From 3f90e9a8a0b8e17c017f97463d256079649e8535 Mon Sep 17 00:00:00 2001
From: Sergey Bugaev <bugaevc@serenityos.org>
Date: Sun, 3 Sep 2023 21:59:06 +0300
Subject: [PATCH] AK: Add AK_LIBC_GLIBC

This is defined when we're compiling against the GNU C Library, whether
on Linux or on other kernels that glibc works on. More AK_LIBC_xxxx
definitions could be potentially added in the future.

Also add AK_LIBC_GLIBC_PREREQ(), which checks for a specific glibc
version.
---
 AK/Platform.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/AK/Platform.h b/AK/Platform.h
index 23fa7d28a2..0de3cfe8fd 100644
--- a/AK/Platform.h
+++ b/AK/Platform.h
@@ -47,6 +47,13 @@
 #    define AK_COMPILER_GCC
 #endif
 
+#if defined(__GLIBC__)
+#    define AK_LIBC_GLIBC
+#    define AK_LIBC_GLIBC_PREREQ(maj, min) __GLIBC_PREREQ((maj), (min))
+#else
+#    define AK_LIBC_GLIBC_PREREQ(maj, min) 0
+#endif
+
 #if defined(__serenity__)
 #    define AK_OS_SERENITY
 #endif