原创 HOWTO build arm-linux toolchain for ARM/XSCALE 4.1

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HOWTO build arm-linux toolchain for ARM/XSCALE
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These instructions document how to build an arm-linux toolchain
for big-endian and little-endian target libraries.


0. Links accessed

   If you want to know how did I get to this...

http://ftp.snapgear.org/pub/snapgear/tools/arm-linux/build-arm-linux-3.4.4
http://sourceware.org/ml/libc-alpha/2006-02/msg00102.html
http://gcc.gnu.org/onlinedocs/gccint/Target-Fragment.html
http://documents.jg555.com/cross-lfs/mips64-64/index.html
http://xcgl-port.sourceforge.net/index.html
http://gcc.gnu.org/gcc-4.1/changes.html
http://linuxfromscratch.org/pipermail/faq/2004-July/000159.html


1. Download sites

   linux-libc-headers - http://ep09.pld-linux.org/~mmazur/linux-libc-headers
   binutils           - ftp://ftp.gnu.org/gnu/binutils
   glibc              - ftp://ftp.gnu.org/gnu/glibc
   gcc                - ftp://ftp.gnu.org/gnu/gcc


2. Packages used

   binutils-2.17.tar.bz2
   gcc-4.1-20060721.tar.bz2 (prerelease)
   linux-libc-headers-2.6.12.0.tar.bz2
   glibc-ports-2.4.tar.bz2
   glibc-2.4.tar.bz2


3. binutils-2.17

   tar jxvf binutils-2.17.tar.bz2
   cd binutils-2.17
   mkdir arm-linux
   cd arm-linux
   ../configure --target=arm-linux --with-lib-path=/usr/local/arm-linux/lib:/usr/local/arm-linux/lib/be:/usr/local/arm-linux/lib/soft-float:/usr/local/arm-linux/lib/be/soft-float
   make
   make install
   chmod 777 /usr/local/arm-linux


4. linux-libc-headers

   tar jxvf linux-libc-headers-2.6.12.0.tar.bz2
   cd linux-libc-headers-2.6.12.0/include
   ln -s asm-arm asm


5. gcc-4.1.2 (gcc only)

   tar jxvf gcc-4.1-20060721.tar.bz2
   cd gcc-4.1-20060721

   cp $(ATTACHED t-linux file) gcc/config/arm/
   vi gcc/config/arm/linux-elf.h
     - remove line that defines LIBGCC_SPEC

   mkdir arm-linux
   cd arm-linux
   ../configure --target=arm-linux --disable-shared --disable-threads \
                --prefix=/usr/local --with-gnu-as --with-gnu-ld --enable-multilib \
                --enable-languages=c --disable-libmudflap --disable-libssp
   make
   make install


6. glibc-2.4 (big-endian/soft-float)

   tar jxvf glibc-2.4.tar.bz2
   cd glibc-2.4

   tar jxvf ../glibc-ports-2.4.tar.bz2
   mv glibc-ports ports

   vi config.make.in
      - change "slibdir = @...@" to "slibdir = @libdir@"
   vi Makeconfig
      - remove any occurrences of -lgcc_eh

   mkdir arm-linux
   cd arm-linux

   echo "libc_cv_forced_unwind=yes" > config.cache
   echo "libc_cv_c_cleanup=yes"    >> config.cache

   CC="arm-linux-gcc -mbig-endian -msoft-float -finline-limit=10000" \
   AS="arm-linux-as -mbig-endian" \
   LD="arm-linux-ld -EB" \
   ../configure --host=arm-linux --build=i686-pc-linux-gnu \
                --with-headers=<path_to_linux_libc_headers>/include \
                --enable-add-ons --enable-shared --prefix=/usr/local/arm-linux \
                --without-fp --libdir=/usr/local/arm-linux/lib/be/soft-float \
                --cache-file=config.cache
   make
   make install


7. glibc-2.4 (big-endian)

   (you must be in "glibc-2.4/arm-linux" directory)

   rm -rf *
   echo "libc_cv_forced_unwind=yes" > config.cache
   echo "libc_cv_c_cleanup=yes"    >> config.cache

   CC="arm-linux-gcc -mbig-endian -finline-limit=10000" \
   AS="arm-linux-as -mbig-endian" \
   LD="arm-linux-ld -EB" \
   ../configure --host=arm-linux --build=i686-pc-linux-gnu \
                --with-headers=<path_to_linux_libc_headers>/include \
                --enable-add-ons --enable-shared --prefix=/usr/local/arm-linux \
                --libdir=/usr/local/arm-linux/lib/be --cache-file=config.cache
   make
   make install


8. glibc-2.4 (little-endian/soft-float)

   (you must be in "glibc-2.4/arm-linux" directory)

   rm -rf *
   echo "libc_cv_forced_unwind=yes" > config.cache
   echo "libc_cv_c_cleanup=yes"    >> config.cache

