HOWTO build arm-linux toolchain for ARM/XSCALE

2년여 리눅스를 실무에서 손놓고 있다 돌아와보니 너무 많은 발전이 있다.

크로스 컴파일러 버전이 2.9x, 3.4 정도 사용하던 것이 이제 4.x대로 훌쩍 넘어왔고,

예전의 ABI는 OABI(Old-ABI)라 불리면서, EABI(Embedded-ABI)를 커널 자체에서 지원해준다.

크로스 컴파일 환경이 EABI를 지원해야 한다는 것인데....

구글링하다 4.1대의 크로스 컴파일 환경 구축에 대한 mailing을 찾았다.



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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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