uClibc on Coldfire (m68k) compile problems

Lennart Sorensen lsorense at csclub.uwaterloo.ca
Wed Mar 17 14:31:24 UTC 2010


On Wed, Mar 17, 2010 at 09:24:17AM -0400, Jim Burnett wrote:
> Fresh binutils-2.19 build (Just re-ran make install to get /opt/embedded
> fresh)
> 
> export PATH=/opt/embedded:$PATH

I built binutils with --target=m68k-uclinux.  Make sure you match any
prefix option with how you intend to install gcc later.

> Then configured gcc just like I did with the older version that compiled
> just fine.
> 
> ./configure --target=m68k-uclinux --prefix=/opt/embedded
> --enable-languages=c

I use this to configure gcc:
--target=m68k-uclinux --with-headers=/usr/m68k-uclinux/include
--enable-multilib --disable-shared --enable-languages=c

I am using /usr/m68k-uclinux as my cross compiler area (It fits there
since I am actually generating debian packages for installation).
Hence no --prefix in my case.

Of course I did have to temporarily build a gcc without library or header
support and install it to build uclibc to get the headers before building
gcc fully.

> make

You MUST use a builddir when building gcc 4.x.  So for example:

mkdir m68k-uclinux
cd m68k-uclinux
../configure --target=m68k-uclinux --with-headers=/usr/m68k-uclinux/include --enable-multilib --disable-shared --enable-languages=c
make

Trying to build in the gcc source dir always fails.  That's just how
they designed the build scripts.

> Then this error.
> 
> Checking multilib configuration for libgcc...
> make[2]: Entering directory
> `/home/jim/Newdev/toolchains/gcc-4.3.3/m68k-uclinux/libgcc'
> Makefile:144: ../.././gcc/libgcc.mvars: No such file or directory
> make[2]: *** No rule to make target `../.././gcc/libgcc.mvars'.  Stop.
> make[2]: Leaving directory
> `/home/jim/Newdev/toolchains/gcc-4.3.3/m68k-uclinux/libgcc'
> make[1]: *** [all-target-libgcc] Error 2
> make[1]: Leaving directory `/home/jim/Newdev/toolchains/gcc-4.3.3'
> make: *** [all] Error 2
> 
> Using  binutils-2.19
> 
> My Comp Specs:
> [jim at myhost bin]$ gcc -v
> Using built-in specs.
> Target: i686-pc-linux-gnu
> Configured with: ../configure --prefix=/usr --enable-shared
> --enable-languages=c,c++,fortran,objc,obj-c++,ada --enable-threads=posix
> --mandir=/usr/share/man --infodir=/usr/share/info --enable-__cxa_atexit
> --disable-multilib --libdir=/usr/lib --libexecdir=/usr/lib
> --enable-clocale=gnu --disable-libstdcxx-pch --with-tune=generic
> Thread model: posix
> gcc version 4.4.3 (GCC)

That is your host gcc, not your coldfire gcc.

> [jim at myhost bin]$ uname -r
> 2.6.32-ARCH
> 
> Still working on it, just wanted to send an update to anyone that is
> following.

Here is my .config for uclibc:

#
# Automatically generated make config: don't edit
# Version: 0.9.30.1
# Mon Mar  1 18:24:57 2010
#
# TARGET_alpha is not set
# TARGET_arm is not set
# TARGET_avr32 is not set
# TARGET_bfin is not set
# TARGET_cris is not set
# TARGET_e1 is not set
# TARGET_frv is not set
# TARGET_h8300 is not set
# TARGET_hppa is not set
# TARGET_i386 is not set
# TARGET_i960 is not set
# TARGET_ia64 is not set
TARGET_m68k=y
# TARGET_microblaze is not set
# TARGET_mips is not set
# TARGET_nios is not set
# TARGET_nios2 is not set
# TARGET_powerpc is not set
# TARGET_sh is not set
# TARGET_sh64 is not set
# TARGET_sparc is not set
# TARGET_v850 is not set
# TARGET_vax is not set
# TARGET_x86_64 is not set
# TARGET_xtensa is not set

