【发布时间】：2013-08-31 10:34:44
【问题描述】：
我想编写一个程序，使用 ezsdk 6.0 BeagleBoard 中的 D2XX 库从 FTDI 设备读取数据。
我使用Ubuntu 12.04 LTS (Precise Pangolin) 进行编译。
我从http://www.ftdichip.com下载了libftd2xx1.1.12.tar.gz
- 解压存档
- 将 arm926 lib 文件复制到 \usr\local\lib
- 在获得适当许可的情况下创建了符号链接并
- 交叉编译 使用 arm-linux-gnueabihf-gcc 工具链
我关注 (http://www.ftdichip.com/Drivers/D2XX/Linux/ReadMe-linux.txt) 并在交叉编译时显示错误“找不到 -lftd2xx”
shihab@shihab:~/Downloads/release/examples$ make -B CC=arm-linux-gnueabihf-gcc
for n in BitMode EEPROM/erase EEPROM/read EEPROM/write EEPROM/user/read EEPROM/user/size EEPROM/user/write Events LargeRead MultiThread SetVIDPID Simple Timeouts ; do make -C $n || exit 1; done
make[1]: Entering directory `/home/shihab/Downloads/release/examples/BitMode'
arm-linux-gnueabihf-gcc main.c -o bitmode -Wall -Wextra -L. -lftd2xx -Wl,-rpath /usr/local/lib
/usr/lib/gcc/arm-linux-gnueabihf/4.6/../../../../arm-linux-gnueabihf/bin/ld: cannot find -lftd2xx
collect2: ld returned 1 exit status
make[1]: *** [bitmode] Error 1
make[1]: Leaving directory `/home/shihab/Downloads/release/examples/BitMode'
make: *** [subdirs] Error 1
shihab@shihab:~/Downloads/release/examples$
但是当我为 i386 架构使用它时，它编译得很好
- 解压存档
- 已将 i386 lib 文件复制到 \usr\local\lib
- 在获得适当许可的情况下创建了符号链接并
- 编译的 gcc
它编译得很好。
shihab@shihab:~/Downloads/release/examples$ make -B
for n in BitMode EEPROM/erase EEPROM/read EEPROM/write EEPROM/user/read EEPROM/user/size EEPROM/user/write Events LargeRead MultiThread SetVIDPID Simple Timeouts ; do make -C $n || exit 1; done
make[1]: Entering directory `/home/shihab/Downloads/release/examples/BitMode'
gcc main.c -o bitmode -Wall -Wextra -L. -lftd2xx -Wl,-rpath /usr/local/lib
make[1]: Leaving directory `/home/shihab/Downloads/release/examples/BitMode'
make[1]: Entering directory `/home/shihab/Downloads/release/examples/EEPROM/erase'
gcc main.c -o erase -Wall -Wextra -L. -lftd2xx -Wl,-rpath /usr/local/lib
make[1]: Leaving directory `/home/shihab/Downloads/release/examples/EEPROM/erase'
make[1]: Entering directory `/home/shihab/Downloads/release/examples/EEPROM/read'
gcc main.c -o read -Wall -Wextra -L. -lftd2xx -Wl,-rpath /usr/local/lib
make[1]: Leaving directory `/home/shihab/Downloads/release/examples/EEPROM/read'
make[1]: Entering directory `/home/shihab/Downloads/release/examples/EEPROM/write'
gcc main.c -o write -Wall -Wextra -L. -lftd2xx -Wl,-rpath /usr/local/lib
make[1]: Leaving directory `/home/shihab/Downloads/release/examples/EEPROM/write'
make[1]: Entering directory `/home/shihab/Downloads/release/examples/EEPROM/user/read'
gcc main.c -o readua -Wall -Wextra -L. -lftd2xx -Wl,-rpath /usr/local/lib
make[1]: Leaving directory `/home/shihab/Downloads/release/examples/EEPROM/user/read'
make[1]: Entering directory `/home/shihab/Downloads/release/examples/EEPROM/user/size'
gcc main.c -o sizeua -Wall -Wextra -L. -lftd2xx -Wl,-rpath /usr/local/lib
make[1]: Leaving directory `/home/shihab/Downloads/release/examples/EEPROM/user/size'
make[1]: Entering directory `/home/shihab/Downloads/release/examples/EEPROM/user/write'
gcc main.c -o writeua -Wall -Wextra -L. -lftd2xx -Wl,-rpath /usr/local/lib
make[1]: Leaving directory `/home/shihab/Downloads/release/examples/EEPROM/user/write'
make[1]: Entering directory `/home/shihab/Downloads/release/examples/Events'
gcc main.c -o events -Wall -Wextra -L. -lftd2xx -Wl,-rpath /usr/local/lib
make[1]: Leaving directory `/home/shihab/Downloads/release/examples/Events'
make[1]: Entering directory `/home/shihab/Downloads/release/examples/LargeRead'
gcc main.c -o largeread -Wall -Wextra -L. -lftd2xx -Wl,-rpath /usr/local/lib
make[1]: Leaving directory `/home/shihab/Downloads/release/examples/LargeRead'
make[1]: Entering directory `/home/shihab/Downloads/release/examples/MultiThread'
gcc main.c -o multi -Wall -Wextra -L. -lftd2xx -Wl,-rpath /usr/local/lib
make[1]: Leaving directory `/home/shihab/Downloads/release/examples/MultiThread'
make[1]: Entering directory `/home/shihab/Downloads/release/examples/SetVIDPID'
gcc main.c -o setVIDPID -Wall -Wextra -L. -lftd2xx -Wl,-rpath /usr/local/lib
make[1]: Leaving directory `/home/shihab/Downloads/release/examples/SetVIDPID'
make[1]: Entering directory `/home/shihab/Downloads/release/examples/Simple'
gcc main.c -o simple -Wall -Wextra -L. -lftd2xx -Wl,-rpath /usr/local/lib
make[1]: Leaving directory `/home/shihab/Downloads/release/examples/Simple'
make[1]: Entering directory `/home/shihab/Downloads/release/examples/Timeouts'
gcc main.c -o timeouts -Wall -Wextra -L. -lftd2xx -Wl,-rpath /usr/local/lib
make[1]: Leaving directory `/home/shihab/Downloads/release/examples/Timeouts'
shihab@shihab:~/Downloads/release/examples$ cd EEPROM/read/
shihab@shihab:~/Downloads/release/examples/EEPROM/read$ ./read
Library version = 0x10112
Opening port 0
FT_Open(0) failed
shihab@shihab:~/Downloads/release/examples/EEPROM/read$
没有'cannot find -lftd2xx'错误，编译正常。
我是 Linux 新手；我的步骤有什么问题？
【问题讨论】：
-
您添加了编译器“-L”。选项。当前目录是否包含 ARM（非 x86）版本的 libftd2xx.so 或 libftd2xx.a 文件？
-
@MartinRosenau /usr/local/lib 包含 arm 版本的 libftd2xx.so 和 libftd2xx.a
标签： linux shared-libraries ubuntu-12.04 cross-compiling ftdi