support: Introduce new subdirectory for test infrastructure

The new test driver in <support/test-driver.c> has feature parity with
the old one.  The main difference is that its hooking mechanism is
based on functions and function pointers instead of macros.  This
commit also implements a new environment variable, TEST_COREDUMPS,
which disables the code which disables coredumps (that is, it enables
them if the invocation environment has not disabled them).

<test-skeleton.c> defines wrapper functions so that it is possible to
use existing macros with the new-style hook functionality.

This commit changes only a few test cases to the new test driver, to
make sure that it works as expected.

1 files changed, 64 insertions, 0 deletions

diff --git a/support/Makefile b/support/Makefile
new file mode 100644
index 0000000000..bd425afc2b
--- /dev/null
+++ b/support/Makefile
@@ -0,0 +1,64 @@
+# Makefile for support library, used only at build and test time
+# Copyright (C) 2016 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+
+# The GNU C Library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+
+# The GNU C Library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+
+# You should have received a copy of the GNU Lesser General Public
+# License along with the GNU C Library; if not, see
+# <http://www.gnu.org/licenses/>.
+
+subdir := support
+
+include ../Makeconfig
+
+extra-libs := libsupport
+extra-libs-others = $(extra-libs)
+extra-libs-noinstall := $(extra-libs)
+
+libsupport-routines = \
+  check \
+  delayed_exit \
+  ignore_stderr \
+  oom_error \
+  set_fortify_handler \
+  support_test_main \
+  temp_file \
+  write_message \
+  xasprintf \
+  xcalloc \
+  xmalloc \
+  xpthread_barrier_destroy \
+  xpthread_barrier_init \
+  xpthread_barrier_wait \
+  xpthread_cancel \
+  xpthread_check_return \
+  xpthread_cond_wait \
+  xpthread_create \
+  xpthread_detach \
+  xpthread_join \
+  xpthread_mutex_lock \
+  xpthread_mutex_unlock \
+  xpthread_sigmask \
+  xpthread_spin_lock \
+  xpthread_spin_unlock \
+  xrealloc \
+
+libsupport-static-only-routines := $(libsupport-routines)
+# Only build one variant of the library.
+libsupport-inhibit-o := .os
+ifeq ($(build-shared),yes)
+libsupport-inhibit-o += .o
+endif
+
+tests = README-testing
+
+include ../Rules