From a174c7d79db664b9a8946f7ceb9e88a9fcd97919 Mon Sep 17 00:00:00 2001
From: Vladislav Rassokhin <vladislav.rassokhin@jetbrains.com>
Date: Mon, 23 May 2022 22:21:53 +0200
Subject: [PATCH] [platform] fsnotifier build for Linux: pass version to
 make.sh, check glibc compatibility

GitOrigin-RevId: 3b7df9f562d44ebd31c88e33657b78b009de48c6
---
 native/fsNotifier/linux/fsnotifier.h |  6 ++++--
 native/fsNotifier/linux/make.sh      | 21 ++++++++++++++++++---
 2 files changed, 22 insertions(+), 5 deletions(-)

diff --git a/native/fsNotifier/linux/fsnotifier.h b/native/fsNotifier/linux/fsnotifier.h
index 30f1aec053c5..d5fec6261ac3 100644
--- a/native/fsNotifier/linux/fsnotifier.h
+++ b/native/fsNotifier/linux/fsnotifier.h
@@ -1,8 +1,10 @@
-// Copyright 2000-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2022 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 
 #pragma once
 
-#define VERSION "20210419.1140"
+#ifndef VERSION
+#define VERSION "SNAPSHOT"
+#endif
 
 #define _DEFAULT_SOURCE
 #define _FILE_OFFSET_BITS 64
diff --git a/native/fsNotifier/linux/make.sh b/native/fsNotifier/linux/make.sh
index 38e9c262c678..a349548beafc 100755
--- a/native/fsNotifier/linux/make.sh
+++ b/native/fsNotifier/linux/make.sh
@@ -1,14 +1,29 @@
 #!/bin/bash
 set -euo pipefail
 
-VER=$(date "+%Y%m%d.%H%M")
-sed -i.bak "s/#define VERSION .*/#define VERSION \"${VER}\"/" fsnotifier.h && rm fsnotifier.h.bak
+VER="${1:-}"
+if [ -z "${VER:-}" ]; then
+  VER=$(date "+%Y%m%d.%H%M")
+fi
+
 ARCH=$(uname -m)
 
+# To make sure it's compatible with old Linux distributions, e.g. CentOS 7
+max_allowed_glibc_version="2.17"
+
 build_fsnotifier() {
   [ -f "$1" ] && rm "$1"
-  ${CC:-clang} -O2 -Wall -Wextra -Wpedantic -std=c11 main.c inotify.c util.c -o "$1"
+  ${CC:-clang} -O2 -Wall -Wextra -Wpedantic -D "VERSION=\"$VER\"" -std=c11 main.c inotify.c util.c -o "$1"
   chmod 755 "$1"
+  echo "Checking $1 for glibc version compatibility..."
+  glibc_version="$(objdump -x "$1" | grep -o "GLIBC_.*" | sort | uniq | cut -d _ -f 2 | sort -V | tail -n 1)"
+  newest=$(printf "%s\n%s\n" "$max_allowed_glibc_version" "$glibc_version" | sort -V | tail -n 1)
+  if [ "$newest" != "$max_allowed_glibc_version" ]; then
+    echo "ERROR: $1 uses glibc version $glibc_version which is newer than $max_allowed_glibc_version"
+    exit 1
+  else
+    echo "OK: $1 uses glibc version $glibc_version"
+  fi
 }
 
 if [ "$ARCH" = "x86_64" ] || [ "$ARCH" = "amd64" ]; then