From 90abd927c9521024970c5e10bc1585ba1f68c530 Mon Sep 17 00:00:00 2001
From: Lovell Fuller <github@lovell.info>
Date: Sun, 23 Apr 2023 11:54:41 +0100
Subject: [PATCH] Install: coerce libc version to semver (refactor)

---
 install/libvips.js | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/install/libvips.js b/install/libvips.js
index 493c79672..339f22284 100644
--- a/install/libvips.js
+++ b/install/libvips.js
@@ -140,17 +140,19 @@ try {
       throw new Error(`BSD/SunOS systems require manual installation of libvips >= ${minimumLibvipsVersion}`);
     }
     // Linux libc version check
-    const libcFamily = detectLibc.familySync();
     const libcVersionRaw = detectLibc.versionSync();
-    const libcVersion = semverCoerce(libcVersionRaw).version;
-    if (libcFamily === detectLibc.GLIBC && libcVersion && minimumGlibcVersionByArch[arch]) {
-      if (semverLessThan(libcVersion, semverCoerce(minimumGlibcVersionByArch[arch]).version)) {
-        handleError(new Error(`Use with glibc ${libcVersionRaw} requires manual installation of libvips >= ${minimumLibvipsVersion}`));
+    if (libcVersionRaw) {
+      const libcFamily = detectLibc.familySync();
+      const libcVersion = semverCoerce(libcVersionRaw).version;
+      if (libcFamily === detectLibc.GLIBC && minimumGlibcVersionByArch[arch]) {
+        if (semverLessThan(libcVersion, semverCoerce(minimumGlibcVersionByArch[arch]).version)) {
+          handleError(new Error(`Use with glibc ${libcVersionRaw} requires manual installation of libvips >= ${minimumLibvipsVersion}`));
+        }
       }
-    }
-    if (libcFamily === detectLibc.MUSL && libcVersion) {
-      if (semverLessThan(libcVersion, '1.1.24')) {
-        handleError(new Error(`Use with musl ${libcVersionRaw} requires manual installation of libvips >= ${minimumLibvipsVersion}`));
+      if (libcFamily === detectLibc.MUSL) {
+        if (semverLessThan(libcVersion, '1.1.24')) {
+          handleError(new Error(`Use with musl ${libcVersionRaw} requires manual installation of libvips >= ${minimumLibvipsVersion}`));
+        }
       }
     }
     // Node.js minimum version check