Re: [Ltib] Problem including external libraries

[Stuart Hughes]

Hi Ricardo,

Take a look at the example helloworld package, which has c/cpp examples.

You can try this with:

./ltib -p helloworld -m prep           # unpack for inspection in rpm/BUILD/
./ltib -p helloworld                         # build it

Look in dist/lfs-5.1/helloworld/helloworld.spec for the build instructions.

The problem you have is that you don't need to use CROSS in ltib as 
within the build environment gcc etc is already spoofed to the cross 
compiler.

Regards, Stuart



On 15/12/11 12:00, Ricardo Ungerer wrote:
> Hello list,
>
> I'm trying to build a very very simple c program:
>
> ========= main.cpp
> #include<stdio.h>
> #include<boost/filesystem.hpp>
>
> int main( int argc, char* argv[] )
> {
>      printf("Hello world \n" );
>      return 0;
> }
> =========
>
>
> with this makefile:
>
> ========== Makefile
> CROSS=arm-none-linux-gnueabi-
>
> all: link_test
> link_test: main.cpp
>         $(CROSS)g++ -lboost_filesystem -o link_test main.cpp
> ===========
>
> the error reported i got is:
>
> $ make ARCH=arm CROSS_COMPILER=arm-none-linux-gnueabi- KERNELDIR=../linux
> main.cpp:6:32: error: boost/filesystem.hpp: No such file or directory
>
> My objetive is to successfully include and link the link_test with
> boost_filesystem. I included the boost package with "ltib
> --configure"->package list->boost.
>
> What i'm not catching here?
> And how would i do the same with cmake?