diff options
| -rw-r--r-- | Documentation/kbuild/kbuild.rst | 14 | ||||
| -rw-r--r-- | Makefile | 2 | ||||
| -rw-r--r-- | scripts/Makefile.build | 2 | ||||
| -rw-r--r-- | scripts/Makefile.extrawarn | 13 | ||||
| -rw-r--r-- | scripts/Makefile.lib | 4 | ||||
| -rw-r--r-- | scripts/genksyms/Makefile | 2 |
6 files changed, 23 insertions, 14 deletions
diff --git a/Documentation/kbuild/kbuild.rst b/Documentation/kbuild/kbuild.rst index 62f9d86c082c..f1e5dce86af7 100644 --- a/Documentation/kbuild/kbuild.rst +++ b/Documentation/kbuild/kbuild.rst @@ -105,6 +105,15 @@ The output directory can also be specified using "O=...". Setting "O=..." takes precedence over KBUILD_OUTPUT. +KBUILD_EXTRA_WARN +----------------- +Specify the extra build checks. The same value can be assigned by passing +W=... from the command line. + +See `make help` for the list of the supported values. + +Setting "W=..." takes precedence over KBUILD_EXTRA_WARN. + KBUILD_DEBARCH -------------- For the deb-pkg target, allows overriding the normal heuristics deployed by @@ -241,11 +250,6 @@ To get all available archs you can also specify all. E.g.:: $ make ALLSOURCE_ARCHS=all tags -KBUILD_ENABLE_EXTRA_GCC_CHECKS ------------------------------- -If enabled over the make command line with "W=1", it turns on additional -gcc -W... options for more extensive build-time checking. - KBUILD_BUILD_TIMESTAMP ---------------------- Setting this to a date string overrides the timestamp used in the @@ -1538,7 +1538,7 @@ help: @echo ' make C=1 [targets] Check re-compiled c source with $$CHECK (sparse by default)' @echo ' make C=2 [targets] Force check of all c source with $$CHECK' @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' - @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' + @echo ' make W=n [targets] Enable extra build checks, n=1,2,3 where' @echo ' 1: warnings which may be relevant and do not occur too often' @echo ' 2: warnings which occur quite often but may still be relevant' @echo ' 3: more obscure warnings, can most likely be ignored' diff --git a/scripts/Makefile.build b/scripts/Makefile.build index 2a21ca86b720..f72aba64d611 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -85,7 +85,7 @@ else ifeq ($(KBUILD_CHECKSRC),2) cmd_force_checksrc = $(CHECK) $(CHECKFLAGS) $(c_flags) $< endif -ifneq ($(KBUILD_ENABLE_EXTRA_GCC_CHECKS),) +ifneq ($(KBUILD_EXTRA_WARN),) cmd_checkdoc = $(srctree)/scripts/kernel-doc -none $< endif diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn index d226c5fb13e2..53eb7e0c6a5a 100644 --- a/scripts/Makefile.extrawarn +++ b/scripts/Makefile.extrawarn @@ -8,14 +8,19 @@ KBUILD_CFLAGS += $(call cc-disable-warning, packed-not-aligned) +# backward compatibility +KBUILD_EXTRA_WARN ?= $(KBUILD_ENABLE_EXTRA_GCC_CHECKS) + ifeq ("$(origin W)", "command line") - export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W) + KBUILD_EXTRA_WARN := $(W) endif +export KBUILD_EXTRA_WARN + # # W=1 - warnings which may be relevant and do not occur too often # -ifneq ($(findstring 1, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),) +ifneq ($(findstring 1, $(KBUILD_EXTRA_WARN)),) KBUILD_CFLAGS += -Wextra -Wunused -Wno-unused-parameter KBUILD_CFLAGS += -Wmissing-declarations @@ -48,7 +53,7 @@ endif # # W=2 - warnings which occur quite often but may still be relevant # -ifneq ($(findstring 2, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),) +ifneq ($(findstring 2, $(KBUILD_EXTRA_WARN)),) KBUILD_CFLAGS += -Wcast-align KBUILD_CFLAGS += -Wdisabled-optimization @@ -65,7 +70,7 @@ endif # # W=3 - more obscure warnings, can most likely be ignored # -ifneq ($(findstring 3, $(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),) +ifneq ($(findstring 3, $(KBUILD_EXTRA_WARN)),) KBUILD_CFLAGS += -Wbad-function-cast KBUILD_CFLAGS += -Wcast-qual diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index 380a7d11a573..4a0cdd6f5909 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -251,7 +251,7 @@ quiet_cmd_gzip = GZIP $@ DTC ?= $(objtree)/scripts/dtc/dtc # Disable noisy checks by default -ifeq ($(findstring 1,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),) +ifeq ($(findstring 1,$(KBUILD_EXTRA_WARN)),) DTC_FLAGS += -Wno-unit_address_vs_reg \ -Wno-unit_address_format \ -Wno-avoid_unnecessary_addr_size \ @@ -262,7 +262,7 @@ DTC_FLAGS += -Wno-unit_address_vs_reg \ -Wno-pci_device_reg endif -ifneq ($(findstring 2,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),) +ifneq ($(findstring 2,$(KBUILD_EXTRA_WARN)),) DTC_FLAGS += -Wnode_name_chars_strict \ -Wproperty_name_chars_strict endif diff --git a/scripts/genksyms/Makefile b/scripts/genksyms/Makefile index baf44ed0a93a..78629f515e78 100644 --- a/scripts/genksyms/Makefile +++ b/scripts/genksyms/Makefile @@ -12,7 +12,7 @@ genksyms-objs := genksyms.o parse.tab.o lex.lex.o # # Just in case, run "$(YACC) --version" without suppressing stderr # so that 'bison: not found' will be displayed if it is missing. -ifeq ($(findstring 1,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),) +ifeq ($(findstring 1,$(KBUILD_EXTRA_WARN)),) quiet_cmd_bison_no_warn = $(quiet_cmd_bison) cmd_bison_no_warn = $(YACC) --version >/dev/null; \ |