[Buildroot] How can I add extra CFLAGS and LDFLAGS parameters in Busybox ?

[Jack]

Hi,

I tried to add new feature on busybox, and I need to call another API
in busybox toolchain.

How can I add additional CFLAGS and LDFLAGS in busybox?

All I tried is, add "-I XXX" at CONFIG_EXTRA_CFLAGS and "-L XXX -lxxx"
at CONFIG_EXTRA_LDFLAGS in busybox config file without modifying
busybox's Makefile. It shows "XXX/XXX/ld: cannot find -lxxx" message.

I already check "-l" library file in "-L" option PATH.

[Arnout Vandecappelle]

Post by Jack
I tried to add new feature on busybox, and I need to call another API
in busybox toolchain.

This sounds like something very weird and unlikely. But OK.

Post by Jack
How can I add additional CFLAGS and LDFLAGS in busybox?
All I tried is, add "-I XXX" at CONFIG_EXTRA_CFLAGS and "-L XXX -lxxx"
at CONFIG_EXTRA_LDFLAGS in busybox config file without modifying
busybox's Makefile. It shows "XXX/XXX/ld: cannot find -lxxx" message.

Clearly that worked, or you wouldn't get the -lxxx message.

If you build with 'V=1' on the command line, you'll see the full argument list
of the LD command.

If you want actual help from us, provide all the details, i.e. your busybox
config and the build log (with V=1). Put it in a pastebin to avoid spamming the
list.

Regards,
Arnout

Post by Jack
I already check "-l" library file in "-L" option PATH.