gcc/mkdeps.h

   1 /* Dependency generator for Makefile fragments.
   2    Copyright (C) 2000 Free Software Foundation, Inc.
   3    Contributed by Zack Weinberg, Mar 2000
   4
   5 This program is free software; you can redistribute it and/or modify it
   6 under the terms of the GNU General Public License as published by the
   7 Free Software Foundation; either version 2, or (at your option) any
   8 later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18
  19  In other words, you are welcome to use, share and improve this program.
  20  You are forbidden to forbid anyone else to use, share and improve
  21  what you give them.   Help stamp out software-hoarding!  */
  22
  23 #ifndef __GCC_MKDEPS__
  24 #define __GCC_MKDEPS__
  25
  26 /* This is the data structure used by all the functions in mkdeps.c.
  27    It's quite straightforward, but should be treated as opaque.  */
  28
  29 struct deps
  30 {
  31   const char **targetv;
  32   unsigned int ntargets;        /* number of slots actually occupied */
  33   unsigned int targets_size;    /* amt of allocated space - in words */
  34
  35   const char **depv;
  36   unsigned int ndeps;
  37   unsigned int deps_size;
  38 };
  39
  40 /* Create a deps buffer.  */
  41 extern struct deps *deps_init   PARAMS ((void));
  42
  43 /* Destroy a deps buffer.  */
  44 extern void deps_free           PARAMS ((struct deps *));
  45
  46 /* Add a target (appears on left side of the colon) to the deps list. */
  47 extern void deps_add_target     PARAMS ((struct deps *, const char *));
  48
  49 /* Given the name of the primary source file, calculate and add the
  50    name of the target.  This is done by locating and stripping the
  51    file extension (if any) and adding .o (OBJECT_SUFFIX).  In addition,
  52    any directory components of the path are discarded.  */
  53 extern void deps_calc_target    PARAMS ((struct deps *, const char *));
  54
  55 /* Add a dependency (appears on the right side of the colon) to the
  56    deps list.  Dependencies will be printed in the order that they
  57    were entered with this function.  By convention, the first
  58    dependency entered should be the primary source file.  */
  59 extern void deps_add_dep        PARAMS ((struct deps *, const char *));
  60
  61 /* Write out a deps buffer to a specified file.  The third argument
  62    is the number of columns to word-wrap at (0 means don't wrap).  */
  63 extern void deps_write          PARAMS ((const struct deps *, FILE *,
  64                                          unsigned int));
  65
  66 /* For each dependency *except the first*, emit a dummy rule for that
  67    file, causing it to depend on nothing.  This is used to work around
  68    the intermediate-file deletion misfeature in Make, in some
  69    automatic dependency schemes.  */
  70 extern void deps_dummy_targets  PARAMS ((const struct deps *, FILE *));
  71
  72 #endif