I started to create the initial version of the embedding interface.

.clang_complete

@@ -1,4 +1,5 @@
 -Iplatforms/Cross/vm
+-include
 -Isrc/vm
 -Iminheadless/include
 -Iminheadless/source

CMakeLists.txt

@@ -306,6 +306,7 @@ endif()
 # Add the current directory.
 include_directories(
 	.
+	"${PROJECT_SOURCE_DIR}/include"
 	"${PROJECT_SOURCE_DIR}/platforms/Cross/vm"
 	"${SourceFolderName}/vm"
 )
@@ -414,6 +415,7 @@ set(VM_PLATFORM_SOURCES
 	minheadless/source/sqWindow-Null.c
 	minheadless/source/sqWindow-Dispatch.c
 	minheadless/source/sqInternalPrimitives.c
+	minheadless/source/sqVirtualMachineInterface.c
 )
 
 if(UNIX)
@@ -514,6 +516,10 @@ set(VM_CORE_LIBRARY_TYPE STATIC)
 #    set(VM_CORE_LIBRARY_TYPE SHARED)
 #endif()
 
+if("${VM_CORE_LIBRARY_TYPE}" STREQUAL "STATIC")
+	add_definitions(-DBUILD_SQUEAK_STATIC)
+endif()
+
 add_library(${VM_LIBRARY_NAME} ${VM_CORE_LIBRARY_TYPE} ${VM_SOURCES} ${VM_INTERNAL_PLUGIN_SOURCES})
 add_dependencies(${VM_LIBRARY_NAME} sqGitVersionString)
 
@@ -527,6 +533,6 @@ add_executable(${VM_EXECUTABLE_NAME} minheadless/source/sqMain.c)
 target_link_libraries(${VM_EXECUTABLE_NAME} ${VM_LIBRARY_NAME} ${VM_DEPENDENCIES_LIBRARIES})
 
 if(WIN32)
-    add_executable(${VM_EXECUTABLE_NAME}w WIN32 minheadless/source/sqMain.c minheadless/source/sqWin32Main.c)
+    add_executable(${VM_EXECUTABLE_NAME}w WIN32 minheadless/source/sqWin32Main.c)
     target_link_libraries(${VM_EXECUTABLE_NAME}w ${VM_LIBRARY_NAME} ${VM_DEPENDENCIES_LIBRARIES})
 endif()

