Lazy C++ - Chicken and Egg Problem - c++

Based on feedback I got from this question, I'm interested in using Lazy C++ on my OSX laptop. The Lazy C++ webpage has binaries for Linux and Windows available, but nothing for OSX. There's also a link to download for the Lazy C++ source, but it requires a lzz binary as part of the build process. This creates a situation where I need an lzz binary in order to get an lzz binary.
How can I build lzz on my laptop without an lzz binary? Do I need to do part of the build on a Linux or Windows machine to preprocess the lzz source files, and then transfer the source over to my laptop for building? Or is there something else that I should try?

Given that Lazy C++ appears to be a sort of a preprocessor - generating source files as output - you could probably compile it to completion on a supported platform like Windows, take all the generated files and compile it from these generated files again on OSX.
Depending on how complex the build system (Makefiles, in this case) of Lazy C++ is - this is going to be trivial, very complicated or anywhere in between...

Related

Moving away from DevC++ to command line compiling

I've inherited a large volume of C++ code for running & monitoring laboratory equipment. Currently the deployment is managed by compiling all of the individual modules (each it's own program) using DevC++, manually moving all the .exe files to a Dropbox folder, and then running them on the host machine manually.
I'm trying to automate this process somewhat to make rolling out an implementation on a new machine simpler and making sure the most up to date binaries are what is running on any given machine quickly. However, I don't know anything about deploying software in a Windows environment (I'm used to working on linux systems where a simple makefile would suffice) What tools (preferably command line) are available to compile & organize binaries in a portable way on windows systems?
Assume that you have a C++ compiler usable on the command line, on one translation unit. For example, GCC is such a compiler (and mingw is or contains a variant of GCC). Assume also that it is capable of linking (e.g. by driving the system linker).
Then you need to use some build automation tool to drive such compilation commands. For example GNU make or ninja (but there are many others). AFAIK they exist on Windows (so you could port your Makefile on Linux to Windows).
Once you have chosen your build automation tool, studied its documentation and understood how to use it, you'll write the relevant configuration file for it. For make, you'll write a Makefile (caveat : tab characters are significant). For ninja, you'll write some build.ninja files (but you'll probably generate it, perhaps with meson).
Notice that some build tools (e.g. cmake) are cross-platform.
BTW, DevC++ is an IDE, not a compiler.

How build harfbuzz without dependencies

I want build latest harfbuzz-ng library on Windows 7. But in build system by default I must go through long quest to gain: ragel, pkg-config, gtkdocize and other stuff. Even in the end if I get all what need for build system I get errors (sorry cannot say which concrete errors), last time I tried to build this library 2 month ago). Maybe on Linux system it is easy to get and build all this stuff but on Windows always something doesn't want to be compiled. Or the problem is that I don't find instructions which guide me on Windows, only Linux.
What I want to get is simple instructions how build only harfbuzz-ng with freetype dependency (and maybe add ICU) by MinGW compiler on Windows.
Thanks you very much.
For anyone reading this, have a look at harfbuzz.cc in the project which makes you able to use harfbuzz without any build system, just include it in one of your sources, no build system is required, define HB_NO_MT or even HB_TINY (which brings a minimal harfbuzz) if you don't use harfbuzz in multithread mode.
I don't know i this is the answer you are looking for. I am trying to work with Harfbuzz as well and did this through several attempts which did not work out for various reasons.
One (old) example you could use as a starter is: HarfBuzz static lib. The .lib-file generated works with UCDN and just needs this file plus a source for the Freetype-functions to provide the necessary FT_Face-parameter (i did this by compiling another .lib via the freetype-sourcecode (freetype.org/download.html).
But I am unsure if this will work out for the MinGW-compiler (you don't use VC++ as IDE do you??).
You may find of interest the MSYS2 build system. It is essentially a linux-style packaging system built on top of Windows(TM). You can download and install binary packages with simple commands (including automatic dependency solving). If you want to download a source package you can do that as well. http://msys2.github.io

C/C++ Windows+Linux ZIP Library for only unpacking?

