Borislav Petkov | 9e4a664 | 2013-02-20 16:32:29 +0100 | [diff] [blame] | 1 | ifneq ($(O),) |
David Howells | bf35182 | 2012-11-05 21:02:08 +0000 | [diff] [blame] | 2 | ifeq ($(origin O), command line) |
Steven Rostedt | c883122 | 2012-08-13 10:23:02 -0400 | [diff] [blame] | 3 | dummy := $(if $(shell test -d $(O) || echo $(O)),$(error O=$(O) does not exist),) |
| 4 | ABSOLUTE_O := $(shell cd $(O) ; pwd) |
David Howells | bf35182 | 2012-11-05 21:02:08 +0000 | [diff] [blame] | 5 | OUTPUT := $(ABSOLUTE_O)/$(if $(subdir),$(subdir)/) |
Steven Rostedt | c883122 | 2012-08-13 10:23:02 -0400 | [diff] [blame] | 6 | COMMAND_O := O=$(ABSOLUTE_O) |
David Howells | bf35182 | 2012-11-05 21:02:08 +0000 | [diff] [blame] | 7 | ifeq ($(objtree),) |
| 8 | objtree := $(O) |
| 9 | endif |
Borislav Petkov | 98d89bf | 2012-04-11 18:36:14 +0200 | [diff] [blame] | 10 | endif |
Borislav Petkov | 9e4a664 | 2013-02-20 16:32:29 +0100 | [diff] [blame] | 11 | endif |
Borislav Petkov | 98d89bf | 2012-04-11 18:36:14 +0200 | [diff] [blame] | 12 | |
Borislav Petkov | 98d89bf | 2012-04-11 18:36:14 +0200 | [diff] [blame] | 13 | # check that the output directory actually exists |
Borislav Petkov | 9e4a664 | 2013-02-20 16:32:29 +0100 | [diff] [blame] | 14 | ifneq ($(OUTPUT),) |
Borislav Petkov | 98d89bf | 2012-04-11 18:36:14 +0200 | [diff] [blame] | 15 | OUTDIR := $(shell cd $(OUTPUT) && /bin/pwd) |
| 16 | $(if $(OUTDIR),, $(error output directory "$(OUTPUT)" does not exist)) |
| 17 | endif |
| 18 | |
| 19 | # |
| 20 | # Include saner warnings here, which can catch bugs: |
| 21 | # |
Borislav Petkov | d8caf3e | 2012-04-11 18:36:15 +0200 | [diff] [blame] | 22 | EXTRA_WARNINGS := -Wbad-function-cast |
| 23 | EXTRA_WARNINGS += -Wdeclaration-after-statement |
| 24 | EXTRA_WARNINGS += -Wformat-security |
| 25 | EXTRA_WARNINGS += -Wformat-y2k |
| 26 | EXTRA_WARNINGS += -Winit-self |
| 27 | EXTRA_WARNINGS += -Wmissing-declarations |
| 28 | EXTRA_WARNINGS += -Wmissing-prototypes |
| 29 | EXTRA_WARNINGS += -Wnested-externs |
| 30 | EXTRA_WARNINGS += -Wno-system-headers |
| 31 | EXTRA_WARNINGS += -Wold-style-definition |
| 32 | EXTRA_WARNINGS += -Wpacked |
| 33 | EXTRA_WARNINGS += -Wredundant-decls |
| 34 | EXTRA_WARNINGS += -Wshadow |
Borislav Petkov | d8caf3e | 2012-04-11 18:36:15 +0200 | [diff] [blame] | 35 | EXTRA_WARNINGS += -Wstrict-prototypes |
| 36 | EXTRA_WARNINGS += -Wswitch-default |
| 37 | EXTRA_WARNINGS += -Wswitch-enum |
| 38 | EXTRA_WARNINGS += -Wundef |
| 39 | EXTRA_WARNINGS += -Wwrite-strings |
| 40 | EXTRA_WARNINGS += -Wformat |
Borislav Petkov | 98d89bf | 2012-04-11 18:36:14 +0200 | [diff] [blame] | 41 | |
Arnaldo Carvalho de Melo | 093b75e | 2017-02-14 10:34:35 -0300 | [diff] [blame] | 42 | ifneq ($(CC), clang) |
| 43 | EXTRA_WARNINGS += -Wstrict-aliasing=3 |
| 44 | endif |
| 45 | |
Arnaldo Carvalho de Melo | 3337e68 | 2017-02-22 16:54:53 -0300 | [diff] [blame] | 46 | # Hack to avoid type-punned warnings on old systems such as RHEL5: |
| 47 | # We should be changing CFLAGS and checking gcc version, but this |
| 48 | # will do for now and keep the above -Wstrict-aliasing=3 in place |
| 49 | # in newer systems. |
| 50 | # Needed for the __raw_cmpxchg in tools/arch/x86/include/asm/cmpxchg.h |
| 51 | ifneq ($(filter 3.%,$(MAKE_VERSION)),) # make-3 |
| 52 | EXTRA_WARNINGS += -fno-strict-aliasing |
