Bug 1231

Summary:	(sparc) Linux kernel fails to build
Product:	buildroot	Reporter:	The Duke <thedukevip>
Component:	Other	Assignee:	unassigned
Status:	RESOLVED WONTFIX
Severity:	major	CC:	buildroot
Priority:	P2
Version:	unspecified
Target Milestone:	2010.05
Hardware:	PC
OS:	Linux
Host:	x86_64	Target:	sparc
Build:	2010.02

Description The Duke 2010-03-03 00:13:31 UTC

Hello,
I'm using buildroot 2010.02, configure it for sparc (not sparc64), also the kernel is properly configured (sparc)
after make, (or make linux26, after building the toolchain etc) I get the followin error in the last stage of kernel building !!

  LD      vmlinux
  SYSMAP  System.map
  SYSMAP  .tmp_System.map
  BTFIX   arch/sparc/boot/btfix.S
  AS      arch/sparc/boot/btfix.o
  LD      arch/sparc/boot/image
arch/sparc/kernel/head_32.o: In function `current_pc':
(.head.text+0xc040): relocation truncated to fit: R_SPARC_WDISP22 against `.init.text'
arch/sparc/kernel/built-in.o:(.fixup+0x4): relocation truncated to fit: R_SPARC_WDISP22 against `.text'
arch/sparc/kernel/built-in.o:(.fixup+0xc): relocation truncated to fit: R_SPARC_WDISP22 against `.text'
arch/sparc/kernel/built-in.o:(.fixup+0x14): relocation truncated to fit: R_SPARC_WDISP22 against `.text'
arch/sparc/kernel/built-in.o:(.fixup+0x1c): relocation truncated to fit: R_SPARC_WDISP22 against `.text'
arch/sparc/kernel/built-in.o:(.fixup+0x28): relocation truncated to fit: R_SPARC_WDISP22 against `.text'
arch/sparc/kernel/built-in.o:(.fixup+0x30): relocation truncated to fit: R_SPARC_WDISP22 against `.text'
arch/sparc/kernel/built-in.o:(.fixup+0x38): relocation truncated to fit: R_SPARC_WDISP22 against `.text'
arch/sparc/kernel/built-in.o:(.fixup+0x40): relocation truncated to fit: R_SPARC_WDISP22 against `.text'
arch/sparc/kernel/built-in.o:(.fixup+0x48): relocation truncated to fit: R_SPARC_WDISP22 against `.text'
arch/sparc/kernel/built-in.o:(.fixup+0x50): additional relocation overflows omitted from the output
make[2]: *** [arch/sparc/boot/image] Error 1
make[1]: *** [zImage] Error 2
make[1]: Leaving directory `/media/Data/PFE/buildroot/output/build/linux-2.6.32.9'
make: *** [/media/Data/PFE/buildroot/output/build/linux-2.6.32.9/arch/sparc/boot/zImage] Error 2

Any help ?! At least a useful debugging method !

Comment 1 Thomas Petazzoni 2010-07-18 19:43:52 UTC

Can you still reproduce the issue with Buildroot 2010.05 ?

It seems to be either a toolchain bug or a kernel bug (more likely a toolchain bug). Sparc support in Buildroot isn't widely used, as Sparc isn't used much in the embedded space.

Comment 2 Thomas Petazzoni 2010-07-26 14:44:38 UTC

As Sparc isn't really what we could call a CPU architecture widely used in embedded systems, the core Buildroot team is not really willing to spend time fixing Sparc related issues (we already have tons of other issues on more important embedded architectures like ARM, PowerPC, MIPS, AVR32 and others). So, unless someone (you ?) steps in with a fix for this, we are not going to fix it.

We will probably mark the sparc and sparc64 architectures as deprecated in Buildroot some day.