Do not depend on or try to configure pangocairo when use_pango == 0

build/linux/system.gyp

Index: build/linux/system.gyp
diff --git a/build/linux/system.gyp b/build/linux/system.gyp
index 09ee713634dec18e4cb2b8d842b66d7715ce6d81..9079011122c4f8948cb4db49e790976a52b7649f 100644
--- a/build/linux/system.gyp
+++ b/build/linux/system.gyp
@@ -1110,34 +1110,38 @@
       'type': 'none',
       'toolsets': ['host', 'target'],
       'conditions': [
-        ['_toolset=="target"', {
-          'direct_dependent_settings': {
-            'cflags': [
-              '<!@(<(pkg-config) --cflags pangocairo pangoft2)',
-            ],
-          },
-          'link_settings': {
-            'ldflags': [
-              '<!@(<(pkg-config) --libs-only-L --libs-only-other pangocairo pangoft2)',
-            ],
-            'libraries': [
-              '<!@(<(pkg-config) --libs-only-l pangocairo pangoft2)',
-            ],
-          },
-        }, {
-          'direct_dependent_settings': {
-            'cflags': [
-              '<!@(pkg-config --cflags pangocairo pangoft2)',
-            ],
-          },
-          'link_settings': {
-            'ldflags': [
-              '<!@(pkg-config --libs-only-L --libs-only-other pangocairo pangoft2)',
-            ],
-            'libraries': [
-              '<!@(pkg-config --libs-only-l pangocairo pangoft2)',
-            ],
-          },
+        ['use_pango==1 and use_cairo==1', {
+          'conditions': [
+            ['_toolset=="target"', {
+              'direct_dependent_settings': {
+                'cflags': [
+                  '<!@(<(pkg-config) --cflags pangocairo pangoft2)',
+                ],
+              },
+              'link_settings': {
+                'ldflags': [
+                  '<!@(<(pkg-config) --libs-only-L --libs-only-other pangocairo pangoft2)',
+                ],
+                'libraries': [
+                  '<!@(<(pkg-config) --libs-only-l pangocairo pangoft2)',
+                ],
+              },
+            }, {
+              'direct_dependent_settings': {
+                'cflags': [
+                  '<!@(pkg-config --cflags pangocairo pangoft2)',
+                ],
+              },
+              'link_settings': {
+                'ldflags': [
+                  '<!@(pkg-config --libs-only-L --libs-only-other pangocairo pangoft2)',
+                ],
+                'libraries': [
+                  '<!@(pkg-config --libs-only-l pangocairo pangoft2)',
+                ],
+              },
+            }],
+          ],
         }],
       ],
     },