解决 Qt 应用程序大小的方法
带有网络库和 GUI 库的 Qt 应用程序大约有 10MB；也就是说，没有代码。
对于像我这样有互联网连接的人来说，这有点不方便；特别是当涉及到很少使用的程序时（即使用过一次然后就离开了）。
我尝试使用LZMA和LZMA2压缩来压缩exe文件，但它什么也没做。
我想让代码本身更小，有什么办法吗？我可以缩小多少尺寸？至少在网络库方面是这样。
PS：我不想使用UPX或此类应用程序。
A Qt app with the networking library and the GUI library gets to about 10MB; that is, without code.
For people with Internet connection like mine, that is a bit inconvenient; specially when it comes to a program that is rarely used (i.e. used once and then left.)
I tried to use LZMA and LZMA2 compressions to compress the exe files, and it did nothing.
I would like to make the code itself smaller, is there a way to do that? How much can I go down in size? At least when it comes to the networking library.
PS: I wouldn't like to use UPX or such applications.
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您可以尝试静态链接；这也许能够从库中丢弃未使用的代码。但请注意，这可能会影响您在 Qt 开源许可证下的义务；分发静态链接到 LGPL 许可库的闭源（通常是非 LGPL）应用程序会带来 与动态链接情况相比的额外义务。当然，如果您的应用程序本身是 GPL 或 LGPL 许可的，那么这没有问题。
You could try statically linking; this may be able to discard unused code from the library. Please note, however, that this may impact your obligations under Qt's open source licenses; distributing a closed-source (generally, non-LGPL) application statically linked against a LGPL-licensed library brings with it additional obligations when compared to the dynamic-linking case. Of course, if your application is GPL or LGPL licensed itself, this is no problem.
您可以从源代码重建 Qt，跳过不需要的部分。请参阅配置选项，了解可以省略的事项列表。例如
-no-openssl将使网络库更小。You could rebuild Qt from source, skipping the bits that you don't need. See configure options for a list of things that you can leave out. E.g.
-no-opensslwill make the network library smaller.这是我写的一份缩小 Qt 的指南：
http ://www.formortals.com/build-qt-static-small-microsoft-intel-gcc-compiler/
Here is a guide I wrote to making Qt smaller:
http://www.formortals.com/build-qt-static-small-microsoft-intel-gcc-compiler/