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, 3 insertions, 3 deletions

diff --git a/source/slang/slang-stdlib.cpp b/source/slang/slang-stdlib.cpp
index cf45cbca8..3e526e96c 100644
--- a/source/slang/slang-stdlib.cpp
+++ b/source/slang/slang-stdlib.cpp
@@ -248,7 +248,7 @@ namespace Slang
 
 #define EMIT_LINE_DIRECTIVE() sb << "#line " << (__LINE__+1) << " \"" << path << "\"\n"
 
-        #include "core.meta.slang.cpp"
+        #include "core.meta.slang.h"
 
         coreLibraryCode = sb.ProduceString();
         return coreLibraryCode;
@@ -261,7 +261,7 @@ namespace Slang
 
         StringBuilder sb;
 
-        #include "hlsl.meta.slang.cpp"
+        #include "hlsl.meta.slang.h"
 
         hlslLibraryCode = sb.ProduceString();
         return hlslLibraryCode;
@@ -279,7 +279,7 @@ namespace Slang
 
         StringBuilder sb;
 
-        #include "glsl.meta.slang.cpp"
+        #include "glsl.meta.slang.h"
 
         glslLibraryCode = sb.ProduceString();
         return glslLibraryCode;