Callable CPU code support (#1014)

* First pass support for compiling to a loaded shared library.

* Improve documentation for cpu target.

* Removed the SLANG_COMPILE_FLAG_LOAD_SHARED_LIBRARY flag.
Use the SLANG_HOST_CALLABLE code target
Document mechanism.

* Fix typo in cpp-resource.slang
In test code if the target is 'callable' we don't need to compile (indeed there is no source file).

* Small refactor using CommandLineCPPCompiler as base class to implement VisualStudioCPPCompiler and GCCCPPCompiler.

* Improvements around CPPCompiler.
Mechanism to know products produced.
Cleaning up products after execution.

* Fix multiple definition of 'SourceType'

1 files changed, 16 insertions, 1 deletions

diff --git a/source/core/slang-shared-library.cpp b/source/core/slang-shared-library.cpp
index 9932db0b5..fd61ba0a0 100644
--- a/source/core/slang-shared-library.cpp
+++ b/source/core/slang-shared-library.cpp
@@ -56,6 +56,18 @@ SlangResult DefaultSharedLibraryLoader::loadSharedLibrary(const char* path, ISla
 
 /* !!!!!!!!!!!!!!!!!!!!!!!!!! DefaultSharedLibrary !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!*/
 
+TemporarySharedLibrary::~TemporarySharedLibrary()
+{
+    if (m_sharedLibraryHandle)
+    {
+        // We have to unload if we want to be able to remove
+        SharedLibrary::unload(m_sharedLibraryHandle);
+        m_sharedLibraryHandle = nullptr;
+    }
+}
+
+/* !!!!!!!!!!!!!!!!!!!!!!!!!! DefaultSharedLibrary !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!*/
+
 ISlangUnknown* DefaultSharedLibrary::getInterface(const Guid& guid)
 {
     return (guid == IID_ISlangUnknown || guid == IID_ISlangSharedLibrary) ? static_cast<ISlangSharedLibrary*>(this) : nullptr;
@@ -63,7 +75,10 @@ ISlangUnknown* DefaultSharedLibrary::getInterface(const Guid& guid)
 
 DefaultSharedLibrary::~DefaultSharedLibrary()
 {
-    SharedLibrary::unload(m_sharedLibraryHandle);
+    if (m_sharedLibraryHandle)
+    {
+        SharedLibrary::unload(m_sharedLibraryHandle);
+    }
 }
 
 SlangFuncPtr DefaultSharedLibrary::findFuncByName(char const* name)