+
+/* Search for FNAME in sub-frameworks. pname is the context that we
+ wish to search in. Return the path the file was found at,
+ otherwise return 0. */
+
+static const char*
+find_subframework_file (const char *fname, const char *pname)
+{
+ char *sfrname;
+ const char *dot_framework = ".framework/";
+ char *bufptr;
+ int sfrname_len, i, fname_len;
+ struct cpp_dir *fast_dir;
+ static struct cpp_dir subframe_dir;
+ struct stat st;
+
+ bufptr = strchr (fname, '/');
+
+ /* Subframework files must have / in the name. */
+ if (bufptr == 0)
+ return 0;
+
+ fname_len = bufptr - fname;
+ fast_dir = find_framework (fname, fname_len);
+
+ /* Sub framework header filename includes parent framework name and
+ header name in the "CarbonCore/OSUtils.h" form. If it does not
+ include slash it is not a sub framework include. */
+ bufptr = strstr (pname, dot_framework);
+
+ /* If the parent header is not of any framework, then this header
+ cannot be part of any subframework. */
+ if (!bufptr)
+ return 0;
+
+ /* Now translate. For example, +- bufptr
+ fname = CarbonCore/OSUtils.h |
+ pname = /System/Library/Frameworks/Foundation.framework/Headers/Foundation.h
+ into
+ sfrname = /System/Library/Frameworks/Foundation.framework/Frameworks/CarbonCore.framework/Headers/OSUtils.h */
+
+ sfrname = XNEWVEC (char, strlen (pname) + strlen (fname) + 2 +
+ strlen ("Frameworks/") + strlen (".framework/")
+ + strlen ("PrivateHeaders"));
+
+ bufptr += strlen (dot_framework);
+
+ sfrname_len = bufptr - pname;
+
+ strncpy (&sfrname[0], pname, sfrname_len);
+
+ strncpy (&sfrname[sfrname_len], "Frameworks/", strlen ("Frameworks/"));
+ sfrname_len += strlen("Frameworks/");
+
+ strncpy (&sfrname[sfrname_len], fname, fname_len);
+ sfrname_len += fname_len;
+
+ strncpy (&sfrname[sfrname_len], ".framework/", strlen (".framework/"));
+ sfrname_len += strlen (".framework/");
+
+ /* Append framework_header_dirs and header file name */
+ for (i = 0; framework_header_dirs[i].dirName; i++)
+ {
+ strncpy (&sfrname[sfrname_len],
+ framework_header_dirs[i].dirName,
+ framework_header_dirs[i].dirNameLen);
+ strcpy (&sfrname[sfrname_len + framework_header_dirs[i].dirNameLen],
+ &fname[fname_len]);
+
+ if (stat (sfrname, &st) == 0)
+ {
+ if (fast_dir != &subframe_dir)
+ {
+ if (fast_dir)
+ warning (0, "subframework include %s conflicts with framework include",
+ fname);
+ else
+ add_framework (fname, fname_len, &subframe_dir);
+ }
+
+ return sfrname;
+ }
+ }
+ free (sfrname);
+
+ return 0;
+}
+
+/* Add PATH to the system includes. PATH must be malloc-ed and
+ NUL-terminated. System framework paths are C++ aware. */
+
+static void
+add_system_framework_path (char *path)
+{
+ int cxx_aware = 1;
+ cpp_dir *p;
+
+ p = XNEW (cpp_dir);
+ p->next = NULL;
+ p->name = path;
+ p->sysp = 1 + !cxx_aware;
+ p->construct = framework_construct_pathname;
+ using_frameworks = 1;
+
+ add_cpp_dir_path (p, SYSTEM);
+}
+
+/* Add PATH to the bracket includes. PATH must be malloc-ed and
+ NUL-terminated. */
+
+void
+add_framework_path (char *path)
+{
+ cpp_dir *p;
+
+ p = XNEW (cpp_dir);
+ p->next = NULL;
+ p->name = path;
+ p->sysp = 0;
+ p->construct = framework_construct_pathname;
+ using_frameworks = 1;
+
+ add_cpp_dir_path (p, BRACKET);
+}
+
+static const char *framework_defaults [] =
+ {
+ "/System/Library/Frameworks",
+ "/Library/Frameworks",
+ };
+
+/* Register the GNU objective-C runtime include path if STDINC. */
+
+void
+darwin_register_objc_includes (const char *sysroot, const char *iprefix,
+ int stdinc)
+{
+ const char *fname;
+ size_t len;
+ /* We do not do anything if we do not want the standard includes. */
+ if (!stdinc)
+ return;
+
+ fname = GCC_INCLUDE_DIR "-gnu-runtime";
+
+ /* Register the GNU OBJC runtime include path if we are compiling OBJC
+ with GNU-runtime. */
+
+ if (c_dialect_objc () && !flag_next_runtime)
+ {
+ char *str;
+ /* See if our directory starts with the standard prefix.
