请记住，在从源代码构建方面我是一个初学者（尝试了几次，几乎总是失败）。
我正在尝试为运行 Ubuntu 19 的 Raspberry Pi 3b 构建 MySQL Connector/C++ 8。我遵循官方说明并安装了所有先决条件（不能 100% 确定是否codecvt_utf8存在）。
我的构建没有使用 JDBC 和 BOOST。我已经从源代码构建了 OpenSSL 1.1.1。
我正在运行的命令（我--target install直接添加 - 不确定这是否是一个问题）：
cmake .
cmake --build . --target install --config Release
AFAIK 失败了，因为：
CMakeFiles/CMakeTmp/CheckIncludeFile.c:1:10：致命错误：sys/endian.h：没有这样的文件或目录
CMakeFiles/CMakeTmp/CheckIncludeFile.c:1:10：致命错误：sys/byteorder.h：没有这样的文件或目录
我查了一下/usr/include，没有目录sys。它endian.h直接位于顶层，byteorder.h根本不存在。
为什么有些文件丢失了？
如上所述这里，该sys目录位于 Ubuntu 上的不同位置。所以我运行了这个：
ln -s /usr/include/aarch64-linux-gnu/sys /usr/include/sys
但丢失的文件实际上也不在该目录中。
跑步
find /usr/include -type f -name endian.h
find /usr/include -type f -name byteorder.h
显示，这些文件实际上位于 和 中/usr/include/aarch64-linux-gnu/bits/endian.h，/usr/include/aarch64-linux-gnu/asm/byteorder.h我应该链接它们吗？似乎是个坏主意。
完整输出（使用缓存的进度）：
[ 2%] Built target uuid_gen
[ 4%] Building protobuf
[ 27%] Built target protobuf-lite
[ 28%] Building CXX object CMakeFiles/protobuf.dir/protobuf-3.6.1/src/google/protobuf/descriptor.cc.o
c++: fatal error: Killed signal terminated program cc1plus
compilation terminated.
make[5]: *** [CMakeFiles/protobuf.dir/build.make:115: CMakeFiles/protobuf.dir/protobuf-3.6.1/src/google/protobuf/descriptor.cc.o] Error 1
make[4]: *** [CMakeFiles/Makefile2:73: CMakeFiles/protobuf.dir/all] Error 2
make[3]: *** [Makefile:84: all] Error 2
make[2]: *** [cdk/CMakeFiles/build_protobuf.dir/build.make:58: cdk/protobuf/build.stamp] Error 2
make[1]: *** [CMakeFiles/Makefile2:297: cdk/CMakeFiles/build_protobuf.dir/all] Error 2
make: *** [Makefile:130: all] Error 2
完整错误日志：
Performing C++ SOURCE FILE Test HAVE_IS_SAME failed with the following output:
Change Dir: /home/ubuntu/mysql-connector-c++-8.0.18-src/CMakeFiles/CMakeTmp
Run Build Command:"/usr/bin/make" "cmTC_dadf7/fast"
/usr/bin/make -f CMakeFiles/cmTC_dadf7.dir/build.make CMakeFiles/cmTC_dadf7.dir/build
make[1]: Entering directory '/home/ubuntu/mysql-connector-c++-8.0.18-src/CMakeFiles/CMakeTmp'
Building CXX object CMakeFiles/cmTC_dadf7.dir/src.cxx.o
/usr/bin/c++ -DHAVE_IS_SAME -std=c++11 -o CMakeFiles/cmTC_dadf7.dir/src.cxx.o -c /home/ubuntu/mysql-connector-c++-8.0.18-src/CMakeFiles/CMakeTmp/src.cxx
/home/ubuntu/mysql-connector-c++-8.0.18-src/CMakeFiles/CMakeTmp/src.cxx:1:1: error: ‘::main’ must return ‘int’
1 | void main() { return is_same<bool,char>::value; }
| ^~~~
/home/ubuntu/mysql-connector-c++-8.0.18-src/CMakeFiles/CMakeTmp/src.cxx: In function ‘int main()’:
/home/ubuntu/mysql-connector-c++-8.0.18-src/CMakeFiles/CMakeTmp/src.cxx:1:22: error: ‘is_same’ was not declared in this scope
1 | void main() { return is_same<bool,char>::value; }
| ^~~~~~~
/home/ubuntu/mysql-connector-c++-8.0.18-src/CMakeFiles/CMakeTmp/src.cxx:1:30: error: expected primary-expression before ‘bool’
1 | void main() { return is_same<bool,char>::value; }
| ^~~~
/home/ubuntu/mysql-connector-c++-8.0.18-src/CMakeFiles/CMakeTmp/src.cxx:1:30: error: expected ‘;’ before ‘bool’
1 | void main() { return is_same<bool,char>::value; }
| ^~~~
| ;
/home/ubuntu/mysql-connector-c++-8.0.18-src/CMakeFiles/CMakeTmp/src.cxx:1:34: error: expected unqualified-id before ‘,’ token
1 | void main() { return is_same<bool,char>::value; }
