[OpenWrt-Devel] OpenWRT built on OpenSuSE (x86_64) fails

Fri Aug 29 16:35:50 EDT 2014

Update: need help.

I found the problem.

OpenSuSE defines, by default, the CONFIG_SITE as:

CONFIG_SITE=/usr/share/site/x86_64-unknown-linux-gnu

This is defined in /etc/profile.d/site.sh from package site-config*.rpm,
described as:

Site configuration for autoconf based configure scripts provides smart
defaults for paths that are not specified.

Now, when building OpenWRT, if the CONFIG_SITE is defined (even empty), its
value is replaced by $TOPDIR/include/site/i486-openwrt-linux-uclibc, that
is actually the target and not the host. This might work for target
compilation but it will definitely fail for host compilation.

As a workaround, just unset the CONFIG_SITE before make.

Now, how to fix fix? It affects trunk and BB.

Regards,

---
     Luiz Angelo Daros de Luca, Me.
            luizluca at gmail.com

2014-08-28 20:19 GMT-03:00 Luiz Angelo Daros de Luca <luizluca at gmail.com>:

> Hello,
>
> I'm trying to compile OpenWRT on an OpenSuSE 13.1 x86_64 targeting x86
> generic (default config). However, I'm getting a strange behavior. In thunk
> and BB, some packages that compiles for host machine are having problems
> with pointer size:
>
> openwrt/trunk/build_dir/host/grub-2.02~beta2 $ arch
> x86_64
> openwrt/trunk/build_dir/host/grub-2.02~beta2 $ grep SIZEOF_VOID_P config*h
> config.h:#define BUILD_SIZEOF_VOID_P 8
> *config-util.h:#define SIZEOF_VOID_P 4*
>
> SIZEOF_VOID_P in host should be 8 if compiled for x86_64. And I get x86_64
> binaries:
>
> $ file build_dir/host/grub-2.02~beta2/grub-install
> build_dir/host/grub-2.02~beta2/grub-install: *ELF 64-bit* LSB executable,
> x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for
> GNU/Linux 2.6.32, BuildID[sha1]=5082730f329f77b19783a7d9f6128bc6f3a45b10,
> not stripped
>
> I also get related warnings:
>
> ./include/grub/crypto.h:286:9: warning: cast from pointer to integer of
> different size [-Wpointer-to-int-cast]
>      || ((grub_addr_t) outptr & (sizeof (grub_uint64_t) - 1))))
>
> As it compiles x86_64 program considering a pointer size from 32-bit,
> programs did not work.
>
> If I run the configure manually (with same args and PATH), the problem is
> not present:
>
> trunk/build_dir/host/grub-2.02~beta2.new $ grep SIZEOF_VOID_P config*h
> config.h:#define BUILD_SIZEOF_VOID_P 8
> *config-util.h:#define SIZEOF_VOID_P 8*
>
> I isolated the problem to be the usage of
> CONFIG_SITE=/home/REDETRESC/luizluca/prog-local/openwrt/trunk/include/site/i486-openwrt-linux-uclibc
>
> Is the usage of i486-openwrt-linux-uclibc expected? Should it be
> x86_64-openwrt-linux-uclibc for host compile?
>
> In Ubuntu, I get no problem.
>
> In AA, I had no problem. The configure args from grub in AA and grub2 from
> BB/trunk have some differences. In AA, I have a single
> --target=x86_64-suse-linux but grub binaries are 32bit (but other
> host/compile packages are 64-bit).
>
> In BB/trunk I have duplicated --target= arg in configure. The first is
> --target=x86_64-suse-linux but the second one is
> --target=i486-openwrt-linux-uclibc. This might trigger cross compiling.
>
> This is host configure in BB/trunk:
>
> (cd
> /home/REDETRESC/luizluca/prog-local/openwrt/trunk/build_dir/host/grub-2.02~beta2/;
> if [ -x configure ]; then cp -fpR
> /home/REDETRESC/luizluca/prog-local/openwrt/trunk/scripts/config.{guess,sub}
> /home/REDETRESC/luizluca/prog-local/openwrt/trunk/build_dir/host/grub-2.02~beta2//
> &&  /bin/bash ./configure CC="gcc" CFLAGS="-O2
> -I/home/REDETRESC/luizluca/prog-local/openwrt/trunk/staging_dir/host/include
> -g"
> CPPFLAGS="-I/home/REDETRESC/luizluca/prog-local/openwrt/trunk/staging_dir/host/include"
> LDFLAGS="-L/home/REDETRESC/luizluca/prog-local/openwrt/trunk/staging_dir/host/lib"
> SHELL="/bin/bash" *--target=x86_64-suse-linux *--host=x86_64-suse-linux
> --build=x86_64-suse-linux --program-prefix="" --program-suffix=""
> --prefix=/home/REDETRESC/luizluca/prog-local/openwrt/trunk/staging_dir/host
> --exec-prefix=/home/REDETRESC/luizluca/prog-local/openwrt/trunk/staging_dir/host
> --sysconfdir=/home/REDETRESC/luizluca/prog-local/openwrt/trunk/staging_dir/host/etc
> --localstatedir=/home/REDETRESC/luizluca/prog-local/openwrt/trunk/staging_dir/host/var
> --sbindir=/home/REDETRESC/luizluca/prog-local/openwrt/trunk/staging_dir/host/bin*
> --target=i486-openwrt-linux-*uclibc
> --sbindir="/home/REDETRESC/luizluca/prog-local/openwrt/trunk/staging_dir/host/bin"
> --disable-werror --disable-libzfs --disable-nls ; fi )
> configure: loading site script
> /home/REDETRESC/luizluca/prog-local/openwrt/trunk/include/site/i486-openwrt-linux-uclibc
> configure: loading site script
> /home/REDETRESC/luizluca/prog-local/openwrt/trunk/include/site/i486-openwrt-linux-uclibc
> checking build system type... *x86_64-suse-linux-gnu*
> checking host system type...* x86_64-suse-linux-gnu*
> checking target system type...* i486-openwrt-linux-uclibc*
>
> In Makefile, I have:
>
> package/boot/grub2/Makefile:
>  54 HOST_CONFIGURE_ARGS += \
>  55     --target=$(REAL_GNU_TARGET_NAME) \
>
> If I remove target, it does not change.
>
> Do you guys have any clue?
>
> Regards,
>
> ---
>      Luiz Angelo Daros de Luca, Me.
>             luizluca at gmail.com
>
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