diff --git a/.gitignore b/.gitignore
index 861375899..8b070030f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,22 @@ xcuserdata
 .stack-work
 semantic-diff-profile.*
 tags
+
+vendor/icu/tools
+vendor/icu/lib
+vendor/icu/layoutex
+vendor/icu/layout
+vendor/icu/i18n
+vendor/icu/test/
+vendor/icu/stubdata/
+vendor/icu/samples/
+vendor/icu/io/
+vendor/icu/icudefs.mk
+vendor/icu/extra/
+vendor/icu/data/
+vendor/icu/config/
+vendor/icu/config.status
+vendor/icu/config.log
+vendor/icu/common/
+vendor/icu/bin/
+vendor/icu/Makefile
diff --git a/semantic-diff.cabal b/semantic-diff.cabal
index b42dd35cf..a712f59cb 100644
--- a/semantic-diff.cabal
+++ b/semantic-diff.cabal
@@ -65,6 +65,7 @@ executable semantic-diff-exe
                      , text-icu
   default-language:    Haskell2010
   default-extensions:  OverloadedStrings
+  extra-libraries: stdc++
 
 executable semantic-diff-profile
   hs-source-dirs:      app
@@ -87,6 +88,7 @@ executable semantic-diff-profile
                      , text-icu
   default-extensions:  OverloadedStrings
   default-language:    Haskell2010
+  extra-libraries: stdc++
 
 test-suite semantic-diff-test
   type:                exitcode-stdio-1.0