qmake工具生成项目文件与Makefile文件

news/2024/7/7 15:39:21

qmake

是一个协助简化跨平台进行专案开发的构建过程的工具程式，也是Qt附带工具之一。可以根据项目环境构建.pro项目文件，再根据项目文件生成Makefile文件。相对于手写一个项目Makefile来说，使用qmake生成Makefile比较简便。

查看qmake

Ubuntu下已经安装好Qt

qmake -v

可能会出现错误

qmake: could not exec ‘/usr/lib/x86_64-linux-gnu/qt4/bin/qmake’: No such file or directory

是因为在/usr/lib/x86_64-linux-gnu/qt4/bin/qmake这个目录下没有qmake程式文件。
找到路径：/usr/lib/x86_64-linux-gnu/qt-default/qtchooser

vim default.conf

将第一行：/usr/lib/x86_64-linux-gnu/qt4/bin/qmake改成自己Qt安装的路径/opt/Qt5.5.0/5.5/gcc_64/bin
再执行

qmake -v

可以看到qt版本。

查看qmake帮助文档

qmake - h

Usage: /opt/Qt5.5.0/5.5/gcc_64/bin/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 *; *; *; *.ts; *.xlf; *.qrc
                 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语法

qmake [mode] [options] [files]

模式有两种：
-project：根据工程生成.pro项目文件。
-makefile：根据.pro项目文件生成makefile文件。

qmake生成makefile文件简单测试

创建一个test工程目录，目录下有三个目录分别是：a,b,m；a目录下有a.c,a.h；b目录下有b.c,b.h;m目录下有main.c。
在这里插入图片描述

a.c

#include <stdio.h>
#include "a.h"
int a(void)
{
        printf("call a!\n");
        return 0;
}

a.h

#ifndef _A_H
#define _A_H
int a(void);
#endif

b.c

#include <stdio.h>
#include "b.h"

int b(void)
{
        printf("call b!\n");
        return 0;
}

b.h

#ifndef _B_H
#define _B_H
int b(void);
#endif

main.c

#include <stdio.h>
#include "../a/a.h"
#include "../b/b.h"
int main(int argc, char ** argv)
{
        if(argc > 1){
                printf("%s\n",argv[1]);
        }
        printf("hello, linux world!\n");
        a();
        b();
        return 0;
}