Merge pull request !67 from Caoruihong/optimize_build_scripts

Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: Ie1c166b7b4c196fd386b63d21651f774f4bb5720

Merge pull request !65 from Caoruihong/v21.02

Merge pull request !66 from Zachery Wu/zzzuo

Signed-off-by: NZachery Wu <wuzuoyu@huawei.com>
Change-Id: I420bb2c882de03a9017c104c8b5fdd7f095d6316

Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I6303a0f3d54665273e7fb7e4c2e17da803171480

Merge pull request !64 from Harylee/qemu

close #I452A7
Signed-off-by: NHaryslee <lihao189@huawei.com>
Change-Id: I4c98693485d790a3345ca6261e25161d5f70bfec

Merge pull request !63 from Caoruihong/multi_arch_uapi

Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I8e38edcba4f9a858bac6a732a7ad8260a9f9648a

Merge pull request !60 from SimonLi/master

Signed-off-by: NSimonLi <likailong@huawei.com>

Merge pull request !59 from SimonLi/master

Signed-off-by: NSimonLi <likailong@huawei.com>

Merge pull request !58 from dhy308/master

Signed-off-by: Ndhy308 <tony.gan@huawei.com>

Merge pull request !57 from Caoruihong/libc_dir

most fs.yml need this old dir structures
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: Ib2a5d230741ae1babb99078fbf0ec02810f4eaa3

Merge pull request !56 from Caoruihong/strip_libc

libc and libc++ should be stripped before packing into rootfs
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I303c03debdaa29bbefeb39e62a0ffd44764304a8

Merge pull request !55 from Harylee/mem

背景：内存调测模块编译时依赖libunwind.a库，编译时若不显式指定-lunwind链接选项对于依赖该库的程序
会编译报错。
修复：由于对链接libc.a库的所有程序添加对应的链接选项不现实，故将libunwind.a打包进libc.a，使得依
赖libunwind.a的所有程序无需显式链接unwind库即可链接成功。

close #I42O66
Signed-off-by: NHaryslee <lihao189@huawei.com>
Change-Id: I52965869e53e09e6a2596b958c63f299a3c7c8cc

Merge pull request !53 from Caoruihong/build_gn

--path is mandatory for build_ext_component target.
asmflags also need target, sysroot and arch cflags.
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: Ief0a740abfcf8be41fbcbced5d965a54490c2659

Merge pull request !52 from Caoruihong/remove_unused_files

optimize Makefile and remove unused files
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I10061f5f391422c96aa4bd041458d381d0b4a4e4

Merge pull request !51 from Caoruihong/fix_arch_cflags

when board_configed_sysroot is not empty, there is an error
raised in building saying arch_cflags not defined.
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I771d064c1a9b17c0262fc9c15bc90acbf6a9c6ae

Merge pull request !50 from Caoruihong/build_linux_out

make linux uapi headers in linux kernel dir will dirty
the linux kernel dir
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I0414342bb0f8857b1dd955a011143ab522ab599d

Merge pull request !49 from Caoruihong/PREBUILTLINUXHDRDIR

use LINUXHDRDIR instead of PREBUILTLINUXHDRDIR as inner variable for
supporting linux uapi header path passing by command line.
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I73a3f05462856168189641f1d1b3b0dabb28a3dd

Merge pull request !48 from Caoruihong/revert_remove_sysroot

This reverts commit f73d3d8c.
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: Ib766ba448a923fd334ad15a6f6b54412eaf0e742

Merge pull request !45 from Caoruihong/linux_uapi

Merge pull request !47 from Caoruihong/remove_sysroot

sysroot should be auto generated at build time.
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: Ic5437172c3720b43f20ee1475300a493026ed973

the //kernel/linux-4.19 kernel is not the final codes used to
generate linux kernel image, it is patched before compile.
so we should use the patched kernel source to generate uapi
header files.
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: Id229522e2d10a4960ca010a2742bf2ca4cc9264c

Merge pull request !44 from Caoruihong/quote_toolchain

clang with ccache cause toolchain prefix with blank char,
so it is better quote toolchain pathes with quotes
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I617aa00c9558dcdcd9f25213cd5d9f30536dcced