I have a uclibc tool-chain.(0.9.30.3) and build it with buildroot . root [ perl-5.14.0 ]# make -f Makefile.micro CC=i686-linux-gcc i686-linux-ld -o microperl uav.o udeb.o udoio.o udoop.o udump.o uglobals.o ugv.o uhv.o umro.o umg.o uperlmain.o uop.o ureentr.o upad.o uperl.o uperlio.o uperly.o upp.o upp_ctl.o upp_hot.o upp_sys.o upp_pack.o upp_sort.o uregcomp.o uregexec.o urun.o uscope.o usv.o utaint.o utoke.o unumeric.o ulocale.o umathoms.o uuniversal.o uutf8.o uutil.o uperlapi.o ukeywords.o -lm i686-linux-ld: warning: cannot find entry symbol _start; defaulting to 08049720 upp.o: In function `Perl_pp_split': pp.c:(.text+0x14294): undefined reference to `__ctype_b' pp.c:(.text+0x1446b): undefined reference to `__ctype_b' pp.c:(.text+0x14696): undefined reference to `__ctype_b' uregexec.o: In function `S_find_byclass': regexec.c:(.text+0x2983): undefined reference to `__ctype_b' regexec.c:(.text+0x2a6a): undefined reference to `__ctype_b' uregexec.o:regexec.c:(.text+0x2bb5): more undefined references to `__ctype_b' follow make: *** [microperl] 错误 1 root [ perl-5.14.0 ]# i686-linux-gcc -v 使用内建 specs。 COLLECT_GCC=i686-linux-gcc COLLECT_LTO_WRAPPER=/mnt/lfs/tmp/buildroot-2011.05/output/host/usr/libexec/gcc/i686-unknown-linux-uclibc/4.6.0/lto-wrapper 目标：i686-unknown-linux-uclibc 配置为：/mnt/lfs/tmp/buildroot-2011.05/output/toolchain/gcc-4.6.0/configure --prefix=/mnt/lfs/tmp/buildroot-2011.05/output/host/usr --build=i686-pc-linux-gnu --host=i686-pc-linux-gnu --target=i686-unknown-linux-uclibc --enable-languages=c,c++ --with-sysroot=/mnt/lfs/tmp/buildroot-2011.05/output/host/usr/i686-unknown-linux-uclibc/sysroot --with-build-time-tools=/mnt/lfs/tmp/buildroot-2011.05/output/host/usr/i686-unknown-linux-uclibc/bin --disable-__cxa_atexit --enable-target-optspace --disable-libgomp --with-gnu-ld --disable-libssp --disable-multilib --disable-tls --enable-shared --with-gmp=/mnt/lfs/tmp/buildroot-2011.05/output/host/usr --with-mpfr=/mnt/lfs/tmp/buildroot-2011.05/output/host/usr --with-mpc=/mnt/lfs/tmp/buildroot-2011.05/output/host/usr --enable-threads --disable-decimal-float --with-arch=i686 --with-tune=i686 --with-pkgversion='Buildroot 2011.05' --with-bugurl=http://bugs.buildroot.net/ 线程模型：posix gcc 版本 4.6.0 (Buildroot 2011.05) root [ perl-5.14.0 ]# i686-linux-ld --version GNU ld (GNU Binutils) 2.20.1.20100303 Copyright 2009 Free Software Foundation, Inc. This program is free software; you may redistribute it under the terms of the GNU General Public License version 3 or (at your option) a later version. This program has absolutely no warranty. root [ perl-5.14.0 ]#
Buildroot issue.
I guess your uClibc lacks UCLIBC_HAS_CTYPE_TABLES, which is enabled in the default uClibc configuration that Buildroot uses to build a toolchain. Can you check your uClibc configuration ?
usually when this error comes up, it's because the cross-compile incorrectly used things like -I/usr/include. please post the *full* build log of all the objects as an attachment.
I checked uclibc.config contains UCLIBC_HAS_CTYPE_TABLES. I tried many times, compiling microperl success, here is my compilation steps: 1. Chmod + w Makefile.micro 2 In line 39, as described below, the last uudmap.h bitcount.h removed. 38 clean: 39-rm-f $ (O) microperl generate_uudmap $ (_X) 40 #-rm-f $ (O) microperl generate_uudmap $ (_X) uudmap.h bitcount.h 3. First in the x86 compiler normally generates two files uudmap.h bitcount.h root [perl-5.14.0] # make-f Makefile.micro 4 comments Dir 181,182 lines 181 # uudmap.h bitcount.h: generate_uudmap $ (_X) 182 # $ (RUN). / Generate_uudmap $ (_X) uudmap.h bitcount.h 5 Executive root [perl-5.14.0] # make-f Makefile.micro clean Then uudmap.h bitcount.h not delete the two files. uclibc compile perl will be used. 6 Finally compile uclibc microperl root [perl-5.14.0] # make-f Makefile.micro CC = i686-linux-gcc Thank you for your help.