#
# Target Architecture Features and Options
#
TARGET_ARCH="m68k"
FORCE_OPTIONS_FOR_ARCH=y
TARGET_SUBARCH=""
# UCLIBC_FORMAT_ELF is not set
# UCLIBC_FORMAT_FDPIC_ELF is not set
# UCLIBC_FORMAT_FLAT is not set
UCLIBC_FORMAT_FLAT_SEP_DATA=y
# UCLIBC_FORMAT_SHARED_FLAT is not set
ARCH_BIG_ENDIAN=y

#
# Using Big Endian
#
# ARCH_HAS_MMU is not set
UCLIBC_HAS_FLOATS=y
# UCLIBC_HAS_FPU is not set
UCLIBC_HAS_SOFT_FLOAT=y
DO_C99_MATH=y
# UCLIBC_HAS_FENV is not set
UCLIBC_HAS_LONG_DOUBLE_MATH=y
KERNEL_HEADERS="/usr/m68k-uclinux/include"
UCLIBC_UCLINUX_BROKEN_MUNMAP=y
EXCLUDE_BRK=y
HAVE_DOT_CONFIG=y

#
# General Library Settings
#
# HAVE_NO_PIC is not set
DOPIC=y
ARCH_HAS_NO_SHARED=y
ARCH_HAS_NO_LDSO=y
UCLIBC_CTOR_DTOR=y
# HAS_NO_THREADS is not set
UCLIBC_HAS_THREADS=y
# PTHREADS_DEBUG_SUPPORT is not set
LINUXTHREADS_OLD=y
UCLIBC_HAS_SYSLOG=y
# UCLIBC_HAS_LFS is not set
# MALLOC is not set
MALLOC_SIMPLE=y
# MALLOC_STANDARD is not set
# MALLOC_GLIBC_COMPAT is not set
# UCLIBC_DYNAMIC_ATEXIT is not set
# COMPAT_ATEXIT is not set
UCLIBC_SUSV3_LEGACY=y
# UCLIBC_SUSV3_LEGACY_MACROS is not set
# UCLIBC_HAS_STUBS is not set
# UCLIBC_HAS_SHADOW is not set
# UCLIBC_HAS_PROGRAM_INVOCATION_NAME is not set
UCLIBC_HAS_PTY=y
ASSUME_DEVPTS=y
# UNIX98PTY_ONLY is not set
UCLIBC_HAS_GETPT=y
# UCLIBC_HAS_TM_EXTENSIONS is not set
UCLIBC_HAS_TZ_CACHING=y
UCLIBC_HAS_TZ_FILE=y
UCLIBC_HAS_TZ_FILE_READ_MANY=y
UCLIBC_TZ_FILE_PATH="/etc/TZ"

#
# Advanced Library Settings
#
UCLIBC_PWD_BUFFER_SIZE=256
UCLIBC_GRP_BUFFER_SIZE=256

#
# Support various families of functions
#
# UCLIBC_LINUX_MODULE_24 is not set
UCLIBC_LINUX_SPECIFIC=y
UCLIBC_HAS_GNU_ERROR=y
UCLIBC_BSD_SPECIFIC=y
UCLIBC_HAS_BSD_ERR=y
# UCLIBC_HAS_OBSOLETE_BSD_SIGNAL is not set
# UCLIBC_HAS_OBSOLETE_SYSV_SIGNAL is not set
# UCLIBC_NTP_LEGACY is not set
# UCLIBC_SV4_DEPRECATED is not set
UCLIBC_HAS_REALTIME=y
UCLIBC_HAS_ADVANCED_REALTIME=y
UCLIBC_HAS_EPOLL=y
UCLIBC_HAS_XATTR=y
UCLIBC_HAS_PROFILING=y
UCLIBC_HAS_CRYPT_IMPL=y
UCLIBC_HAS_CRYPT=y
UCLIBC_HAS_NETWORK_SUPPORT=y
UCLIBC_HAS_SOCKET=y
UCLIBC_HAS_IPV4=y
# UCLIBC_HAS_IPV6 is not set
UCLIBC_HAS_RPC=y
UCLIBC_HAS_FULL_RPC=y
# UCLIBC_HAS_REENTRANT_RPC is not set
# UCLIBC_USE_NETLINK is not set
# UCLIBC_HAS_BSD_RES_CLOSE is not set

