在cygwin下编译ffmpeg时出现如果错误 ，跪求大牛指点
LD libswscale/libswscale-4.so
d:/worktool/android-ndk-r10c/toolchains/arm-linux-androideabi-4.9/prebuilt/windows-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.9/../../../../arm-linux-androideabi/bin/ld.exe: error: libavutil/libavutil.so:1:1: syntax error, unexpected '!', expecting $end
d:/worktool/android-ndk-r10c/toolchains/arm-linux-androideabi-4.9/prebuilt/windows-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.9/../../../../arm-linux-androideabi/bin/ld.exe: error: libavutil/libavutil.so: not an object or archive
collect2.exe: error: ld returned 1 exit status
library.mak:97: recipe for target 'libswscale/libswscale-4.so' failed
make: *** [libswscale/libswscale-4.so] Error 1
ffmpeg的configure的配置已经完成，配置的sh脚本如下：
#!/bin/bash
NDK=D:/worktool/android-ndk-r10c
SYSROOT=$NDK/platforms/android-21/arch-arm
TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/windows-x86_64
function build_one
{
./configure \
--prefix=$PREFIX \
--enable-shared \
--disable-static \
--disable-doc \
--disable-ffmpeg \
--disable-ffplay \
--disable-ffprobe \
--disable-ffserver \
--disable-avdevice \
--disable-doc \
--disable-symver \
--cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi- \
--target-os=linux \
--arch=arm \
--enable-cross-compile \
--sysroot=$SYSROOT \
--extra-cflags="-Os -fpic $ADDI_CFLAGS" \
--extra-ldflags="$ADDI_LDFLAGS" \
$ADDITIONAL_CONFIGURE_FLAG
}
CPU=arm
PREFIX=$(pwd)/android/$CPU
ADDI_CFLAGS="-marm"
build_one
