On a system without /usr/include/linux/ndctl.h (provided by the kernel "make INSTALL_HDR_PATH=/usr headers_install"). The ndctl build falls back to using the local copy of ndctl.h, triggering these warnings. CC lib/test-dpa-alloc.o In file included from lib/test-dpa-alloc.c:33:0: ./ndctl.h: In function ‘nfit_bus_cmd_name’: ./ndctl.h:122:2: warning: implicit declaration of function ‘ARRAY_SIZE’ [-Wimplicit-function-declaration] if (cmd < ARRAY_SIZE(names) && names[cmd]) Arrange for ARRAY_SIZE() to be picked up from <ccan/array_size/array_size.h> as a fallback. Reported-by: Robert Elliott <Elliott(a)hp.com&gt; Signed-off-by: Dan Williams <dan.j.williams(a)intel.com&gt; --- lib/test-dpa-alloc.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/lib/test-dpa-alloc.c b/lib/test-dpa-alloc.c index 5b7db7c2f542..f94838ac0b9b 100644 --- a/lib/test-dpa-alloc.c +++ b/lib/test-dpa-alloc.c @@ -27,13 +27,14 @@ #include <uuid/uuid.h> #include <ndctl/libndctl.h> +#include <test-dpa-alloc.h> +#include <ccan/array_size/array_size.h> + #ifdef HAVE_NDCTL_H #include <linux/ndctl.h> #else #include <ndctl.h> #endif -#include <test-dpa-alloc.h> -#include <ccan/array_size/array_size.h> static const char *NFIT_TEST_MODULE = "nfit_test"; static const char *NFIT_PROVIDER0 = "nfit_test.0";