Add the -D_GNU_SOURCE flag to KHDR_INCLUDES so that it is defined in a central location.
809216233555 ("selftests/harness: remove use of LINE_MAX") introduced asprintf into kselftest_harness.h, which is a GNU extension and needs _GNU_SOURCE to either be defined prior to including headers or with the -D_GNU_SOURCE flag passed to the compiler.
Fixes: 809216233555 ("selftests/harness: remove use of LINE_MAX") Reported-by: kernel test robot oliver.sang@intel.com Closes: https://lore.kernel.org/oe-lkp/202404301040.3bea5782-oliver.sang@intel.com Signed-off-by: Edward Liaw edliaw@google.com --- tools/testing/selftests/Makefile | 4 ++-- tools/testing/selftests/kselftest_harness.h | 2 +- tools/testing/selftests/lib.mk | 2 +- 3 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index e1504833654d..ed012a7f0786 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -161,11 +161,11 @@ ifneq ($(KBUILD_OUTPUT),) # $(realpath ...) resolves symlinks abs_objtree := $(realpath $(abs_objtree)) BUILD := $(abs_objtree)/kselftest - KHDR_INCLUDES := -isystem ${abs_objtree}/usr/include + KHDR_INCLUDES := -D_GNU_SOURCE -isystem ${abs_objtree}/usr/include else BUILD := $(CURDIR) abs_srctree := $(shell cd $(top_srcdir) && pwd) - KHDR_INCLUDES := -isystem ${abs_srctree}/usr/include + KHDR_INCLUDES := -D_GNU_SOURCE -isystem ${abs_srctree}/usr/include DEFAULT_INSTALL_HDR_PATH := 1 endif
diff --git a/tools/testing/selftests/kselftest_harness.h b/tools/testing/selftests/kselftest_harness.h index d98702b6955d..b2a1b6343896 100644 --- a/tools/testing/selftests/kselftest_harness.h +++ b/tools/testing/selftests/kselftest_harness.h @@ -51,7 +51,7 @@ #define __KSELFTEST_HARNESS_H
#ifndef _GNU_SOURCE -#define _GNU_SOURCE +static_assert(0, "kselftest harness requires _GNU_SOURCE to be defined"); #endif #include <asm/types.h> #include <ctype.h> diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk index da2cade3bab0..2503dc732b4d 100644 --- a/tools/testing/selftests/lib.mk +++ b/tools/testing/selftests/lib.mk @@ -45,7 +45,7 @@ selfdir = $(realpath $(dir $(filter %/lib.mk,$(MAKEFILE_LIST)))) top_srcdir = $(selfdir)/../../..
ifeq ($(KHDR_INCLUDES),) -KHDR_INCLUDES := -isystem $(top_srcdir)/usr/include +KHDR_INCLUDES := -D_GNU_SOURCE -isystem $(top_srcdir)/usr/include endif
# The following are built by lib.mk common compile rules.