GH-41396: [Ruby] Add workaround for re2.pc on Ubuntu 20.04 (#43721)

### Rationale for this change Old re2.pc add "-std=c++11" but it causes a build error. Because Apache Arrow C++ requires C++17. ### What changes are included in this PR? Remove "-std=c++11" as workaround. We can remove this workaround when we drop support for Ubuntu 20.04. ### Are these changes tested? Yes. ### Are there any user-facing changes? Yes. * GitHub Issue: #41396 Authored-by: Sutou Kouhei <[email protected]> Signed-off-by: Sutou Kouhei <[email protected]>
apache · Aug 16, 2024 · e9767c1 · e9767c1
1 parent a970fd7
commit e9767c1
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/ruby/red-arrow/ext/arrow/extconf.rb b/ruby/red-arrow/ext/arrow/extconf.rb
@@ -66,6 +66,13 @@
   exit(false)
 end
 
+# Old re2.pc (e.g. re2.pc on Ubuntu 20.04) may add -std=c++11. It
+# causes a build error because Apache Arrow C++ requires C++17 or
+# later.
+#
+# We can remove this when we drop support for Ubuntu 20.04.
+$CXXFLAGS.gsub!("-std=c++11", "")
+
 [
   ["glib2", "ext/glib2"],
 ].each do |name, relative_source_dir|