Compiling Busybox for gcov coverage testing

[Ralf Friedl]

Jiaqi Tan wrote:
> Hi,
>
> I'm sorry if this has been asked before, but has anyone tried
> compiling Busybox on x86 for gcov coverage testing before? I tried
> using CFLAGS="-fprofile-arcs -ftest-coverage" but the compilation
> failed with the following errors:
>
>   HOSTLD  scripts/kconfig/conf
> scripts/kconfig/conf.o: In function `global constructors keyed to
> 65535_0_input_mode':
> HOME/busybox/scripts/kconfig/conf.c:612: undefined reference to `__gcov_init'
> scripts/kconfig/conf.o:(.data+0x84): undefined reference to `__gcov_merge_add'
> scripts/kconfig/zconf.tab.o: In function `global constructors keyed to
> 65535_0_kconf_id_lookup':
> HOME/busybox/out-grep-gcov/scripts/kconfig/zconf.tab.c:2172: undefined
> reference to `__gcov_init'
> scripts/kconfig/zconf.tab.o:(.data+0x624): undefined reference to
> `__gcov_merge_add'
> collect2: ld returned 1 exit status
> make[4]: *** [scripts/kconfig/conf] Error 1
> make[3]: *** [silentoldconfig] Error 2
> make[2]: *** [include/autoconf.h] Error 2
> make[1]: *** [_all] Error 2
> make: *** [all] Error 2
>
> Has anyone managed to successfully compile Busybox for gcov testing before?
>   
Can you compile a "Hello, World" program with these options? If not, you 
should fix that first.