diff options
Diffstat (limited to 'main.c')
| -rw-r--r-- | main.c | 144 |
1 files changed, 102 insertions, 42 deletions
@@ -1,7 +1,7 @@ /* Argument parsing and main program of GNU Make. Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, -1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software -Foundation, Inc. +1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free +Software Foundation, Inc. This file is part of GNU Make. GNU Make is free software; you can redistribute it and/or modify it under the @@ -263,6 +263,9 @@ static struct stringlist *old_files = 0; static struct stringlist *new_files = 0; +/* List of strings to be eval'd. */ +static struct stringlist *eval_strings = 0; + /* If nonzero, we should just print usage and exit. */ static int print_usage_flag = 0; @@ -313,6 +316,8 @@ static const char *const usage[] = -e, --environment-overrides\n\ Environment variables override makefiles.\n"), N_("\ + --eval=STRING Evaluate STRING as a makefile statement.\n"), + N_("\ -f FILE, --file=FILE, --makefile=FILE\n\ Read FILE as a makefile.\n"), N_("\ @@ -418,6 +423,7 @@ static const struct command_switch switches[] = { 'W', filename, &new_files, 0, 0, 0, 0, 0, "what-if" }, { CHAR_MAX+5, flag, &warn_undefined_variables_flag, 1, 1, 0, 0, 0, "warn-undefined-variables" }, + { CHAR_MAX+6, string, &eval_strings, 1, 0, 0, 0, 0, "eval" }, { 0, 0, 0, 0, 0, 0, 0, 0, 0 } }; @@ -1114,15 +1120,15 @@ main (int argc, char **argv, char **envp) #endif /* Initialize the special variables. */ - define_variable (".VARIABLES", 10, "", o_default, 0)->special = 1; - /* define_variable (".TARGETS", 8, "", o_default, 0)->special = 1; */ - define_variable (".RECIPEPREFIX", 13, "", o_default, 0)->special = 1; + define_variable_cname (".VARIABLES", "", o_default, 0)->special = 1; + /* define_variable_cname (".TARGETS", "", o_default, 0)->special = 1; */ + define_variable_cname (".RECIPEPREFIX", "", o_default, 0)->special = 1; /* Set up .FEATURES */ - define_variable (".FEATURES", 9, - "target-specific order-only second-expansion else-if" - "shortest-stem undefine", - o_default, 0); + define_variable_cname (".FEATURES", + "target-specific order-only second-expansion else-if" + "shortest-stem undefine", + o_default, 0); #ifndef NO_ARCHIVES do_variable_definition (NILF, ".FEATURES", "archives", o_default, f_append, 0); @@ -1204,9 +1210,8 @@ main (int argc, char **argv, char **envp) * either the first mispelled value or an empty string */ if (!unix_path) - define_variable("PATH", 4, - windows32_path ? windows32_path : "", - o_env, 1)->export = v_export; + define_variable_cname ("PATH", windows32_path ? windows32_path : "", + o_env, 1)->export = v_export; #endif #else /* For Amiga, read the ENV: device, ignoring all dirs */ { @@ -1248,7 +1253,9 @@ main (int argc, char **argv, char **envp) and we set the -p, -i and -e switches. Doesn't seem quite right. */ decode_env_switches (STRING_SIZE_TUPLE ("MFLAGS")); #endif + decode_switches (argc, argv, 0); + #ifdef WINDOWS32 if (suspend_flag) { fprintf(stderr, "%s (pid = %ld)\n", argv[0], GetCurrentProcessId()); @@ -1328,8 +1335,8 @@ main (int argc, char **argv, char **envp) /* The extra indirection through $(MAKE_COMMAND) is done for hysterical raisins. */ - (void) define_variable ("MAKE_COMMAND", 12, argv[0], o_default, 0); - (void) define_variable ("MAKE", 4, "$(MAKE_COMMAND)", o_default, 1); + define_variable_cname ("MAKE_COMMAND", argv[0], o_default, 0); + define_variable_cname ("MAKE", "$(MAKE_COMMAND)", o_default, 1); if (command_variables != 0) { @@ -1367,8 +1374,7 @@ main (int argc, char **argv, char **envp) /* Define an unchangeable variable with a name that no POSIX.2 makefile could validly use for its own variable. */ - (void) define_variable ("-*-command-variables-*-", 23, - value, o_automatic, 0); + define_variable_cname ("-*-command-variables-*-", value, o_automatic, 0); /* Define the variable; this will not override any user definition. Normally a reference to this variable is written into the value of @@ -1376,8 +1382,8 @@ main (int argc, char **argv, char **envp) exported value of MAKEFLAGS. In POSIX-pedantic mode, we cannot allow the user's setting of MAKEOVERRIDES to affect MAKEFLAGS, so a reference to this hidden variable is written instead. */ - (void) define_variable ("MAKEOVERRIDES", 13, - "${-*-command-variables-*-}", o_env, 1); + define_variable_cname ("MAKEOVERRIDES", "${-*-command-variables-*-}", + o_env, 1); } /* If there were -C flags, move ourselves about. */ @@ -1464,7 +1470,7 @@ main (int argc, char **argv, char **envp) starting_directory = current_directory; } - (void) define_variable ("CURDIR", 6, current_directory, o_file, 0); + define_variable_cname ("CURDIR", current_directory, o_file, 0); /* Read any stdin makefiles into temporary files. */ @@ -1604,7 +1610,37 @@ main (int argc, char **argv, char **envp) default_file = enter_file (strcache_add (".DEFAULT")); - default_goal_var = define_variable (".DEFAULT_GOAL", 13, "", o_file, 