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-rw-r--r--gcc-4.9/gcc/cp/g++spec.c405
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diff --git a/gcc-4.9/gcc/cp/g++spec.c b/gcc-4.9/gcc/cp/g++spec.c
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+/* Specific flags and argument handling of the C++ front end.
+ Copyright (C) 1996-2014 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "gcc.h"
+#include "opts.h"
+
+/* This bit is set if we saw a `-xfoo' language specification. */
+#define LANGSPEC (1<<1)
+/* This bit is set if they did `-lm' or `-lmath'. */
+#define MATHLIB (1<<2)
+/* This bit is set if they did `-lrt' or equivalent. */
+#define TIMELIB (1<<3)
+/* This bit is set if they did `-lc'. */
+#define WITHLIBC (1<<4)
+/* Skip this option. */
+#define SKIPOPT (1<<5)
+
+#ifndef MATH_LIBRARY
+#define MATH_LIBRARY "m"
+#endif
+#ifndef MATH_LIBRARY_PROFILE
+#define MATH_LIBRARY_PROFILE MATH_LIBRARY
+#endif
+
+#ifndef TIME_LIBRARY
+#define TIME_LIBRARY ""
+#endif
+
+#ifndef LIBSTDCXX
+#define LIBSTDCXX "stdc++"
+#endif
+#ifndef LIBSTDCXX_PROFILE
+#define LIBSTDCXX_PROFILE LIBSTDCXX
+#endif
+#ifndef LIBSTDCXX_STATIC
+#define LIBSTDCXX_STATIC NULL
+#endif
+
+void
+lang_specific_driver (struct cl_decoded_option **in_decoded_options,
+ unsigned int *in_decoded_options_count,
+ int *in_added_libraries)
+{
+ unsigned int i, j;
+
+ /* If nonzero, the user gave us the `-p' or `-pg' flag. */
+ int saw_profile_flag = 0;
+
+ /* What do with libstdc++:
+ -1 means we should not link in libstdc++
+ 0 means we should link in libstdc++ if it is needed
+ 1 means libstdc++ is needed and should be linked in.
+ 2 means libstdc++ is needed and should be linked statically. */
+ int library = 0;
+
+ /* The number of arguments being added to what's in argv, other than
+ libraries. We use this to track the number of times we've inserted
+ -xc++/-xnone. */
+ int added = 0;
+
+ /* The new argument list will be contained in this. */
+ struct cl_decoded_option *new_decoded_options;
+
+ /* Nonzero if we saw a `-xfoo' language specification on the
+ command line. Used to avoid adding our own -xc++ if the user
+ already gave a language for the file. */
+ int saw_speclang = 0;
+
+ /* "-lm" or "-lmath" if it appears on the command line. */
+ const struct cl_decoded_option *saw_math = NULL;
+
+ /* "-lrt" or eqivalent if it appears on the command line. */
+ const struct cl_decoded_option *saw_time = NULL;
+
+ /* "-lc" if it appears on the command line. */
+ const struct cl_decoded_option *saw_libc = NULL;
+
+ /* An array used to flag each argument that needs a bit set for
+ LANGSPEC, MATHLIB, TIMELIB, or WITHLIBC. */
+ int *args;
+
+ /* By default, we throw on the math library if we have one. */
+ int need_math = (MATH_LIBRARY[0] != '\0');
+
+ /* By default, we throw on the time library if we have one. */
+ int need_time = (TIME_LIBRARY[0] != '\0');
+
+ /* True if we saw -static. */
+ int static_link = 0;
+
+ /* True if we should add -shared-libgcc to the command-line. */
+ int shared_libgcc = 1;
+
+ /* The total number of arguments with the new stuff. */
+ unsigned int argc;
+
+ /* The argument list. */
+ struct cl_decoded_option *decoded_options;
+
+ /* The number of libraries added in. */
+ int added_libraries;
+
+ /* The total number of arguments with the new stuff. */
+ unsigned int num_args = 1;
+