include/SqueakVirtualMachine.h

@@ -0,0 +1,148 @@
+/* SqueakVirtualMachine.h -- platform-specific modifications to sq.h
+ *
+ *   Copyright (C) 2016 by Ronie Salgado and other authors/contributors
+ *                              listed elsewhere in this file.
+ *   All rights reserved.
+ *
+ *   Permission is hereby granted, free of charge, to any person obtaining a
+ *   copy of this software and associated documentation files (the "Software"),
+ *   to deal in the Software without restriction, including without limitation
+ *   the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ *   and/or sell copies of the Software, and to permit persons to whom the
+ *   Software is furnished to do so, subject to the following conditions:
+ *
+ *   The above copyright notice and this permission notice shall be included in
+ *   all copies or substantial portions of the Software.
+ *
+ *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ *   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ *   DEALINGS IN THE SOFTWARE.
+ *
+ * Author: ian.piumarta@squeakland.org
+ *
+ */
+
+/**
+ * Squeak virtual machine public embedding interface.
+ */
+
+#ifndef SQUEAK_VIRTUAL_MACHINE_H
+#define SQUEAK_VIRTUAL_MACHINE_H
+
+#include <stdint.h>
+
+#ifdef _WIN32
+#   ifdef BUILD_SQUEAK_STATIC
+#       define SQUEAK_VM_EXPORT
+#       define SQUEAK_VM_IMPORT
+#   else
+#       define SQUEAK_VM_EXPORT __declspec(dllexport)
+#       define SQUEAK_VM_IMPORT __declspec(dllimport)
+#   endif
+#else
+#   define SQUEAK_VM_EXPORT
+#   define SQUEAK_VM_IMPORT
+#endif
+
+#ifdef BUILD_VM_CORE
+#   define SQUEAK_VM_CORE_PUBLIC SQUEAK_VM_EXPORT
+#else
+#   define SQUEAK_VM_CORE_PUBLIC SQUEAK_VM_IMPORT
+#endif
+
+#define SQUEAK_VM_CORE_VERSION(major, minor, revision) ((major)*1000 + (minor)*10 + (revision))
+#define SQUEAK_VM_CORE_COMPILED_VERSION SQUEAK_VM_CORE_VERSION(0, 1, 0)
+
+typedef intptr_t squeakInt;
+typedef uintptr_t squeakUInt;
+
+/**/
+typedef enum
+{
+    SQUEAK_SUCCESS = 0,
+    SQUEAK_ERROR,
+    SQUEAK_ERROR_INVALID_PARAMETER,
+    SQUEAK_ERROR_NOT_YET_IMPLEMENTED,
+    SQUEAK_ERROR_OUT_OF_BOUNDS,
+    SQUEAK_ERROR_OUT_OF_MEMORY,
+    SQUEAK_ERROR_UNSUPPORTED_OPERATION,
+    SQUEAK_ERROR_UNSUPPORTED_PARAMETER,
+    SQUEAK_ERROR_FAILED_TO_OPEN_FILE,
+    SQUEAK_ERROR_FAILED_TO_LOAD_IMAGE,
+} SqueakError;
+
+/**
+ * Get the virtual machine embedding interface version
+ */
+SQUEAK_VM_CORE_PUBLIC int squeak_getInterfaceVersion(void);
+
+/**
+ * Simple all mighty main entry point for running a Squeak VM.
+ */
+SQUEAK_VM_CORE_PUBLIC SqueakError squeak_main(int argc, const char **argv);
+
+/**
+ * Global initialization of Squeak
+ */
+SQUEAK_VM_CORE_PUBLIC SqueakError squeak_initialize(void);
+
+/**
+ * Global shutting down of Squeak VM
+ */
+SQUEAK_VM_CORE_PUBLIC SqueakError squeak_shutdown(void);
+
+/**
+ * Initialize the Squeak VM
+ */
+SQUEAK_VM_CORE_PUBLIC SqueakError squeak_initializeVM(void);
+
+/**
+ * Shutdown the Squeak VM
+ */
+SQUEAK_VM_CORE_PUBLIC SqueakError squeak_shutdownVM(void);
+
+/**
+ * Parse command line arguments
+ */
+SQUEAK_VM_CORE_PUBLIC SqueakError squeak_parseCommandLineArguments(int argc, const char **argv);
+
+/**
+ * Parse the VM command line arguments
+ */
+SQUEAK_VM_CORE_PUBLIC SqueakError squeak_parseVMCommandLineArguments(int argc, const char **argv);
+
+/**
+ * Set a string VM parameter
+ */
+SQUEAK_VM_CORE_PUBLIC SqueakError squeak_setVMStringParameter(const char *name, const char *value);
+
+/**
+ * Set an integer VM parameter
+ */
+SQUEAK_VM_CORE_PUBLIC SqueakError squeak_setVMIntegerParameter(const char *name, const char *value);
+
+/**
+ * Pass the image command line arguments
+ */
+SQUEAK_VM_CORE_PUBLIC SqueakError squeak_passImageCommandLineArguments(int argc, const char **argv);
+
+/**
+ * Load the image
+ */
+SQUEAK_VM_CORE_PUBLIC SqueakError squeak_loadImage(const char *fileName);
+
+/**
+ * Load the default image or the one provided on the command line
+ */
+SQUEAK_VM_CORE_PUBLIC SqueakError squeak_loadDefaultImage(void);
+
+/**
+ * Run indefinetely the previously loaded image.
+ */
+SQUEAK_VM_CORE_PUBLIC SqueakError squeak_run(void);
+
+#endif /* SQUEAK_VIRTUAL_MACHINE_H */