Gcc 3.4.2 20040728.

1 files changed, 89 insertions, 35 deletions

diff --git a/contrib/gcc/mkdeps.c b/contrib/gcc/mkdeps.c
index 2c30063..23af9d8 100644
--- a/contrib/gcc/mkdeps.c
+++ b/contrib/gcc/mkdeps.c
@@ -1,5 +1,5 @@
 /* Dependency generator for Makefile fragments.
-   Copyright (C) 2000, 2001 Free Software Foundation, Inc.
+   Copyright (C) 2000, 2001, 2003 Free Software Foundation, Inc.
    Contributed by Zack Weinberg, Mar 2000
 
 This program is free software; you can redistribute it and/or modify it
@@ -37,7 +37,7 @@ struct deps
   unsigned int deps_size;
 };
 
-static const char *munge	PARAMS ((const char *));
+static const char *munge (const char *);
 
 /* Given a filename, quote characters in that filename which are
    significant to Make.  Note that it's not possible to quote all such
@@ -45,10 +45,9 @@ static const char *munge	PARAMS ((const char *));
    not properly handled.  It isn't possible to get this right in any
    current version of Make.  (??? Still true?  Old comment referred to
    3.76.1.)  */
-   
+
 static const char *
-munge (filename)
-     const char *filename;
+munge (const char *filename)
 {
   int len;
   const char *p, *q;
@@ -109,9 +108,9 @@ munge (filename)
 /* Public routines.  */
 
 struct deps *
-deps_init ()
+deps_init (void)
 {
-  struct deps *d = (struct deps *) xmalloc (sizeof (struct deps));
+  struct deps *d = xmalloc (sizeof (struct deps));
 
   /* Allocate space for the vectors only if we need it.  */
 
@@ -127,22 +126,21 @@ deps_init ()
 }
 
 void
-deps_free (d)
-     struct deps *d;
+deps_free (struct deps *d)
 {
   unsigned int i;
 
   if (d->targetv)
     {
       for (i = 0; i < d->ntargets; i++)
-	free ((PTR) d->targetv[i]);
+	free ((void *) d->targetv[i]);
       free (d->targetv);
     }
 
   if (d->depv)
     {
       for (i = 0; i < d->ndeps; i++)
-	free ((PTR) d->depv[i]);
+	free ((void *) d->depv[i]);
       free (d->depv);
     }
 
@@ -152,15 +150,12 @@ deps_free (d)
 /* Adds a target T.  We make a copy, so it need not be a permanent
    string.  QUOTE is true if the string should be quoted.  */
 void
-deps_add_target (d, t, quote)
-     struct deps *d;
-     const char *t;
-     int quote;
+deps_add_target (struct deps *d, const char *t, int quote)
 {
   if (d->ntargets == d->targets_size)
     {
       d->targets_size = d->targets_size * 2 + 4;
-      d->targetv = (const char **) xrealloc (d->targetv,
+      d->targetv = xrealloc (d->targetv,
 			     d->targets_size * sizeof (const char *));
     }
 
@@ -176,9 +171,7 @@ deps_add_target (d, t, quote)
    string as the default target in interpreted as stdin.  The string
    is quoted for MAKE.  */
 void
-deps_add_default_target (d, tgt)
-     struct deps *d;
-     const char *tgt;
+deps_add_default_target (struct deps *d, const char *tgt)
 {
   /* Only if we have no targets.  */
   if (d->ntargets)
@@ -192,41 +185,35 @@ deps_add_default_target (d, tgt)
 # define TARGET_OBJECT_SUFFIX ".o"
 #endif
       const char *start = lbasename (tgt);
-      char *o = (char *) alloca (strlen (start) + strlen (TARGET_OBJECT_SUFFIX) + 1);
+      char *o = alloca (strlen (start) + strlen (TARGET_OBJECT_SUFFIX) + 1);
       char *suffix;
 
