cygwin上的CGAL cmake失败答案

【问题标题】：CGAL cmake on cygwin failscygwin上的CGAL cmake失败
【发布时间】：2014-10-25 12:23:15
【问题描述】：

我正在尝试在 cygwin（Windows 7）上编译 CGAL 4.5。我安装了 gcc-core、gcc-g++ 和 gmp，但是当我尝试运行 cmake 时出现以下错误：

$ cmake .
-- The CXX compiler identification is GNU 4.8.3
CMake Error: Could not find cmake module file:/home/metalab/CGAL-4.5/CMakeFiles/2.8.11.2/CMakeCXXCompiler.cmake
-- The C compiler identification is GNU 4.8.3
CMake Error: Could not find cmake module file:/home/metalab/CGAL-4.5/CMakeFiles/2.8.11.2/CMakeCCompiler.cmake
CMake Warning at /usr/share/cmake-2.8.11.2/Modules/Platform/CYGWIN.cmake:15 (message):
  CMake no longer defines WIN32 on Cygwin!

  (1) If you are just trying to build this project, ignore this warning or
  quiet it by setting CMAKE_LEGACY_CYGWIN_WIN32=0 in your environment or in
  the CMake cache.  If later configuration or build errors occur then this
  project may have been written under the assumption that Cygwin is WIN32.
  In that case, set CMAKE_LEGACY_CYGWIN_WIN32=1 instead.

  (2) If you are developing this project, add the line

    set(CMAKE_LEGACY_CYGWIN_WIN32 0) # Remove when CMake >= 2.8.4 is required

  at the top of your top-level CMakeLists.txt file or set the minimum
  required version of CMake to 2.8.4 or higher.  Then teach your project to
  build on Cygwin without WIN32.
Call Stack (most recent call first):
  /usr/share/cmake-2.8.11.2/Modules/CMakeSystemSpecificInformation.cmake:36 (include)
  CMakeLists.txt:7 (project)


CMake Error: Could not find cmake module file:/home/metalab/CGAL-4.5/CMakeFiles/2.8.11.2/CMakeRCCompiler.cmake
-- Check for working CXX compiler: /usr/bin/c++.exe
CMake Error at /usr/share/cmake-2.8.11.2/Modules/CMakeTestCXXCompiler.cmake:40 (try_compile):
  Unknown extension ".cxx" for file

    /home/metalab/CGAL-4.5/CMakeFiles/CMakeTmp/testCXXCompiler.cxx

  try_compile() works only for enabled languages.  Currently these are:

    C CXX RC

  See project() command to enable other languages.
Call Stack (most recent call first):
  CMakeLists.txt:7 (project)


-- Check for working CXX compiler: /usr/bin/c++.exe -- broken
CMake Error at /usr/share/cmake-2.8.11.2/Modules/CMakeTestCXXCompiler.cmake:54 (message):
  The C++ compiler "/usr/bin/c++.exe" is not able to compile a simple test
  program.

  It fails with the following output:





  CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
  CMakeLists.txt:7 (project)


-- Configuring incomplete, errors occurred!

我已经尝试过使用 CMAKE_LEGACY_CYGWIN_WIN32 但没有成功。

【问题讨论】：

你试过用编译器 c++.exe 编译一个简单的 hello-world 吗？也许你需要安装更多的 cygwin 包才能让它真正工作。
是的，我做到了，它有效。事实上，我已经使用 cygwin 安装来编译 libxml++。
试试 make VERBOSE=1 看看为什么 cmake 说你的 CXX 编译器不工作。

标签： cmake cygwin cgal

【解决方案1】：

我遇到了类似的错误。 cmake 似乎无法从 Cygwin 中找到任何东西。

事实上，您需要运行 Cygwin 版本的 cmake。如果您从安装程序中安装了 cmake，并且它位于 C:\Program Files 下，那么您的 cmake 错误，它不会找到它应该找到的大部分内容。

【讨论】：