| 53 | endif |
| 54 | |
Borislav Petkov | 98d89bf | 2012-04-11 18:36:14 +0200 | [diff] [blame] | 55 | ifneq ($(findstring $(MAKEFLAGS), w),w) |
| 56 | PRINT_DIR = --no-print-directory |
| 57 | else |
| 58 | NO_SUBDIR = : |
| 59 | endif |
| 60 | |
Masahiro Yamada | 6f0fa58 | 2017-05-19 20:42:30 +0900 | [diff] [blame] | 61 | ifneq ($(findstring s,$(filter-out --%,$(MAKEFLAGS))),) |
Josh Poimboeuf | e572d08 | 2017-01-18 22:16:55 -0600 | [diff] [blame] | 62 | silent=1 |
| 63 | endif |
Josh Poimboeuf | e572d08 | 2017-01-18 22:16:55 -0600 | [diff] [blame] | 64 | |
David Howells | ca9dfc6 | 2012-11-05 15:15:24 +0000 | [diff] [blame] | 65 | # |
| 66 | # Define a callable command for descending to a new directory |
| 67 | # |
| 68 | # Call by doing: $(call descend,directory[,target]) |
| 69 | # |
| 70 | descend = \ |
David Howells | bf35182 | 2012-11-05 21:02:08 +0000 | [diff] [blame] | 71 | +mkdir -p $(OUTPUT)$(1) && \ |
David Howells | 2b73f65 | 2012-11-13 14:14:38 -0300 | [diff] [blame] | 72 | $(MAKE) $(COMMAND_O) subdir=$(if $(subdir),$(subdir)/$(1),$(1)) $(PRINT_DIR) -C $(1) $(2) |
David Howells | ca9dfc6 | 2012-11-05 15:15:24 +0000 | [diff] [blame] | 73 | |
David Howells | bf35182 | 2012-11-05 21:02:08 +0000 | [diff] [blame] | 74 | QUIET_SUBDIR0 = +$(MAKE) $(COMMAND_O) -C # space to separate -C and subdir |
Borislav Petkov | 98d89bf | 2012-04-11 18:36:14 +0200 | [diff] [blame] | 75 | QUIET_SUBDIR1 = |
| 76 | |
Josh Poimboeuf | e572d08 | 2017-01-18 22:16:55 -0600 | [diff] [blame] | 77 | ifneq ($(silent),1) |
Ingo Molnar | 65fb099 | 2013-10-09 11:49:27 +0200 | [diff] [blame] | 78 | ifneq ($(V),1) |
| 79 | QUIET_CC = @echo ' CC '$@; |
Jiri Olsa | bdebbac | 2013-12-19 14:42:03 +0100 | [diff] [blame] | 80 | QUIET_CC_FPIC = @echo ' CC FPIC '$@; |
Ingo Molnar | 65fb099 | 2013-10-09 11:49:27 +0200 | [diff] [blame] | 81 | QUIET_AR = @echo ' AR '$@; |
| 82 | QUIET_LINK = @echo ' LINK '$@; |
| 83 | QUIET_MKDIR = @echo ' MKDIR '$@; |
| 84 | QUIET_GEN = @echo ' GEN '$@; |
Borislav Petkov | 98d89bf | 2012-04-11 18:36:14 +0200 | [diff] [blame] | 85 | QUIET_SUBDIR0 = +@subdir= |
Ingo Molnar | 65fb099 | 2013-10-09 11:49:27 +0200 | [diff] [blame] | 86 | QUIET_SUBDIR1 = ;$(NO_SUBDIR) \ |
| 87 | echo ' SUBDIR '$$subdir; \ |
Borislav Petkov | 98d89bf | 2012-04-11 18:36:14 +0200 | [diff] [blame] | 88 | $(MAKE) $(PRINT_DIR) -C $$subdir |
Ingo Molnar | 65fb099 | 2013-10-09 11:49:27 +0200 | [diff] [blame] | 89 | QUIET_FLEX = @echo ' FLEX '$@; |
| 90 | QUIET_BISON = @echo ' BISON '$@; |
David Howells | bf35182 | 2012-11-05 21:02:08 +0000 | [diff] [blame] | 91 | |
| 92 | descend = \ |
Ingo Molnar | 65fb099 | 2013-10-09 11:49:27 +0200 | [diff] [blame] | 93 | +@echo ' DESCEND '$(1); \ |
David Howells | bf35182 | 2012-11-05 21:02:08 +0000 | [diff] [blame] | 94 | mkdir -p $(OUTPUT)$(1) && \ |
David Howells | 2b73f65 | 2012-11-13 14:14:38 -0300 | [diff] [blame] | 95 | $(MAKE) $(COMMAND_O) subdir=$(if $(subdir),$(subdir)/$(1),$(1)) $(PRINT_DIR) -C $(1) $(2) |
Jiri Olsa | b7248de | 2013-12-19 14:42:00 +0100 | [diff] [blame] | 96 | |
| 97 | QUIET_CLEAN = @printf ' CLEAN %s\n' $1; |
| 98 | QUIET_INSTALL = @printf ' INSTALL %s\n' $1; |
Ingo Molnar | 65fb099 | 2013-10-09 11:49:27 +0200 | [diff] [blame] | 99 | endif |
Borislav Petkov | 98d89bf | 2012-04-11 18:36:14 +0200 | [diff] [blame] | 100 | endif |