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Formerly variable.c.~18~

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This commit is contained in:
Roland McGrath 1993-01-28 23:01:01 +00:00
parent cd493b3d8f
commit ddd3143498
1 changed files with 26 additions and 6 deletions
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32
variable.c
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@ -355,7 +355,7 @@ define_automatic_variables ()
/* This won't override any definition, but it
will provide one if there isn't one there. */
v = define_variable ("SHELL", 5, default_shell, o_default, 0);
v->export = v_export;
v->export = v_export; /* Always export SHELL. */
/* Don't let SHELL come from the environment. */
if (*v->value == '\0' || v->origin == o_env || v->origin == o_env_override)
@ -368,6 +368,22 @@ define_automatic_variables ()
/* Make sure MAKEFILES gets exported if it is set. */
v = define_variable ("MAKEFILES", 9, "", o_default, 0);
v->export = v_ifset;
/* Define the magic D and F variables in terms of
the automatic variables they are variations of. */
define_variable ("@D", 2, "$(dir $@)", o_automatic, 1);
define_variable ("%D", 2, "$(dir $%)", o_automatic, 1);
define_variable ("*D", 2, "$(dir $*)", o_automatic, 1);
define_variable ("<D", 2, "$(dir $<)", o_automatic, 1);
define_variable ("?D", 2, "$(dir $?)", o_automatic, 1);
define_variable ("^D", 2, "$(dir $^)", o_automatic, 1);
define_variable ("@F", 2, "$(notdir $@)", o_automatic, 1);
define_variable ("%F", 2, "$(notdir $%)", o_automatic, 1);
define_variable ("*F", 2, "$(notdir $*)", o_automatic, 1);
define_variable ("<F", 2, "$(notdir $<)", o_automatic, 1);
define_variable ("?F", 2, "$(notdir $?)", o_automatic, 1);
define_variable ("^F", 2, "$(notdir $^)", o_automatic, 1);
}
int export_all_variables;
@ -437,6 +453,10 @@ target_environment (file)
switch (v->export)
{
case v_default:
if (v->origin == o_default || v->origin == o_automatic)
/* Only export default variables by explicit request. */
continue;
if (!export_all_variables
&& v->origin != o_command
&& v->origin != o_env && v->origin != o_env_override
@ -495,11 +515,11 @@ target_environment (file)
go back into the environment unchanged. */
if (v->recursive
&& v->origin != o_env && v->origin != o_env_override)
{
char *value = recursively_expand (v);
result[nvariables++] = concat (v->name, "=", value);
free (value);
}
{
char *value = recursively_expand (v);
result[nvariables++] = concat (v->name, "=", value);
free (value);
}
else
result[nvariables++] = concat (v->name, "=", v->value);
}