Question

我刚刚在Windows 7上彻底安装了以下工具：

MinGW / GCC 4.8.1
Qt 4.8.5
Qt Creator 2.8.1

在PATH中有：C:\Qt\4.8.5\bin;C:\Qt\4.8.5\include;C:\Qt\4.8.5\lib;C:\MinGW\bin;

1）我读到有关Qt 4.8需要GCC 4.6这一事实的警告。我使用GCC 4.8.1忽略了它。所以这可能是一个问题。

2）我成功安装了Qt Creator。我成功构建了默认的Qt GUI应用程序。启动时，我收到错误：“该程序意外完成。”调试我在进入main（）之前，在qatomic_i386.h文件中，在QBasicAtomicInt :: deref（）成员函数中得到了分段错误。
如果我构建一个基于cmake的控制台应用程序，一切都很好。

3）如果我构建一个以前基于Qt cmake的项目（来自命令行或来自Qt Creator），这就是我得到的（在树构建之外）：

我第一次运行cmake：

MyPrj-build>cmake -G "MinGW Makefiles"  ..\MyPrj
CMake Error at C:/Program Files (x86)/CMake 2.8/share/cmake-2.8/Modules/CMakeMinGWFindMake.cmake:20 (message):
  sh.exe was found in your PATH, here:

  C:/Program Files (x86)/Git/bin/sh.exe

  For MinGW make to work correctly sh.exe must NOT be in your path.

  Run cmake from a shell that does not have sh.exe in your PATH.

  If you want to use a UNIX shell, then use MSYS Makefiles.

Call Stack (most recent call first):
  CMakeLists.txt:6 (PROJECT)

CMake Error: Error required internal CMake variable not set, cmake may be not be built correctly.
Missing variable is:
CMAKE_C_COMPILER_ENV_VAR
CMake Error: Error required internal CMake variable not set, cmake may be not be built correctly.
Missing variable is:
CMAKE_C_COMPILER
CMake Error: Could not find cmake module file:S:/MyPrj/MyPrj-build/CMakeFiles/2.8.11.2/CMakeCCompiler.cmake
CMake Error: Error required internal CMake variable not set, cmake may be not be built correctly.
Missing variable is:
CMAKE_CXX_COMPILER_ENV_VAR
CMake Error: Error required internal CMake variable not set, cmake may be not be built correctly.
Missing variable is:
CMAKE_CXX_COMPILER
CMake Error: Could not find cmake module file:S:/MyPrj/MyPrj-build/CMakeFiles/2.8.11.2/CMakeCXXCompiler.cmake
CMake Error: CMAKE_C_COMPILER not set, after EnableLanguage
CMake Error: CMAKE_CXX_COMPILER not set, after EnableLanguage
-- Configuring incomplete, errors occurred!

第二次：

S:\MyPrj\MyPrj-build>cmake -G "MinGW Makefiles"  ..\MyPrj
-- The C compiler identification is GNU 4.8.1
-- The CXX compiler identification is GNU 4.8.1
-- Check for working C compiler: C:/MinGW/bin/gcc.exe
-- Check for working C compiler: C:/MinGW/bin/gcc.exe -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: C:/MinGW/bin/g++.exe
-- Check for working CXX compiler: C:/MinGW/bin/g++.exe -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
CMake Error at C:/Program Files (x86)/CMake 2.8/share/cmake-2.8/Modules/FindQt4.cmake:1382 (message):
  Found unsuitable Qt version "" from NOTFOUND, this code requires Qt 4.x
Call Stack (most recent call first):
  CMakeLists.txt:12 (FIND_PACKAGE)

-- Configuring incomplete, errors occurred!

在第一次和第二次cmake运行中有这些不同的行为是否正常？

为什么系统找不到Qt4？

这三个问题是否相互依赖？

Answer 1

你是如何“安装”你的Qt的？在您的情况下“安装”它的唯一方法是从源代码构建它。通常，在编译Qt-using项目时，需要使用相同的编译器来编译Qt。某些C ++编译器版本不匹配可能会起作用，但您只是表明您的组合没有。

Qt 4.8.5和MinGW / GCC 4.8.1的问题

1 个答案: