diff options
Diffstat (limited to 'lib/Makefile')
| -rw-r--r-- | lib/Makefile | 39 |
1 files changed, 32 insertions, 7 deletions
diff --git a/lib/Makefile b/lib/Makefile index b1c42c10073b..e290fc5707ea 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -3,10 +3,7 @@ # Makefile for some libs needed in the kernel. # -ifdef CONFIG_FUNCTION_TRACER -ORIG_CFLAGS := $(KBUILD_CFLAGS) -KBUILD_CFLAGS = $(subst $(CC_FLAGS_FTRACE),,$(ORIG_CFLAGS)) -endif +ccflags-remove-$(CONFIG_FUNCTION_TRACER) += $(CC_FLAGS_FTRACE) # These files are disabled because they produce lots of non-interesting and/or # flaky coverage that is not a function of syscall inputs. For example, @@ -22,7 +19,7 @@ KCOV_INSTRUMENT_fault-inject.o := n ifdef CONFIG_AMD_MEM_ENCRYPT KASAN_SANITIZE_string.o := n -CFLAGS_string.o := $(call cc-option, -fno-stack-protector) +CFLAGS_string.o := -fno-stack-protector endif # Used by KCSAN while enabled, avoid recursion. @@ -37,7 +34,6 @@ lib-y := ctype.o string.o vsprintf.o cmdline.o \ nmi_backtrace.o nodemask.o win_minmax.o memcat_p.o lib-$(CONFIG_PRINTK) += dump_stack.o -lib-$(CONFIG_MMU) += ioremap.o lib-$(CONFIG_SMP) += cpumask.o lib-y += kobject.o klist.o @@ -99,6 +95,30 @@ obj-$(CONFIG_TEST_MEMINIT) += test_meminit.o obj-$(CONFIG_TEST_LOCKUP) += test_lockup.o obj-$(CONFIG_TEST_HMM) += test_hmm.o +# +# CFLAGS for compiling floating point code inside the kernel. x86/Makefile turns +# off the generation of FPU/SSE* instructions for kernel proper but FPU_FLAGS +# get appended last to CFLAGS and thus override those previous compiler options. +# +FPU_CFLAGS := -mhard-float -msse -msse2 +ifdef CONFIG_CC_IS_GCC +# Stack alignment mismatch, proceed with caution. +# GCC < 7.1 cannot compile code using `double` and -mpreferred-stack-boundary=3 +# (8B stack alignment). +# See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53383 +# +# The "-msse" in the first argument is there so that the +# -mpreferred-stack-boundary=3 build error: +# +# -mpreferred-stack-boundary=3 is not between 4 and 12 +# +# can be triggered. Otherwise gcc doesn't complain. +FPU_CFLAGS += $(call cc-option,-msse -mpreferred-stack-boundary=3,-mpreferred-stack-boundary=4) +endif + +obj-$(CONFIG_TEST_FPU) += test_fpu.o +CFLAGS_test_fpu.o += $(FPU_CFLAGS) + obj-$(CONFIG_TEST_LIVEPATCH) += livepatch/ obj-$(CONFIG_KUNIT) += kunit/ @@ -170,6 +190,7 @@ lib-$(CONFIG_DECOMPRESS_LZMA) += decompress_unlzma.o lib-$(CONFIG_DECOMPRESS_XZ) += decompress_unxz.o lib-$(CONFIG_DECOMPRESS_LZO) += decompress_unlzo.o lib-$(CONFIG_DECOMPRESS_LZ4) += decompress_unlz4.o +lib-$(CONFIG_DECOMPRESS_ZSTD) += decompress_unzstd.o obj-$(CONFIG_TEXTSEARCH) += textsearch.o obj-$(CONFIG_TEXTSEARCH_KMP) += ts_kmp.o @@ -300,7 +321,7 @@ endif UBSAN_SANITIZE_ubsan.o := n KASAN_SANITIZE_ubsan.o := n KCSAN_SANITIZE_ubsan.o := n -CFLAGS_ubsan.o := $(call cc-option, -fno-stack-protector) $(DISABLE_STACKLEAK_PLUGIN) +CFLAGS_ubsan.o := -fno-stack-protector $(DISABLE_STACKLEAK_PLUGIN) obj-$(CONFIG_SBITMAP) += sbitmap.o @@ -315,6 +336,10 @@ obj-$(CONFIG_GENERIC_LIB_CMPDI2) += cmpdi2.o obj-$(CONFIG_GENERIC_LIB_UCMPDI2) += ucmpdi2.o obj-$(CONFIG_OBJAGG) += objagg.o +# pldmfw library +obj-$(CONFIG_PLDMFW) += pldmfw/ + # KUnit tests obj-$(CONFIG_LIST_KUNIT_TEST) += list-test.o obj-$(CONFIG_LINEAR_RANGES_TEST) += test_linear_ranges.o +obj-$(CONFIG_BITS_TEST) += test_bits.o |