Use explictly clang-4.0 in osx and linux

Configure default ThinLTO flags for linux
crystal-lang · May 6, 2017 · 83033fc · 83033fc
1 parent 21de891
commit 83033fc
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/src/compiler/crystal/compiler.cr b/src/compiler/crystal/compiler.cr
@@ -300,7 +300,11 @@ module Crystal
           if thin_lto
             lto_cache_dir = "#{output_dir}/lto.cache"
             Dir.mkdir_p(lto_cache_dir)
-            cc = ENV["CC"]? || "clang -flto=thin -Wl,-mllvm,-threads=#{n_threads},-cache_path_lto,#{lto_cache_dir},#{@release ? "-mllvm,-O2" : "-mllvm,-O0"}"
+            {% if flag?(:darwin) %}
+              cc = ENV["CC"]? || "clang-4.0 -flto=thin -Wl,-mllvm,-threads=#{n_threads},-cache_path_lto,#{lto_cache_dir},#{@release ? "-mllvm,-O2" : "-mllvm,-O0"}"
+            {% else %}
+              cc = ENV["CC"]? || "clang-4.0 -flto=thin -Wl,-plugin-opt,jobs=#{n_threads},-plugin-opt,cache-dir=#{lto_cache_dir} #{@release ? "-O2" : "-O0"}"
+            {% end %}
           else
             cc = CC
           end