| ^
/home/ubuntu/mysql-connector-c++-8.0.18-src/CMakeFiles/CMakeTmp/src.cxx:1:35: error: expected unqualified-id before ‘char’
1 | void main() { return is_same<bool,char>::value; }
| ^~~~
make[1]: *** [CMakeFiles/cmTC_dadf7.dir/build.make:66: CMakeFiles/cmTC_dadf7.dir/src.cxx.o] Error 1
make[1]: Leaving directory '/home/ubuntu/mysql-connector-c++-8.0.18-src/CMakeFiles/CMakeTmp'
make: *** [Makefile:121: cmTC_dadf7/fast] Error 2
Source file was:
void main() { return is_same<bool,char>::value; }
Determining if the include file sys/endian.h exists failed with the following output:
Change Dir: /home/ubuntu/mysql-connector-c++-8.0.18-src/CMakeFiles/CMakeTmp
Run Build Command:"/usr/bin/make" "cmTC_a570b/fast"
/usr/bin/make -f CMakeFiles/cmTC_a570b.dir/build.make CMakeFiles/cmTC_a570b.dir/build
make[1]: Entering directory '/home/ubuntu/mysql-connector-c++-8.0.18-src/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_a570b.dir/CheckIncludeFile.c.o
/usr/bin/cc -o CMakeFiles/cmTC_a570b.dir/CheckIncludeFile.c.o -c /home/ubuntu/mysql-connector-c++-8.0.18-src/CMakeFiles/CMakeTmp/CheckIncludeFile.c
/home/ubuntu/mysql-connector-c++-8.0.18-src/CMakeFiles/CMakeTmp/CheckIncludeFile.c:1:10: fatal error: sys/endian.h: No such file or directory
1 | #include <sys/endian.h>
| ^~~~~~~~~~~~~~
compilation terminated.
make[1]: *** [CMakeFiles/cmTC_a570b.dir/build.make:66: CMakeFiles/cmTC_a570b.dir/CheckIncludeFile.c.o] Error 1
make[1]: Leaving directory '/home/ubuntu/mysql-connector-c++-8.0.18-src/CMakeFiles/CMakeTmp'
make: *** [Makefile:121: cmTC_a570b/fast] Error 2
Determining if the include file sys/byteorder.h exists failed with the following output:
Change Dir: /home/ubuntu/mysql-connector-c++-8.0.18-src/CMakeFiles/CMakeTmp
Run Build Command:"/usr/bin/make" "cmTC_e560b/fast"
/usr/bin/make -f CMakeFiles/cmTC_e560b.dir/build.make CMakeFiles/cmTC_e560b.dir/build
make[1]: Entering directory '/home/ubuntu/mysql-connector-c++-8.0.18-src/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_e560b.dir/CheckIncludeFile.c.o
/usr/bin/cc -o CMakeFiles/cmTC_e560b.dir/CheckIncludeFile.c.o -c /home/ubuntu/mysql-connector-c++-8.0.18-src/CMakeFiles/CMakeTmp/CheckIncludeFile.c
/home/ubuntu/mysql-connector-c++-8.0.18-src/CMakeFiles/CMakeTmp/CheckIncludeFile.c:1:10: fatal error: sys/byteorder.h: No such file or directory
1 | #include <sys/byteorder.h>
| ^~~~~~~~~~~~~~~~~
compilation terminated.
make[1]: *** [CMakeFiles/cmTC_e560b.dir/build.make:66: CMakeFiles/cmTC_e560b.dir/CheckIncludeFile.c.o] Error 1
make[1]: Leaving directory '/home/ubuntu/mysql-connector-c++-8.0.18-src/CMakeFiles/CMakeTmp'
make: *** [Makefile:121: cmTC_e560b/fast] Error 2
cmake 3.13.4
g++ 9.2.1
openssl 1.1.1d
答案1
C++ 编译器似乎内存不足。尝试在使用 make 构建时指定 1 个线程，例如：
$ cd path/to/connector/source
$ mkdir build && cd build
$ cmake .. -DCMAKE_BUILD_TYPE=Release
$ make -j1
（这被称为“无源”建造）
如果失败，并且 Pi 仍然没有足够的内存，请使用该raspi-config工具（以 root 身份运行）调整 Pi 的内存分配，尽可能少地分配给 GPU，并禁用图形登录，以尝试增加内存量释放内存用于编译。然后，重新启动以使更改生效，然后像从控制台一样进行构建。如果一切顺利，您可以raspi-config再次使用将之前修改的设置调整回原始值。如果失败，那么您可能需要考虑在另一台具有更多内存的 Linux 计算机上进行交叉编译。有关如何使用 为 Pi 构建交叉编译工具链crosstool-ng，然后使用它构建 CMake 项目的指南，可以在此处找到：https://blog.kitware.com/cross-compiling-for-raspberry-pi/。