source build/envsetup.sh
lunch xx
make showcommands bootimage >build.log
通過引數showcommands 將編譯的命令顯示出來，
比如原來編譯命令是make -j4 但是編譯的細節沒看到，如果要顯示編譯的命令可以用引數showcommands
a.touch buld_kernel.sh
b.複製第二步編譯的build.log中 bin/bash -c 開始的每一段到buld_kernel.sh裡
c.在指令碼之前加上 source 和 lunch 就可以了
d.增加可執行全限
chmod +x buld_kernel.sh
./build_kernel.sh
注：以後每次編譯使用這個指令碼就可以了
下面是製作的指令碼
source build/envsetup.sh
lunch 19
/bin/bash -c "(if [ ! -z \"hq_sdm450_defconfig\" ]; then rm -f ../../out/target/product/hq_sdm450/obj/kernel/msm-4.9/.config; make -j2 -c kernel/msm-4.9 o=../../out/target/product/hq_sdm450/obj/kernel/msm-4.9 dtc_ext=dtc config_build_arm64_dt_overlay=y arch=arm64 cross_compile=aarch64-linux-android- hq_sdm450_defconfig; make -j2 -c kernel/msm-4.9 o=../../out/target/product/hq_sdm450/obj/kernel/msm-4.9 dtc_ext=dtc config_build_arm64_dt_overlay=y arch=arm64 cross_compile=aarch64-linux-android- headers_install; if [ -d \"out/target/product/hq_sdm450/obj/kernel/msm-4.9/usr/include/bringup_headers\" ]; then cp -rf out/target/product/hq_sdm450/obj/kernel/msm-4.9/usr/include/bringup_headers/* out/target/product/hq_sdm450/obj/kernel/msm-4.9/usr/include/ ; fi ; fi ) && (if [ \"hq_sdm450_defconfig\" != \"hq_sdm450_defconfig\" ]; then echo \"used a different defconfig for header generation\"; rm -f ../../out/target/product/hq_sdm450/obj/kernel/msm-4.9/.config; make -j2 -c kernel/msm-4.9 o=../../out/target/product/hq_sdm450/obj/kernel/msm-4.9 dtc_ext=dtc config_build_arm64_dt_overlay=y arch=arm64 cross_compile=aarch64-linux-android- hq_sdm450_defconfig; fi ) && (if [ ! -z \"\" ]; then echo \"overriding kernel config with ''\"; echo >> out/target/product/hq_sdm450/obj/kernel/msm-4.9/.config; make -j2 -c kernel/msm-4.9 o=../../out/target/product/hq_sdm450/obj/kernel/msm-4.9 dtc_ext=dtc config_build_arm64_dt_overlay=y arch=arm64 cross_compile=aarch64-linux-android- oldconfig; fi )"
/bin/bash -c "(rm -rf out/target/product/hq_sdm450/obj/kernel_obj ) && (ln -s kernel/msm-4.9 out/target/product/hq_sdm450/obj/kernel_obj )"
/bin/bash -c "(rm -rf out/target/product/hq_sdm450/obj/kernel/msm-4.9/arch/arm64/boot/dts ) && (make -j2 -c kernel/msm-4.9 o=../../out/target/product/hq_sdm450/obj/kernel/msm-4.9 dtc_ext=dtc config_build_arm64_dt_overlay=y arch=arm64 cross_compile=aarch64-linux-android- kcflags=-mno-android ) && (make -j2 -c kernel/msm-4.9 o=../../out/target/product/hq_sdm450/obj/kernel/msm-4.9 dtc_ext=dtc config_build_arm64_dt_overlay=y arch=arm64 cross_compile=aarch64-linux-android- kcflags=-mno-android modules ) && (make -j2 -c kernel/msm-4.9 o=../../out/target/product/hq_sdm450/obj/kernel/msm-4.9 install_mod_path=../../../dlkm install_mod_strip=1 dtc_ext=dtc config_build_arm64_dt_overlay=y arch=arm64 cross_compile=aarch64-linux-android- modules_install ) && (mdpath=\`find out/target/product/hq_sdm450/dlkm/lib/modules -type f -name modules.dep\`; if [ \"\$mdpath\" != \"\" ];then mpath=\`dirname \$mdpath\`; ko=\`find \$mpath/kernel -type f -name *.ko\`; for i in \$ko; do mv \$i out/target/product/hq_sdm450/dlkm/lib/modules/; done; fi ) && (mdpath=\`find out/target/product/hq_sdm450/dlkm/lib/modules -type f -name modules.dep\`; if [ \"\$mdpath\" != \"\" ];then mpath=\`dirname \$mdpath\`; rm -rf \$mpath; fi )"
/bin/bash -c "(rm -f out/target/product/hq_sdm450/kernel ) && (cp \"out/target/product/hq_sdm450/obj/kernel/msm-4.9/arch/arm64/boot/image.gz-dtb\" \"out/target/product/hq_sdm450/kernel\" )"
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