linux mingw64 lzo,使用MingW-w64 编译 64bit Qt5
现在Qt官方提供的mingw编译器的预编译版本都是32bit的，如果想使用64bit的话需要自己手动进行编译。
自己编译的话只需要下载mingw-w64编译器和Qt的源码，之前在官方Wiki上看到还需要Perl，实际测试发现没有Perl也可以正常编译。
mingw-w64直接去mingw-w64官网下载就可以了，选择MingW-W64-builds下载。安装时记得架构记得选择x86_64，版本的话选择最新的就可以了，我编译时使用的是8.1.0没有问题。
Qt源码的话也去Qt官网下载，5.9.6版本的下载地址为http://download.qt.io/archive/qt/5.9/5.9.6/single/qt-everywhere-opensource-src-5.9.6.zip，其他版本的可以到http://download.qt.io/archive/qt/ 到对应目录下载，如果下载预编译版本不想注册的话也可以直接从这里下载安装包。
下载好Qt安装包后直接进行解压，解压完成后需要注意默认解压出的路径比较长比如E:\qt-everywhere-opensource-src-5.9.6\qt-everywhere-opensource-src-5.9.6，mingw存在bug，太长的路径编译会报错，找不到相应的头文件’ No such file or directory #include “… qfreetypefontdatabase_p.h”‘。
解压完成后，在源文件夹目录新建以下bat脚本，QtPrefixDir为执行make install命令时安装的目录、MingwDir为安装的mingw-w64的路径。
Shell
@echo off
rem ====================CONFIGURE BEFORE RUN SCRIPT!!======================
set QtSrcDir=%CD%
set QtPrefixDir=C:\Qt\5.9.1-x64
set MingwDir=C:\mingw-w64\x86_64-7.1.0-posix-seh-rt_v5-rev0\mingw64\
set BuildType=-debug-and-release
set QtSPEC=win32-g++
set LANG = en
rem =======================================================================
PATH = %MingwDir%\bin;%MingwDir%\opt\bin;%SystemRoot%\system32;%SystemRoot%
set QT_INSTALL_PREFIX = %QtStaticDir%
set OldDir=%CD%
cd %QtSrcDir%
cmd /C "configure.bat -shared %BuildType% -platform %QtSPEC% -prefix %QtPrefixDir% -opensource -confirm-license -c++std c++14 -nomake examples -skip wayland -skip purchasing -skip serialbus -skip qtserialport -skip script -skip scxml -skip speech -skip location -no-opengl -qt-zlib -qt-pcre -qt-libpng -qt-libjpeg -qt-freetype -no-openssl"
if ERRORLEVEL 1 goto :error
mingw32-make -r -k -s -j4
if ERRORLEVEL 1 goto :error
mingw32-make -k install
if ERRORLEVEL 1 goto :error
set FILE_TO_PATCH=%QtPrefixDir%\mkspecs\win32-g++\qmake.conf
echo.>>%FILE_TO_PATCH%
echo CONFIG += static>>%FILE_TO_PATCH%
echo ============BUILT!============
goto exitX
:error
echo ============ERROR!============
:exitX
pause
cd %OldDir%
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@echooff
rem====================CONFIGUREBEFORERUNSCRIPT!!======================
setQtSrcDir=%CD%
setQtPrefixDir=C:\Qt\5.9.1-x64
setMingwDir=C:\mingw-w64\x86_64-7.1.0-posix-seh-rt_v5-rev0\mingw64\
setBuildType=-debug-and-release
setQtSPEC=win32-g++
setLANG=en
rem=======================================================================
PATH=%MingwDir%\bin;%MingwDir%\opt\bin;%SystemRoot%\system32;%SystemRoot%
setQT_INSTALL_PREFIX=%QtStaticDir%
setOldDir=%CD%
cd%QtSrcDir%
cmd/C"configure.bat -shared %BuildType% -platform %QtSPEC% -prefix %QtPrefixDir% -opensource -confirm-license -c++std c++14 -nomake examples -skip wayland -skip purchasing -skip serialbus -skip qtserialport -skip script -skip scxml -skip speech -skip location -no-opengl -qt-zlib -qt-pcre -qt-libpng -qt-libjpeg -qt-freetype -no-openssl"
ifERRORLEVEL1goto:error
mingw32-make-r-k-s-j4
ifERRORLEVEL1goto:error
mingw32-make-kinstall
ifERRORLEVEL1goto:error
setFILE_TO_PATCH=%QtPrefixDir%\mkspecs\win32-g++\qmake.conf
echo.>>%FILE_TO_PATCH%
echoCONFIG+=static>>%FILE_TO_PATCH%
echo============BUILT!============
gotoexitX
:error
echo============ERROR!============
:exitX
pause
cd%OldDir%
以上的编译的是动态链接库，如果要静态链接库的话可以用下面的脚本。
Shell
@echo off
rem ====================CONFIGURE BEFORE RUN SCRIPT!!======================
set QtSrcDir=%CD%\qt-everywhere-opensource-src-5.9.1
