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Linux
- fsl-imx-x11-glibc-x86_64-meta-toolchain-qt5-cortexa7hf-neon-toolchain-4.1.15-2.0.0.sh （md5:4d4182c4d526396a4fb4e22e326d7824）执行时，没有选择默认路径，出现如下情况
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root@zony-VirtualBox:/compile/imux6u# arm-poky-linux-gnueabi-gcc -v
Using built-in specs.
COLLECT_GCC=arm-poky-linux-gnueabi-gcc
COLLECT_LTO_WRAPPER=/compile/imux6u/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi/gcc/arm-poky-linux-gnueabi/5.3.0/lto-wrapper
Target: arm-poky-linux-gnueabi
Configured with: ../../../../../../work-shared/gcc-5.3.0-r0/gcc-5.3.0/configure --build=x86_64-linux --host=x86_64-pokysdk-linux --target=arm-poky-linux-gnueabi --prefix=/opt/fsl-imx-x11/4.1.15-2.0.0/sysroots/x86_64-pokysdk-linux/usr --exec_prefix=/opt/fsl-imx-x11/4.1.15-2.0.0/sysroots/x86_64-pokysdk-linux/usr --bindir=/opt/fsl-imx-x11/4.1.15-2.0.0/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi --***indir=/opt/fsl-imx-x11/4.1.15-2.0.0/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi --libexecdir=/opt/fsl-imx-x11/4.1.15-2.0.0/sysroots/x86_64-pokysdk-linux/usr/libexec/arm-poky-linux-gnueabi --datadir=/opt/fsl-imx-x11/4.1.15-2.0.0/sysroots/x86_64-pokysdk-linux/usr/share --sysconfdir=/opt/fsl-imx-x11/4.1.15-2.0.0/sysroots/x86_64-pokysdk-linux/etc --sharedstatedir=/opt/fsl-imx-x11/4.1.15-2.0.0/sysroots/x86_64-pokysdk-linux/com --localstatedir=/opt/fsl-imx-x11/4.1.15-2.0.0/sysroots/x86_64-pokysdk-linux/var --libdir=/opt/fsl-imx-x11/4.1.15-2.0.0/sysroots/x86_64-pokysdk-linux/usr/lib/arm-poky-linux-gnueabi --includedir=/opt/fsl-imx-x11/4.1.15-2.0.0/sysroots/x86_64-pokysdk-linux/usr/include --oldincludedir=/opt/fsl-imx-x11/4.1.15-2.0.0/sysroots/x86_64-pokysdk-linux/usr/include --infodir=/opt/fsl-imx-x11/4.1.15-2.0.0/sysroots/x86_64-pokysdk-linux/usr/share/info --mandir=/opt/fsl-imx-x11/4.1.15-2.0.0/sysroots/x86_64-pokysdk-linux/usr/share/man --disable-silent-rules --disable-dependency-tracking --with-libtool-sysroot=/home/diskc/home/liyue/poky/fsl-arm-yocto-bsp/build-fb/tmp/sysroots/x86_64-nativesdk-pokysdk-linux --with-gnu-ld --enable-shared --enable-languages=c,c++ --enable-threads=posix --enable-multilib --enable-c99 --enable-long-long --enable-symvers=gnu --enable-libstdcxx-pch --program-prefix=arm-poky-linux-gnueabi- --without-local-prefix --enable-lto --enable-libssp --enable-libitm --disable-bootstrap --disable-libmudflap --with-system-zlib --with-linker-hash-style=gnu --enable-linker-build-id --with-ppl=no --with-cloog=no --enable-checking=release --enable-cheaders=c_global --without-isl --with-gxx-include-dir=/not/exist/usr/include/c++/5.3.0 --with-build-time-tools=/home/diskc/home/liyue/poky/fsl-arm-yocto-bsp/build-fb/tmp/sysroots/x86_64-linux/usr/arm-poky-linux-gnueabi/bin --with-sysroot=/not/exist --with-build-sysroot=/home/diskc/home/liyue/poky/fsl-arm-yocto-bsp/build-fb/tmp/sysroots/imx6ulevk --enable-poison-system-directories --with-mpfr=/home/diskc/home/liyue/poky/fsl-arm-yocto-bsp/build-fb/tmp/sysroots/x86_64-nativesdk-pokysdk-linux --with-mpc=/home/diskc/home/liyue/poky/fsl-arm-yocto-bsp/build-fb/tmp/sysroots/x86_64-nativesdk-pokysdk-linux --enable-nls --with-arch=armv7-a
Thread model: posix
gcc version 5.3.0 (GCC)
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请问：
1）../../../../../../work-shared/gcc-5.3.0-r0/gcc-5.3.0/configure 这个configure是哪里来的，干什么用的？
2）仍有很多默认参数路径 /opt/fsl-imx-x11/4.1.15-2.0.0/ 都有什么作用？
3）/home/diskc/home/liyue/poky/fsl-arm-yocto-bsp/build-fb 这个路径又是怎么来的？
4）发现很多编译链都做成.sh的形式，这个sh是怎么搞出来的？
谢谢
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