Hi all,
We are using uClibc libc on our embedded target system running on Axis ETRAX
LX100 CPU - cris architecture.
For quite some time Axis provides only 0.9.27 version of uClibc. Following the
discussion on openwrt and uclibc buildroot mailing lists I managed to get
uClibc 0.9.29 working on cris.
The problem is the of the final binary. Here are results:
[EMAIL PROTECTED] /work/hello $ cat hello.c
#include <stdio.h>
int main (void)
{
printf("FU");
return 1;
}
0.9.27
------
$ gcc_cris -mlinux -muclibc=/fw/afc2_R1.gen/stage.uclibc hello.c -o
_hello_cris_old_uclibc_dyn
$ ls -l _hello_cris_old_uclibc_dyn
-rwxr-xr-x 1 hinkok hinkok 2196 Aug 20 14:52 _hello_cris_old_uclibc_dyn
[EMAIL PROTECTED] /work/hello $ /usr/local/cris/bin/cris-axis-linux-gnu-readelf
-l _hello_cris_old_uclibc_dyn
Elf file type is EXEC (Executable file)
Entry point 0x80234
There are 5 program headers, starting at offset 52
Program Headers:
Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align
PHDR 0x000034 0x00080034 0x00080034 0x000a0 0x000a0 R E 0x4
INTERP 0x0000d4 0x000800d4 0x000800d4 0x00014 0x00014 R 0x1
[Requesting program interpreter: /lib/ld-uClibc.so.0]
LOAD 0x000000 0x00080000 0x00080000 0x00288 0x00288 R E 0x2000
LOAD 0x0002a0 0x000822a0 0x000822a0 0x000a4 0x000c0 RW 0x2000
DYNAMIC 0x0002a8 0x000822a8 0x000822a8 0x00088 0x00088 RW 0x4
Section to Segment mapping:
Segment Sections...
00
01 .interp
02 .interp .hash .dynsym .dynstr .rela.plt .plt .text .rodata
03 .data .dynamic .got .bss
04 .dynamic
0.9.29
------
$ /work/stage/buildroot/build_cris/staging_dir/usr/bin/cris-linux-uclibc-gcc
hello.c -o _hello_cris_new_uclibc_dyn
$ ls -l _hello_cris_new_uclibc_dyn
-rwxr-xr-x 1 hinkok hinkok 6104 Aug 20 14:52 _hello_cris_new_uclibc_dyn
[EMAIL PROTECTED] /work/hello $
/work/stage/buildroot/build_cris/staging_dir/usr/bin/cris-linux-uclibc-readelf
-l _hello_cris_new_uclibc_dyn
Elf file type is EXEC (Executable file)
Entry point 0x80344
There are 5 program headers, starting at offset 52
Program Headers:
Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align
PHDR 0x000034 0x00080034 0x00080034 0x000a0 0x000a0 R E 0x4
INTERP 0x0000d4 0x000800d4 0x000800d4 0x00014 0x00014 R 0x1
[Requesting program interpreter: /lib/ld-uClibc.so.0]
LOAD 0x000000 0x00080000 0x00080000 0x0058c 0x0058c R E 0x2000
LOAD 0x00058c 0x0008258c 0x0008258c 0x000f0 0x00114 RW 0x2000
DYNAMIC 0x0005a0 0x000825a0 0x000825a0 0x000b8 0x000b8 RW 0x4
Section to Segment mapping:
Segment Sections...
00
01 .interp
02 .interp .hash .dynsym .dynstr .gnu.version .gnu.version_r .rela.plt
.init .plt .text .fini .rodata .eh_frame
03 .ctors .dtors .jcr .dynamic .got .data .bss
04 .dynamic
Why is size of the binary so much bigger with 0.9.29? Almost 3 times! And it
does not get better if the binary is stripped - still approximately 3 times
larger binary. The only difference I can see is LOAD section that is
significantly larger in newer uClibc. Does this apply to /lib/ld-uClibc.so.0?
I've appended both uClibc config files for comparison, but I think they are
pretty much the same.
