[Build System] expander.rules looks wrong

[diver]

This is self made image built on linux, hrev44410 gcc2hybrid.

-e "application/x-7z-compressed"	.7z	"7za l %s"	"7za x -y %s"
"application/x-xz"	.tar.xz	"tar -Jtvf %s"	"tar -Jxvf %s"
"application/x-xz"	.txz	"tar -Jtvf %s"	"tar -Jxvf %s"
"application/x-xz"	.xz	"echo %s | sed 's/.xz$//g'"	"xz -df %s"

​http://cgit.haiku-os.org/haiku/tree/build/jam/OptionalPackages#n1492

[bonefish]

If anyone want to fix this, feel free. But eventually the expander rule handling should be moved out of the build system anyway. Cf. #8494.

[diver]

This fixes/workaround the issue:

diff --git a/build/jam/ImageRules b/build/jam/ImageRules
index 48ebb82..82190f9 100644
--- a/build/jam/ImageRules
+++ b/build/jam/ImageRules
@@ -908,7 +908,7 @@ rule AddEntryToHaikuImageExpanderRuleFile file : entry

 actions BuildHaikuImageExpanderRules
 {
-       echo -e "$(HAIKU_IMAGE_EXPANDER_RULES_ENTRIES)" | tr '!' '\n' > $(1)
+       /bin/echo -e "$(HAIKU_IMAGE_EXPANDER_RULES_ENTRIES)" | tr '!' '\n' > $(1)
 }

 rule AddExpanderRuleToHaikuImage mimetype : extension : list : extract

[bonefish]

The problem is that the -e switch is not mandated (or even mentioned) by POSIX, so neither /bin/sh nor /bin/echo have to implement it. Apparently your Linux doesn't use bash or another shell that supports the switch as /bin/sh. The GNU coreutils echo command does support -e though, so on all GNU/Linux distributions your work-around would work. It would, however, break a currently correctly working FreeBSD, since that has a /bin/sh with -e support, but a /bin/echo without.

A work-around that should work for you is to set the JAMSHELL environment variable to /bin/bash -c.

[diver]

$ lsb_release -d
Description:    Ubuntu 10.04.4 LTS

$ bash --version
GNU bash, version 4.1.5(1)-release (i486-pc-linux-gnu)
Copyright (C) 2009 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

This is free software; you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

[diver]

This one is probably fixed now. Ingo?

[bonefish]

Indeed. The troublesome rule has been removed. Additional expander rules are provided by the respective packages.