[英]How to change the C++ compiler in Cygwin?
I am using windows, and I need to compile a cpp file.我用的是windows,需要编译一个cpp文件。 I am using Cygwin to run the command
sh
.我正在使用 Cygwin 运行命令
sh
。 I have already MinGw installed.我已经安装了 MinGw。 The problem is that when I run the command, I find that Cygwin is calling the compiler of MinGw.
问题是当我运行命令时,我发现 Cygwin 正在调用 MinGw 的编译器。 Here is a trace of the error i get:
这是我得到的错误的痕迹:
$ sh build_cpp.sh
mkdir: cannot create directory ‘build’: File exists
-- The CXX compiler identification is GNU 7.2.0
-- Check for working CXX compiler: /cygdrive/c/MinGW-124/MinGW-CPTR-124/bin/g++.exe
-- Check for working CXX compiler: /cygdrive/c/MinGW-124/MinGW-CPTR-124/bin/g++.exe -- broken
CMake Error at /usr/share/cmake-3.14.5/Modules/CMakeTestCXXCompiler.cmake:53 (message):
The C++ compiler
"/cygdrive/c/MinGW-124/MinGW-CPTR-124/bin/g++.exe"
is not able to compile a simple test program.
It fails with the following output:
Change Dir: /cygdrive/c/users/user/PycharmProjects/crnn-master/src/cpp/build/CMakeFiles/CMakeTmp
Run Build Command(s):/usr/bin/make.exe cmTC_71c00/fast
/usr/bin/make -f CMakeFiles/cmTC_71c00.dir/build.make CMakeFiles/cmTC_71c00.dir/build
make[1]: Entering directory '/cygdrive/c/users/user/PycharmProjects/crnn-master/src/cpp/build/CMakeFiles/CMakeTmp'
Building CXX object CMakeFiles/cmTC_71c00.dir/testCXXCompiler.cxx.o
/cygdrive/c/MinGW-124/MinGW-CPTR-124/bin/g++.exe -o CMakeFiles/cmTC_71c00.dir/testCXXCompiler.cxx.o -c /cygdrive/c/users/user/PycharmProjects/crnn-master/src/cpp/build/CMakeFiles/CMakeTmp/testCXXCompiler.cxx
g++.exe: error: /cygdrive/c/users/user/PycharmProjects/crnn-master/src/cpp/build/CMakeFiles/CMakeTmp/testCXXCompiler.cxx: No such file or directory
g++.exe: fatal error: no input files
compilation terminated.
make[1]: *** [CMakeFiles/cmTC_71c00.dir/build.make:66: CMakeFiles/cmTC_71c00.dir/testCXXCompiler.cxx.o] Error 1
make[1]: Leaving directory '/cygdrive/c/users/user/PycharmProjects/crnn-master/src/cpp/build/CMakeFiles/CMakeTmp'
make: *** [Makefile:121: cmTC_71c00/fast] Error 2
CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
CMakeLists.txt:3 (PROJECT)
-- Configuring incomplete, errors occurred!
See also "/cygdrive/c/users/user/PycharmProjects/crnn-master/src/cpp/build/CMakeFiles/CMakeOutput.log".
See also "/cygdrive/c/users/user/PycharmProjects/crnn-master/src/cpp/build/CMakeFiles/CMakeError.log".
make: *** No targets specified and no makefile found. Stop.
cp: cannot stat '*.so': No such file or directory
I tried changing the variables of environment, installing devel package and changing the cache variables (CMAKE_CXX_COMPILER, CMAKE_CC_COMPILER) with the command cmake -d
.我尝试更改环境变量,安装 devel package 并使用命令
cmake -d
更改缓存变量(CMAKE_CXX_COMPILER,CMAKE_CC_COMPILER)。 Where can I change the compiler of Cygwin so it will uses its compiler?我在哪里可以更改 Cygwin 的编译器以便它使用它的编译器?
I might be due to your Windows path variable.我可能是由于您的 Windows 路径变量。 If you have multiple binaries named g++ including one from mingw, you should add the correct one to your environment variable and remove the others.
如果您有多个名为 g++ 的二进制文件,其中一个来自 mingw,则应将正确的一个添加到您的环境变量中并删除其他的。 Also make use of the command
which g++
to know which binary would be used.还可以使用命令
which g++
来了解将使用哪个二进制文件。 You can also maybe provide the full path of the right compiler as a workaround.您也可以提供正确编译器的完整路径作为解决方法。
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