Mock up of the software. Fully generated with Gemini 3.8 as a proof of concept.

vendor/llvm/include/clang-c/BuildSystem.h

@@ -0,0 +1,153 @@
+/*==-- clang-c/BuildSystem.h - Utilities for use by build systems -*- C -*-===*\
+|*                                                                            *|
+|* Part of the LLVM Project, under the Apache License v2.0 with LLVM          *|
+|* Exceptions.                                                                *|
+|* See https://llvm.org/LICENSE.txt for license information.                  *|
+|* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception                    *|
+|*                                                                            *|
+|*===----------------------------------------------------------------------===*|
+|*                                                                            *|
+|* This header provides various utilities for use by build systems.           *|
+|*                                                                            *|
+\*===----------------------------------------------------------------------===*/
+
+#ifndef LLVM_CLANG_C_BUILDSYSTEM_H
+#define LLVM_CLANG_C_BUILDSYSTEM_H
+
+#include "clang-c/CXErrorCode.h"
+#include "clang-c/CXString.h"
+#include "clang-c/ExternC.h"
+#include "clang-c/Platform.h"
+
+LLVM_CLANG_C_EXTERN_C_BEGIN
+
+/**
+ * \defgroup BUILD_SYSTEM Build system utilities
+ * @{
+ */
+
+/**
+ * Return the timestamp for use with Clang's
+ * \c -fbuild-session-timestamp= option.
+ */
+CINDEX_LINKAGE unsigned long long clang_getBuildSessionTimestamp(void);
+
+/**
+ * Object encapsulating information about overlaying virtual
+ * file/directories over the real file system.
+ */
+typedef struct CXVirtualFileOverlayImpl *CXVirtualFileOverlay;
+
+/**
+ * Create a \c CXVirtualFileOverlay object.
+ * Must be disposed with \c clang_VirtualFileOverlay_dispose().
+ *
+ * \param options is reserved, always pass 0.
+ */
+CINDEX_LINKAGE CXVirtualFileOverlay
+clang_VirtualFileOverlay_create(unsigned options);
+
+/**
+ * Map an absolute virtual file path to an absolute real one.
+ * The virtual path must be canonicalized (not contain "."/"..").
+ * \returns 0 for success, non-zero to indicate an error.
+ */
+CINDEX_LINKAGE enum CXErrorCode
+clang_VirtualFileOverlay_addFileMapping(CXVirtualFileOverlay,
+                                        const char *virtualPath,
+                                        const char *realPath);
+
+/**
+ * Set the case sensitivity for the \c CXVirtualFileOverlay object.
+ * The \c CXVirtualFileOverlay object is case-sensitive by default, this
+ * option can be used to override the default.
+ * \returns 0 for success, non-zero to indicate an error.
+ */
+CINDEX_LINKAGE enum CXErrorCode
+clang_VirtualFileOverlay_setCaseSensitivity(CXVirtualFileOverlay,
+                                            int caseSensitive);
+
+/**
+ * Write out the \c CXVirtualFileOverlay object to a char buffer.
+ *
+ * \param options is reserved, always pass 0.
+ * \param out_buffer_ptr pointer to receive the buffer pointer, which should be
+ * disposed using \c clang_free().
+ * \param out_buffer_size pointer to receive the buffer size.
+ * \returns 0 for success, non-zero to indicate an error.
+ */
+CINDEX_LINKAGE enum CXErrorCode
+clang_VirtualFileOverlay_writeToBuffer(CXVirtualFileOverlay, unsigned options,
+                                       char **out_buffer_ptr,
+                                       unsigned *out_buffer_size);
+
+/**
+ * free memory allocated by libclang, such as the buffer returned by
+ * \c CXVirtualFileOverlay() or \c clang_ModuleMapDescriptor_writeToBuffer().
+ *
+ * \param buffer memory pointer to free.
+ */
+CINDEX_LINKAGE void clang_free(void *buffer);
+
+/**
+ * Dispose a \c CXVirtualFileOverlay object.
+ */
+CINDEX_LINKAGE void clang_VirtualFileOverlay_dispose(CXVirtualFileOverlay);
+
+/**
+ * Object encapsulating information about a module.modulemap file.
+ */
+typedef struct CXModuleMapDescriptorImpl *CXModuleMapDescriptor;
+
+/**
+ * Create a \c CXModuleMapDescriptor object.
+ * Must be disposed with \c clang_ModuleMapDescriptor_dispose().
+ *
+ * \param options is reserved, always pass 0.
+ */
+CINDEX_LINKAGE CXModuleMapDescriptor
+clang_ModuleMapDescriptor_create(unsigned options);
+
+/**
+ * Sets the framework module name that the module.modulemap describes.
+ * \returns 0 for success, non-zero to indicate an error.
+ */
+CINDEX_LINKAGE enum CXErrorCode
+clang_ModuleMapDescriptor_setFrameworkModuleName(CXModuleMapDescriptor,
+                                                 const char *name);
+
+/**
+ * Sets the umbrella header name that the module.modulemap describes.
+ * \returns 0 for success, non-zero to indicate an error.
+ */
+CINDEX_LINKAGE enum CXErrorCode
+clang_ModuleMapDescriptor_setUmbrellaHeader(CXModuleMapDescriptor,
+                                            const char *name);
+
+/**
+ * Write out the \c CXModuleMapDescriptor object to a char buffer.
+ *
+ * \param options is reserved, always pass 0.
+ * \param out_buffer_ptr pointer to receive the buffer pointer, which should be
+ * disposed using \c clang_free().
+ * \param out_buffer_size pointer to receive the buffer size.
+ * \returns 0 for success, non-zero to indicate an error.
+ */
+CINDEX_LINKAGE enum CXErrorCode
+clang_ModuleMapDescriptor_writeToBuffer(CXModuleMapDescriptor, unsigned options,
+                                       char **out_buffer_ptr,
+                                       unsigned *out_buffer_size);
+
+/**
+ * Dispose a \c CXModuleMapDescriptor object.
+ */
+CINDEX_LINKAGE void clang_ModuleMapDescriptor_dispose(CXModuleMapDescriptor);
+
+/**
+ * @}
+ */
+
+LLVM_CLANG_C_EXTERN_C_END
+
+#endif /* CLANG_C_BUILD_SYSTEM_H */
+