Continuation of:
Standalone Cross Platform (Windows/Linux)) File Compression for C/C++?
After many attempts on ZLIB ZZLIB LIBZIP MINIZIP I always get many problems at the compilation stage. Many google searches turned out OS-specific libraries and I can't really find anything that fit my 'simple' needs.
I reduced my needs for the library (Or wrapper?) to this:
Works on both Windows and Linux OR 2 separate libraries; one which works on Windows and the other one on Linux, I can make 2 separate projects for Windows and Linux if it is really neccesary
Unpack file from zip to specified directory
Check if file exists in zip file
C OR C++ OR Mixed (yeah, that doesn't matter)
Preferably Very Simple to include into any project
(eg 5 c/cpp files and 1-3 header files? anyway not tons files, when I open all the libzip and zlib archives I have something like: "O my ..")
I've checked many stackoveflow threads too with the words "Windows Linux ZIP C C++" but all the results seem so have libraries which I OR don't know how to compile OR is too difficult to use OR it has too many 'needed stuff' for just simple zip extract and check if file exists.
I had put that project away for a later date and begun it now, and all those compilation errors came up (especially that VC++2010 doesn't have the C-99 inttypes.h)
I have had very good experience with Zipstream C++ library which gives you a nice OOP way of handling zip files.
If your project already uses some of the bigger libs like Boost , then you could try to use the boost::iostreams with the gzip filter, however the functionality is somehow limited.
Or if you happen to use Poco take a look at they're implementation Poco::Zip

Setting up midiIO library on Windows

I've downloaded the midiIO library and in the readme it says:
edit the file Makefile.library and set the OSTYPE and OSSUBTYPE to match your hardware/os setup.
type "make library" to compile the library. It will be created as lib/libmidiio.a in unix.
edit the file Makefile.examples and set the OSTYPE and OSSUBTYPE to match your hardware/os setup.
Also, if you are using ALSA, then uncomment out the POSTFLAG to use the alsa library (-lasound).
type "make examples" to compile the example programs in the examples directory. The example programs will be place in the bin directory.
1 + 3 are fine but 2 + 4 are over my head. I've worked in a unix environment before and have used gcc with flags but I need to get this done in Windows. I typically use Visual Studio but don't know how to achieve this with that.. I've downloaded Dev-C++ if that's any use but I don't know what to do with the makefiles?
Ignore the makefiles and set up a fresh project in Visual C++. Make your target a static library (which will be a .lib file in Win32, not a .a file as in unix as you probably know). It is unlikely that the project will build out of the box, so you might have to deal with some compilation errors relating to unix-specific symbols. I took a quick look at the source code, and it looks fairly well-written, so I don't think you should have many problems building it directly in Windows.
Alternately, you could build the source using the real make tool in cygwin, but this means that you would need to distribute the cygwin library with your final product. This may or may not be more trouble than it's worth, especially if you are already using VC++ for the rest of your project's code.

How do I compile my own C++ library for Android?

I have written and tested a library in C++. The code even works in my Android application if I add the source files directly. While I do have experience compiling static and dynamic libraries for common operating systems, I have zero experience compiling for a mobile system like this. I've done some research, and I'm still a bit lost as to exactly how to approach this. For example, I am unsure of whether to build a makefile for use with ndk-build or to just invoke one of the Android's compilers directly.
I did see this question, but it does not quite match my situation. I just want to run build and have it spit out libfoo.a (I'd like to produce libfoo.so as well, but libfoo.a is of greater interest to me right now.) The example in that question's winning answer implied that it would build the library as one step/module for building the final application. I tried doing it that way just to see, but I had no luck.
Can anyone please guide me in this endeavor?
CLARIFICATION -- I do not want to build the library and immediately pipe it into an application. I want a .a or .so file that I can link against in multiple future Android applications.
Create a dummy java file with empty code and make sure there is a android_main function in your C++ code. Build using ndk-build. the resulting apk will make your library an application.
See the samples from the android-ndk-r5/samples directory, see the sample native-bitmap to get some idea.
If I understand it correctly that a shared library is not acceptable and you want to be static (but why is that so important?), probably the easiest way to do so is to simply supply source code that can be added to a project.
Ultimately there is nothing special about the ndk build system other than it knowing the right commands to issue to build the necessary files for the assortment of curent android architectures. If you really want to do something different, you can log the operation of the android build system in creating a shared library, and then write your own Makefile that performs the analogous steps to create a static library. HOWEVER, you will have to update your Makefile any time the underlying assumptions or target collections change in a new android version.