#
# String and Stdio Support
#
UCLIBC_HAS_STRING_GENERIC_OPT=y
UCLIBC_HAS_STRING_ARCH_OPT=y
UCLIBC_HAS_CTYPE_TABLES=y
UCLIBC_HAS_CTYPE_SIGNED=y
UCLIBC_HAS_CTYPE_UNSAFE=y
# UCLIBC_HAS_CTYPE_CHECKED is not set
# UCLIBC_HAS_CTYPE_ENFORCED is not set
# UCLIBC_HAS_WCHAR is not set
# UCLIBC_HAS_LOCALE is not set
# UCLIBC_HAS_HEXADECIMAL_FLOATS is not set
# UCLIBC_HAS_GLIBC_CUSTOM_PRINTF is not set
# USE_OLD_VFPRINTF is not set
UCLIBC_PRINTF_SCANF_POSITIONAL_ARGS=9
# UCLIBC_HAS_SCANF_GLIBC_A_FLAG is not set
# UCLIBC_HAS_STDIO_BUFSIZ_NONE is not set
UCLIBC_HAS_STDIO_BUFSIZ_256=y
# UCLIBC_HAS_STDIO_BUFSIZ_512 is not set
# UCLIBC_HAS_STDIO_BUFSIZ_1024 is not set
# UCLIBC_HAS_STDIO_BUFSIZ_2048 is not set
# UCLIBC_HAS_STDIO_BUFSIZ_4096 is not set
# UCLIBC_HAS_STDIO_BUFSIZ_8192 is not set
UCLIBC_HAS_STDIO_BUILTIN_BUFFER_NONE=y
# UCLIBC_HAS_STDIO_BUILTIN_BUFFER_4 is not set
# UCLIBC_HAS_STDIO_BUILTIN_BUFFER_8 is not set
# UCLIBC_HAS_STDIO_SHUTDOWN_ON_ABORT is not set
UCLIBC_HAS_STDIO_GETC_MACRO=y
UCLIBC_HAS_STDIO_PUTC_MACRO=y
UCLIBC_HAS_STDIO_AUTO_RW_TRANSITION=y
# UCLIBC_HAS_FOPEN_EXCLUSIVE_MODE is not set
# UCLIBC_HAS_GLIBC_CUSTOM_STREAMS is not set
UCLIBC_HAS_PRINTF_M_SPEC=y
UCLIBC_HAS_ERRNO_MESSAGES=y
UCLIBC_HAS_SYS_ERRLIST=y
UCLIBC_HAS_SIGNUM_MESSAGES=y
# UCLIBC_HAS_SYS_SIGLIST is not set
UCLIBC_HAS_GNU_GETOPT=y
UCLIBC_HAS_GNU_GETSUBOPT=y

#
# Big and Tall
#
UCLIBC_HAS_REGEX=y
UCLIBC_HAS_REGEX_OLD=y
UCLIBC_HAS_FNMATCH=y
UCLIBC_HAS_FNMATCH_OLD=y
# UCLIBC_HAS_WORDEXP is not set
# UCLIBC_HAS_FTW is not set
UCLIBC_HAS_GLOB=y
# UCLIBC_HAS_GNU_GLOB is not set

#
# Library Installation Options
#
RUNTIME_PREFIX="/usr/$(TARGET_ARCH)-linux-uclibc/"
DEVEL_PREFIX="/usr/$(TARGET_ARCH)-linux-uclibc"

#
# Security options
#
# UCLIBC_HAS_ARC4RANDOM is not set
# HAVE_NO_SSP is not set
# UCLIBC_HAS_SSP is not set
UCLIBC_BUILD_NOEXECSTACK=y

#
# uClibc development/debugging options
#
CROSS_COMPILER_PREFIX=""
UCLIBC_EXTRA_CFLAGS=""
# DODEBUG is not set
# DODEBUG_PT is not set
DOSTRIP=y
DOASSERTS=y
WARNINGS="-Wall"
# EXTRA_WARNINGS is not set
# DOMULTI is not set
# UCLIBC_MJN3_ONLY is not set

I build uclibc using:

make CROSS=m68k-uclinux- TARGET_ARCH=m68k ARCH_CFLAGS="-mcpu=5271 -msep-data"

I happen to be using a 5271 coldfire.

-- 
Len Sorensen


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