Fix GDB build failure when $development is false

We don't build GDB selftests bits when $development is false.  However, if
we turn bfd/development.sh:$development to false, common/selftest.c is
compiled which is not expected.  It causes the build failure,

selftest.o: In function `selftests::run_tests(char const*)':
binutils-gdb/gdb/common/selftest.c:97: undefined reference to `selftests::reset()'
collect2: error: ld returned 1 exit status

I fix this issue by putting selftest.o selftest-arch.o into CONFIG_OBS
only when $development is true.  After this is fixed, there are other
build failures in maint.c, this patch fixes them as well.

In the release mode, the output of these commands are:

(gdb) maintenance selftest
Selftests are not available in a non-development build.
(gdb) maintenance selftest foo
Selftests are not available in a non-development build.
(gdb) maintenance info selftests
Selftests are not available in a non-development build.

gdb:

2018-01-08  Yao Qi  <yao.qi@linaro.org>
	    Simon Marchi  <simon.marchi@ericsson.com>

	* Makefile.in (COMMON_SFILES): Remove selftest-arch.c and
	common/selftest.c.
	(COMMON_OBS): Remove selftest.o.
	* configure.ac: Append selftest-arch.c and common/selftest.c to
	CONFIG_SRCS.  Append selftest-arch.o and selftest.o to COMMON_OBS.
	* configure: Re-generated.
	* maint.c (maintenance_selftest): Wrap selftests::run_tests with
	GDB_SELF_TEST.
	(maintenance_info_selftests): Likewise.

gdb/testsuite:

2018-01-08  Simon Marchi  <simon.marchi@ericsson.com>

	* gdb.gdb/unittest.exp: Match output in non-development mode.

7 files changed, 43 insertions, 8 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index af35cb5..cf93d22 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,16 @@
+2018-01-08  Yao Qi  <yao.qi@linaro.org>
+	    Simon Marchi  <simon.marchi@ericsson.com>
+
+	* Makefile.in (COMMON_SFILES): Remove selftest-arch.c and
+	common/selftest.c.
+	(COMMON_OBS): Remove selftest.o.
+	* configure.ac: Append selftest-arch.c and common/selftest.c to
+	CONFIG_SRCS.  Append selftest-arch.o and selftest.o to COMMON_OBS.
+	* configure: Re-generated.
+	* maint.c (maintenance_selftest): Wrap selftests::run_tests with
+	GDB_SELF_TEST.
+	(maintenance_info_selftests): Likewise.
+
 2018-01-08  Xavier Roirand  <roirand@adacore.com>
 
 	* ada-valprint.c (val_print_packed_array_elements): Use
diff --git a/gdb/Makefile.in b/gdb/Makefile.in
index c0486c4..17b71c6 100644
--- a/gdb/Makefile.in
+++ b/gdb/Makefile.in
@@ -1050,7 +1050,6 @@ COMMON_SFILES = \
 	remote-notif.c \
 	reverse.c \
 	rust-lang.c \
-	selftest-arch.c \
 	sentinel-frame.c \
 	ser-event.c \
 	serial.c \
@@ -1139,7 +1138,6 @@ SFILES = \
 	common/ptid.c \
 	common/rsp-low.c \
 	common/run-time-clock.c \
-	common/selftest.c \
 	common/signals.c \
 	common/signals-state-save-restore.c \
 	common/vec.c \
@@ -1555,7 +1553,6 @@ COMMON_OBS = $(DEPFILES) $(CONFIG_OBS) $(YYOBJ) \
 	ptid.o \
 	rsp-low.o \
 	run-time-clock.o \
-	selftest.o \
 	signals.o \
 	signals-state-save-restore.o \
 	vec.o \
diff --git a/gdb/configure b/gdb/configure
index 7b25007..db610f3 100755
--- a/gdb/configure
+++ b/gdb/configure
@@ -17599,8 +17599,8 @@ if $development; then
 
 $as_echo "#define GDB_SELF_TEST 1" >>confdefs.h
 
-  CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_UNITTESTS_OBS)"
-  CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_UNITTESTS_SRCS)"
+  CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_UNITTESTS_OBS) selftest.o selftest-arch.o"
+  CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_UNITTESTS_SRCS) common/selftest.c selftest-arch.c"
 fi
 
 
diff --git a/gdb/configure.ac b/gdb/configure.ac
index 3e073b5..3db44ae 100644
--- a/gdb/configure.ac
+++ b/gdb/configure.ac
@@ -2293,8 +2293,8 @@ AC_DEFINE(GDB_DEFAULT_HOST_CHARSET, "UTF-8",
 if $development; then
   AC_DEFINE(GDB_SELF_TEST, 1,
             [Define if self-testing features should be enabled])
-  CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_UNITTESTS_OBS)"
-  CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_UNITTESTS_SRCS)"
+  CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_UNITTESTS_OBS) selftest.o selftest-arch.o"
+  CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_UNITTESTS_SRCS) common/selftest.c selftest-arch.c"
 fi
 
 GDB_AC_TRANSFORM([gdb], [GDB_TRANSFORM_NAME])
diff --git a/gdb/maint.c b/gdb/maint.c
index a924f83..70e0011 100644
--- a/gdb/maint.c
+++ b/gdb/maint.c
@@ -939,16 +939,26 @@ show_per_command_cmd (const char *args, int from_tty)
 static void
 maintenance_selftest (const char *args, int from_tty)
 {
+#if GDB_SELF_TEST
   selftests::run_tests (args);
+#else
+  printf_filtered (_("\
+Selftests are not available in a non-development build.\n"));
+#endif
 }
 
 static void
 maintenance_info_selftests (const char *arg, int from_tty)
 {
+#if GDB_SELF_TEST
   printf_filtered ("Registered selftests:\n");
   selftests::for_each_selftest ([] (const std::string &name) {
     printf_filtered (" - %s\n", name.c_str ());
   });
+#else
+  printf_filtered (_("\
+Selftests are not available in a non-development build.\n"));
+#endif
 }
 
 
diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 3a12b0f..c1223db 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2018-01-08  Simon Marchi  <simon.marchi@ericsson.com>
+
+	* gdb.gdb/unittest.exp: Match output in non-development mode.
+
 2018-01-08  Joel Brobecker  <brobecker@adacore.com>
 
 	* gdb.ada/access_tagged_param.exp: Relax expected output
diff --git a/gdb/testsuite/gdb.gdb/unittest.exp b/gdb/testsuite/gdb.gdb/unittest.exp
index 44e9329..1c83585 100644
--- a/gdb/testsuite/gdb.gdb/unittest.exp
+++ b/gdb/testsuite/gdb.gdb/unittest.exp
@@ -16,7 +16,18 @@
 set do_xml_test [expr ![gdb_skip_xml_test]]
 
 gdb_start
-gdb_test "maintenance selftest" "Ran $decimal unit tests, 0 failed"
+
+set test "maintenance selftest"
+gdb_test_multiple $test $test {
+  -re "Ran ($decimal) unit tests, 0 failed\r\n$gdb_prompt $" {
+	set num_ran $expect_out(1,string)
+	gdb_assert "$num_ran > 0" $test
+  }
+
+  -re "Selftests are not available in a non-development build.\r\n$gdb_prompt $" {
+	unsupported $test
+  }
+}
 
 if { ![is_remote host] && $do_xml_test } {
     gdb_test "maintenance check xml-descriptions ${srcdir}/../features" \