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tools/automake: control all cleaning with clean variables 

Automake previously makes rules for the target maintainer-clean
to remove both the contents of MAINTAINERCLEANFILES and BUILT_SOURCES.

In order to have finer control over what is removed,
let there only be a rule for deleting MAINTAINERCLEANFILES,
and set MAINTAINERCLEANFILES to a default value of BUILT_SOURCES
if only conditional or missing, and append BUILT_SOURCES if user-defined.

In order to maintain conditional values for MAINTAINERCLEANFILES
while keeping a default value, change the behavior of automake
to output unconditional definitions before conditions.

Signed-off-by: Michael Pratt <mcpratt@pm.me>
Link: https://github.com/openwrt/openwrt/pull/16522
Signed-off-by: Robert Marko <robimarko@gmail.com>
This commit is contained in:
Michael Pratt 2024-10-08 06:55:47 -04:00 committed by Robert Marko
parent fddac9af6f
commit 6d2bfe50d3
2 changed files with 83 additions and 0 deletions
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34
tools/automake/patches/300-output-TRUE-cond-first.patch Normal file
View File

@ -0,0 +1,34 @@
--- a/lib/Automake/Variable.pm
+++ b/lib/Automake/Variable.pm
@@ -1259,8 +1259,15 @@ sub output_variables ()
foreach my $var (@vars)
{
my $v = rvar $var;
+ # Output unconditional definitions before conditional ones.
+ if ($v->def (TRUE)) {
+ $res .= $v->output (TRUE)
+ if $v->rdef (TRUE)->owner == VAR_AUTOMAKE;
+ }
foreach my $cond ($v->conditions->conds)
{
+ # TRUE is handled already.
+ next if $cond->string eq "TRUE";
$res .= $v->output ($cond)
if $v->rdef ($cond)->owner == VAR_AUTOMAKE;
}
@@ -1270,8 +1277,15 @@ sub output_variables ()
foreach my $var (@vars)
{
my $v = rvar $var;
+ # Output unconditional definitions before conditional ones.
+ if ($v->def (TRUE)) {
+ $res .= $v->output (TRUE)
+ if $v->rdef (TRUE)->owner != VAR_AUTOMAKE;
+ }
foreach my $cond ($v->conditions->conds)
{
+ # TRUE is handled already.
+ next if $cond->string eq "TRUE";
$res .= $v->output ($cond)
if $v->rdef ($cond)->owner != VAR_AUTOMAKE;
}

49
tools/automake/patches/310-maintainer-clean-built_sources.patch Normal file
View File

@ -0,0 +1,49 @@
--- a/bin/automake.in
+++ b/bin/automake.in
@@ -4745,12 +4745,42 @@ sub handle_clean
if var ('CLEANFILES');
$clean_files{'$(DISTCLEANFILES)'} = DIST_CLEAN
if var ('DISTCLEANFILES');
- $clean_files{'$(MAINTAINERCLEANFILES)'} = MAINTAINER_CLEAN
- if var ('MAINTAINERCLEANFILES');
# Built sources are automatically removed by maintainer-clean.
- $clean_files{'$(BUILT_SOURCES)'} = MAINTAINER_CLEAN
- if var ('BUILT_SOURCES');
+ # For each defined condition of the maintainer-clean variable, append built sources
+ # and create an unconditional definition with built sources if not already defined.
+ # Then, for each definition of built sources without maintainer-clean defined, define it.
+ # Otherwise, if the variable is not user-defined, define it with built sources.
+ my $mcleanvar = var ('MAINTAINERCLEANFILES');
+ if ($mcleanvar) {
+ foreach my $rcond ($mcleanvar->conditions->conds)
+ {
+ if (! grep { $_ eq '$(BUILT_SOURCES)' } $mcleanvar->value_as_list ($rcond)) {
+ Automake::Variable::define ($mcleanvar->name, VAR_MAKEFILE, '+', $rcond,
+ '$(BUILT_SOURCES)', '', INTERNAL, VAR_ASIS)
+ if vardef ('BUILT_SOURCES', $rcond);
+ }
+ }
+ my $bsources = var ('BUILT_SOURCES');
+ if ($bsources) {
+ foreach my $rcond ($bsources->conditions->conds)
+ {
+ Automake::Variable::define ($mcleanvar->name, VAR_MAKEFILE, '', $rcond,
+ '$(BUILT_SOURCES)', '', INTERNAL, VAR_ASIS)
+ if ! vardef ($mcleanvar, $rcond);
+ }
+ if (! vardef ($mcleanvar, TRUE)) {
+ Automake::Variable::define ($mcleanvar->name, VAR_MAKEFILE, '', TRUE,
+ '$(BUILT_SOURCES)', '', INTERNAL, VAR_ASIS);
+ }
+ }
+ } else {
+ Automake::Variable::define ('MAINTAINERCLEANFILES', VAR_MAKEFILE, '', TRUE,
+ '$(BUILT_SOURCES)', '', INTERNAL, VAR_ASIS)
+ if var ('BUILT_SOURCES');
+ }
+ $clean_files{'$(MAINTAINERCLEANFILES)'} = MAINTAINER_CLEAN
+ if var ('MAINTAINERCLEANFILES');
# Compute a list of "rm"s to run for each target.
my %rms = (MOSTLY_CLEAN, [],