100644
> --- a/gdb/gdbserver/configure.ac
> +++ b/gdb/gdbserver/configure.ac
> @@ -54,7 +54,22 @@ else
> fi
> GDB_AC_LIBMCHECK(${libmcheck_default})
>
> -if $development; then
> +# Check whether we will enable the inclusion of unit tests when
> +# compiling GDB.
> +#
> +# The default value of this option changes depending whether we're on
> +# development mode (in which case it's "true") or not (in which case
> +# it's "false").
> +AC_ARG_ENABLE(unit-tests,
> +AS_HELP_STRING([--enable-unit-tests],
> +[Enable the inclusion of unit tests when compiling GDB]),
> +[case "${enableval}" in
> + yes) enable_unittests=true ;;
> + no) enable_unittests=false ;;
> + *) AC_MSG_ERROR(bad value ${enableval} for enable unit tests option) ;;
> +esac], [enable_unittests=$development])
> +
> +if $enable_unittests; then
> srv_selftest_objs="common/selftest.o"
> AC_DEFINE(GDB_SELF_TEST, 1,
> [Define if self-testing features should be enabled])
> diff --git a/gdb/gdbserver/configure.srv b/gdb/gdbserver/configure.srv
> index 72e6a0d87f..636d830f1a 100644
> --- a/gdb/gdbserver/configure.srv
> +++ b/gdb/gdbserver/configure.srv
> @@ -24,7 +24,7 @@
> # Default hostio_last_error implementation
> srv_hostio_err_objs="hostio-errno.o"
>
> -if $development; then
> +if $enable_unittests; then
> srv_i386_linux_regobj="i386-linux.o i386-avx-linux.o i386-avx-avx512-linux.o i386-avx-mpx-avx512-pku-linux.o i386-mpx-linux.o i386-avx-mpx-linux.o i386-mmx-linux.o linux-x86-tdesc-selftest.o"
> srv_amd64_linux_regobj="amd64-linux.o amd64-avx-linux.o amd64-avx-avx512-linux.o amd64-avx-mpx-avx512-pku-linux.o amd64-mpx-linux.o amd64-avx-mpx-linux.o x32-linux.o x32-avx-linux.o x32-avx-avx512-linux.o"
> else
> diff --git a/gdb/gdbserver/server.c b/gdb/gdbserver/server.c
> index a491ae0257..f2f0d569ab 100644
> --- a/gdb/gdbserver/server.c
> +++ b/gdb/gdbserver/server.c
> @@ -3790,7 +3790,7 @@ captured_main (int argc, char *argv[])
> #if GDB_SELF_TEST
> selftests::run_tests (selftest_filter);
> #else
> - printf (_("Selftests are not available in a non-development build.\n"));
> + printf (_("Selftests have been disabled for this build.\n"));
> #endif
> throw_quit ("Quit");
> }
> diff --git a/gdb/maint.c b/gdb/maint.c
> index 19db8a850b..01a80f5d73 100644
> --- a/gdb/maint.c
> +++ b/gdb/maint.c
> @@ -943,7 +943,7 @@ maintenance_selftest (const char *args, int from_tty)
> selftests::run_tests (args);
> #else
> printf_filtered (_("\
> -Selftests are not available in a non-development build.\n"));
> +Selftests have been disabled for this build.\n"));
> #endif
> }
>
> @@ -957,7 +957,7 @@ maintenance_info_selftests (const char *arg, int from_tty)
> });
> #else
> printf_filtered (_("\
> -Selftests are not available in a non-development build.\n"));
> +Selftests have been disabled for this build.\n"));
> #endif
> }
>
> diff --git a/gdb/testsuite/gdb.gdb/unittest.exp b/gdb/testsuite/gdb.gdb/unittest.exp
> index 1c835850b8..8e3e9a1761 100644
> --- a/gdb/testsuite/gdb.gdb/unittest.exp
> +++ b/gdb/testsuite/gdb.gdb/unittest.exp
> @@ -24,7 +24,7 @@ gdb_test_multiple $test $test {
> gdb_assert "$num_ran > 0" $test
> }
>
> - -re "Selftests are not available in a non-development build.\r\n$gdb_prompt $" {
> + -re "Selftests have been disabled for this build.\r\n$gdb_prompt $" {
> unsupported $test
> }
> }
> diff --git a/gdb/testsuite/gdb.server/unittest.exp b/gdb/testsuite/gdb.server/unittest.exp
> index e947ff2c30..b0a7c6ae56 100644
> --- a/gdb/testsuite/gdb.server/unittest.exp
> +++ b/gdb/testsuite/gdb.server/unittest.exp
> @@ -38,7 +38,7 @@ gdb_expect {
> gdb_assert "$num_ran > 0" $test
> }
>
> - -re "Selftests are not available in a non-development build.\r\n$" {
> + -re "Selftests have been disabled for this build.\r\n$" {
> unsupported $test
> }
>
> --
> 2.17.1
--
Sergio
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