Re: crosscompile to arm-atmel-uclinux problems

[Bruno Haible]

Glenn Hessler wrote:
> I am trying to bld gettext 0.12.1 to uClinux 2.4 on Arm7tdmi.
>
> I run configure as follows:
>
> $ ./configure --host=arm-atmel-uclinux
> --prefix=/home/ghessler/uClinux/uClinux-dist/lib
> --exec_prefix=/home/ghessler/uClinux/uClinux-dist/romfs/usr
> --with-included-gettext --disable-nls
>
> CFLAGS=-D__linux__ -D__uClinux__ -D__ELF__ -DNO_MM -DCONFIG_CPU_AT75C220=1
>       -march=armv4 -mtune=arm7tdmi -nostdinc -fno-builtin -v
>       -I/home/ghessler/uClinux/uClinux-dist/linux-2.4.x/include
>       -I/opt/uClinux/toolchain/arm/2.95.3/lib/gcc-lib/arm-elf/2.95.3/include
>       -I/home/ghessler/uClinux/uClinux-dist/uClibc/include
>
> When I run make, I get the following undefined errors (and others):
>       ....
>       ../lib/libgrt.a(error.o): In function 'error_tail':
>       error.o: undefined reference to 'putc_unlocked'
>       error.o: undefined reference to 'fflush_unlocked'

Settings that affect the preprocessor should be given in CPPFLAGS, not in
CFLAGS. Here this would be

CPPFLAGS="-D__linux__ -D__uClinux__ -D__ELF__ -DNO_MM -DCONFIG_CPU_AT75C220=1
        -nostdinc
        -I/home/ghessler/uClinux/uClinux-dist/linux-2.4.x/include
        -I/opt/uClinux/toolchain/arm/2.95.3/lib/gcc-lib/arm-elf/2.95.3/include
        -I/home/ghessler/uClinux/uClinux-dist/uClibc/include"

> How do I pass a library dir w/ "-L" to the arm-elf-gcc run from the gettext
> libtool.

Through the LDFLAGS variable set at configure time.

I hope, with this info, the *_unlocked linker errors go away.

Bruno