support/testing/infra/basetest.py: use Bootlin toolchain stable 2022.08-1

This patch updates the default toolchain used for runtime tests. The
last time this toolchain was updated was in commit
0207a65323 3 years ago. Since then,
multiple things have changed:

Firstly, it used uclibc-ng as the libc whereas since commit
4057e36ca9, glibc is used as the default
library.

And secondly, since commit 531b2a10cd, buildroot
dropped the support for gcc 8 and it cannot be built internally anymore.
So the testsuite was executed using a toolchain that can't be built by
the Buildroot internal toolchain backend anymore.

This new Bootlin toolchain stable 2022.08-1 is based on gcc 11.3.0,
linux headers 4.9.327, glibc 2.35 and binutils 2.38.

The previous toolchain bleeding edge 2018.11-1 is based on gcc 8.2.0,
linux headers 4.14.80, uclibc 1.0.30 and binutils 2.31.1

Nowadays Bootlin toolchains are packaged in Buildroot and we can
directly select them from BASIC_TOOLCHAIN_CONFIG and avoid
setting the toolchain parameters (BR2_TOOLCHAIN_EXTERNAL_CUSTOM...).

The switch to Glibc requires to update some tests for the following
reasons:

- TestPython3Py, TestPython3Pyc and TestPython3PyPyc has been updated
  since they use the libc binary file name in their test
  (uClibc: libc.so.1 vs Glibc: libc.so.6).

- TestTmux needs at least one locale to pass (as stated in tmux help
  text "tmux needs a working UTF-8 locale"), so use "C.UTF-8".

- TestOpenSsh needs a toolchain >= 5.x due to a openssh issue
  (Similar to: https://bugs.busybox.net/show_bug.cgi?id=13671)
  Use the Bootlin toolchain bleeding-edge 2022.08-1 rhat provide
  kernel headers 5.4

- TestShadow needs a toolchain >= 4.14
  Use the Bootlin toolchain bleeding-edge 2022.08-1 rhat provide
  kernel headers 5.4

Runtime tested on the gcc farm server.

Signed-off-by: Sebastian Weyer <sebastian.weyer@smile.fr>
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

support/testing/infra/basetest.py

@@ -9,14 +9,8 @@ BASIC_TOOLCHAIN_CONFIG = \
     """
     BR2_arm=y
     BR2_TOOLCHAIN_EXTERNAL=y
-    BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
-    BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
-    BR2_TOOLCHAIN_EXTERNAL_URL="https://toolchains.bootlin.com/downloads/releases/toolchains/armv5-eabi/tarballs/armv5-eabi--uclibc--bleeding-edge-2018.11-1.tar.bz2"
-    BR2_TOOLCHAIN_EXTERNAL_GCC_8=y
-    BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_14=y
-    BR2_TOOLCHAIN_EXTERNAL_LOCALE=y
-    BR2_TOOLCHAIN_HAS_THREADS_DEBUG=y
-    BR2_TOOLCHAIN_EXTERNAL_CXX=y
+    BR2_TOOLCHAIN_EXTERNAL_BOOTLIN=y
+    BR2_TOOLCHAIN_EXTERNAL_BOOTLIN_ARMV5_EABI_GLIBC_STABLE=y
     """
 
 MINIMAL_CONFIG = \

support/testing/tests/package/test_openssh.py

@@ -32,9 +32,13 @@ class TestOpensshBase(infra.basetest.BRTest):
 
 
 class TestOpenSshuClibc(TestOpensshBase):
-    config = infra.basetest.BASIC_TOOLCHAIN_CONFIG + \
+    config = \
         TestOpensshBase.opensshconfig + \
         """
+        BR2_arm=y
+        BR2_TOOLCHAIN_EXTERNAL=y
+        BR2_TOOLCHAIN_EXTERNAL_BOOTLIN=y
+        BR2_TOOLCHAIN_EXTERNAL_BOOTLIN_ARMV5_EABI_UCLIBC_STABLE=y
         BR2_TARGET_ROOTFS_CPIO=y
         """
 
@@ -43,12 +47,14 @@ class TestOpenSshuClibc(TestOpensshBase):
 
 
 class TestOpenSshGlibc(TestOpensshBase):
+
     config = \
         TestOpensshBase.opensshconfig + \
         """
         BR2_arm=y
         BR2_TOOLCHAIN_EXTERNAL=y
         BR2_TOOLCHAIN_EXTERNAL_BOOTLIN=y
+        BR2_TOOLCHAIN_EXTERNAL_BOOTLIN_ARMV5_EABI_GLIBC_BLEEDING_EDGE=y
         BR2_PACKAGE_RNG_TOOLS=y
         BR2_TARGET_ROOTFS_CPIO=y
         """

support/testing/tests/package/test_python.py

@@ -29,7 +29,7 @@ class TestPythonBase(infra.basetest.BRTest):
     def libc_time_test(self, timeout=-1):
         cmd = self.interpreter + " -c '"
         cmd += "import ctypes;"
-        cmd += "libc = ctypes.cdll.LoadLibrary(\"libc.so.1\");"
+        cmd += "libc = ctypes.cdll.LoadLibrary(\"libc.so.6\");"
         cmd += "print(libc.time(None))'"
         self.assertRunOk(cmd, timeout)
 

support/testing/tests/package/test_shadow.py

@@ -5,9 +5,14 @@ from infra.basetest import BRTest, BASIC_TOOLCHAIN_CONFIG
 
 class TestShadow(BRTest):
     username = 'user_test'
-    config = BASIC_TOOLCHAIN_CONFIG + \
+    # Need to use a different toolchain than the default due to
+    # shadow package requiring a toolchain w/ headers >= 4.14
+    config = \
         """
         BR2_arm=y
+        BR2_TOOLCHAIN_EXTERNAL=y
+        BR2_TOOLCHAIN_EXTERNAL_BOOTLIN=y
+        BR2_TOOLCHAIN_EXTERNAL_BOOTLIN_ARMV5_EABI_GLIBC_BLEEDING_EDGE=y
         BR2_PACKAGE_SHADOW=y
         BR2_TARGET_ROOTFS_EXT2=y
         BR2_TARGET_ROOTFS_EXT2_4=y

support/testing/tests/package/test_tmux.py

@@ -9,6 +9,7 @@ class TestTmux(infra.basetest.BRTest):
         BR2_PACKAGE_TMUX=y
         BR2_TARGET_ROOTFS_CPIO=y
         # BR2_TARGET_ROOTFS_TAR is not set
+        BR2_GENERATE_LOCALE="C.UTF-8"
         """
 
     def test_run(self):