cb708ab9f5
It's slightly better to set _GNU_SOURCE in the source code, but if one
must do it via the compiler invocation, then the best way to do so is
this:
$(CC) -D_GNU_SOURCE=
...because otherwise, if this form is used:
$(CC) -D_GNU_SOURCE
...then that leads the compiler to set a value, as if you had passed in:
$(CC) -D_GNU_SOURCE=1
That, in turn, leads to warnings under both gcc and clang, like this:
futex_requeue_pi.c:20: warning: "_GNU_SOURCE" redefined
Fix this by using the "-D_GNU_SOURCE=" form.
Reviewed-by: Edward Liaw <edliaw@google.com>
Reviewed-by: Davidlohr Bueso <dave@stgolabs.net>
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
27 lines
655 B
Makefile
27 lines
655 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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INCLUDES := -I../include -I../../ $(KHDR_INCLUDES)
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CFLAGS := $(CFLAGS) -g -O2 -Wall -D_GNU_SOURCE= -pthread $(INCLUDES) $(KHDR_INCLUDES)
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LDLIBS := -lpthread -lrt
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LOCAL_HDRS := \
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../include/futextest.h \
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../include/atomic.h \
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../include/logging.h
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TEST_GEN_PROGS := \
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futex_wait_timeout \
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futex_wait_wouldblock \
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futex_requeue_pi \
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futex_requeue_pi_signal_restart \
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futex_requeue_pi_mismatched_ops \
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futex_wait_uninitialized_heap \
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futex_wait_private_mapped_file \
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futex_wait \
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futex_requeue \
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futex_waitv
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TEST_PROGS := run.sh
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top_srcdir = ../../../../..
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DEFAULT_INSTALL_HDR_PATH := 1
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include ../../lib.mk
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