Bug 10404

Summary: MIPS: Use MACHINEOVERRIDES and reduce duplication in various recipes due to mips variants
Product: [Build System, Metadata & Runtime] OE-Core Reporter: Zubair Lutfullah Kakakhel <Zubair.Kakakhel>
Component: coreAssignee: Zubair Lutfullah Kakakhel <Zubair.Kakakhel>
Status: RESOLVED FIXED QA Contact:
Severity: enhancement    
Priority: Medium CC: bluelightning, mark.hatle, meta.mr.watcher, meta.watcher, richard.purdie
Version: 2.3   
Target Milestone: 2.3   
Hardware: x86   
OS: Multiple   
Whiteboard:
OS type for building Yocto: --- Type of Regression: ---
Verified: Documentation change: No (bug/feature does not impact docs)

Description Zubair Lutfullah Kakakhel 2016-10-10 12:07:27 UTC 
There are many MIPS ISA + ABI combinations. 
And there are recipes which have to duplicate information for each variant.
Its possible to use MACHINEOVERRIDES to reduce duplication.

Some discussion on this 
http://lists.openembedded.org/pipermail/openembedded-core/2016-October/127388.html
http://lists.openembedded.org/pipermail/openembedded-core/2016-October/127393.html

Extract from email by Richard Purdie
---

Very roughly speaking, you'd add something like:

MACHINEOVERRIDES =. "mipsarch:"

to arch-mips.inc then you could do:

diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
index 54a587f..7bd8716 100644
--- a/meta/conf/bitbake.conf
+++ b/meta/conf/bitbake.conf
@@ -528,16 +528,7 @@ BUILDSDK_LDFLAGS = "-Wl,-O1"
 
 LINKER_HASH_STYLE ??= "gnu"
 # mips does not support GNU hash style therefore we override
-LINKER_HASH_STYLE_mips = "sysv"
-LINKER_HASH_STYLE_mipsel = "sysv"
-LINKER_HASH_STYLE_mips64 = "sysv"
-LINKER_HASH_STYLE_mips64el = "sysv"
-LINKER_HASH_STYLE_mips64n32 = "sysv"
-LINKER_HASH_STYLE_mips64eln32 = "sysv"
-LINKER_HASH_STYLE_mipsisa32r6 = "sysv"
-LINKER_HASH_STYLE_mipsisa32r6el = "sysv"
-LINKER_HASH_STYLE_mipsisa64r6 = "sysv"
-LINKER_HASH_STYLE_mipsisa64r6el = "sysv"
+LINKER_HASH_STYLE_mipsarch = "sysv"
 
 TARGET_LINK_HASH_STYLE ?= "${@['-Wl,--hash-style=gnu',''][d.getVar('LINKER_HASH_STYLE', True) != 'gnu']}"

---
Comment 1 Zubair Lutfullah Kakakhel 2016-11-08 09:10:59 UTC 
Most of the work has been done and the a patch series has already been sent out.

https://patchwork.openembedded.org/patch/133655/

Some minor tweaks needed for the next revision.
Comment 2 Zubair Lutfullah Kakakhel 2016-11-16 17:24:28 UTC 
Patches have been applied.

http://git.openembedded.org/openembedded-core/commit/?id=0d2205f26e5ece089630f72af2bd5f0931e851c3

Thanks
ZubairLK
Comment 3 Zubair Lutfullah Kakakhel 2016-11-16 17:25:25 UTC 
I think I misunderstood the status: Accepted.

Marking as resolved