Build: use brew --prefix to get brew package config path (#4505)

Author: dsherret

lib/libvips.js

@@ -145,17 +145,24 @@ const globalLibvipsVersion = () => {
   }
 };
 
+const getBrewPkgConfigPath = () => {
+  try {
+    const brewPrefix = (spawnSync('brew', ['--prefix'], { encoding: 'utf8' }).stdout || '').trim();
+    if (brewPrefix) {
+      return `${brewPrefix}/lib/pkgconfig`;
+    }
+  } catch (_err) {
+    // ignore
+  }
+  return undefined;
+};
+
 /* node:coverage enable */
 
 const pkgConfigPath = () => {
   if (process.platform !== 'win32') {
-    /* node:coverage ignore next 4 */
-    const brewPkgConfigPath = spawnSync(
-      'which brew >/dev/null 2>&1 && brew environment --plain | grep PKG_CONFIG_LIBDIR | cut -d" " -f2',
-      spawnSyncOptions
-    ).stdout || '';
     return [
-      brewPkgConfigPath.trim(),
+      getBrewPkgConfigPath(),
       process.env.PKG_CONFIG_PATH,
       '/usr/local/lib/pkgconfig',
       '/usr/lib/pkgconfig',