From 40702abf3156fa92ef70ee5d445fe52dd6cfbc7d Mon Sep 17 00:00:00 2001
From: Robert Yang <liezhi.yang@windriver.com>
Date: Thu, 20 Sep 2018 18:48:48 +0800
Subject: [PATCH] ExtUtils/MM_Unix.pm: fix race issues

Fixed a race issue when compile libhtml-parser-perl and others who use MakeMaker:
[snip]
chmod 755 blib/arch/auto/HTML/Parser/Parser.so 
chmod 644 "Parser.bs"
[snip]

The rule INST_DYNAMIC removes '.bs' file which are generated by BOOTSTRAP, but
the have no dependencies, so there is a race issue:

BOOTSTRAP:
    touch foo.bs
    chmod 755 foo.bs

INST_DYNAMIC:
    rm -fr foo.bs

The error would happen when INST_DYNAMIC removes foo.bs after BOOTSTRAP touched
it but before chmod on it.

Upstream-Status: Backport [https://github.com/Perl-Toolchain-Gang/ExtUtils-MakeMaker/commit/44e95e717372abe2b0a6ee55de4b686760b65360]

Note, This is not a real backport, upstream has totally refactored it in one
patch, please see the link above, it's not a good idea to backport such a big
patch, I just referred it to fix the problem in a simple way. I mark it as
backport is because we can drop the patch after upgrade perl to 5.26 or 5.28.

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
---
 cpan/ExtUtils-MakeMaker/lib/ExtUtils/MM_Unix.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cpan/ExtUtils-MakeMaker/lib/ExtUtils/MM_Unix.pm b/cpan/ExtUtils-MakeMaker/lib/ExtUtils/MM_Unix.pm
index 95d9761..9cabe2d 100644
--- a/cpan/ExtUtils-MakeMaker/lib/ExtUtils/MM_Unix.pm
+++ b/cpan/ExtUtils-MakeMaker/lib/ExtUtils/MM_Unix.pm
@@ -933,7 +933,7 @@ OTHERLDFLAGS = '.$ld_opt.$otherldflags.'
 INST_DYNAMIC_DEP = '.$inst_dynamic_dep.'
 INST_DYNAMIC_FIX = '.$ld_fix.'
 
-$(INST_DYNAMIC): $(OBJECT) $(MYEXTLIB) $(INST_ARCHAUTODIR)$(DFSEP).exists $(EXPORT_LIST) $(PERL_ARCHIVEDEP) $(PERL_ARCHIVE_AFTER) $(INST_DYNAMIC_DEP)
+$(INST_DYNAMIC): $(OBJECT) $(MYEXTLIB) $(INST_ARCHAUTODIR)$(DFSEP).exists $(EXPORT_LIST) $(PERL_ARCHIVEDEP) $(PERL_ARCHIVE_AFTER) $(INST_DYNAMIC_DEP) $(BOOTSTRAP)
 ');
     if ($armaybe ne ':'){
 	$ldfrom = 'tmp$(LIB_EXT)';
-- 
2.7.4