set QtPrefixDir=C:\Qt\5.9.1-x64-static
set MingwDir=C:\mingw-w64\x86_64-7.1.0-posix-seh-rt_v5-rev0\mingw64\
set BuildType=-release
set QtSPEC=win32-g++
set LANG = en
rem =======================================================================
PATH = %MingwDir%\bin;%MingwDir%\opt\bin;%SystemRoot%\system32;%SystemRoot%
set FILE_TO_PATCH=%QtSrcDir%\qtbase\mkspecs\win32-g++\qmake.conf
echo %FILE_TO_PATCH%
if exist %FILE_TO_PATCH%.patched goto skipPatch
type %FILE_TO_PATCH%>%FILE_TO_PATCH%.patched
echo.>>%FILE_TO_PATCH%
echo QMAKE_LFLAGS += -static -static-libgcc>>%FILE_TO_PATCH%
echo QMAKE_CFLAGS_RELEASE -= -O2>>%FILE_TO_PATCH%
echo QMAKE_CFLAGS_RELEASE += -Os -momit-leaf-frame-pointer>>%FILE_TO_PATCH%
echo DEFINES += QT_STATIC_BUILD>>%FILE_TO_PATCH%
:skipPatch
set QT_INSTALL_PREFIX = %QtStaticDir%
set OldDir=%CD%
cd %QtSrcDir%
cmd /C "configure.bat -shared %BuildType% -platform %QtSPEC% -prefix %QtPrefixDir% -opensource -confirm-license -c++std c++14 -nomake examples -skip wayland -skip purchasing -skip serialbus -skip qtserialport -skip script -skip scxml -skip speech -skip location -no-opengl -qt-zlib -qt-pcre -qt-libpng -no-libjpeg -qt-freetype -no-openssl"
if ERRORLEVEL 1 goto :error
mingw32-make -r -k -s -j4
if ERRORLEVEL 1 goto :error
mingw32-make -k install
if ERRORLEVEL 1 goto :error
set FILE_TO_PATCH=%QtPrefixDir%\mkspecs\win32-g++\qmake.conf
echo.>>%FILE_TO_PATCH%
echo CONFIG += static>>%FILE_TO_PATCH%
echo ============BUILT!============
goto exitX
:error
echo ============ERROR!============
:exitX
pause
cd %OldDir%
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@echooff
rem====================CONFIGUREBEFORERUNSCRIPT!!======================
setQtSrcDir=%CD%\qt-everywhere-opensource-src-5.9.1
setQtPrefixDir=C:\Qt\5.9.1-x64-static
setMingwDir=C:\mingw-w64\x86_64-7.1.0-posix-seh-rt_v5-rev0\mingw64\
setBuildType=-release
setQtSPEC=win32-g++
setLANG=en
rem=======================================================================
PATH=%MingwDir%\bin;%MingwDir%\opt\bin;%SystemRoot%\system32;%SystemRoot%
setFILE_TO_PATCH=%QtSrcDir%\qtbase\mkspecs\win32-g++\qmake.conf
echo%FILE_TO_PATCH%
ifexist%FILE_TO_PATCH%.patchedgotoskipPatch
type%FILE_TO_PATCH%>%FILE_TO_PATCH%.patched
echo.>>%FILE_TO_PATCH%
echoQMAKE_LFLAGS+=-static-static-libgcc>>%FILE_TO_PATCH%
echoQMAKE_CFLAGS_RELEASE-=-O2>>%FILE_TO_PATCH%
echoQMAKE_CFLAGS_RELEASE+=-Os-momit-leaf-frame-pointer>>%FILE_TO_PATCH%
echoDEFINES+=QT_STATIC_BUILD>>%FILE_TO_PATCH%
:skipPatch
setQT_INSTALL_PREFIX=%QtStaticDir%
setOldDir=%CD%
cd%QtSrcDir%
cmd/C"configure.bat -shared %BuildType% -platform %QtSPEC% -prefix %QtPrefixDir% -opensource -confirm-license -c++std c++14 -nomake examples -skip wayland -skip purchasing -skip serialbus -skip qtserialport -skip script -skip scxml -skip speech -skip location -no-opengl -qt-zlib -qt-pcre -qt-libpng -no-libjpeg -qt-freetype -no-openssl"
ifERRORLEVEL1goto:error
mingw32-make-r-k-s-j4
ifERRORLEVEL1goto:error
mingw32-make-kinstall
ifERRORLEVEL1goto:error
setFILE_TO_PATCH=%QtPrefixDir%\mkspecs\win32-g++\qmake.conf
echo.>>%FILE_TO_PATCH%
echoCONFIG+=static>>%FILE_TO_PATCH%
echo============BUILT!============
gotoexitX
:error
echo============ERROR!============
:exitX
pause
cd%OldDir%
参考资料:
https://wohlsoft.ru/pgewiki/Building_Qt_on_MinGW-w64
https://bugreports.qt.io/browse/QTBUG-64298