Thank you,
Hinko
--
ČETRTA POT, d.o.o., Kranj
Planina 3
4000 Kranj
Slovenia, Europe
Tel. +386 (0) 4 280 66 03
E-mail: [EMAIL PROTECTED]
Http: www.cetrtapot.si
#
# Automatically generated make config: don't edit
#
# TARGET_alpha is not set
# TARGET_arm is not set
# TARGET_bfin is not set
TARGET_cris=y
# TARGET_e1 is not set
# TARGET_frv is not set
# TARGET_h8300 is not set
# TARGET_i386 is not set
# TARGET_i960 is not set
# TARGET_m68k is not set
# 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_sparc is not set
# TARGET_v850 is not set
#
# Target Architecture Features and Options
#
HAVE_ELF=y
ARCH_SUPPORTS_LITTLE_ENDIAN=y
TARGET_ARCH="cris"
CONFIG_CRIS=y
ARCH_LITTLE_ENDIAN=y
# ARCH_BIG_ENDIAN is not set
# ARCH_HAS_NO_MMU is not set
ARCH_HAS_MMU=y
UCLIBC_HAS_FLOATS=y
HAS_FPU=y
# DO_C99_MATH is not set
WARNINGS="-Wall"
KERNEL_SOURCE="/fw/afc2_R1.gen/pkg/linux-R1/build/uclibc/"
C_SYMBOL_PREFIX=""
HAVE_DOT_CONFIG=y
#
# General Library Settings
#
# HAVE_NO_PIC is not set
DOPIC=y
# HAVE_NO_SHARED is not set
HAVE_SHARED=y
# ARCH_HAS_NO_LDSO is not set
BUILD_UCLIBC_LDSO=y
FORCE_SHAREABLE_TEXT_SEGMENTS=y
LDSO_LDD_SUPPORT=y
# LDSO_CACHE_SUPPORT is not set
LDSO_PRELOAD_FILE_SUPPORT=y
LDSO_BASE_FILENAME="ld-uClibc.so"
# UCLIBC_CTOR_DTOR is not set
# HAS_NO_THREADS is not set
UCLIBC_HAS_THREADS=y
PTHREADS_DEBUG_SUPPORT=y
UCLIBC_HAS_LFS=y
# MALLOC is not set
# MALLOC_SIMPLE is not set
MALLOC_STANDARD=y
MALLOC_GLIBC_COMPAT=y
# UCLIBC_DYNAMIC_ATEXIT is not set
HAS_SHADOW=y
UNIX98PTY_ONLY=y
ASSUME_DEVPTS=y
UCLIBC_HAS_TM_EXTENSIONS=y
UCLIBC_HAS_TZ_CACHING=y
UCLIBC_HAS_TZ_FILE=y
UCLIBC_HAS_TZ_FILE_READ_MANY=y
UCLIBC_TZ_FILE_PATH="/etc/TZ"
#
# Networking Support
#
UCLIBC_HAS_IPV6=y
UCLIBC_HAS_RPC=y
# UCLIBC_HAS_FULL_RPC is not set
#
# String and Stdio Support
#
# UCLIBC_HAS_STRING_GENERIC_OPT is not set
# UCLIBC_HAS_STRING_ARCH_OPT is not set
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=y
# UCLIBC_HAS_LOCALE is not set
# UCLIBC_HAS_HEXADECIMAL_FLOATS is not set
# UCLIBC_HAS_GLIBC_CUSTOM_PRINTF 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_GETC_MACRO=y
UCLIBC_HAS_STDIO_PUTC_MACRO=y
UCLIBC_HAS_STDIO_AUTO_RW_TRANSITION=y
# UCLIBC_HAS_FOPEN_LARGEFILE_MODE is not set
# 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=y
UCLIBC_HAS_GNU_GETOPT=y
#
# Big and Tall
#
UCLIBC_HAS_REGEX=y
# UCLIBC_HAS_WORDEXP is not set
# UCLIBC_HAS_FTW is not set
UCLIBC_HAS_GLOB=y
#
# Library Installation Options
#
SHARED_LIB_LOADER_PREFIX="/lib"
RUNTIME_PREFIX="/"
DEVEL_PREFIX="$(RUNTIME_PREFIX)"
#
# uClibc security related options
#
# UCLIBC_SECURITY is not set
#
# uClibc development/debugging options
#
# DODEBUG is not set
# DOASSERTS is not set
# SUPPORT_LD_DEBUG is not set
# SUPPORT_LD_DEBUG_EARLY is not set
# UCLIBC_MJN3_ONLY is not set
#
# Automatically generated make config: don't edit
# Wed Aug 20 14:15:21 2008
#
# TARGET_alpha is not set
# TARGET_arm is not set
# TARGET_bfin is not set
TARGET_cris=y