+ argc = *in_decoded_options_count;
+ decoded_options = *in_decoded_options;
+ added_libraries = *in_added_libraries;
+
+ args = XCNEWVEC (int, argc);
+
+ for (i = 1; i < argc; i++)
+ {
+ const char *arg = decoded_options[i].arg;
+ if (decoded_options[i].errors & CL_ERR_MISSING_ARG)
+ continue; /* Avoid examining arguments of options missing them. */
+
+ switch (decoded_options[i].opt_index)
+ {
+ case OPT_nostdlib:
+ case OPT_nodefaultlibs:
+ library = -1;
+ break;
+
+ case OPT_l:
+ if (strcmp (arg, MATH_LIBRARY) == 0)
+ {
+ args[i] |= MATHLIB;
+ need_math = 0;
+ }
+ else if (strcmp (arg, TIME_LIBRARY) == 0)
+ {
+ args[i] |= TIMELIB;
+ need_time = 0;
+ }
+ else if (strcmp (arg, "c") == 0)
+ args[i] |= WITHLIBC;
+ else
+ /* Unrecognized libraries (e.g. -lfoo) may require libstdc++. */
+ library = (library == 0) ? 1 : library;
+ break;
+
+ case OPT_pg:
+ case OPT_p:
+ saw_profile_flag++;
+ break;
+
+ case OPT_x:
+ if (library == 0
+ && (strcmp (arg, "c++") == 0
+ || strcmp (arg, "c++-cpp-output") == 0
+ || strcmp (arg, "objective-c++") == 0
+ || strcmp (arg, "objective-c++-cpp-output") == 0))
+ library = 1;
+
+ saw_speclang = 1;
+ break;
+
+ case OPT_Xlinker:
+ case OPT_Wl_:
+ /* Arguments that go directly to the linker might be .o files,
+ or something, and so might cause libstdc++ to be needed. */
+ if (library == 0)
+ library = 1;
+ break;
+
+ case OPT_c:
+ case OPT_S:
+ case OPT_E:
+ case OPT_M:
+ case OPT_MM:
+ case OPT_fsyntax_only:
+ /* Don't specify libraries if we won't link, since that would
+ cause a warning. */
+ library = -1;
+ break;
+
+ case OPT_static:
+ static_link = 1;
+ break;
+
+ case OPT_static_libgcc:
+ shared_libgcc = 0;
+ break;
+
+ case OPT_static_libstdc__:
+ library = library >= 0 ? 2 : library;
+ args[i] |= SKIPOPT;
+ break;
+
+ case OPT_SPECIAL_input_file:
+ {
+ int len;
+
+ /* We don't do this anymore, since we don't get them with minus
+ signs on them. */
+ if (arg[0] == '\0' || arg[1] == '\0')
+ continue;
+
+ if (saw_speclang)
+ {
+ saw_speclang = 0;
+ continue;
+ }
+
+ /* If the filename ends in .[chi], put options around it.
+ But not if a specified -x option is currently active. */
+ len = strlen (arg);
+ if (len > 2
+ && (arg[len - 1] == 'c'
+ || arg[len - 1] == 'i'
+ || arg[len - 1] == 'h')
+ && arg[len - 2] == '.')
+ {
+ args[i] |= LANGSPEC;
+ added += 2;
+ }
+
+ /* If we don't know that this is a header file, we might
+ need to be linking in the libraries. */
+ if (library == 0)
+ {
+ if ((len <= 2 || strcmp (arg + (len - 2), ".H") != 0)
+ && (len <= 2 || strcmp (arg + (len - 2), ".h") != 0)
+ && (len <= 4 || strcmp (arg + (len - 4), ".hpp") != 0)
+ && (len <= 3 || strcmp (arg + (len - 3), ".hp") != 0)
+ && (len <= 4 || strcmp (arg + (len - 4), ".hxx") != 0)
+ && (len <= 4 || strcmp (arg + (len - 4), ".h++") != 0)
+ && (len <= 4 || strcmp (arg + (len - 4), ".HPP") != 0)
+ && (len <= 4 || strcmp (arg + (len - 4), ".tcc") != 0)
+ && (len <= 3 || strcmp (arg + (len - 3), ".hh") != 0))
+ library = 1;
+ }
+ }
+ break;
+ }
+ }
+
+ /* There's no point adding -shared-libgcc if we don't have a shared
+ libgcc. */
+#ifndef ENABLE_SHARED_LIBGCC
+ shared_libgcc = 0;
+#endif
+
+ /* Add one for shared_libgcc or extra static library. */
+ num_args = argc + added + need_math + (library > 0) * 4 + 1;
+ new_decoded_options = XNEWVEC (struct cl_decoded_option, num_args);
+
