Qt Static Build Is Very Big

Taz742

What can we do to make it smaller?

Eligijus

while running configure scipt pass -nomake examples -nomake tests parameters. It will save you about 60Gb of space.

Taz742

@Eligijus
Thanks for reply.
And how much reduction?

Taz742

@Eligijus
If my project is 50 megabytes in release mode of how much will it be?

Eligijus

@Taz742 I thought you were talking about static Qt build taking up a lot of space and not about application with statically linked Qt.
In this case What Qt modules do you use? What is your app size if you link Qt dynamically?
If i recall correctly my application with just core and gui modules took about 15Mb of space.

Taz742

@Eligijus
I use Qt 5.7
My project is the following: I need only .exe which reads .xml file, this xml is written in the file's address that should be downloaded and put in my specified location.
I have prepared everything but I do not want to use my program to duplicate .dll and other files. I need only .exe and be too small.

Taz742

@Eligijus
Unfortunately 15 megabytes is very big..
Can I make the Qt application size <= 5 mb?

VRonin

See http://blog.qt.io/blog/2017/05/31/qt-lite-qt-5-9-lts/

Taz742

@VRonin
Excuse me, I can not find ho to download it :D

VRonin

@Taz742 Given the level of customisation provided there is no way for Qt to deliver pre-compiled binaries. It's just a series of config options to use when building Qt from sources. use configure --list-features to see them all

Taz742

@VRonin
Unfortunately, there are many big for me.
I started writing my project Native c ++ (Dev-Cpp 5.11 TDM-GCC 4.9.2), but I can not write http downloader.
Can anyone help me?

VRonin

@Taz742 said in Qt Static Build Is Very Big:

Dev-Cpp 5.11

Oh god, please no! Use a proper IDE. Qt Creator is already there for you

@Taz742 said in Qt Static Build Is Very Big:

I can not write http downloader

You can use libcurl. it's in C but it's only 300KB

P.S.
You are probably going off topic here give this is a Qt forum

Taz742

@VRonin said in Qt Static Build Is Very Big:

Oh god, please no!

:D:D:D:D
When I started learning programming (Algorithm) Dev was my friend and I love it very much :)

@VRonin said in Qt Static Build Is Very Big:

Use a proper IDE. Qt Creator is already there for you

Yes there is Qt but in this particular case only .exe need and very small.

@VRonin said in Qt Static Build Is Very Big:

You can use libcurl. it's in C but it's only 300KB

And where to use Libcurl, tell me the language of programming where I use Libcurl and then I will only have .exe 300KB.
Please teach me :))

VRonin

I love it very much

I guess it's a bit like my love of escargot.

Yes there is Qt but in this particular case only .exe need and very small.

There is no relation between what IDE you use and the complied output

And where to use Libcurl, tell me the language of programming where I use Libcurl and then I will only have .exe 300KB

Almost all C++ compilers can compile and link to C code. Just follow the tutorial

mrjj

Just a note

Did you try
https://upx.github.io/

alt text

Its the charactermap sample static compiled. and then compressed.

Its fully transparent for the user and very fast decompressor.

VRonin

@mrjj That is sort of 7zip for .exes if the problem is space on the target device that will not solve very much as the program will be decompressed before it's started.

It works really well, however, if your problem is transferring the file around

mrjj

@VRonin

Well it decompresses to memory so unless its a size memory issue (on target), it should not matter.

But of course it wont be as lovely small as curl + pugixml :)

Taz742

@mrjj said in Qt Static Build Is Very Big:

https://upx.github.io/

It's vey hard for me.

mrjj

@Taz742

What is very hard ?

Taz742

@mrjj
UPX only decompresses .exe?
UPX can not just make it from my files only .exe ?