| Message ID | 20240625223454.1586259-2-edliaw@google.com |
|---|---|
| State | Accepted |
| Commit | cc937dad85aea4ab9e4f9827d7ea55932c86906b |
| Headers | show |
| Series | [v7,1/1] selftests: Centralize -D_GNU_SOURCE= to CFLAGS in lib.mk | expand |
On 6/25/24 16:34, Edward Liaw wrote: > Centralize the _GNU_SOURCE definition to CFLAGS in lib.mk. Remove > redundant defines from Makefiles that import lib.mk. Convert any usage > of "#define _GNU_SOURCE 1" to "#define _GNU_SOURCE". > > This uses the form "-D_GNU_SOURCE=", which is equivalent to > "#define _GNU_SOURCE". > > Otherwise using "-D_GNU_SOURCE" is equivalent to "-D_GNU_SOURCE=1" and > "#define _GNU_SOURCE 1", which is less commonly seen in source code and > would require many changes in selftests to avoid redefinition warnings. > > Suggested-by: John Hubbard <jhubbard@nvidia.com> > Signed-off-by: Edward Liaw <edliaw@google.com> > --- > tools/testing/selftests/exec/Makefile | 1 - > tools/testing/selftests/futex/functional/Makefile | 2 +- > tools/testing/selftests/intel_pstate/Makefile | 2 +- > tools/testing/selftests/iommu/Makefile | 2 -- > tools/testing/selftests/kvm/Makefile | 2 +- > tools/testing/selftests/lib.mk | 3 +++ > tools/testing/selftests/mm/thuge-gen.c | 2 +- > tools/testing/selftests/net/Makefile | 2 +- > tools/testing/selftests/net/tcp_ao/Makefile | 2 +- > tools/testing/selftests/proc/Makefile | 1 - > tools/testing/selftests/resctrl/Makefile | 2 +- > tools/testing/selftests/ring-buffer/Makefile | 1 - > tools/testing/selftests/riscv/mm/Makefile | 2 +- > tools/testing/selftests/sgx/Makefile | 2 +- > tools/testing/selftests/tmpfs/Makefile | 1 - > 15 files changed, 12 insertions(+), 15 deletions(-) > Andrew, I am seeing merge conflicts with mm and exec tests. Might be better to have you take this through your tree? Acked-by: Shuah Khan <skhan@linuxfoundation.org> thanks, -- Shuah
On 6/26/24 3:34 AM, Edward Liaw wrote: > Centralize the _GNU_SOURCE definition to CFLAGS in lib.mk. Remove > redundant defines from Makefiles that import lib.mk. Convert any usage > of "#define _GNU_SOURCE 1" to "#define _GNU_SOURCE". > > This uses the form "-D_GNU_SOURCE=", which is equivalent to > "#define _GNU_SOURCE". > > Otherwise using "-D_GNU_SOURCE" is equivalent to "-D_GNU_SOURCE=1" and > "#define _GNU_SOURCE 1", which is less commonly seen in source code and > would require many changes in selftests to avoid redefinition warnings. > > Suggested-by: John Hubbard <jhubbard@nvidia.com> > Signed-off-by: Edward Liaw <edliaw@google.com> Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com> > --- > tools/testing/selftests/exec/Makefile | 1 - > tools/testing/selftests/futex/functional/Makefile | 2 +- > tools/testing/selftests/intel_pstate/Makefile | 2 +- > tools/testing/selftests/iommu/Makefile | 2 -- > tools/testing/selftests/kvm/Makefile | 2 +- > tools/testing/selftests/lib.mk | 3 +++ > tools/testing/selftests/mm/thuge-gen.c | 2 +- > tools/testing/selftests/net/Makefile | 2 +- > tools/testing/selftests/net/tcp_ao/Makefile | 2 +- > tools/testing/selftests/proc/Makefile | 1 - > tools/testing/selftests/resctrl/Makefile | 2 +- > tools/testing/selftests/ring-buffer/Makefile | 1 - > tools/testing/selftests/riscv/mm/Makefile | 2 +- > tools/testing/selftests/sgx/Makefile | 2 +- > tools/testing/selftests/tmpfs/Makefile | 1 - > 15 files changed, 12 insertions(+), 15 deletions(-) > > diff --git a/tools/testing/selftests/exec/Makefile b/tools/testing/selftests/exec/Makefile > index ab67d58cfab7..ba012bc5aab9 100644 > --- a/tools/testing/selftests/exec/Makefile > +++ b/tools/testing/selftests/exec/Makefile > @@ -1,7 +1,6 @@ > # SPDX-License-Identifier: GPL-2.0 > CFLAGS = -Wall > CFLAGS += -Wno-nonnull > -CFLAGS += -D_GNU_SOURCE > > ALIGNS := 0x1000 0x200000 0x1000000 > ALIGN_PIES := $(patsubst %,load_address.%,$(ALIGNS)) > diff --git a/tools/testing/selftests/futex/functional/Makefile b/tools/testing/selftests/futex/functional/Makefile > index 994fa3468f17..f79f9bac7918 100644 > --- a/tools/testing/selftests/futex/functional/Makefile > +++ b/tools/testing/selftests/futex/functional/Makefile > @@ -1,6 +1,6 @@ > # SPDX-License-Identifier: GPL-2.0 > INCLUDES := -I../include -I../../ $(KHDR_INCLUDES) > -CFLAGS := $(CFLAGS) -g -O2 -Wall -D_GNU_SOURCE= -pthread $(INCLUDES) $(KHDR_INCLUDES) > +CFLAGS := $(CFLAGS) -g -O2 -Wall -pthread $(INCLUDES) $(KHDR_INCLUDES) > LDLIBS := -lpthread -lrt > > LOCAL_HDRS := \ > diff --git a/tools/testing/selftests/intel_pstate/Makefile b/tools/testing/selftests/intel_pstate/Makefile > index 05d66ef50c97..f45372cb00fe 100644 > --- a/tools/testing/selftests/intel_pstate/Makefile > +++ b/tools/testing/selftests/intel_pstate/Makefile > @@ -1,5 +1,5 @@ > # SPDX-License-Identifier: GPL-2.0 > -CFLAGS := $(CFLAGS) -Wall -D_GNU_SOURCE > +CFLAGS := $(CFLAGS) -Wall > LDLIBS += -lm > > ARCH ?= $(shell uname -m 2>/dev/null || echo not) > diff --git a/tools/testing/selftests/iommu/Makefile b/tools/testing/selftests/iommu/Makefile > index 32c5fdfd0eef..fd6477911f24 100644 > --- a/tools/testing/selftests/iommu/Makefile > +++ b/tools/testing/selftests/iommu/Makefile > @@ -2,8 +2,6 @@ > CFLAGS += -Wall -O2 -Wno-unused-function > CFLAGS += $(KHDR_INCLUDES) > > -CFLAGS += -D_GNU_SOURCE > - > TEST_GEN_PROGS := > TEST_GEN_PROGS += iommufd > TEST_GEN_PROGS += iommufd_fail_nth > diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile > index ac280dcba996..4ee37abf70ff 100644 > --- a/tools/testing/selftests/kvm/Makefile > +++ b/tools/testing/selftests/kvm/Makefile > @@ -231,7 +231,7 @@ LINUX_TOOL_ARCH_INCLUDE = $(top_srcdir)/tools/arch/$(ARCH)/include > endif > CFLAGS += -Wall -Wstrict-prototypes -Wuninitialized -O2 -g -std=gnu99 \ > -Wno-gnu-variable-sized-type-not-at-end -MD -MP -DCONFIG_64BIT \ > - -D_GNU_SOURCE -fno-builtin-memcmp -fno-builtin-memcpy \ > + -fno-builtin-memcmp -fno-builtin-memcpy \ > -fno-builtin-memset -fno-builtin-strnlen \ > -fno-stack-protector -fno-PIE -I$(LINUX_TOOL_INCLUDE) \ > -I$(LINUX_TOOL_ARCH_INCLUDE) -I$(LINUX_HDR_PATH) -Iinclude \ > diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk > index 7b299ed5ff45..d6edcfcb5be8 100644 > --- a/tools/testing/selftests/lib.mk > +++ b/tools/testing/selftests/lib.mk > @@ -196,6 +196,9 @@ endef > clean: $(if $(TEST_GEN_MODS_DIR),clean_mods_dir) > $(CLEAN) > > +# Build with _GNU_SOURCE by default > +CFLAGS += -D_GNU_SOURCE= > + > # Enables to extend CFLAGS and LDFLAGS from command line, e.g. > # make USERCFLAGS=-Werror USERLDFLAGS=-static > CFLAGS += $(USERCFLAGS) > diff --git a/tools/testing/selftests/mm/thuge-gen.c b/tools/testing/selftests/mm/thuge-gen.c > index d50dc71cac32..e4370b79b62f 100644 > --- a/tools/testing/selftests/mm/thuge-gen.c > +++ b/tools/testing/selftests/mm/thuge-gen.c > @@ -13,7 +13,7 @@ > sudo ipcs | awk '$1 == "0x00000000" {print $2}' | xargs -n1 sudo ipcrm -m > (warning this will remove all if someone else uses them) */ > > -#define _GNU_SOURCE 1 > +#define _GNU_SOURCE > #include <sys/mman.h> > #include <linux/mman.h> > #include <stdlib.h> > diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile > index bc3925200637..8eaffd7a641c 100644 > --- a/tools/testing/selftests/net/Makefile > +++ b/tools/testing/selftests/net/Makefile > @@ -1,7 +1,7 @@ > # SPDX-License-Identifier: GPL-2.0 > # Makefile for net selftests > > -CFLAGS = -Wall -Wl,--no-as-needed -O2 -g > +CFLAGS += -Wall -Wl,--no-as-needed -O2 -g > CFLAGS += -I../../../../usr/include/ $(KHDR_INCLUDES) > # Additional include paths needed by kselftest.h > CFLAGS += -I../ > diff --git a/tools/testing/selftests/net/tcp_ao/Makefile b/tools/testing/selftests/net/tcp_ao/Makefile > index 522d991e310e..bd88b90b902b 100644 > --- a/tools/testing/selftests/net/tcp_ao/Makefile > +++ b/tools/testing/selftests/net/tcp_ao/Makefile > @@ -26,7 +26,7 @@ LIB := $(LIBDIR)/libaotst.a > LDLIBS += $(LIB) -pthread > LIBDEPS := lib/aolib.h Makefile > > -CFLAGS := -Wall -O2 -g -D_GNU_SOURCE -fno-strict-aliasing > +CFLAGS += -Wall -O2 -g -fno-strict-aliasing > CFLAGS += $(KHDR_INCLUDES) > CFLAGS += -iquote ./lib/ -I ../../../../include/ > > diff --git a/tools/testing/selftests/proc/Makefile b/tools/testing/selftests/proc/Makefile > index 6066f607f758..ee424a9f075f 100644 > --- a/tools/testing/selftests/proc/Makefile > +++ b/tools/testing/selftests/proc/Makefile > @@ -1,6 +1,5 @@ > # SPDX-License-Identifier: GPL-2.0-only > CFLAGS += -Wall -O2 -Wno-unused-function > -CFLAGS += -D_GNU_SOURCE > LDFLAGS += -pthread > > TEST_GEN_PROGS := > diff --git a/tools/testing/selftests/resctrl/Makefile b/tools/testing/selftests/resctrl/Makefile > index 021863f86053..f408bd6bfc3d 100644 > --- a/tools/testing/selftests/resctrl/Makefile > +++ b/tools/testing/selftests/resctrl/Makefile > @@ -1,6 +1,6 @@ > # SPDX-License-Identifier: GPL-2.0 > > -CFLAGS = -g -Wall -O2 -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE > +CFLAGS = -g -Wall -O2 -D_FORTIFY_SOURCE=2 > CFLAGS += $(KHDR_INCLUDES) > > TEST_GEN_PROGS := resctrl_tests > diff --git a/tools/testing/selftests/ring-buffer/Makefile b/tools/testing/selftests/ring-buffer/Makefile > index 627c5fa6d1ab..23605782639e 100644 > --- a/tools/testing/selftests/ring-buffer/Makefile > +++ b/tools/testing/selftests/ring-buffer/Makefile > @@ -1,7 +1,6 @@ > # SPDX-License-Identifier: GPL-2.0 > CFLAGS += -Wl,-no-as-needed -Wall > CFLAGS += $(KHDR_INCLUDES) > -CFLAGS += -D_GNU_SOURCE > > TEST_GEN_PROGS = map_test > > diff --git a/tools/testing/selftests/riscv/mm/Makefile b/tools/testing/selftests/riscv/mm/Makefile > index c333263f2b27..4664ed79e20b 100644 > --- a/tools/testing/selftests/riscv/mm/Makefile > +++ b/tools/testing/selftests/riscv/mm/Makefile > @@ -3,7 +3,7 @@ > # Originally tools/testing/arm64/abi/Makefile > > # Additional include paths needed by kselftest.h and local headers > -CFLAGS += -D_GNU_SOURCE -std=gnu99 -I. > +CFLAGS += -std=gnu99 -I. > > TEST_GEN_FILES := mmap_default mmap_bottomup > > diff --git a/tools/testing/selftests/sgx/Makefile b/tools/testing/selftests/sgx/Makefile > index 867f88ce2570..03b5e13b872b 100644 > --- a/tools/testing/selftests/sgx/Makefile > +++ b/tools/testing/selftests/sgx/Makefile > @@ -12,7 +12,7 @@ OBJCOPY := $(CROSS_COMPILE)objcopy > endif > > INCLUDES := -I$(top_srcdir)/tools/include > -HOST_CFLAGS := -Wall -Werror -g $(INCLUDES) -fPIC > +HOST_CFLAGS := -Wall -Werror -g $(INCLUDES) -fPIC $(CFLAGS) > HOST_LDFLAGS := -z noexecstack -lcrypto > ENCL_CFLAGS += -Wall -Werror -static-pie -nostdlib -ffreestanding -fPIE \ > -fno-stack-protector -mrdrnd $(INCLUDES) > diff --git a/tools/testing/selftests/tmpfs/Makefile b/tools/testing/selftests/tmpfs/Makefile > index aa11ccc92e5b..3be931e1193f 100644 > --- a/tools/testing/selftests/tmpfs/Makefile > +++ b/tools/testing/selftests/tmpfs/Makefile > @@ -1,6 +1,5 @@ > # SPDX-License-Identifier: GPL-2.0-only > CFLAGS += -Wall -O2 > -CFLAGS += -D_GNU_SOURCE > > TEST_GEN_PROGS := > TEST_GEN_PROGS += bug-link-o-tmpfile
diff --git a/tools/testing/selftests/exec/Makefile b/tools/testing/selftests/exec/Makefile index ab67d58cfab7..ba012bc5aab9 100644 --- a/tools/testing/selftests/exec/Makefile +++ b/tools/testing/selftests/exec/Makefile @@ -1,7 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 CFLAGS = -Wall CFLAGS += -Wno-nonnull -CFLAGS += -D_GNU_SOURCE ALIGNS := 0x1000 0x200000 0x1000000 ALIGN_PIES := $(patsubst %,load_address.%,$(ALIGNS)) diff --git a/tools/testing/selftests/futex/functional/Makefile b/tools/testing/selftests/futex/functional/Makefile index 994fa3468f17..f79f9bac7918 100644 --- a/tools/testing/selftests/futex/functional/Makefile +++ b/tools/testing/selftests/futex/functional/Makefile @@ -1,6 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 INCLUDES := -I../include -I../../ $(KHDR_INCLUDES) -CFLAGS := $(CFLAGS) -g -O2 -Wall -D_GNU_SOURCE= -pthread $(INCLUDES) $(KHDR_INCLUDES) +CFLAGS := $(CFLAGS) -g -O2 -Wall -pthread $(INCLUDES) $(KHDR_INCLUDES) LDLIBS := -lpthread -lrt LOCAL_HDRS := \ diff --git a/tools/testing/selftests/intel_pstate/Makefile b/tools/testing/selftests/intel_pstate/Makefile index 05d66ef50c97..f45372cb00fe 100644 --- a/tools/testing/selftests/intel_pstate/Makefile +++ b/tools/testing/selftests/intel_pstate/Makefile @@ -1,5 +1,5 @@ # SPDX-License-Identifier: GPL-2.0 -CFLAGS := $(CFLAGS) -Wall -D_GNU_SOURCE +CFLAGS := $(CFLAGS) -Wall LDLIBS += -lm ARCH ?= $(shell uname -m 2>/dev/null || echo not) diff --git a/tools/testing/selftests/iommu/Makefile b/tools/testing/selftests/iommu/Makefile index 32c5fdfd0eef..fd6477911f24 100644 --- a/tools/testing/selftests/iommu/Makefile +++ b/tools/testing/selftests/iommu/Makefile @@ -2,8 +2,6 @@ CFLAGS += -Wall -O2 -Wno-unused-function CFLAGS += $(KHDR_INCLUDES) -CFLAGS += -D_GNU_SOURCE - TEST_GEN_PROGS := TEST_GEN_PROGS += iommufd TEST_GEN_PROGS += iommufd_fail_nth diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile index ac280dcba996..4ee37abf70ff 100644 --- a/tools/testing/selftests/kvm/Makefile +++ b/tools/testing/selftests/kvm/Makefile @@ -231,7 +231,7 @@ LINUX_TOOL_ARCH_INCLUDE = $(top_srcdir)/tools/arch/$(ARCH)/include endif CFLAGS += -Wall -Wstrict-prototypes -Wuninitialized -O2 -g -std=gnu99 \ -Wno-gnu-variable-sized-type-not-at-end -MD -MP -DCONFIG_64BIT \ - -D_GNU_SOURCE -fno-builtin-memcmp -fno-builtin-memcpy \ + -fno-builtin-memcmp -fno-builtin-memcpy \ -fno-builtin-memset -fno-builtin-strnlen \ -fno-stack-protector -fno-PIE -I$(LINUX_TOOL_INCLUDE) \ -I$(LINUX_TOOL_ARCH_INCLUDE) -I$(LINUX_HDR_PATH) -Iinclude \ diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk index 7b299ed5ff45..d6edcfcb5be8 100644 --- a/tools/testing/selftests/lib.mk +++ b/tools/testing/selftests/lib.mk @@ -196,6 +196,9 @@ endef clean: $(if $(TEST_GEN_MODS_DIR),clean_mods_dir) $(CLEAN) +# Build with _GNU_SOURCE by default +CFLAGS += -D_GNU_SOURCE= + # Enables to extend CFLAGS and LDFLAGS from command line, e.g. # make USERCFLAGS=-Werror USERLDFLAGS=-static CFLAGS += $(USERCFLAGS) diff --git a/tools/testing/selftests/mm/thuge-gen.c b/tools/testing/selftests/mm/thuge-gen.c index d50dc71cac32..e4370b79b62f 100644 --- a/tools/testing/selftests/mm/thuge-gen.c +++ b/tools/testing/selftests/mm/thuge-gen.c @@ -13,7 +13,7 @@ sudo ipcs | awk '$1 == "0x00000000" {print $2}' | xargs -n1 sudo ipcrm -m (warning this will remove all if someone else uses them) */ -#define _GNU_SOURCE 1 +#define _GNU_SOURCE #include <sys/mman.h> #include <linux/mman.h> #include <stdlib.h> diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile index bc3925200637..8eaffd7a641c 100644 --- a/tools/testing/selftests/net/Makefile +++ b/tools/testing/selftests/net/Makefile @@ -1,7 +1,7 @@ # SPDX-License-Identifier: GPL-2.0 # Makefile for net selftests -CFLAGS = -Wall -Wl,--no-as-needed -O2 -g +CFLAGS += -Wall -Wl,--no-as-needed -O2 -g CFLAGS += -I../../../../usr/include/ $(KHDR_INCLUDES) # Additional include paths needed by kselftest.h CFLAGS += -I../ diff --git a/tools/testing/selftests/net/tcp_ao/Makefile b/tools/testing/selftests/net/tcp_ao/Makefile index 522d991e310e..bd88b90b902b 100644 --- a/tools/testing/selftests/net/tcp_ao/Makefile +++ b/tools/testing/selftests/net/tcp_ao/Makefile @@ -26,7 +26,7 @@ LIB := $(LIBDIR)/libaotst.a LDLIBS += $(LIB) -pthread LIBDEPS := lib/aolib.h Makefile -CFLAGS := -Wall -O2 -g -D_GNU_SOURCE -fno-strict-aliasing +CFLAGS += -Wall -O2 -g -fno-strict-aliasing CFLAGS += $(KHDR_INCLUDES) CFLAGS += -iquote ./lib/ -I ../../../../include/ diff --git a/tools/testing/selftests/proc/Makefile b/tools/testing/selftests/proc/Makefile index 6066f607f758..ee424a9f075f 100644 --- a/tools/testing/selftests/proc/Makefile +++ b/tools/testing/selftests/proc/Makefile @@ -1,6 +1,5 @@ # SPDX-License-Identifier: GPL-2.0-only CFLAGS += -Wall -O2 -Wno-unused-function -CFLAGS += -D_GNU_SOURCE LDFLAGS += -pthread TEST_GEN_PROGS := diff --git a/tools/testing/selftests/resctrl/Makefile b/tools/testing/selftests/resctrl/Makefile index 021863f86053..f408bd6bfc3d 100644 --- a/tools/testing/selftests/resctrl/Makefile +++ b/tools/testing/selftests/resctrl/Makefile @@ -1,6 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 -CFLAGS = -g -Wall -O2 -D_FORTIFY_SOURCE=2 -D_GNU_SOURCE +CFLAGS = -g -Wall -O2 -D_FORTIFY_SOURCE=2 CFLAGS += $(KHDR_INCLUDES) TEST_GEN_PROGS := resctrl_tests diff --git a/tools/testing/selftests/ring-buffer/Makefile b/tools/testing/selftests/ring-buffer/Makefile index 627c5fa6d1ab..23605782639e 100644 --- a/tools/testing/selftests/ring-buffer/Makefile +++ b/tools/testing/selftests/ring-buffer/Makefile @@ -1,7 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 CFLAGS += -Wl,-no-as-needed -Wall CFLAGS += $(KHDR_INCLUDES) -CFLAGS += -D_GNU_SOURCE TEST_GEN_PROGS = map_test diff --git a/tools/testing/selftests/riscv/mm/Makefile b/tools/testing/selftests/riscv/mm/Makefile index c333263f2b27..4664ed79e20b 100644 --- a/tools/testing/selftests/riscv/mm/Makefile +++ b/tools/testing/selftests/riscv/mm/Makefile @@ -3,7 +3,7 @@ # Originally tools/testing/arm64/abi/Makefile # Additional include paths needed by kselftest.h and local headers -CFLAGS += -D_GNU_SOURCE -std=gnu99 -I. +CFLAGS += -std=gnu99 -I. TEST_GEN_FILES := mmap_default mmap_bottomup diff --git a/tools/testing/selftests/sgx/Makefile b/tools/testing/selftests/sgx/Makefile index 867f88ce2570..03b5e13b872b 100644 --- a/tools/testing/selftests/sgx/Makefile +++ b/tools/testing/selftests/sgx/Makefile @@ -12,7 +12,7 @@ OBJCOPY := $(CROSS_COMPILE)objcopy endif INCLUDES := -I$(top_srcdir)/tools/include -HOST_CFLAGS := -Wall -Werror -g $(INCLUDES) -fPIC +HOST_CFLAGS := -Wall -Werror -g $(INCLUDES) -fPIC $(CFLAGS) HOST_LDFLAGS := -z noexecstack -lcrypto ENCL_CFLAGS += -Wall -Werror -static-pie -nostdlib -ffreestanding -fPIE \ -fno-stack-protector -mrdrnd $(INCLUDES) diff --git a/tools/testing/selftests/tmpfs/Makefile b/tools/testing/selftests/tmpfs/Makefile index aa11ccc92e5b..3be931e1193f 100644 --- a/tools/testing/selftests/tmpfs/Makefile +++ b/tools/testing/selftests/tmpfs/Makefile @@ -1,6 +1,5 @@ # SPDX-License-Identifier: GPL-2.0-only CFLAGS += -Wall -O2 -CFLAGS += -D_GNU_SOURCE TEST_GEN_PROGS := TEST_GEN_PROGS += bug-link-o-tmpfile
Centralize the _GNU_SOURCE definition to CFLAGS in lib.mk. Remove redundant defines from Makefiles that import lib.mk. Convert any usage of "#define _GNU_SOURCE 1" to "#define _GNU_SOURCE". This uses the form "-D_GNU_SOURCE=", which is equivalent to "#define _GNU_SOURCE". Otherwise using "-D_GNU_SOURCE" is equivalent to "-D_GNU_SOURCE=1" and "#define _GNU_SOURCE 1", which is less commonly seen in source code and would require many changes in selftests to avoid redefinition warnings. Suggested-by: John Hubbard <jhubbard@nvidia.com> Signed-off-by: Edward Liaw <edliaw@google.com> --- tools/testing/selftests/exec/Makefile | 1 - tools/testing/selftests/futex/functional/Makefile | 2 +- tools/testing/selftests/intel_pstate/Makefile | 2 +- tools/testing/selftests/iommu/Makefile | 2 -- tools/testing/selftests/kvm/Makefile | 2 +- tools/testing/selftests/lib.mk | 3 +++ tools/testing/selftests/mm/thuge-gen.c | 2 +- tools/testing/selftests/net/Makefile | 2 +- tools/testing/selftests/net/tcp_ao/Makefile | 2 +- tools/testing/selftests/proc/Makefile | 1 - tools/testing/selftests/resctrl/Makefile | 2 +- tools/testing/selftests/ring-buffer/Makefile | 1 - tools/testing/selftests/riscv/mm/Makefile | 2 +- tools/testing/selftests/sgx/Makefile | 2 +- tools/testing/selftests/tmpfs/Makefile | 1 - 15 files changed, 12 insertions(+), 15 deletions(-)