Re: Help in cross-compiler

["??" <kevin@gv.com.tw>]

hi, chienlung,
try this when prepareing header:

rm -rf $PREFIX/mips-linux/include
mkdir -p $PREFIX/mips-linux/include
rm -rf $PREFIX/mips-linux/include/linux
rm -rf $PREFIX/mips-linux/include/asm-mips
rm -rf $PREFIX/mips-linux/include/asm
cp -af ./linuxmips-2.4.x/include/linux $PREFIX/mips-linux/include
cp -af ./linuxmips-2.4.x/include/asm-mips $PREFIX/mips-linux/include
ln -sf $PREFIX/mips-linux/include/asm-mips $PREFIX/mips-linux/include/asm

(linuxmips-2.4.x is the source of your mips-linux kernel)
in your message, i see register "ax" which is a x86 register
 which means you are using x86 header when building compiler that will
generate mips code
this is of course incorrect

/usr/include/asm & /usr/include/linux normally linked to
/usr/src/linux/include/asm & /usr/src/linux/include/linux
and /usr/src/linux is normally linked to x86 kernel source on pc

best regards,

----- Original Message -----
From: "Chien-Lung Wu" <cwu@deltartp.com>
To: <linux-mips@linux-mips.org>
Cc: "Chien-Lung Wu" <cwu@deltartp.com>
Sent: Wednesday, December 18, 2002 11:57 PM
Subject: Help in cross-compiler


