Since we're only using it on Linux now, just require poppler as a system dependency.

third_party/iconv/config/canonical.h

Index: third_party/iconv/config/canonical.h
diff --git a/third_party/iconv/config/canonical.h b/third_party/iconv/config/canonical.h
deleted file mode 100644
index 550cc64f99bb8c7ce430ebe30bedd4945c80a81e..0000000000000000000000000000000000000000
--- a/third_party/iconv/config/canonical.h
+++ /dev/null
@@ -1,110 +0,0 @@
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str287,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str255,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str179,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str367,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str283,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str263,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str409,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str325,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str242,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str434,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str350,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str252,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str440,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str356,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str575,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str406,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str723,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str448,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str765,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str30,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str600,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str74,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str84,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str78,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str168,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str82,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str76,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str410,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str90,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str98,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str221,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str75,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str79,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str169,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str83,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str77,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str261,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str403,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str480,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str164,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str18,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str28,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str22,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str112,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str26,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str20,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str354,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str34,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str166,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str27,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str19,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str11,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str451,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str531,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str355,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str501,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str673,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str302,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str621,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str577,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str786,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str908,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str563,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str445,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str502,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str475,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str279,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str626,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str614,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str217,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str212,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str218,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str371,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str15,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str230,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str278,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str124,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str180,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str413,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str555,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str571,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str492,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str384,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str368,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str127,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str202,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str535,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str429,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str32,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str607,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str500,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str505,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str70,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str303,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str24,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str378,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str142,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str196,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str159,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str473,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str277,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str170,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str900,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str888,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str935,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str527,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str290,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str91,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str768,
-  (int)(long)&((struct stringpool_t *)0)->stringpool_str362,