@@ -516,7 +516,7 @@ CLANG_FLAGS :=
export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE LD CC
export CPP AR NM STRIP OBJCOPY OBJDUMP READELF PAHOLE RESOLVE_BTFIDS LEX YACC AWK INSTALLKERNEL
-export PERL PYTHON3 CHECK CHECKFLAGS MAKE UTS_MACHINE HOSTCXX
+export PERL PYTHON3 CHECK CHECKFLAGS MAKE MAKE_VERSION UTS_MACHINE HOSTCXX
export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ ZSTD
export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS LDFLAGS_MODULE
@@ -86,6 +86,10 @@ config CC_HAS_ASM_INLINE
config CC_HAS_NO_PROFILE_FN_ATTR
def_bool $(success,echo '__attribute__((no_profile_instrument_function)) int x();' | $(CC) -x c - -c -o /dev/null -Werror)
+config MAKE_VERSION
+ int
+ default $(shell,$(srctree)/scripts/make-version.sh $(MAKE_VERSION))
+
config CONSTRUCTORS
bool
new file mode 100755
@@ -0,0 +1,13 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+#
+# Print the linker name and its version in a 5 or 6-digit form.
+
+set -e
+
+# Convert the version string x.y.z to a canonical 5 or 6-digit form.
+IFS=.
+set -- $1
+
+# If the 2nd or 3rd field is missing, fill it with a zero.
+echo $((10000 * $1 + 100 * ${2:-0} + ${3:-0}))
To check the GNU make version. Used by the LTO Kconfig. LTO with MODVERSIONS will fail in generating correct CRC because the makefile rule doesn't work for make with version 3.8X.[1] Thus we need to check make version during selecting on LTO Kconfig. Add CONFIG_MAKE_VERSION which means MAKE_VERSION in canonical digits for arithmetic comparisons. [1] https://lore.kernel.org/lkml/20210616080252.32046-1-lecopzer.chen@mediatek.com/ Signed-off-by: Lecopzer Chen <lecopzer.chen@mediatek.com> --- Makefile | 2 +- init/Kconfig | 4 ++++ scripts/make-version.sh | 13 +++++++++++++ 3 files changed, 18 insertions(+), 1 deletion(-) create mode 100755 scripts/make-version.sh