/* depend.c - Handle dependency tracking.
- Copyright (C) 1997 Free Software Foundation, Inc.
+ Copyright (C) 1997-2020 Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
GAS 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 2, or (at your option)
+ the Free Software Foundation; either version 3, or (at your option)
any later version.
GAS is distributed in the hope that it will be useful,
You should have received a copy of the GNU General Public License
along with GAS; see the file COPYING. If not, write to the Free
- Software Foundation, 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA. */
+ Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
+ 02110-1301, USA. */
#include "as.h"
+#include "filenames.h"
/* The file to write to, or NULL if no dependencies being kept. */
-static char *dep_file = NULL;
+static char * dep_file = NULL;
struct dependency
{
- char *file;
- struct dependency *next;
+ char * file;
+ struct dependency * next;
};
/* All the files we depend on. */
-static struct dependency *dep_chain = NULL;
+static struct dependency * dep_chain = NULL;
/* Current column in output file. */
static int column = 0;
-static void wrap_output PARAMS ((FILE *, char *, int));
+static int quote_string_for_make (FILE *, const char *);
+static void wrap_output (FILE *, const char *, int);
/* Number of columns allowable. */
#define MAX_COLUMNS 72
-
\f
-
/* Start saving dependencies, to be written to FILENAME. If this is
never called, then dependency tracking is simply skipped. */
void
-start_dependencies (filename)
- char *filename;
+start_dependencies (char *filename)
{
dep_file = filename;
}
/* Noticed a new filename, so try to register it. */
void
-register_dependency (filename)
- char *filename;
+register_dependency (const char *filename)
{
struct dependency *dep;
for (dep = dep_chain; dep != NULL; dep = dep->next)
{
- if (! strcmp (filename, dep->file))
+ if (!filename_cmp (filename, dep->file))
return;
}
- dep = (struct dependency *) xmalloc (sizeof (struct dependency));
+ dep = XNEW (struct dependency);
dep->file = xstrdup (filename);
dep->next = dep_chain;
dep_chain = dep;
}
+/* Quote a file name the way `make' wants it, and print it to FILE.
+ If FILE is NULL, do no printing, but return the length of the
+ quoted string.
+
+ This code is taken from gcc with only minor changes. */
+
+static int
+quote_string_for_make (FILE *file, const char *src)
+{
+ const char *p = src;
+ int i = 0;
+
+ for (;;)
+ {
+ char c = *p++;
+
+ switch (c)
+ {
+ case '\0':
+ case ' ':
+ case '\t':
+ {
+ /* GNU make uses a weird quoting scheme for white space.
+ A space or tab preceded by 2N+1 backslashes represents
+ N backslashes followed by space; a space or tab
+ preceded by 2N backslashes represents N backslashes at
+ the end of a file name; and backslashes in other
+ contexts should not be doubled. */
+ const char *q;
+
+ for (q = p - 1; src < q && q[-1] == '\\'; q--)
+ {
+ if (file)
+ putc ('\\', file);
+ i++;
+ }
+ }
+ if (!c)
+ return i;
+ if (file)
+ putc ('\\', file);
+ i++;
+ goto ordinary_char;
+
+ case '$':
+ if (file)
+ putc (c, file);
+ i++;
+ /* Fall through. */
+ /* This can mishandle things like "$(" but there's no easy fix. */
+ default:
+ ordinary_char:
+ /* This can mishandle characters in the string "\0\n%*?[\\~";
+ exactly which chars are mishandled depends on the `make' version.
+ We know of no portable solution for this;
+ even GNU make 3.76.1 doesn't solve the problem entirely.
+ (Also, '\0' is mishandled due to our calling conventions.) */
+ if (file)
+ putc (c, file);
+ i++;
+ break;
+ }
+ }
+}
+
/* Append some output to the file, keeping track of columns and doing
wrapping as necessary. */
static void
-wrap_output (f, string, spacer)
- FILE *f;
- char *string;
- int spacer;
+wrap_output (FILE *f, const char *string, int spacer)
{
- int len = strlen (string);
+ int len = quote_string_for_make (NULL, string);
if (len == 0)
return;
- if (column && MAX_COLUMNS - 1 /*spacer*/ - 2 /*` \'*/ < column + len)
+ if (column
+ && (MAX_COLUMNS
+ - 1 /* spacer */
+ - 2 /* ` \' */
+ < column + len))
{
fprintf (f, " \\\n ");
column = 0;
++column;
}
- fputs (string, f);
+ quote_string_for_make (f, string);
column += len;
if (spacer == ':')
/* Print dependency file. */
void
-print_dependencies ()
+print_dependencies (void)
{
FILE *f;
struct dependency *dep;
if (dep_file == NULL)
return;
- f = fopen (dep_file, "w");
+ f = fopen (dep_file, FOPEN_WT);
if (f == NULL)
{
- as_warn ("Can't open `%s' for writing", dep_file);
+ as_warn (_("can't open `%s' for writing"), dep_file);
return;
}
putc ('\n', f);
if (fclose (f))
- as_warn ("Can't close %s", dep_file);
+ as_warn (_("can't close `%s'"), dep_file);
}
projects / deliverable / binutils-gdb.git / blobdiff