CROSS_COMPILE is no longer necessary when building with LLVM=1 as of
upstream v5.15-rc1's
commit 231ad7f409f1 ("Makefile: infer --target from ARCH for CC=clang")
which was backported to android13-5.10.
LLVM_IAS=1 is implied by LLVM=1 as of LLVM_IAS as of
upstream v5.15-rc1's
commit f12b034afeb3 ("scripts/Makefile.clang: default to LLVM_IAS=1")
which was backported to android13-5.10.
Bug: 209655537
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Change-Id: Id426f680bba8d478ed300dd0f6551dc419ea345f
There is no need for CROSS_COMPILE_COMPAT as of v5.16-rc1 via
commit 3e6f8d1fa184 ("arm64: vdso32: require CROSS_COMPILE_COMPAT for gcc+bfd")
when LLVM=1 is set. This was backported to v5.10.89.
LINUX_GCC_CROSS_COMPILE_PREBUILTS_BIN was a temporary dependency until
LLVM_IAS=1 was enabled for all architectures. With LLVM_IAS=1 (implied
by LLVM=1), nothing in this directory is used and the variable can be
removed.
It doesn't hurt to respecify any of the above, but they are no longer
necessary.
We may be able to further simplify the usage of LLVM_IAS=1 and
CROSS_COMPILE in android13-5.10 depending on whether the following get
backported in the future:
commit f12b034afeb3 ("scripts/Makefile.clang: default to LLVM_IAS=1").
commit 231ad7f409f1 ("Makefile: infer --target from ARCH for CC=clang")
Bug: 209655537
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Change-Id: I361b05ea9f36da933e6712150650f476b093d0a7
This reverts commit e145f7b103.
AOSP's distribution of GNU binutils always had a curious target triple
prefix on the binaries. Now that GNU binutils is deprecated for Android
Common Kernels, we can now remove this out of tree workaround. Now
building Android kernels with LLVM matches upstream (see
Documentation/kbuild/llvm.rst).
Bug: 118439987
Bug: 120440614
Bug: 141693040
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Change-Id: Iecaa3264a440f795f2f3a44bdf74fe28ad4ed1cc
Module.symvers contains the exported symbols with additional metadata,
which can be used to build kernel modules that use/need them.
Bug: 202914651
Signed-off-by: Isaac Chen <ycchen@google.com>
Change-Id: Ife00f368723f08bfdbe56cb1737ee328e2749d00
The build.config.* files largely contain duplicate information by their
nature. Reorganize them reduce duplication and to allow adding new
configurations without copying the definitions again.
Bug: 140224784
Change-Id: I6a3810a125b0ed48591690ca33bb5c02be58218a
Signed-off-by: Matthias Maennich <maennich@google.com>
