From d598bde7173c37962db5a454ef934d06dca910a5 Mon Sep 17 00:00:00 2001
From: Jason Volk <jason@zemos.net>
Date: Sat, 1 Jun 2019 22:22:44 -0700
Subject: [PATCH] ircd::info: Get the glibc linked ABI version.

---
 configure.ac | 1 +
 ircd/info.cc | 5 ++++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 181df415e..bd310396f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -774,6 +774,7 @@ RB_CHK_SYSHEADER(sys/syscall.h, [SYS_SYSCALL_H])
 RB_CHK_SYSHEADER(sys/utsname.h, [SYS_UTSNAME_H])
 RB_CHK_SYSHEADER(sys/ioctl.h, [SYS_IOCTL_H])
 RB_CHK_SYSHEADER(sys/mman.h, [SYS_MMAN_H])
+RB_CHK_SYSHEADER(gnu/libc-version.h, [GNU_LIBC_VERSION_H])
 
 dnl linux platform
 RB_CHK_SYSHEADER(sys/auxv.h, [SYS_AUXV_H])
diff --git a/ircd/info.cc b/ircd/info.cc
index ec880f647..8aa7397ba 100644
--- a/ircd/info.cc
+++ b/ircd/info.cc
@@ -11,6 +11,7 @@
 #include <RB_INC_SYS_RESOURCE_H
 #include <RB_INC_UNISTD_H
 #include <RB_INC_CPUID_H
+#include <RB_INC_GNU_LIBC_VERSION_H
 
 decltype(ircd::info::credits)
 ircd::info::credits
@@ -344,11 +345,13 @@ ircd::info::glibc_version_api
 	}
 };
 
+#ifdef HAVE_GNU_LIBC_VERSION_H
 decltype(ircd::info::glibc_version_abi)
 ircd::info::glibc_version_abi
 {
-	"glibc", versions::ABI, 0, {0}, "<unknown>" //TODO: get this.
+	"glibc", versions::ABI, 0, {0}, ::gnu_get_libc_version()
 };
+#endif HAVE_GNU_LIBC_VERSION_H
 
 #endif defined(__GNU_LIBRARY__) && defined(__GLIBC__) && defined(__GLIBC_MINOR__)