   CC="arm-linux-gcc -msoft-float -finline-limit=10000" \
   AS="arm-linux-as" \
   LD="arm-linux-ld" \
   ../configure --host=arm-linux --build=i686-pc-linux-gnu \
                --with-headers=<path_to_linux_libc_headers>/include \
                --enable-add-ons --enable-shared --prefix=/usr/local/arm-linux \
                --without-fp --libdir=/usr/local/arm-linux/lib/soft-float \
                --cache-file=config.cache
   make
   make install


9. glibc-2.4 (little-endian)

   (you must be in "glibc-2.4/arm-linux" directory)

   rm -rf *
   echo "libc_cv_forced_unwind=yes" > config.cache
   echo "libc_cv_c_cleanup=yes"    >> config.cache

   CC="arm-linux-gcc -finline-limit=10000" \
   AS="arm-linux-as" \
   LD="arm-linux-ld" \
   ../configure --host=arm-linux --build=i686-pc-linux-gnu \
                --with-headers=<path_to_linux_libc_headers>/include \
                --enable-add-ons --enable-shared --prefix=/usr/local/arm-linux \
                --cache-file=config.cache
   make
   make install


10. gcc 4.1.2 (c++, objc and fortran)

   cd gcc-4.1-20060721

   vi gcc/config/arm/t-linux
      - remove all "-Dinhibit_libc" occurrences

   cd arm-linux
   rm -rf *
   ../configure --target=arm-linux --prefix=/usr/local --enable-__cxa_atexit \
                --enable-c99 --enable-long-long --enable-multilib --enable-shared \
                --disable-libmudflap --disable-libssp --enable-languages=c,c++,fortran,objc \
                --with-headers=/usr/local/arm-linux/include
   make
   make install


11. Create the tar.gz file

   cd /
   strip /usr/local/arm-linux/bin/*
   strip /usr/local/bin/arm-linux-*
   tar cvzf /tmp/arm-linux-tools-xxxxxxxx.tar.gz \
        /usr/local/arm-linux \
 /usr/local/bin/arm-linux-* \
        /usr/local/bin/genext2fs \
        /usr/local/include/c++/4.1.2 \
 /usr/local/lib/gcc/arm-linux/4.1.2 \
        /usr/local/libexec/gcc/arm-linux/4.1.2


12. If everything works fine it may take ~8 hours (on a good machine )

    -- Thierry Panthier


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APPENDIX A  --  modified t-linux for gcc-4.1.2

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# Just for these, we omit the frame pointer since it makes such a big
# difference. It is then pointless adding debugging.

TARGET_LIBGCC2_CFLAGS = -fno-inline -fomit-frame-pointer -fPIC -Dinhibit_libc
LIBGCC2_DEBUG_CFLAGS  = -g0

# Don't build enquire
ENQUIRE=

LIB1ASMSRC = arm/lib1funcs.asm

LIB1ASMFUNCS = _udivsi3 _divsi3 _umodsi3 _modsi3 _dvmd_tls \
 _bb_init_func _call_via_rX _interwork_call_via_rX \
 _lshrdi3 _ashrdi3 _ashldi3 \
 _negdf2 _addsubdf3 _muldivdf3 _cmpdf2 _unorddf2 _fixdfsi _fixunsdfsi \
 _truncdfsf2 _negsf2 _addsubsf3 _muldivsf3 _cmpsf2 _unordsf2 \
 _fixsfsi _fixunssfsi _floatdidf _floatdisf

MULTILIB_OPTIONS  = mlittle-endian/mbig-endian mhard-float/msoft-float
MULTILIB_DIRNAMES = le be hard-float soft-float
MULTILIB_MATCHES  = mbig-endian=mbe mlittle-endian=mle

EXTRA_MULTILIB_PARTS = crtbegin.o crtbeginS.o crtend.o crtendS.o crti.o crtn.o

LIBGCC = stmp-multilib
INSTALL_LIBGCC = install-multilib

T_CFLAGS = -Dinhibit_libc

# Assemble startup files.
$(T)crti.o: $(srcdir)/config/arm/crti.asm $(GCC_PASSES)
 $(GCC_FOR_TARGET) $(GCC_CFLAGS) $(MULTILIB_CFLAGS) $(INCLUDES) \
 -c -o $(T)crti.o -x assembler-with-cpp $(srcdir)/config/arm/crti.asm

$(T)crtn.o: $(srcdir)/config/arm/crtn.asm $(GCC_PASSES)
 $(GCC_FOR_TARGET) $(GCC_CFLAGS) $(MULTILIB_CFLAGS) $(INCLUDES) \
 -c -o $(T)crtn.o -x assembler-with-cpp $(srcdir)/config/arm/crtn.asm
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