從網上可以找到一些ARM toolchain，但是由於Android系統使用的不是glibc而是Bionic libc。因此隻能使用靜態編譯程序。
其實Android的NDK自帶瞭toolchain，但是不能直接使用NDK目錄內的toolchain，否則會出現找不到crtbegin_dynamic.o文件。
即使用-L指定目錄或者直接放到gcc命令行也還是提示該文件找不到。（參考最後附上的鏈接）。
其實Android NDK提供瞭腳本來剝離出單獨的toolchain，腳本的名字叫make-standalone-toolchain.sh
1. 下載Android NDK
https://developer.android.com/sdk/ndk/index.html
我用的是android-ndk-r6b
2. 提取toolchain
可以參考文檔docs/STANDALONE-TOOLCHAIN.html
在linux系統中解壓NDK，假設解壓到/opt;
cd /opt/android-ndk-r6b/
build/tools/make-standalone-toolchain.sh –platform=android-8
expr: warning: unportable BRE: `^\\([^\\-].*\\)$': using `^' as the first character
of the basic regular expression is not portable; it is being ignored
expr: warning: unportable BRE: `^\\(–[^=]*\\)=.*$': using `^' as the first character
of the basic regular expression is not portable; it is being ignored
expr: warning: unportable BRE: `^–[^=]*=\\(.*\\)$': using `^' as the first character
of the basic regular expression is not portable; it is being ignored
Auto-config: –toolchain=arm-linux-androideabi-4.4.3
Copying prebuilt binaries…
Copying sysroot headers and libraries…
Copying libstdc++ headers and libraries…
expr: warning: unportable BRE: `^\\([^\\-].*\\)$': using `^' as the first character
of the basic regular expression is not portable; it is being ignored
expr: warning: unportable BRE: `^\\(–[^=]*\\)=.*$': using `^' as the first character
of the basic regular expression is not portable; it is being ignored
expr: warning: unportable BRE: `^\\(–.*\\)$': using `^' as the first character
of the basic regular expression is not portable; it is being ignored
expr: warning: unportable BRE: `^\\([^\\-].*\\)$': using `^' as the first character
of the basic regular expression is not portable; it is being ignored
expr: warning: unportable BRE: `^\\([^\\-].*\\)$': using `^' as the first character
of the basic regular expression is not portable; it is being ignored
expr: warning: unportable BRE: `^\\([^\\-].*\\)$': using `^' as the first character
of the basic regular expression is not portable; it is being ignored
expr: warning: unportable BRE: `^\\(–[^=]*\\)=.*$': using `^' as the first character
of the basic regular expression is not portable; it is being ignored
expr: warning: unportable BRE: `^–[^=]*=\\(.*\\)$': using `^' as the first character
of the basic regular expression is not portable; it is being ignored
Creating package file: /tmp/ndk-hansel/arm-linux-androideabi-4.4.3.tar.bz2
Cleaning up…
Done.
有一些警告沒有關系，最終得到的是一個壓縮包/tmp/ndk-hansel/arm-linux-androideabi-4.4.3.tar.bz2
註意：這個是我的Linux機器上的目錄。
3. 解壓單獨的toolchain
可以解壓到任意目錄，這裡假設為/opt/
4.寫個hello world 程序試試
hello.c
view plain
#include <stdlib.h>
#include <stdio.h>
int main(int argc, char* argv[])
{
printf("Hello Andriod.\n");
return 0;
}
Makefile
view plain
export PATH:=/opt/android/arm-linux-androideabi-4.4.3/bin:${PATH}
CROSS_COMPILE=arm-linux-androideabi-
CC=$(CROSS_COMPILE)gcc
LD=$(CROSS_COMPILE)ld
PROG=hello
OBJS=hello.o
$(PROG):$(OBJS)
$(CC) $(LDFLAGS) -o $@ $(OBJS)
%.o:%.c
$(CC) -c $(CFLAGS) $< -o $@
clean:
rm -rf *.o $(PROG)
編譯：
make
可以得到hello可執行文件。
$ file hello
hello: ELF 32-bit LSB executable, ARM, version 1 (SYSV), dynamically linked (uses shared libs), not stripped
可見是動態鏈接的。
上傳到手機裡執行。如果用數據線連接瞭手機，而且安裝瞭Android SDK，可以使用adb命令。
adb push hello /system/sbin/hello
adb shell chmod 777 /system/sbin/hello
adb shell /system/sbin/hello
如果沒有SDK，可以在手機裡安裝一個QuickSSHd程序，通過WiFi用Putty之類的軟件連接到手機終端。通過SFTP來傳送文件。
# ./hello
Hello Andriod.
註意： 手機需要有root權限
參考：
https://groups.google.com/group/android-ndk/browse_thread/thread/7506768ccf52cea2?pli=1
摘自 Hansel的專欄