我不知道如何正确编写CMake工具链文件来成功构建Azure IoTHub SDK v1.2.10。
这是我的命令：
azure-iot-sdk-c/build_all/linux# ./build.sh --no-amqp --no-http --no_uploadtoblob --no-logging --toolchain-file mytoolchain.cmake
这是构建结果，ld无法找到-luuid：
Scanning dependencies of target iothub_convenience_sample
[ 69%] Building C object iothub_client/samples/iothub_convenience_sample/CMakeFiles/iothub_convenience_sample.dir/iothub_convenience_sample.c.o
[ 70%] Building C object iothub_client/samples/iothub_convenience_sample/CMakeFiles/iothub_convenience_sample.dir/__/__/__/certs/certs.c.o
[ 71%] Linking C executable iothub_convenience_sample
/usr/local/bin/compile_tool/arm-2010q1/bin/../lib/gcc/arm-none-linux-gnueabi/4.4.1/../../../../arm-none-linux-gnueabi/bin/ld: cannot find -luuid
collect2: ld returned 1 exit status
iothub_client/samples/iothub_convenience_sample/CMakeFiles/iothub_convenience_sample.dir/build.make:128: recipe for target 'iothub_client/samples/iothub_convenience_sample/iothub_convenience_sample' failed
make[2]: *** [iothub_client/samples/iothub_convenience_sample/iothub_convenience_sample] Error 1
CMakeFiles/Makefile2:1327: recipe for target 'iothub_client/samples/iothub_convenience_sample/CMakeFiles/iothub_convenience_sample.dir/all' failed
make[1]: *** [iothub_client/samples/iothub_convenience_sample/CMakeFiles/iothub_convenience_sample.dir/all] Error 2
Makefile:140: recipe for target 'all' failed
make: *** [all] Error 2
以下是我的工具链文件：
INCLUDE(CMakeForceCompiler)
SET(CMAKE_SYSTEM_NAME Linux)
SET(CMAKE_SYSTEM_VERSION 1)
SET(CMAKE_C_COMPILER /usr/local/bin/compile_tool/arm-2010q1/bin/arm-none-linux-gnueabi-gcc)
SET(CMAKE_CXX_COMPILER /usr/local/bin/compile_tool/arm-2010q1/bin/arm-none-linux-gnueabi-g++)
# set OpenSSL path
SET(OPENSSL_SSL_LIBRARY /myspace/application/openssl/libssl.so)
SET(OPENSSL_CRYPTO_LIBRARY /myspace/application/openssl/libcrypto.so)
SET(OPENSSL_INCLUDE_DIR /myspace/application/openssl/include)
# I can use INCLUDE_DIRECTORIES to find uuid.h
INCLUDE_DIRECTORIES(/myspace/application/libuuid/include)
# But I can't link libuuid by setting CMAKE_FIND_ROOT_PATH... Why?
SET(CMAKE_FIND_ROOT_PATH /myspace/application/libuuid/lib)
SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
我已经下载了libuuid源并将其内置到/myspace/application/libuuid/lib/中：
root@my-pc:/myspace/application/libuuid/lib# ls -l
total 116
-rw-r--r-- 1 root root 63258 十一 9 13:57 libuuid.a
-rwxr-xr-x 1 root root 953 十一 9 13:57 libuuid.la
lrwxrwxrwx 1 root root 16 十一 9 13:57 libuuid.so -> libuuid.so.1.0.0
lrwxrwxrwx 1 root root 16 十一 9 13:57 libuuid.so.1 -> libuuid.so.1.0.0
-rwxr-xr-x 1 root root 41893 十一 9 13:57 libuuid.so.1.0.0
drwxr-xr-x 2 root root 4096 十一 9 13:57 pkgconfig
但是，如果我手动将 libuuid.so.1 和 libuuid.so.1.0.0 复制到交叉编译器中的路径（{{1} ），则可以成功链接libuuid。
因此，我认为我的工具链文件中肯定有问题。我尝试使用 CMAKE_EXE_LINKER_FLAGS ， CMAKE_SHARED_LINKER_FLAGS ， link_directories 和 link_libraries ，所有上述操作均失败。 >
我希望有人可以教我如何改善工具链文件。谢谢！
PS。我不想修改Azure IoTHub源以使其保持不变并易于维护。