# 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 is not set
# 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 Architecture Features and Options
#
TARGET_ARCH="cris"
FORCE_OPTIONS_FOR_ARCH=y
CONFIG_CRIS=y
# CONFIG_CRISV32 is not set
TARGET_SUBARCH=""
#
# Using ELF file format
#
ARCH_LITTLE_ENDIAN=y
#
# Using Little Endian
#
ARCH_HAS_MMU=y
ARCH_USE_MMU=y
UCLIBC_HAS_FLOATS=y
UCLIBC_HAS_FPU=y
DO_C99_MATH=y
KERNEL_HEADERS="/work/stage/buildroot/toolchain_build_cris/linux/include"
HAVE_DOT_CONFIG=y
#
# General Library Settings
#
# HAVE_NO_PIC is not set
DOPIC=y
# HAVE_NO_SHARED is not set
# ARCH_HAS_NO_LDSO is not set
HAVE_SHARED=y
FORCE_SHAREABLE_TEXT_SEGMENTS=y
LDSO_LDD_SUPPORT=y
# LDSO_CACHE_SUPPORT is not set
# LDSO_PRELOAD_FILE_SUPPORT is not set
# UCLIBC_STATIC_LDCONFIG is not set
# LDSO_RUNPATH is not set
# UCLIBC_CTOR_DTOR is not set
# HAS_NO_THREADS is not set
UCLIBC_HAS_THREADS=y
# PTHREADS_DEBUG_SUPPORT is not set
LINUXTHREADS_OLD=y
UCLIBC_HAS_LFS=y
# MALLOC is not set
# MALLOC_SIMPLE is not set
MALLOC_STANDARD=y
MALLOC_GLIBC_COMPAT=y
UCLIBC_DYNAMIC_ATEXIT=y
# COMPAT_ATEXIT is not set
# UCLIBC_SUSV3_LEGACY is not set
# UCLIBC_SUSV3_LEGACY_MACROS is not set
UCLIBC_HAS_SHADOW=y
# UCLIBC_HAS_PROGRAM_INVOCATION_NAME is not set
UCLIBC_HAS___PROGNAME=y
UNIX98PTY_ONLY=y
ASSUME_DEVPTS=y
UCLIBC_HAS_TM_EXTENSIONS=y
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
#
# Networking Support
#
# UCLIBC_HAS_IPV6 is not set
UCLIBC_HAS_RPC=y
# UCLIBC_HAS_FULL_RPC is not set
# 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 is not set
# UCLIBC_HAS_STRING_ARCH_OPT is not set
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=y
# UCLIBC_HAS_LOCALE is not set
# UCLIBC_HAS_HEXADECIMAL_FLOATS is not set
# UCLIBC_HAS_GLIBC_CUSTOM_PRINTF 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_LARGEFILE_MODE is not set
# 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 is not set
UCLIBC_HAS_SIGNUM_MESSAGES=y
# UCLIBC_HAS_SYS_SIGLIST is not set
UCLIBC_HAS_GNU_GETOPT=y
# UCLIBC_HAS_GNU_GETSUBOPT is not set
#
# Big and Tall
#
# UCLIBC_HAS_REGEX is not set
# UCLIBC_HAS_FNMATCH is not set
# UCLIBC_HAS_FTW is not set
#
# Library Installation Options
#
SHARED_LIB_LOADER_PREFIX="/lib"
RUNTIME_PREFIX="/"
DEVEL_PREFIX="/usr/"
#
# Security options
#
# UCLIBC_HAS_ARC4RANDOM is not set
# HAVE_NO_SSP is not set
# UCLIBC_HAS_SSP is not set
# UCLIBC_BUILD_RELRO is not set
# UCLIBC_BUILD_NOW is not set
# UCLIBC_BUILD_NOEXECSTACK is not set
#
# uClibc development/debugging options
#
CROSS_COMPILER_PREFIX="/work/stage/buildroot/build_cris/staging_dir/usr/bin/cris-linux-uclibc-"
UCLIBC_EXTRA_CFLAGS=""
# DODEBUG is not set
# DODEBUG_PT is not set
DOSTRIP=y
# DOASSERTS is not set
# SUPPORT_LD_DEBUG is not set
# SUPPORT_LD_DEBUG_EARLY is not set
# UCLIBC_MALLOC_DEBUGGING is not set
WARNINGS="-Wall"
# EXTRA_WARNINGS is not set
# DOMULTI is not set
# UCLIBC_MJN3_ONLY is not set
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