https://bugzilla.redhat.com/show_bug.cgi?id=1161338 There's this bug report, which suggests using '-arch x86_64' on Macs. Otherwise one gets unclear error messages when building. Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com&gt; --- Rakefile | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Rakefile b/Rakefile index 5ea1f41..e73eaee 100644 --- a/Rakefile +++ b/Rakefile @@ -148,6 +148,10 @@ SPEC = Gem::Specification.new do |s| s.license = "LGPLv2" end +if RUBY_PLATFORM =~ /universal.x86_64-darwin/ + ENV['ARCHFLAGS'] = '-arch x86_64' +end + Gem::PackageTask.new(SPEC) do |pkg| pkg.need_tar = true pkg.need_zip = true -- 2.0.5