From 954cb38135ce0db6f4ae9174ba7bc028753f996b Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Tue, 12 Jul 2022 16:09:50 +0530
Subject: [PATCH] Linux installer: Fix glibc version check also being done when
 installing older versions

---
 setup/linux-installer.py | 15 ++++++++-------
 setup/linux-installer.sh | 15 ++++++++-------
 2 files changed, 16 insertions(+), 14 deletions(-)

diff --git a/setup/linux-installer.py b/setup/linux-installer.py
index f1eb28f023..04ec818c5a 100644
--- a/setup/linux-installer.py
+++ b/setup/linux-installer.py
@@ -681,12 +681,6 @@ def download_and_extract(destdir, version):
     extract_tarball(raw, destdir)
 
 
-def check_version():
-    global calibre_version
-    if calibre_version == '%version':
-        calibre_version = urlopen('http://code.calibre-ebook.com/latest').read()
-
-
 def run_installer(install_dir, isolated, bin_dir, share_dir, version):
     destdir = os.path.abspath(os.path.expanduser(install_dir or '/opt'))
     if destdir == '/usr/bin':
@@ -774,7 +768,14 @@ def main(install_dir=None, isolated=False, bin_dir=None, share_dir=None, ignore_
             'You are running on a 32-bit system. The calibre binaries are only'
             ' available for 64-bit systems. You will have to compile from'
             ' source.')
-    check_glibc_version()
+    glibc_versions = {
+        (6, 0, 0) : {'min_required': (2, 31), 'release_date': '2020-02-01'}
+    }
+    q = tuple(map(int, version.split('.'))) if version else (999999999999, 99, 99)
+    for key in sorted(glibc_versions, reverse=True):
+        if q >= key:
+            check_glibc_version(**glibc_versions[key])
+            break
     run_installer(install_dir, isolated, bin_dir, share_dir, version)
 
 
diff --git a/setup/linux-installer.sh b/setup/linux-installer.sh
index 9ae58b7f5c..09a4c74dae 100644
--- a/setup/linux-installer.sh
+++ b/setup/linux-installer.sh
@@ -730,12 +730,6 @@ def download_and_extract(destdir, version):
     extract_tarball(raw, destdir)
 
 
-def check_version():
-    global calibre_version
-    if calibre_version == '%version':
-        calibre_version = urlopen('http://code.calibre-ebook.com/latest').read()
-
-
 def run_installer(install_dir, isolated, bin_dir, share_dir, version):
     destdir = os.path.abspath(os.path.expanduser(install_dir or '/opt'))
     if destdir == '/usr/bin':
@@ -823,7 +817,14 @@ def main(install_dir=None, isolated=False, bin_dir=None, share_dir=None, ignore_
             'You are running on a 32-bit system. The calibre binaries are only'
             ' available for 64-bit systems. You will have to compile from'
             ' source.')
-    check_glibc_version()
+    glibc_versions = {
+        (6, 0, 0) : {'min_required': (2, 31), 'release_date': '2020-02-01'}
+    }
+    q = tuple(map(int, version.split('.'))) if version else (999999999999, 99, 99)
+    for key in sorted(glibc_versions, reverse=True):
+        if q >= key:
+            check_glibc_version(**glibc_versions[key])
+            break
     run_installer(install_dir, isolated, bin_dir, share_dir, version)