kbuild: Fix build with binutils <= 2.19

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / Makefile

diff --git a/Makefile b/Makefile
index 92b8bed3059e5c9fc4e9938a905e00c66ee12f75..d7c42319fe1e9fd77cf9873cd8b949c9f14d9195 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 VERSION = 2
 PATCHLEVEL = 6
-SUBLEVEL = 38
-EXTRAVERSION =
+SUBLEVEL = 39
+EXTRAVERSION = -rc1
 NAME = Flesh-Eating Bats with Fangs
 
 # *DOCUMENTATION*
@@ -102,6 +102,10 @@ ifeq ("$(origin O)", "command line")
   KBUILD_OUTPUT := $(O)
 endif
 
+ifeq ("$(origin W)", "command line")
+  export KBUILD_ENABLE_EXTRA_GCC_CHECKS := 1
+endif
+
 # That's our default target when none is given on the command line
 PHONY := _all
 _all:
@@ -378,6 +382,7 @@ export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV
 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE
 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL
+export KBUILD_ARFLAGS
 
 # When compiling out-of-tree modules, put MODVERDIR in the module
 # tree rather than in the kernel tree. The kernel tree might
@@ -421,7 +426,7 @@ endif
 # of make so .config is not included in this case either (for *config).
 
 no-dot-config-targets := clean mrproper distclean \
-                        cscope TAGS tags help %docs check% coccicheck \
+                        cscope gtags TAGS tags help %docs check% coccicheck \
                         include/linux/version.h headers_% \
                         kernelversion %src-pkg
 
@@ -608,6 +613,9 @@ KBUILD_CFLAGS       += $(call cc-option,-fno-strict-overflow)
 # conserve stack if available
 KBUILD_CFLAGS   += $(call cc-option,-fconserve-stack)
 
+# use the deterministic mode of AR if available
+KBUILD_ARFLAGS := $(call ar-option,D)
+
 # check for 'asm goto'
 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y)
        KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO
@@ -793,15 +801,17 @@ ifdef CONFIG_KALLSYMS
 # o The correct .tmp_kallsyms2.o is linked into the final vmlinux.
 # o Verify that the System.map from vmlinux matches the map from
 #   .tmp_vmlinux2, just in case we did not generate kallsyms correctly.
-# o If CONFIG_KALLSYMS_EXTRA_PASS is set, do an extra pass using
+# o If 'make KALLSYMS_EXTRA_PASS=1" was used, do an extra pass using
 #   .tmp_vmlinux3 and .tmp_kallsyms3.o.  This is only meant as a
 #   temporary bypass to allow the kernel to be built while the
 #   maintainers work out what went wrong with kallsyms.
 
-ifdef CONFIG_KALLSYMS_EXTRA_PASS
-last_kallsyms := 3
-else
 last_kallsyms := 2
+
+ifdef KALLSYMS_EXTRA_PASS
+ifneq ($(KALLSYMS_EXTRA_PASS),0)
+last_kallsyms := 3
+endif
 endif
 
 kallsyms.o := .tmp_kallsyms$(last_kallsyms).o
@@ -812,7 +822,8 @@ define verify_kallsyms
          $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map
        $(Q)cmp -s System.map .tmp_System.map ||                             \
                (echo Inconsistent kallsyms data;                            \
-                echo Try setting CONFIG_KALLSYMS_EXTRA_PASS;                \
+                echo This is a bug - please report about it;                \
+                echo Try "make KALLSYMS_EXTRA_PASS=1" as a workaround;      \
                 rm .tmp_kallsyms* ; /bin/false )
 endef
 
@@ -1018,7 +1029,7 @@ hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm)
 
 PHONY += __headers
 __headers: include/linux/version.h scripts_basic FORCE
-       $(Q)$(MAKE) $(build)=scripts scripts/unifdef
+       $(Q)$(MAKE) $(build)=scripts build_unifdef
 
 PHONY += headers_install_all
 headers_install_all:
@@ -1135,7 +1146,7 @@ CLEAN_FILES +=    vmlinux System.map \
 MRPROPER_DIRS  += include/config usr/include include/generated
 MRPROPER_FILES += .config .config.old .version .old_version             \
                   include/linux/version.h                               \
-                 Module.symvers tags TAGS cscope*
+                 Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS
 
 # clean - Delete most, but leave enough to build external modules
 #
@@ -1222,6 +1233,7 @@ help:
        @echo  '  modules_prepare - Set up for building external modules'
        @echo  '  tags/TAGS       - Generate tags file for editors'
        @echo  '  cscope          - Generate cscope index'
+       @echo  '  gtags           - Generate GNU GLOBAL index'
        @echo  '  kernelrelease   - Output the release version string'
        @echo  '  kernelversion   - Output the version stored in Makefile'
        @echo  '  headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \
@@ -1262,6 +1274,7 @@ help:
        @echo  '  make O=dir [targets] Locate all output files in "dir", including .config'
        @echo  '  make C=1   [targets] Check all c source with $$CHECK (sparse by default)'
        @echo  '  make C=2   [targets] Force check of all c source with $$CHECK'
+       @echo  '  make W=1   [targets] Enable extra gcc checks'
        @echo  ''
        @echo  'Execute "make" or "make all" to build all targets marked with [*] '
        @echo  'For further info see the ./README file'
@@ -1380,7 +1393,7 @@ clean: $(clean-dirs)
 quiet_cmd_tags = GEN     $@
       cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@
 
-tags TAGS cscope: FORCE
+tags TAGS cscope gtags: FORCE
        $(call cmd,tags)
 
 # Scripts to check various things for consistency