/* Dependency generator for Makefile fragments.
- Copyright (C) 2000 Free Software Foundation, Inc.
+ Copyright (C) 2000, 2001 Free Software Foundation, Inc.
Contributed by Zack Weinberg, Mar 2000
This program is free software; you can redistribute it and/or modify it
#include "system.h"
#include "mkdeps.h"
-static const char *munge PARAMS ((const char *));
-static const char *base_name PARAMS ((const char *));
+/* Keep this structure local to this file, so clients don't find it
+ easy to start making assumptions. */
+struct deps
+{
+ const char **targetv;
+ unsigned int ntargets; /* number of slots actually occupied */
+ unsigned int targets_size; /* amt of allocated space - in words */
-#ifndef OBJECT_SUFFIX
-# define OBJECT_SUFFIX ".o"
-#endif
+ const char **depv;
+ unsigned int ndeps;
+ unsigned int deps_size;
+};
+
+static const char *munge PARAMS ((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
break;
case '$':
- /* '$' is quoted by doubling it. This can mishandle things
- like "$(" but there's no easy fix. */
+ /* '$' is quoted by doubling it. */
len++;
break;
}
}
/* Now we know how big to make the buffer. */
- buffer = malloc (len + 1);
+ buffer = xmalloc (len + 1);
for (p = filename, dst = buffer; *p; p++, dst++)
{
return buffer;
}
-/* Given a pathname, calculate the non-directory part. This always
- knows how to handle Unix-style pathnames, and understands VMS and
- DOS paths on those systems. */
-
-/* Find the base name of a (partial) pathname FNAME.
- Returns a pointer into the string passed in.
- Accepts Unix (/-separated) paths on all systems,
- DOS and VMS paths on those systems. */
-
-static const char *
-base_name (fname)
- const char *fname;
-{
- const char *s = fname;
- const char *p;
-#if defined (HAVE_DOS_BASED_FILE_SYSTEM)
- if (ISALPHA (s[0]) && s[1] == ':') s += 2;
- if ((p = strrchr (s, '\\'))) s = p + 1;
-#elif defined VMS
- if ((p = strrchr (s, ':'))) s = p + 1; /* Skip device. */
- if ((p = strrchr (s, ']'))) s = p + 1; /* Skip directory. */
- if ((p = strrchr (s, '>'))) s = p + 1; /* Skip alternate (int'n'l) dir. */
-#endif
- if ((p = strrchr (s, '/'))) s = p + 1;
- return s;
-}
-
/* Public routines. */
struct deps *
{
struct deps *d = (struct deps *) xmalloc (sizeof (struct deps));
- /* Allocate space for the vectors now. */
+ /* Allocate space for the vectors only if we need it. */
- d->targetv = (const char **) xmalloc (2 * sizeof (const char *));
- d->depv = (const char **) xmalloc (8 * sizeof (const char *));
+ d->targetv = 0;
+ d->depv = 0;
d->ntargets = 0;
- d->targets_size = 2;
+ d->targets_size = 0;
d->ndeps = 0;
- d->deps_size = 8;
+ d->deps_size = 0;
return d;
}
{
unsigned int i;
- for (i = 0; i < d->ntargets; i++)
- free ((PTR) d->targetv[i]);
+ if (d->targetv)
+ {
+ for (i = 0; i < d->ntargets; i++)
+ free ((PTR) d->targetv[i]);
+ free (d->targetv);
+ }
- for (i = 0; i < d->ndeps; i++)
- free ((PTR) d->depv[i]);
+ if (d->depv)
+ {
+ for (i = 0; i < d->ndeps; i++)
+ free ((PTR) d->depv[i]);
+ free (d->depv);
+ }
- free (d->targetv);
- free (d->depv);
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)
+deps_add_target (d, t, quote)
struct deps *d;
const char *t;
+ int quote;
{
- t = munge (t); /* Also makes permanent copy. */
-
if (d->ntargets == d->targets_size)
{
- d->targets_size *= 2;
- d->targetv = xrealloc (d->targetv,
+ d->targets_size = d->targets_size * 2 + 4;
+ d->targetv = (const char **) xrealloc (d->targetv,
d->targets_size * sizeof (const char *));
}
+ if (quote)
+ t = munge (t); /* Also makes permanent copy. */
+ else
+ t = xstrdup (t);
+
d->targetv[d->ntargets++] = t;
}
+/* Sets the default target if none has been given already. An empty
+ string as the default target in interpreted as stdin. The string
+ is quoted for MAKE. */
void
-deps_calc_target (d, t)
+deps_add_default_target (d, tgt)
struct deps *d;
- const char *t;
+ const char *tgt;
{
- char *o, *suffix;
-
- t = base_name (t);
- o = (char *) alloca (strlen (t) + 8);
+ /* Only if we have no targets. */
+ if (d->ntargets)
+ return;
- strcpy (o, t);
- suffix = strrchr (o, '.');
- if (suffix)
- strcpy (suffix, OBJECT_SUFFIX);
+ if (tgt[0] == '\0')
+ deps_add_target (d, "-", 1);
else
- strcat (o, OBJECT_SUFFIX);
-
- deps_add_target (d, o);
+ {
+#ifndef TARGET_OBJECT_SUFFIX
+# define TARGET_OBJECT_SUFFIX ".o"
+#endif
+ const char *start = lbasename (tgt);
+ char *o = (char *) 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
if (d->ndeps == d->deps_size)
{
- d->deps_size *= 2;
- d->depv = xrealloc (d->depv, d->deps_size * sizeof (const char *));
+ d->deps_size = d->deps_size * 2 + 8;
+ d->depv = (const char **)
+ xrealloc (d->depv, d->deps_size * sizeof (const char *));
}
d->depv[d->ndeps++] = t;
}
}
void
-deps_dummy_targets (d, fp)
+deps_phony_targets (d, fp)
const struct deps *d;
FILE *fp;
{
for (i = 1; i < d->ndeps; i++)
{
+ putc ('\n', fp);
fputs (d->depv[i], fp);
putc (':', fp);
putc ('\n', fp);
OSDN Git Service
