Re: [PATCH] examples/l2fwd-cat: fix build

[David Marchand <david.marchand@redhat.com>]

On Wed, Oct 5, 2022 at 5:24 PM Kevin Traynor <ktraynor@redhat.com> wrote:
>
> <ctype.h> and <errno.h> need to be included for the build
> since they were removed from <rte_common.h>.
>
> ../examples/l2fwd-cat/cat.c: In function ‘parse_set’:
> ../examples/l2fwd-cat/cat.c:66:16:
> warning: implicit declaration of function ‘isblank’
> [-Wimplicit-function-declaration]
>    66 |         while (isblank(*str))
>       |                ^~~~~~~
> ../examples/l2fwd-cat/cat.c:18:1:
> note: include ‘<ctype.h>’ or provide a declaration of ‘isblank’
>    17 | #include "cat.h"
>   +++ |+#include <ctype.h>
>    18 |
> ../examples/l2fwd-cat/cat.c:70:15:
> warning: implicit declaration of function ‘isdigit’
> [-Wimplicit-function-declaration]
>    70 |         if ((!isdigit(*str) && *str != '(') || *str == '\0')
>       |               ^~~~~~~
> ../examples/l2fwd-cat/cat.c:70:15:
> note: include ‘<ctype.h>’ or provide a declaration of ‘isdigit’
> ../examples/l2fwd-cat/cat.c:75:17:
> error: ‘errno’ undeclared (first use in this function)
>    75 |                 errno = 0;
>       |                 ^~~~~
> ../examples/l2fwd-cat/cat.c:18:1:
> note: ‘errno’ is defined in header ‘<errno.h>’;
> did you forget to ‘#include <errno.h>’?
>    17 | #include "cat.h"
>   +++ |+#include <errno.h>
>
> Fixes: 72b452c5f259 ("eal: remove unneeded includes from a public header")
>
> Signed-off-by: Kevin Traynor <ktraynor@redhat.com>
> ---
>  examples/l2fwd-cat/cat.c | 2 ++
>  1 file changed, 2 insertions(+)

There is another issue, caught when building this example out of the
meson build process (can be caught with
DPDK_BUILD_TEST_EXAMPLES=l2fwd-cat devtools/test-meson-builds.sh).
Not urgent, can you look at it?
(I added a rte_common.h inclusion in cat.h as a workaround, there may
be a bettter fix to do).


We could also enhance build coverage in GHA, since the
intel-cmt-cat/intel-cmd-cat-devel packages are available for
Ubuntu/Fedora distribs.


-- 
David Marchand