mirror of
https://github.com/torvalds/linux.git
synced 2024-12-04 01:51:34 +00:00
eb9b9a6f5a
-O6 is very much not-a-thing. Really, this should've been dropped
entirely in 49b3cd306e ("tools: Set the maximum optimization level
according to the compiler being used") instead of just passing it for
not-Clang.
Just collapse it down to -O3, instead of "-O6 unless Clang, in which case
-O3".
GCC interprets > -O3 as -O3. It doesn't even interpret > -O3 as -Ofast,
which is a good thing, given -Ofast has specific (non-)requirements for
code built using it. So, this does nothing except look a bit daft.
Remove the silliness and also save a few lines in the Makefiles accordingly.
Reviewed-by: Ian Rogers <irogers@google.com>
Reviewed-by: Jesper Juhl <jesperjuhl76@gmail.com>
Signed-off-by: Sam James <sam@gentoo.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Bill Wendling <morbo@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Justin Stitt <justinstitt@google.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: llvm@lists.linux.dev
Link: https://lore.kernel.org/r/4f01524fa4ea91c7146a41e26ceaf9dae4c127e4.1725821201.git.sam@gentoo.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
119 lines
2.7 KiB
Makefile
119 lines
2.7 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
|
|
include ../../scripts/Makefile.include
|
|
include ../../scripts/utilities.mak # QUIET_CLEAN
|
|
|
|
ifeq ($(srctree),)
|
|
srctree := $(patsubst %/,%,$(dir $(CURDIR)))
|
|
srctree := $(patsubst %/,%,$(dir $(srctree)))
|
|
srctree := $(patsubst %/,%,$(dir $(srctree)))
|
|
#$(info Determined 'srctree' to be $(srctree))
|
|
endif
|
|
|
|
CC ?= $(CROSS_COMPILE)gcc
|
|
AR ?= $(CROSS_COMPILE)ar
|
|
LD ?= $(CROSS_COMPILE)ld
|
|
|
|
MAKEFLAGS += --no-print-directory
|
|
|
|
INSTALL = install
|
|
|
|
|
|
# Use DESTDIR for installing into a different root directory.
|
|
# This is useful for building a package. The program will be
|
|
# installed in this directory as if it was the root directory.
|
|
# Then the build tool can move it later.
|
|
DESTDIR ?=
|
|
DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))'
|
|
|
|
LIBFILE = $(OUTPUT)libsymbol.a
|
|
|
|
CFLAGS := $(EXTRA_WARNINGS) $(EXTRA_CFLAGS)
|
|
CFLAGS += -ggdb3 -Wall -Wextra -std=gnu11 -U_FORTIFY_SOURCE -fPIC
|
|
|
|
ifeq ($(DEBUG),0)
|
|
CFLAGS += -O3
|
|
endif
|
|
|
|
ifeq ($(DEBUG),0)
|
|
CFLAGS += -D_FORTIFY_SOURCE
|
|
endif
|
|
|
|
# Treat warnings as errors unless directed not to
|
|
ifneq ($(WERROR),0)
|
|
CFLAGS += -Werror
|
|
endif
|
|
|
|
CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
|
|
|
|
CFLAGS += -I$(srctree)/tools/lib
|
|
CFLAGS += -I$(srctree)/tools/include
|
|
|
|
RM = rm -f
|
|
|
|
SYMBOL_IN := $(OUTPUT)libsymbol-in.o
|
|
|
|
ifeq ($(LP64), 1)
|
|
libdir_relative = lib64
|
|
else
|
|
libdir_relative = lib
|
|
endif
|
|
|
|
prefix ?=
|
|
libdir = $(prefix)/$(libdir_relative)
|
|
|
|
# Shell quotes
|
|
libdir_SQ = $(subst ','\'',$(libdir))
|
|
|
|
all:
|
|
|
|
export srctree OUTPUT CC LD CFLAGS V
|
|
include $(srctree)/tools/build/Makefile.include
|
|
include $(srctree)/tools/scripts/Makefile.include
|
|
|
|
all: fixdep $(LIBFILE)
|
|
|
|
$(SYMBOL_IN): FORCE
|
|
@$(MAKE) $(build)=libsymbol
|
|
|
|
$(LIBFILE): $(SYMBOL_IN)
|
|
$(QUIET_AR)$(RM) $@ && $(AR) rcs $@ $(SYMBOL_IN)
|
|
|
|
define do_install_mkdir
|
|
if [ ! -d '$(DESTDIR_SQ)$1' ]; then \
|
|
$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$1'; \
|
|
fi
|
|
endef
|
|
|
|
define do_install
|
|
if [ ! -d '$2' ]; then \
|
|
$(INSTALL) -d -m 755 '$2'; \
|
|
fi; \
|
|
$(INSTALL) $1 $(if $3,-m $3,) '$2'
|
|
endef
|
|
|
|
install_lib: $(LIBFILE)
|
|
$(call QUIET_INSTALL, $(LIBFILE)) \
|
|
$(call do_install_mkdir,$(libdir_SQ)); \
|
|
cp -fpR $(LIBFILE) $(DESTDIR)$(libdir_SQ)
|
|
|
|
HDRS := kallsyms.h
|
|
INSTALL_HDRS_PFX := $(DESTDIR)$(prefix)/include/symbol
|
|
INSTALL_HDRS := $(addprefix $(INSTALL_HDRS_PFX)/, $(HDRS))
|
|
|
|
$(INSTALL_HDRS): $(INSTALL_HDRS_PFX)/%.h: %.h
|
|
$(call QUIET_INSTALL, $@) \
|
|
$(call do_install,$<,$(INSTALL_HDRS_PFX)/,644)
|
|
|
|
install_headers: $(INSTALL_HDRS)
|
|
$(call QUIET_INSTALL, libsymbol_headers)
|
|
|
|
install: install_lib install_headers
|
|
|
|
clean:
|
|
$(call QUIET_CLEAN, libsymbol) $(RM) $(LIBFILE); \
|
|
find $(or $(OUTPUT),.) -name \*.o -or -name \*.o.cmd -or -name \*.o.d | xargs $(RM)
|
|
|
|
FORCE:
|
|
|
|
.PHONY: clean FORCE
|