re: link with redhat 9 glibc on redhat 7.3

[Dan Kegel <dank at kegel dot com>]

Co Ngai Fung wrote:
> I am trying to link with the redhat 9 glibc on redhat 7.2, but it fail,
> I copy the glibc of redhat 9 to /build/compilers/sysroot/redhat-9/ and
> link with the LDFLAG="-B /build/compilers/sysroot/redhat-9/usr/lib       
> -Wl,-rpath-link,/build/compilers/sysroot/redhat-9/usr/lib", but it fail
> to link, the output is as below,
>
> /build/compilers/sysroot/redhat-9/usr/lib/crt1.o: In function `_start':
> ../sysdeps/i386/elf/start.S:71: undefined reference to `__libc_csu_fini'
> ../sysdeps/i386/elf/start.S:72: undefined reference to `__libc_csu_init'
> misc.o: In function `parse_line':
> misc.o(.text+0x4e8): undefined reference to `__ctype_b_loc'

Are you trying to use a Red Hat 7.3 system to build apps that run on Red Hat 9?
That's hard with the tools that come with the system.
You can do it fairly easily using crosstool, though; see http://kegel.com/crosstool.
The trick is to embrace cross-compiling, i.e. not using your normal
system compiler, linker, and libraries, and instead overriding CC etc.
when configuring your apps to point to the cross-compiler you built with crosstool.
- Dan

--
My technical stuff: http://kegel.com
My politics: see http://www.misleader.org for examples of why I'm for regime change

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