Allow cross platform installation by --libc flag

lovell · May 5, 2021 · 73a248a · 73a248a
1 parent 070534d
commit 73a248a
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Showing 2 changed files with 5 additions and 2 deletions.
diff --git a/docs/install.md b/docs/install.md
@@ -54,6 +54,8 @@ When using npm v6 or earlier, the `npm install --unsafe-perm` flag must be used
 
 When using npm v7, the user running `npm install` must own the directory it is run in.
 
+When installing cross platform prebuilts on linux libc check can be overwritten by `--libc` flag, eg. `npm --arch=arm64 --libc= install`.
+
 The `npm install --ignore-scripts=false` flag must be used when `npm` has been configured to ignore installation scripts.
 
 Check the output of running `npm install --verbose sharp` for useful error messages.

diff --git a/install/libvips.js b/install/libvips.js
@@ -87,6 +87,7 @@ try {
     // Is this arch/platform supported?
     const arch = process.env.npm_config_arch || process.arch;
     const platformAndArch = platform();
+    const libcFamily = typeof process.env.npm_config_libc !== 'undefined' ? process.env.npm_config_libc : detectLibc.family;
     if (arch === 'ia32' && !platformAndArch.startsWith('win32')) {
       throw new Error(`Intel Architecture 32-bit systems require manual installation of libvips >= ${minimumLibvipsVersion}`);
     }
@@ -96,12 +97,12 @@ try {
     if (platformAndArch === 'freebsd-x64' || platformAndArch === 'openbsd-x64' || platformAndArch === 'sunos-x64') {
       throw new Error(`BSD/SunOS systems require manual installation of libvips >= ${minimumLibvipsVersion}`);
     }
-    if (detectLibc.family === detectLibc.GLIBC && detectLibc.version) {
+    if (libcFamily === detectLibc.GLIBC && detectLibc.version) {
       if (semverLessThan(`${detectLibc.version}.0`, `${minimumGlibcVersionByArch[arch]}.0`)) {
         throw new Error(`Use with glibc ${detectLibc.version} requires manual installation of libvips >= ${minimumLibvipsVersion}`);
       }
     }
-    if (detectLibc.family === detectLibc.MUSL && detectLibc.version) {
+    if (libcFamily === detectLibc.MUSL && detectLibc.version) {
       if (semverLessThan(detectLibc.version, '1.1.24')) {
         throw new Error(`Use with musl ${detectLibc.version} requires manual installation of libvips >= ${minimumLibvipsVersion}`);
       }