> Here are the possible solutions that I see:
>
> 1) Change the default behaviour so that command line variables are
> not exported by default. If I want a variable exported to the
> environment, there are a variety of ways to do this before the
> sub-make is executed.
Here is a patch along the line suggested above. The old behaviour
is still available it the special target .EXPORT_COMMAND_VARIABLES
is defined in the Makefile. What do you think?
Dave
--
J. David Anglin [EMAIL PROTECTED]
National Research Council of Canada (613) 990-0752 (FAX: 952-6605)
2001-01-16 John David Anglin <[EMAIL PROTECTED]>
* file.c (snap_deps): Add special target .EXPORT_COMMAND_VARIABLES.
* variable.c (export_command_variables): New variable.
(target_environment): Don't export command line variables unless
export_command_variables is true.
* variable.h (export_command_variables): Prototype.
--- file.c.orig Tue Jun 20 10:00:16 2000
+++ file.c Tue Jan 16 15:18:19 2001
@@ -509,6 +509,10 @@
if (f != 0 && f->is_target)
export_all_variables = 1;
+ f = lookup_file (".EXPORT_COMMAND_VARIABLES");
+ if (f != 0 && f->is_target)
+ export_command_variables = 1;
+
f = lookup_file (".IGNORE");
if (f != 0 && f->is_target)
{
--- variable.c.orig Fri May 19 12:36:08 2000
+++ variable.c Tue Jan 16 15:42:51 2001
@@ -573,7 +573,7 @@
define_variable ("+F", 2, "$(notdir $+)", o_automatic, 1);
}
-int export_all_variables;
+int export_all_variables, export_command_variables;
/* Create a new environment for FILE's commands.
If FILE is nil, this is for the `shell' function.
@@ -668,6 +668,10 @@
&& v->origin != o_env && v->origin != o_env_override)
continue;
+ if (! export_all_variables && ! export_command_variables
+ && v->origin == o_command)
+ continue;
+
if (*p != '_' && (*p < 'A' || *p > 'Z')
&& (*p < 'a' || *p > 'z'))
continue;
--- variable.h.orig Thu Feb 24 13:59:14 2000
+++ variable.h Tue Jan 16 15:11:47 2001
@@ -135,3 +135,5 @@
extern char **target_environment PARAMS ((struct file *file));
extern int export_all_variables;
+
+extern int export_command_variables;
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