Re: cross-compiled native compiler: ld can't find crt1.o

[wim torfs <wim dot torfs3 at pandora dot be>]

> 
> You probably forgot to supply the --build directive. Only when both --host
> and --build are supplied (and are different), glibc configures itself for
> cross-compilation. (And so, does not run those tests)
> 
> HTH,
> Arno
> 


Thanks, that did the thing. 

I was wondering, I finally managed to compile the glibc, but had to do
some tricks. Could someone confirm this is normal or not? 

I used binutils-2.15.91.0.1, gcc-3.4.1, glibc-2.3.3 and kernel-2.6.7 

I know, I 'm making it hard by using the latest sources, but I'm using
it for my thesis and I would like to do 'real time' stuff on an arm.
therefore, my opinion was that by taking the latest sources, that there
would be more support in the sources for rt stuff. Not sure whether this
is right though?? 


anyway, here are the thing I 've done, I would appreciate it if someone
could tell me whether this is ok (or not).

I'm compiling for the S3C4530 (samsung arm without mmu)
I haven't done any cpu optimization yet, I first wanted to make a
working toolchain.
I based my commands mostly on the crosstool.sh, as many of you will
notice.


environent variables:

TARGET=arm-linux 
PREFIX=/opt/arm/tools
TARGET_PREFIX=$PREFIX/$TARGET

mkdir -p $TARGET_PREFIX/include/gnu
mkdir -p $TARGET_PREFIX/lib
mkdir -p $TARGET_PREFIX/usr/lib

1) kernel headers:

patch linux 2.6.7 kernel with linux-2.6.7-hsc0.patch
(patch for the kernel to support nommu archs)

$ cd linux-2.6.7
$ make ARCH=armnommu menuconfig
$ make ARCH=armnommu include/asm \
		include/linux/version.h \
		include/asm-armnommu/.arch

$ cp -r include/linux $TARGET_PREFIX/include
$ cp -r include/asm $TARGET_PREFIX/include/asm
$ cp -r include/asm-generic $TARGET_PREFIX/include
$ cp -r include/asm-arm $TARGET_PREFIX/include

the last step is necessary because armnommu refers to asm-arm




all further compiles happen in a separate build dir

2) binutils-2.15.91.0.1

$ ../binutils-2.15.91.0.1/configure --prefix=$PREFIX \
				--target=$TARGET \
				--disable-nls \
				--with-sysroot=$TARGET_PREFIX

$ make all
$ make install


3) glibc headers

$ CC=gcc ../glibc-2.3.3/configure --prefix=/usr \
				--host=$TARGET \
				--build=i686-linux \
				--disable-sanity-checks \
				--with-headers=$TARGET_PREFIX/include

$ make sysdeps/gnu/errlist.c
$ mkdir stdio-common
$ touch stdio-common/errlist-compat.c
$ make cross-compiling=yes \
	install_root=$TARGET_PREFIX \
	prefix="" \
	install-headers
				
$ touch $TARGET_PREFIX/include/gnu/stubs.h
$ cp ../glibc-2.3.3/include/features.h $TARGET_PREFIX/include
$ cp bits/stdio_lim.h $TARGET_PREFIX/include/bits





4)gcc-3.4.1 first time

$ ../gcc-3.4.1/configure --prefix=$PREFIX \
			--target=$TARGET \
			--build=i686-linux \
			--with-local-prefix=$TARGET_PREFIX/include \
			--disable-multilib \
			--with-newlib \
			--with-headers=$TARGET_PREFIX/include \
			--disable-nls \
			--disable-threads \
			--disable-shared \
			--enable-languages=c

$ make all-gcc
$ make install-gcc



5) glibc-2.3.3 full install

->patch1: (resolves BUS_ISA undeclared error)
$ vi ../glibc-2.3.3/sysdeps/unix/sysv/linux/arm/ioperm.c

add:
#include <linux/input.h>

->patch2: (resolves fallback_frame_state_for undeclared)
$ touch ../glibc-2.3.3/sysdeps/arm/framestate.c

->patch3: (resolves ld: cannot find -lgcc_eh)
$ vi ../glibc-2.3.3/Makeconfig

change the line 
	gnulib := -lgcc -lgcc_eh
into
	gnulib := -lgcc


$ BUILD_CC=gcc CFLAGS="-O" CC=$TARGET-gcc \
	AR=$TARGET-ar RANLIB=$TARGET-ranlib \
	../glibc-2.3.3/configure --prefix=/usr
				--host=$TARGET
				--build=i686-linux
				--enable-kernel=2.4.18
				--without-cvs
				--without-tls
				--enable-shared
				--without-__thread
				--without-gd
				--with-headers=$TARGET_PREFIX/include
				--enable-add-ons=linuxthreads

$ make LD=$TARGET-ld RANLIB=$TARGET-ranlib
$ make install install_root=$TARGET_PREFIX prefix=""


$ for file in libc.so libpthread.so libgcc_s.so; do
	for lib in lib usr/lib; do
	    if test -f $TARGET_PREFIX/$lib/$file &&
		test ! -h $TARGET_PREFIX/$lib/$file; then
			mv $TARGET_PREFIX/$lib/$file \
				$TARGET_PREFIX/$lib/${file}_orig
			sed 's@/usr/lib/@@g;s@/lib/@@g; \
			/BUG in libc.scripts.output-format.sed/d' \
			<$TARGET_PREFIX/$lib/${file}_orig> \
			$TARGET_PREFIX/$lib/$file
	    fi
	done
  done



6) gcc-3.4.1

$ ../gcc-3.4.1/configure --prefix=$PREFIX
			--target=$TARGET
			--with-headers=$TARGET_PREFIX/include
			--with-local-prefix=$TARGET_PREFIX/include
			--disable-nls
			--enable-threads=posix
			--enable-symvers=gnu
			--enable-__cxa_atexit
			--enable-languages=c,c++
			--enable-shared
			--enable-c99
			--enable-long-long

$ make all
$ make install




afterwards, I can compile a simple hello world file, but I have the
feeling that the libraries for c++ aren't compiled in.
(iostream.h isn't recognised)



What did I do wrong?

thanks for any response

Wim





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