Move cc build system module to separate library

1 files changed, 73 insertions, 0 deletions

diff --git a/libbuild2/cc/utility.ixx b/libbuild2/cc/utility.ixx
new file mode 100644
index 0000000..1509bf2
--- /dev/null
+++ b/libbuild2/cc/utility.ixx
@@ -0,0 +1,73 @@
+// file      : libbuild2/cc/utility.ixx -*- C++ -*-
+// copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+namespace build2
+{
+  namespace cc
+  {
+    inline otype
+    compile_type (const target& t, unit_type u)
+    {
+      using namespace bin;
+
+      auto test = [&t, u] (const auto& h, const auto& i, const auto& o)
+      {
+        return t.is_a (u == unit_type::module_header ? h :
+                       u == unit_type::module_iface  ? i :
+                       o);
+      };
+
+      return
+        test (hbmie::static_type, bmie::static_type, obje::static_type) ? otype::e :
+        test (hbmia::static_type, bmia::static_type, obja::static_type) ? otype::a :
+        otype::s;
+    }
+
+    inline ltype
+    link_type (const target& t)
+    {
+      using namespace bin;
+
+      bool u (false);
+      otype o (
+        t.is_a<exe>  () || (u = t.is_a<libue> ()) ? otype::e :
+        t.is_a<liba> () || (u = t.is_a<libua> ()) ? otype::a :
+        t.is_a<libs> () || (u = t.is_a<libus> ()) ? otype::s :
+        static_cast<otype> (0xFF));
+
+      return ltype {o, u};
+    }
+
+    inline compile_target_types
+    compile_types (otype t)
+    {
+      using namespace bin;
+
+      const target_type* o (nullptr);
+      const target_type* i (nullptr);
+      const target_type* h (nullptr);
+
+      switch (t)
+      {
+      case otype::e:
+        o = &obje::static_type;
+        i = &bmie::static_type;
+        h = &hbmie::static_type;
+        break;
+      case otype::a:
+        o = &obja::static_type;
+        i = &bmia::static_type;
+        h = &hbmia::static_type;
+        break;
+      case otype::s:
+        o = &objs::static_type;
+        i = &bmis::static_type;
+        h = &hbmis::static_type;
+        break;
+      }
+
+      return compile_target_types {*o, *i, *h};
+    }
+  }
+}