       strcpy (o, start);
-      
+
       suffix = strrchr (o, '.');
       if (!suffix)
         suffix = o + strlen (o);
       strcpy (suffix, TARGET_OBJECT_SUFFIX);
-      
+
       deps_add_target (d, o, 1);
     }
 }
 
 void
-deps_add_dep (d, t)
-     struct deps *d;
-     const char *t;
+deps_add_dep (struct deps *d, const char *t)
 {
   t = munge (t);  /* Also makes permanent copy.  */
 
   if (d->ndeps == d->deps_size)
     {
       d->deps_size = d->deps_size * 2 + 8;
-      d->depv = (const char **)
-	xrealloc (d->depv, d->deps_size * sizeof (const char *));
+      d->depv = xrealloc (d->depv, d->deps_size * sizeof (const char *));
     }
   d->depv[d->ndeps++] = t;
 }
 
 void
-deps_write (d, fp, colmax)
-     const struct deps *d;
-     FILE *fp;
-     unsigned int colmax;
+deps_write (const struct deps *d, FILE *fp, unsigned int colmax)
 {
   unsigned int size, i, column;
 
@@ -273,11 +260,9 @@ deps_write (d, fp, colmax)
     }
   putc ('\n', fp);
 }
-  
+
 void
-deps_phony_targets (d, fp)
-     const struct deps *d;
-     FILE *fp;
+deps_phony_targets (const struct deps *d, FILE *fp)
 {
   unsigned int i;
 
@@ -289,3 +274,72 @@ deps_phony_targets (d, fp)
       putc ('\n', fp);
     }
 }
+
+/* Write out a deps buffer to a file, in a form that can be read back
+   with deps_restore.  Returns nonzero on error, in which case the
+   error number will be in errno.  */
+
+int
+deps_save (struct deps *deps, FILE *f)
+{
+  unsigned int i;
+
+  /* The cppreader structure contains makefile dependences.  Write out this
+     structure.  */
+
+  /* The number of dependences.  */
+  if (fwrite (&deps->ndeps, sizeof (deps->ndeps), 1, f) != 1)
+      return -1;
+  /* The length of each dependence followed by the string.  */
+  for (i = 0; i < deps->ndeps; i++)
+    {
+      size_t num_to_write = strlen (deps->depv[i]);
+      if (fwrite (&num_to_write, sizeof (size_t), 1, f) != 1)
+          return -1;
+      if (fwrite (deps->depv[i], num_to_write, 1, f) != 1)
+          return -1;
+    }
+
+  return 0;
+}
+
+/* Read back dependency information written with deps_save into
+   the deps buffer.  The third argument may be NULL, in which case
+   the dependency information is just skipped, or it may be a filename,
+   in which case that filename is skipped.  */
+
+int
+deps_restore (struct deps *deps, FILE *fd, const char *self)
+{
+  unsigned int i, count;
+  size_t num_to_read;
+  size_t buf_size = 512;
+  char *buf = xmalloc (buf_size);
+
+  /* Number of dependences.  */
+  if (fread (&count, 1, sizeof (count), fd) != sizeof (count))
+    return -1;
+
+  /* The length of each dependence string, followed by the string.  */
+  for (i = 0; i < count; i++)
+    {
+      /* Read in # bytes in string.  */
+      if (fread (&num_to_read, 1, sizeof (size_t), fd) != sizeof (size_t))
+	return -1;
+      if (buf_size < num_to_read + 1)
+	{
+	  buf_size = num_to_read + 1 + 127;
+	  buf = xrealloc (buf, buf_size);
+	}
+      if (fread (buf, 1, num_to_read, fd) != num_to_read)
+	return -1;
+      buf[num_to_read] = '\0';
+
+      /* Generate makefile dependencies from .pch if -nopch-deps.  */
+      if (self != NULL && strcmp (buf, self) != 0)
+        deps_add_dep (deps, buf);
+    }
+
+  free (buf);
+  return 0;
+}