> Hi,
>
> I am working on the embedded linux system on bug endian mips (mips-linux).
> As I understand, I need to get the cross-compiler work on my linux-i686
host
> (redhat 7.2).
> Following the Bradly's "Building a modern MIPS cross-toolchain for linux",
>  I download following packages:
>
> binutils-2.11
> gcc-2.95
> glibc-2.2.5
> glibc-linuxthreads-2.2.5
>
> And following the procedue:
> 1. build the cross-binutils
> tar -xzf binutils-2.11.tar.gz
>
> mkdir mips-binutils-2.11
> cd mips-binutils-2.11
>
> ../binutils-2.11/configure --target=mips-linux \
> --prefix=/usr/toolchain-mips
>
> --libdir='${exec_prefix}'/mips-linux/i386-linux-lib
>
> make
> make install
> cd ..
>
> Everything is fine.
>
> 2. build the C cross-compiler
>
> tar -xzf gcc-2.95.tar.gz
> mkdir mips-gcc-2.95
> cd mips-gcc-2.95
>
> ../gcc-2.95/configure --target=mips-linux
> --prefix=/usr/toolchain-mips --enable-languages=c \
> --disable-shared --with-headers=/usr/include
>
>
> make
> make install
>   cd ..
>
> As thw warning, The --with-headers causes configure to make a copy of the
> headers at the specified location into
/usr/local/mipsel-linux/sys-includes
> and to run fixincludes on them. These headers are then used by xgcc during
> the cross-building of libgcc.a (which is part of building the static C
> compiler). This means that you'll need some MIPS host headers laying
around
> somewhere, including the linux and asm subdirectories from the Linux
kernel.
> Maybe you have them from your previous cross-compiler installation. If
not,
> there are various creative ways of obtaining them, including grabbing them
> from some MIPS distribution. There is also the dubious hack of using your
> hosts's headers (--with-headers=/usr/include) instead. The key word here
is
> "dubious"; you have been warned.
> Since I can not get "some MIPS host headers", I use the dubious hack.
> And it seems get the build of C cross-compiler work.
> 3. Cross-build glibc
> tar -xzf glibc.tar.gz
> cd glibc
> patch -i ../glibc-2.2.5-mips-build-gmon.diff
> tar -xzf ../glibc-linuxthreads.tar.gz
> cd ..
> mkdir mipsel-glibc
> cd mipsel-glibc
>
> CFLAGS="-O2 -g -finline-limit=10000" ../glibc/configure
> --host=i686-linux\
>   --enable-add-ons --prefix=/usr
>
> make
> make install install_root=/usr/local/mips-linux/glibc
> cd ..
>
> cp -a /usr/local/mips-linux/glibc/lib/*
> /usr/toolchain/mips-linux/lib/
> cp -a /usr/local/mips-linux/glibc/usr/include/*
> /usr/toolchain/mips-linux/include/
> cp -a /usr/local/mips-linux/glibc/usr/lib/*
> /usr/toolchain/mips-linux/lib/
>
> GROUP ( /usr/toolchain/mips-linux/lib/libc.so.6
>   /usr/toolchain/mipsel-linux/lib/libc_nonshared.a )
>
> It works fine!
>
> 4. Build the final C and C++ cross-compilers
> cd mipsel-gcc
> ../gcc/configure --target=mipsel-linux  prefic=/usr/toolchain
> --enable-languages=c,c++
> make
> make install
>
>
> However, I got the error_message:
>
> home/cross-compiler1/mips-gcc-2.95/gcc/xgcc
> -B/home/cross-compiler1/mips-gcc-2.95/gcc/
> -B/usr/toolchain1-mips/mips-linux/bin/ -c -g -O2 -fvtable-thunks
> -D_GNU_SOURCE
> -fno-implicit-templates -I../../../gcc-2.95/libstdc++
> -I../../../gcc-2.95/libstdc++/stl -I../libio
> -I../../../gcc-2.95/libstdc++/../libio -nostdinc++ -D_IO_MTSAFE_IO
> ../../../gcc-2.95/libstdc++/cmathi.cc
> In file included from
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/math.h:350,
>     from ../../../gcc-2.95/libstdc++/cmath:7,
>     from ../../../gcc-2.95/libstdc++/cmathi.cc:7:
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:
>       In function `double atan2(double, double)':
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:426:
>       unknown register name `st(1)' in `asm'
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:
>       In function `float atan2f(float, float)':
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:426:
>       unknown register name `st(1)' in `asm'
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:
>       In function `long double atan2l(long double, long double)':
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:426:
>       unknown register name `st(1)' in `asm'
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:
>       In function `long double __atan2l(long double, long double)':
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:427:
>       unknown register name `st(1)' in `asm'
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:
>       In function `double fmod(double, double)':
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:430:
>     unknown register name `ax' in `asm'
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:
>     In function `float fmodf(float, float)':
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:430:
>     unknown register name `ax' in `asm'
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:
>     In function `long double fmodl(long double, long double)':
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:430:
>     unknown register name `ax' in `asm'
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:
>     In function `double atan(double)':
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:467:
>     unknown register name `st(1)' in `asm'
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:
>     In function `float atanf(float)':
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:467:
>     unknown register name `st(1)' in `asm'
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:
>     In function `long double atanl(long double)':
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:467:
>     unknown register name `st(1)' in `asm'
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:
>     In function `double log1p(double)':
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:540:
>     unknown register name `st(1)' in `asm'
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:
>     In function `float log1pf(float)':
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:540:
>     unknown register name `st(1)' in `asm'
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:
>     In function `long double log1pl(long double)':
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:540:
>     unknown register name `st(1)' in `asm'
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:
>     In function `long int lrintf(float)':
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:611:
>     unknown register name `st' in `asm'
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:
>     In function `long int lrint(double)':
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:616:
>     unknown register name `st' in `asm'
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:
>     In function `long int lrintl(long double)':
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:621:
>     unknown register name `st' in `asm'
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:
>     In function `long long int llrintf(float)':
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:634:
>     unknown register name `st' in `asm'
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:
>     In function `long long int llrint(double)':
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:639:
>     unknown register name `st' in `asm'
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:
>     In function `long long int llrintl(long double)':
>
>
/usr/toolchain1-mips/lib/gcc-lib/mips-linux/2.95/../../../../mips-linux/sys-
> include/bits/mathinline.h:644:
>     unknown register name `st' in `asm'
>     make[1]: *** [cmathi.o] Error 1
>     make[1]: Leaving directory
>     `/home/cross-compiler1/mips-gcc-2.95/mips-linux/libstdc++'
>     make: *** [all-target-libstdc++] Error 2
>
> Does any have any idea to fix this error?
> When I build the C cross-compiler, I use the "dubious hack"
> --with-headers=/usr/include copy the "MIPS host header files". Are there
any
> other ways to copy the MIPS-host headers?
> Thanks for your help.
>
> Chien-Lung
>
>
>
>
>