Qt程式設計中qmake的使用詳解
阿新 • • 發佈：2020-08-05
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Qt程式設計中qmake的使用詳解
首先說一下qt程式設計的步驟，然後再仔細說一下qmake的使用。我看書上的都是編寫好cpp檔案後，分別執行命令: qmake -project、qmake、make，然後執行就可以了，但是要是我在一個資料夾下有多個cpp檔案，qmake怎麼識別？make生成的最後執行檔案的名，我怎麼能隨心所欲的自己定？帶著疑問，找了網上的資料，不如所衣，然後嘗試著gcc編譯的思想竟然撞到了。 其實我感覺要要真正瞭解qmake的使用方法，直接在終端下輸入命令：qmake -help就可以了，我也是這樣做的，幫助內容如下 [plain]view plain
Usage: qmake [mode] [options] [files]
QMake has two modes, one mode for generating project files based on
some heuristics, and the other for generating makefiles. Normally you
shouldn't need to specify a mode, as makefile generation is the default
mode for qmake, but you may use this to test qmake on an existing project
Mode:
-project Put qmake into project file generation mode
In this mode qmake interprets files as files to
be built,
defaults to *.c; *.ui; *.y; *.l; *.ts; *.xlf; *.qrc; *.h; *.hpp; *.hh; *.hxx; *.H; *.cpp; *.cc; *.cxx; *.C
Note: The created .pro file probably will
need to be edited. For example add the QT variable to
specify what modules are required.
-makefile Put qmake into makefile generation mode (default)
In this mode qmake interprets files as project files to
be processed, if skipped qmake will try to find a project
file in your current working directory
Warnings Options:
-Wnone Turn off all warnings; specific ones may be re-enabled by
later -W options
-Wall Turn on all warnings
-Wparser Turn on parser warnings
-Wlogic Turn on logic warnings (on by default)
-Wdeprecated Turn on deprecation warnings (on by default)
Options:
* You can place any variable assignment in options and it will be *
* processed as if it was in [files]. These assignments will be parsed *
* before [files]. *
-o file Write output to file
-d Increase debug level
-t templ Overrides TEMPLATE as templ
-tp prefix Overrides TEMPLATE so that prefix is prefixed into the value
-help This help
-v Version information
-after All variable assignments after this will be
parsed after [files]
-norecursive Don't do a recursive search
-recursive Do a recursive search
-set <prop> <value> Set persistent property
-unset <prop> Unset persistent property
-query <prop> Query persistent property. Show all if <prop> is empty.
-cache file Use file as cache [makefile mode only]
-spec spec Use spec as QMAKESPEC [makefile mode only]
-nocache Don't use a cache file [makefile mode only]
-nodepend Don't generate dependencies [makefile mode only]
-nomoc Don't generate moc targets [makefile mode only]
-nopwd Don't look for files in pwd [project mode only]
song@ubuntu:~/lianxi/qt$ clear
song@ubuntu:~/lianxi/qt$ qmake -help
Usage: qmake [mode] [options] [files]
QMake has two modes, one mode for generating project files based on
some heuristics, and the other for generating makefiles. Normally you
shouldn't need to specify a mode, as makefile generation is the default
mode for qmake, but you may use this to test qmake on an existing project
Mode:
-project Put qmake into project file generation mode
In this mode qmake interprets files as files to
be built,
defaults to *.c; *.ui; *.y; *.l; *.ts; *.xlf; *.qrc; *.h; *.hpp; *.hh; *.hxx; *.H; *.cpp; *.cc; *.cxx; *.C
Note: The created .pro file probably will
need to be edited. For example add the QT variable to
specify what modules are required.
-makefile Put qmake into makefile generation mode (default)
In this mode qmake interprets files as project files to
be processed, if skipped qmake will try to find a project
file in your current working directory
Warnings Options:
-Wnone Turn off all warnings; specific ones may be re-enabled by
later -W options
-Wall Turn on all warnings
-Wparser Turn on parser warnings
-Wlogic Turn on logic warnings (on by default)
-Wdeprecated Turn on deprecation warnings (on by default)
Options:
* You can place any variable assignment in options and it will be *
* processed as if it was in [files]. These assignments will be parsed *
* before [files]. *
-o file Write output to file
-d Increase debug level
-t templ Overrides TEMPLATE as templ
-tp prefix Overrides TEMPLATE so that prefix is prefixed into the value
-help This help
-v Version information
-after All variable assignments after this will be
parsed after [files]
-norecursive Don't do a recursive search
-recursive Do a recursive search
-set <prop> <value> Set persistent property
-unset <prop> Unset persistent property
-query <prop> Query persistent property. Show all if <prop> is empty.
-cache file Use file as cache [makefile mode only]
-spec spec Use spec as QMAKESPEC [makefile mode only]
-nocache Don't use a cache file [makefile mode only]
-nodepend Don't generate dependencies [makefile mode only]
-nomoc Don't generate moc targets [makefile mode only]
-nopwd Don't look for files in pwd [project mode only]
qmake命令格式 qmake [mode] [options] [files] mode選項 -project 生成.pro檔案 -makefile 生成Makefile檔案 options選項(這裡介紹幾個常用的，其它的自己去翻譯上面,其實我也是剛學，用到的時候再學習哈) -o file 輸出檔名，比如qmake -project hello.cpp -o hello.pro，就會生成一個hello.pro檔案，如果是qmake -project hello.cpp -o hello11.pro，就會生成一個hello11.pro檔案 實驗1 1、編寫程式碼，命名為hello.cpp，如下 hello.cpp程式碼如下 [cpp]view plaincopyprint?
#include<qapplication.h>
#include<qpushbutton.h>
int main(int argc,char *argv[])
{
QApplication a(argc,argv);
QPushButton hellobtn("Hello World!",0);
hellobtn.resize(200,50);
hellobtn.show();
return a.exec();
}
2、qmake -project(用於建立.pro檔案，將所有的檔案編譯成一個與平臺無關的工程檔案) 可見預設生成的檔名為 qt.pro 3、qmake(讀取本身的Qt設定，生成與庫一致的相應的Makefile) 4、make(根據生成的Makefile，將檔案編譯為二進位制可執行程式) 可見生成了qt可執行程式 5、執行命令：./qt 實驗2 本實驗中並沒有用到上面所講的方式，而是直接使用了預設值，但是假設說該資料夾下有兩個cpp檔案，如下圖 這時候再執行命令：qmake -project會怎麼樣呢？會出現下面的結果 有點意思，竟然不出錯，但是你知道它生成的qt.pro是哪個cpp檔案的嗎？我不知道，加入這裡我想對test.cpp操作，這時候就要按照上面的格式了。 1、qmake -project test.cpp -o test.pro 這時候生成了test.pro 2、qmake -makefile test.pro，這裡生成test.pro的Makefile 3、make 4、執行命令 ./test |