First attempt at a Linux build (#193)

* First attempt at a Linux build

- Fix up places where C++ idioms were written assuming lenient behavior of Microsoft's compiler

- Add a few more alternatives for platform-specific behavior where Windows was the only platform accounted for.

- Add a basic Makefile that can at least invoke our build, even if it isn't going good dependency tracking, etc.

- Build `libslang.so` and `slangc` that depends on it, using a relative `RPATH` to make the binary portable (I hope)

- Add an initial `.travis.yml` to see if we can trigger their build process.

* Fixup: const bug in `List::Sort`

I'm not clear why this gets picked up by the gcc *and* clang that Travis uses, but not the (newer) gcc I'm using on Ubuntu here, but I'm hoping it is just some missing `const` qualifiers.

* Fixup: reorder specialization of "class info"

Clang complains about things being specialized after being instantiated (implicilty), and I hope it is just the fact that I generate the class info for the roots of the hierarchy after the other cases. We'll see.

* Fixup: add `platform.cpp` to unified/lumped build

* Fixup: Windows uses `FreeLibrary`

and not `UnloadLibrary`

* Fixup: fix Windows project file to include new source file

This obviously points to the fact that we are going to need to be generating these files sooner or later.

1 files changed, 5 insertions, 4 deletions

diff --git a/source/slang/lower-to-ir.cpp b/source/slang/lower-to-ir.cpp
index 464d5d50a..06ad66bc4 100644
--- a/source/slang/lower-to-ir.cpp
+++ b/source/slang/lower-to-ir.cpp
@@ -836,7 +836,7 @@ struct ValLoweringVisitor : ValVisitor<ValLoweringVisitor, LoweredValInfo, Lower
 
     LoweredTypeInfo visitBasicExpressionType(BasicExpressionType* type)
     {
-        return getBuilder()->getBaseType(type->BaseType);
+        return getBuilder()->getBaseType(type->baseType);
     }
 
     LoweredTypeInfo visitVectorExpressionType(VectorExpressionType* type)
@@ -876,7 +876,7 @@ struct ValLoweringVisitor : ValVisitor<ValLoweringVisitor, LoweredValInfo, Lower
 
     LoweredTypeInfo visitArrayExpressionType(ArrayExpressionType* type)
     {
-        auto loweredElementType = lowerType(context, type->BaseType);
+        auto loweredElementType = lowerType(context, type->baseType);
         if (auto elementCount = type->ArrayLength)
         {
             auto irElementCount = lowerSimpleVal(context, elementCount);
@@ -984,7 +984,7 @@ struct ExprLoweringVisitorBase : ExprVisitor<Derived, LoweredValInfo>
     // as the visitor itself.
     LoweredValInfo lowerSubExpr(Expr* expr)
     {
-        return dispatch(expr);
+        return this->dispatch(expr);
     }
 
 
@@ -2306,7 +2306,8 @@ struct DeclLoweringVisitor : DeclVisitor<DeclLoweringVisitor, LoweredValInfo>
     template<typename D>
     DeclRef<D> createDefaultSpecializedDeclRef(D* decl)
     {
-        return createDefaultSpecializedDeclRefImpl(decl).As<D>();
+        DeclRef<Decl> declRef = createDefaultSpecializedDeclRefImpl(decl);
+        return declRef.As<D>();
     }