guix: use glibc 2.27 for all Linux builds

Also point to the latest commit on the glibc 2.27 releases branch.

https://sourceware.org/git/?p=glibc.git;a=shortlog;h=refs/heads/release/2.27/master

2 files changed, 11 insertions, 36 deletions

diff --git a/contrib/devtools/symbol-check.py b/contrib/devtools/symbol-check.py
index 4b1cceb57c..f26236dd59 100755
--- a/contrib/devtools/symbol-check.py
+++ b/contrib/devtools/symbol-check.py
@@ -15,19 +15,19 @@ from typing import List, Dict
 
 import lief #type:ignore
 
-# Debian 9 (Stretch) EOL: 2022. https://wiki.debian.org/DebianReleases#Production_Releases
+# Debian 10 (Buster) EOL: 2024. https://wiki.debian.org/LTS
 #
-# - g++ version 6.3.0 (https://packages.debian.org/search?suite=stretch&arch=any&searchon=names&keywords=g%2B%2B)
-# - libc version 2.24 (https://packages.debian.org/search?suite=stretch&arch=any&searchon=names&keywords=libc6)
+# - libgcc version 8.3.0 (https://packages.debian.org/search?suite=buster&arch=any&searchon=names&keywords=libgcc1)
+# - libc version 2.28 (https://packages.debian.org/search?suite=buster&arch=any&searchon=names&keywords=libc6)
 #
-# Ubuntu 16.04 (Xenial) EOL: 2026. https://wiki.ubuntu.com/Releases
+# Ubuntu 18.04 (Bionic) EOL: 2028. https://wiki.ubuntu.com/ReleaseTeam
 #
-# - g++ version 5.3.1
-# - libc version 2.23
+# - libgcc version 8.4.0 (https://packages.ubuntu.com/bionic/libgcc1)
+# - libc version 2.27 (https://packages.ubuntu.com/bionic/libc6)
 #
 # CentOS Stream 8 EOL: 2024. https://wiki.centos.org/About/Product
 #
-# - g++ version 8.5.0 (http://mirror.centos.org/centos/8-stream/AppStream/x86_64/os/Packages/)
+# - libgcc version 8.5.0 (http://mirror.centos.org/centos/8-stream/AppStream/x86_64/os/Packages/)
 # - libc version 2.28 (http://mirror.centos.org/centos/8-stream/AppStream/x86_64/os/Packages/)
 #
 # See https://gcc.gnu.org/onlinedocs/libstdc++/manual/abi.html for more info.
@@ -35,10 +35,10 @@ import lief #type:ignore
 MAX_VERSIONS = {
 'GCC':       (4,8,0),
 'GLIBC': {
-    lief.ELF.ARCH.x86_64: (2,18),
-    lief.ELF.ARCH.ARM:    (2,18),
-    lief.ELF.ARCH.AARCH64:(2,18),
-    lief.ELF.ARCH.PPC64:  (2,18),
+    lief.ELF.ARCH.x86_64: (2,27),
+    lief.ELF.ARCH.ARM:    (2,27),
+    lief.ELF.ARCH.AARCH64:(2,27),
+    lief.ELF.ARCH.PPC64:  (2,27),
     lief.ELF.ARCH.RISCV:  (2,27),
 },
 'LIBATOMIC': (1,0),
diff --git a/contrib/devtools/test-symbol-check.py b/contrib/devtools/test-symbol-check.py
index de73b02090..e304880140 100755
--- a/contrib/devtools/test-symbol-check.py
+++ b/contrib/devtools/test-symbol-check.py
@@ -38,31 +38,6 @@ class TestSymbolChecks(unittest.TestCase):
         executable = 'test1'
         cc = determine_wellknown_cmd('CC', 'gcc')
 
-        # there's no way to do this test for RISC-V at the moment; we build for
-        # RISC-V in a glibc 2.27 environment and we allow all symbols from 2.27.
-        if 'riscv' in get_machine(cc):
-            self.skipTest("test not available for RISC-V")
-
-        # nextup was introduced in GLIBC 2.24, so is newer than our supported
-        # glibc (2.18), and available in our release build environment (2.24).
-        with open(source, 'w', encoding="utf8") as f:
-            f.write('''
-                #define _GNU_SOURCE
-                #include <math.h>
-
-                double nextup(double x);
-
-                int main()
-                {
-                    nextup(3.14);
-                    return 0;
-                }
-        ''')
-
-        self.assertEqual(call_symbol_check(cc, source, executable, ['-lm']),
-                (1, executable + ': symbol nextup from unsupported version GLIBC_2.24(3)\n' +
-                    executable + ': failed IMPORTED_SYMBOLS'))
-
         # -lutil is part of the libc6 package so a safe bet that it's installed
         # it's also out of context enough that it's unlikely to ever become a real dependency
         source = 'test2.c'