+ "Translate" them, i.e. replace /usr/local/lib/gcc... with
+ IPREFIX and search them first. */
+ if (iprefix && (len = cpp_GCC_INCLUDE_DIR_len) != 0 && !sysroot
+ && !strncmp (fname, cpp_GCC_INCLUDE_DIR, len))
+ {
+ str = concat (iprefix, fname + len, NULL);
+ /* FIXME: wrap the headers for C++awareness. */
+ add_path (str, SYSTEM, /*c++aware=*/false, false);
+ }
+
+ /* Should this directory start with the sysroot? */
+ if (sysroot)
+ str = concat (sysroot, fname, NULL);
+ else
+ str = update_path (fname, "");
+
+ add_path (str, SYSTEM, /*c++aware=*/false, false);
+ }
+}
+
+
+/* Register all the system framework paths if STDINC is true and setup
+ the missing_header callback for subframework searching if any
+ frameworks had been registered. */
+
+void
+darwin_register_frameworks (const char *sysroot,
+ const char *iprefix ATTRIBUTE_UNUSED, int stdinc)
+{
+ if (stdinc)
+ {
+ size_t i;
+
+ /* Setup default search path for frameworks. */
+ for (i=0; i<sizeof (framework_defaults)/sizeof(const char *); ++i)
+ {
+ char *str;
+ if (sysroot)
+ str = concat (sysroot, xstrdup (framework_defaults [i]), NULL);
+ else
+ str = xstrdup (framework_defaults[i]);
+ /* System Framework headers are cxx aware. */
+ add_system_framework_path (str);
+ }
+ }
+
+ if (using_frameworks)
+ cpp_get_callbacks (parse_in)->missing_header = find_subframework_header;
+}
+
+/* Search for HEADER in context dependent way. The return value is
+ the malloced name of a header to try and open, if any, or NULL
+ otherwise. This is called after normal header lookup processing
+ fails to find a header. We search each file in the include stack,
+ using FUNC, starting from the most deeply nested include and
+ finishing with the main input file. We stop searching when FUNC
+ returns nonzero. */
+
+static const char*
+find_subframework_header (cpp_reader *pfile, const char *header, cpp_dir **dirp)
+{
+ const char *fname = header;
+ struct cpp_buffer *b;
+ const char *n;
+
+ for (b = cpp_get_buffer (pfile);
+ b && cpp_get_file (b) && cpp_get_path (cpp_get_file (b));
+ b = cpp_get_prev (b))
+ {
+ n = find_subframework_file (fname, cpp_get_path (cpp_get_file (b)));
+ if (n)
+ {
+ /* Logically, the place where we found the subframework is
+ the place where we found the Framework that contains the
+ subframework. This is useful for tracking wether or not
+ we are in a system header. */
+ *dirp = cpp_get_dir (cpp_get_file (b));
+ return n;
+ }
+ }
+
+ return 0;
+}
+
+/* Return the value of darwin_macosx_version_min suitable for the
+ __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ macro,
+ so '10.4.2' becomes 1040. The lowest digit is always zero.
+ Print a warning if the version number can't be understood. */
+static const char *
+version_as_macro (void)
+{
+ static char result[] = "1000";
+
+ if (strncmp (darwin_macosx_version_min, "10.", 3) != 0)
+ goto fail;
+ if (! ISDIGIT (darwin_macosx_version_min[3]))
+ goto fail;
+ result[2] = darwin_macosx_version_min[3];
+ if (darwin_macosx_version_min[4] != '\0'
+ && darwin_macosx_version_min[4] != '.')
+ goto fail;
+
+ return result;
+
+ fail:
+ error ("Unknown value %qs of -mmacosx-version-min",
+ darwin_macosx_version_min);
+ return "1000";
+}
+
+/* Define additional CPP flags for Darwin. */
+
+#define builtin_define(TXT) cpp_define (pfile, TXT)
+
+void
+darwin_cpp_builtins (cpp_reader *pfile)
+{
+ builtin_define ("__MACH__");
+ builtin_define ("__APPLE__");
+
+ /* __APPLE_CC__ is defined as some old Apple include files expect it
+ to be defined and won't work if it isn't. */
+ builtin_define_with_value ("__APPLE_CC__", "1", false);
+
+ builtin_define_with_value ("__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__",
+ version_as_macro(), false);
+}
+
+/* Handle C family front-end options. */
+
+static bool
+handle_c_option (size_t code,
+ const char *arg,
+ int value ATTRIBUTE_UNUSED)
+{
+ switch (code)
+ {
+ default:
+ /* Unrecognized options that we said we'd handle turn into
+ errors if not listed here. */
+ return false;
+
+ case OPT_iframework:
+ add_system_framework_path (xstrdup (arg));
+ break;
+
+ case OPT_fapple_kext:
+ ;
+ }
+
+ /* We recognized the option. */
+ return true;
+}
+
+#undef TARGET_HANDLE_C_OPTION
+#define TARGET_HANDLE_C_OPTION handle_c_option
+
+struct gcc_targetcm targetcm = TARGETCM_INITIALIZER;