0); + default_goal_var = define_variable_cname (".DEFAULT_GOAL", "", o_file, 0); + + /* Evaluate all strings provided with --eval. + Also set up the $(-*-eval-flags-*-) variable. */ + + if (eval_strings) + { + char *p, *value; + unsigned int i; + unsigned int len = sizeof ("--eval=") * eval_strings->idx; + + for (i = 0; i < eval_strings->idx; ++i) + { + p = xstrdup (eval_strings->list[i]); + len += 2 * strlen (p); + eval_buffer (p); + free (p); + } + + p = value = alloca (len); + for (i = 0; i < eval_strings->idx; ++i) + { + strcpy (p, "--eval="); + p += strlen (p); + p = quote_for_env (p, eval_strings->list[i]); + *(p++) = ' '; + } + p[-1] = '\0'; + + define_variable_cname ("-*-eval-flags-*-", value, o_automatic, 0); + } /* Read all the makefiles. */ @@ -2402,7 +2438,7 @@ handle_non_switch_argument (char *arg, int env) memcpy (&vp[oldlen + 1], f->name, newlen + 1); value = vp; } - define_variable ("MAKECMDGOALS", 12, value, o_default, 0); + define_variable_cname ("MAKECMDGOALS", value, o_default, 0); } } } @@ -2504,8 +2540,16 @@ decode_switches (int argc, char **argv, int env) optarg = xstrdup (cs->noarg_value); else if (*optarg == '\0') { - error (NILF, _("the `-%c' option requires a non-empty string argument"), - cs->c); + char opt[2] = "c"; + const char *op = opt; + + if (short_option (cs->c)) + opt[0] = cs->c; + else + op = cs->long_name; + + error (NILF, _("the `%s%s' option requires a non-empty string argument"), + short_option (cs->c) ? "-" : "--", op); bad = 1; } @@ -2703,9 +2747,10 @@ quote_for_env (char *out, const char *in) static const char * define_makeflags (int all, int makefile) { - static const char ref[] = "$(MAKEOVERRIDES)"; - static const char posixref[] = "$(-*-command-variables-*-)"; - register const struct command_switch *cs; + const char ref[] = "$(MAKEOVERRIDES)"; + const char posixref[] = "$(-*-command-variables-*-)"; + const char evalref[] = "$(-*-eval-flags-*-)"; + const struct command_switch *cs; char *flagstring; register char *p; unsigned int words; @@ -2726,7 +2771,7 @@ define_makeflags (int all, int makefile) unsigned int flagslen = 0; #define ADD_FLAG(ARG, LEN) \ do { \ - struct flag *new = alloca (sizeof (struct flag)); \ + struct flag *new = alloca (sizeof (struct flag)); \ new->cs = cs; \ new->arg = (ARG); \ new->next = flags; \ @@ -2734,7 +2779,8 @@ define_makeflags (int all, int makefile) if (new->arg == 0) \ ++flagslen; /* Just a single flag letter. */ \ else \ - flagslen += 1 + 1 + 1 + 1 + 3 * (LEN); /* " -x foo" */ \ + /* " -x foo", plus space to expand "foo". */ \ + flagslen += 1 + 1 + 1 + 1 + (3 * (LEN)); \ if (!short_option (cs->c)) \ /* This switch has no single-letter version, so we use the long. */ \ flagslen += 2 + strlen (cs->long_name); \ @@ -2821,7 +2867,8 @@ define_makeflags (int all, int makefile) abort (); } - flagslen += 4 + sizeof posixref; /* Four more for the possible " -- ". */ + /* Four more for the possible " -- ". */ + flagslen += 4 + sizeof (posixref) + sizeof (evalref); #undef ADD_FLAG @@ -2893,7 +2940,20 @@ define_makeflags (int all, int makefile) /* Since MFLAGS is not parsed for flags, there is no reason to override any makefile redefinition. */ - (void) define_variable ("MFLAGS", 6, flagstring, o_env, 1); + define_variable_cname ("MFLAGS", flagstring, o_env, 1); + + /* Write a reference to -*-eval-flags-*-, which contains all the --eval + flag options. */ + if (eval_strings) + { + if (p == &flagstring[1]) + /* No flags written, so elide the leading dash already written. */ + p = flagstring; + else + *p++ = ' '; + memcpy (p, evalref, sizeof (evalref) - 1); + p += sizeof (evalref) - 1; + } if (all && command_variables != 0) { @@ -2920,13 +2980,13 @@ define_makeflags (int all, int makefile) /* Copy in the string. */ if (posix_pedantic) { - memcpy (p, posixref, sizeof posixref - 1); - p += sizeof posixref - 1; + memcpy (p, posixref, sizeof (posixref) - 1); + p += sizeof (posixref) - 1; } else { - memcpy (p, ref, sizeof ref - 1); - p += sizeof ref - 1; + memcpy (p, ref, sizeof (ref) - 1); + p += sizeof (ref) - 1; } } else if (p == &flagstring[1]) @@ -2945,14 +3005,14 @@ define_makeflags (int all, int makefile) if (flagstring[0] == '-' && flagstring[1] != '-') ++flagstring; - v = define_variable ("MAKEFLAGS", 9, flagstring, - /* This used to use o_env, but that lost when a - makefile defined MAKEFLAGS. Makefiles set - MAKEFLAGS to add switches, but we still want - to redefine its value with the full set of - switches. Of course, an override or command - definition will still take precedence. */ - o_file, 1); + v = define_variable_cname ("MAKEFLAGS", flagstring, + /* This used to use o_env, but that lost when a + makefile defined MAKEFLAGS. Makefiles set + MAKEFLAGS to add switches, but we still want + to redefine its value with the full set of + switches. Of course, an override or command + definition will still take precedence. */ + o_file, 1); if (! all) /* The first time we are called, set MAKEFLAGS to always be exported. |