Mips Multilib issue

Mips Multilib issue

[ANDY KENNEDY]

All,

While attempting to build a toolchain for a new version of a MIPS system
(which needs multilib), I run across the following issue:

[ERROR]      configure: error: Need linker with .init_array/.fini_array support.
[ERROR]
[ERROR]  >>
[ERROR]  >>  Build failed in step 'Building for multilib subdir='32''
[ERROR]  >>        called in step 'Installing C library headers & start files'
[ERROR]  >>        called in step '(top-level)'

Which doesn't really tell me anything.  So, digging down a bit I find:

/big/home/akennedy/crosstool-ng-hg/.build/mips64-unknwon-linux-gnu/buildtools/lib/gcc/mips64-unknown-linux-gnu/4.8.2/../../../../mips64-unknown-linux-gnu/bin/ld: /tmp/ccSfwfwN.o: ABI is incompatible with that of the selected emulation
/big/home/akennedy/crosstool-ng-hg/.build/mips64-unknown-linux-gnu/buildtools/lib/gcc/mips64-unknown-linux-gnu/4.8.2/../../../../mips64-unknown-linux-gnu/bin/ld: failed to merge target specific data of file /tmp/ccSfwfwN.o
collect2: error: ld returned 1 exit status
configure:6163: $? = 1
configure:6176: result: no
configure:6179: error: Need linker with .init_array/.fini_array support.

in the config.log of build-libc-startfiles_32.  Even more interesting is
the linker line above it:

configure:6160: mips64-unknown-linux-gnu-gcc -mabi=32 -U_FORTIFY_SOURCE -EB -march=xlp -mabi=n32 -mtune=mips64r2 -mhard-float -O2 -o conftest conftest.c -static -nostartfiles -nostdlib

Which would probably be my whole problem.  The issue, as I see it, is
that

CT_TARGET_CFLAGS=' -EB -march=xlp -mabi=n32 -mtune=mips64r2 -mhard-float '


and I'm attempting to build for -mabi=32.  So, the resulting command of
the former would be -mabi=n32 (as it is the last in the list), Right?

Without really doing a HACK in scripts/build/libc/glibc-eglibc.sh-common
(one in which I recreate the CFLAGS without my HARDCODED -mabi=n32
deleted, and inserted back into the list AFTER my command runs), what
can I do to fix this?

Thanks,
Andy

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RE: Mips Multilib issue

[ANDY KENNEDY]

> -----Original Message-----
> From: crossgcc-owner@sourceware.org [mailto:crossgcc-owner@sourceware.org] On Behalf Of ANDY KENNEDY
> Sent: Monday, June 02, 2014 6:20 PM
> To: 'crossgcc@sourceware.org'
> Subject: Mips Multilib issue
> 
> All,
> 
> While attempting to build a toolchain for a new version of a MIPS system
> (which needs multilib), I run across the following issue:
> 
> [ERROR]      configure: error: Need linker with .init_array/.fini_array support.
> [ERROR]
> [ERROR]  >>
> [ERROR]  >>  Build failed in step 'Building for multilib subdir='32''
> [ERROR]  >>        called in step 'Installing C library headers & start files'
> [ERROR]  >>        called in step '(top-level)'
<snip>

Okay, I'm past that one (I'll have a patch for this whole thing when I
get done).  Now, I'm at "Installing pass-2 core C compiler" and I get
breakage when attempting to build a mabi=32 32/libgcc_s.so.1.tmp file.
The problem is that the xgcc compiler attempts to link in the
lib/libc.so file:

/sysroot/usr/lib/../lib/libc.so: error adding symbols: File in wrong format

Basically, to solve the other issue, what I had to do was:

CT_TARGET_CFLAGS="${CT_TARGET_CFLAGS//${CT_ARCH_ABI_CFLAG}}"

just after the if [ "${multi_dir}" != "." } ; do (near line 106 or so)
in the file scripts/build/libc/glibc-eglibc.sh-common.  Later, in the
SECOND if [ "${multi_dir} (near line 175 or so), I undo this by doing:

CT_TARGET_CFLAGS="${CT_TARGET_CFLAGS} ${CT_ARCH_ABI_CFLAG}"

which puts it back in there for me.

If any of you have multi-lib experience and would be willing to help me,
please throw advice my way!

Thanks,
Andy

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