+ i = 0;
+ j = 0;
+
+ /* Copy the 0th argument, i.e., the name of the program itself. */
+ new_decoded_options[j++] = decoded_options[i++];
+
+ /* NOTE: We start at 1 now, not 0. */
+ while (i < argc)
+ {
+ new_decoded_options[j] = decoded_options[i];
+
+ /* Make sure -lstdc++ is before the math library, since libstdc++
+ itself uses those math routines. */
+ if (!saw_math && (args[i] & MATHLIB) && library > 0)
+ {
+ --j;
+ saw_math = &decoded_options[i];
+ }
+
+ if (!saw_time && (args[i] & TIMELIB) && library > 0)
+ {
+ --j;
+ saw_time = &decoded_options[i];
+ }
+
+ if (!saw_libc && (args[i] & WITHLIBC) && library > 0)
+ {
+ --j;
+ saw_libc = &decoded_options[i];
+ }
+
+ /* Wrap foo.[chi] files in a language specification to
+ force the gcc compiler driver to run cc1plus on them. */
+ if (args[i] & LANGSPEC)
+ {
+ const char *arg = decoded_options[i].arg;
+ int len = strlen (arg);
+ switch (arg[len - 1])
+ {
+ case 'c':
+ generate_option (OPT_x, "c++", 1, CL_DRIVER,
+ &new_decoded_options[j++]);
+ break;
+ case 'i':
+ generate_option (OPT_x, "c++-cpp-output", 1, CL_DRIVER,
+ &new_decoded_options[j++]);
+ break;
+ case 'h':
+ generate_option (OPT_x, "c++-header", 1, CL_DRIVER,
+ &new_decoded_options[j++]);
+ break;
+ default:
+ gcc_unreachable ();
+ }
+ new_decoded_options[j++] = decoded_options[i];
+ generate_option (OPT_x, "none", 1, CL_DRIVER,
+ &new_decoded_options[j]);
+ }
+
+ if ((args[i] & SKIPOPT) != 0)
+ --j;
+
+ i++;
+ j++;
+ }
+
+ /* Add `-lstdc++' if we haven't already done so. */
+ if (library > 0)
+ {
+#ifdef HAVE_LD_STATIC_DYNAMIC
+ if (library > 1 && !static_link)
+ {
+ generate_option (OPT_Wl_, LD_STATIC_OPTION, 1, CL_DRIVER,
+ &new_decoded_options[j]);
+ j++;
+ }
+#endif
+ generate_option (OPT_l,
+ saw_profile_flag ? LIBSTDCXX_PROFILE : LIBSTDCXX, 1,
+ CL_DRIVER, &new_decoded_options[j]);
+ added_libraries++;
+ j++;
+ /* Add target-dependent static library, if necessary. */
+ if ((static_link || library > 1) && LIBSTDCXX_STATIC != NULL)
+ {
+ generate_option (OPT_l, LIBSTDCXX_STATIC, 1,
+ CL_DRIVER, &new_decoded_options[j]);
+ added_libraries++;
+ j++;
+ }
+#ifdef HAVE_LD_STATIC_DYNAMIC
+ if (library > 1 && !static_link)
+ {
+ generate_option (OPT_Wl_, LD_DYNAMIC_OPTION, 1, CL_DRIVER,
+ &new_decoded_options[j]);
+ j++;
+ }
+#endif
+ }
+ if (saw_math)
+ new_decoded_options[j++] = *saw_math;
+ else if (library > 0 && need_math)
+ {
+ generate_option (OPT_l,
+ saw_profile_flag ? MATH_LIBRARY_PROFILE : MATH_LIBRARY,
+ 1, CL_DRIVER, &new_decoded_options[j]);
+ added_libraries++;
+ j++;
+ }
+ if (saw_time)
+ new_decoded_options[j++] = *saw_time;
+ else if (library > 0 && need_time)
+ {
+ generate_option (OPT_l, TIME_LIBRARY, 1, CL_DRIVER,
+ &new_decoded_options[j]);
+ added_libraries++;
+ j++;
+ }
+ if (saw_libc)
+ new_decoded_options[j++] = *saw_libc;
+ if (shared_libgcc && !static_link)
+ generate_option (OPT_shared_libgcc, NULL, 1, CL_DRIVER,
+ &new_decoded_options[j++]);
+
+ *in_decoded_options_count = j;
+ *in_decoded_options = new_decoded_options;
+ *in_added_libraries = added_libraries;
+}
+
+/* Called before linking. Returns 0 on success and -1 on failure. */
+int lang_specific_pre_link (void) /* Not used for C++. */
+{
+ return 0;
+}
+
+/* Number of extra output files that lang_specific_pre_link may generate. */
+int lang_specific_extra_outfiles = 0; /* Not used for C++. */