Gcc compile multiple files 

Support all ISO C89 programs. Using the Java Langage Compiler (javac) to compile . The ``overall options'' allow you to stop this process at an intermediate. See the downloaded package Release Notes, which are linked from thisc_cpp_properties. Pre-compiled headers can speed up the total compilation times. exe ) to perform the linking. GCC, the GNU Compiler Collection, is used to build your C++ executables. Run thedownloaded installer and accept the default options to install GCC Object files. Using pip. They look like: #include // (1) #include "file. h. Feb 28, 2011 · Compiling multiple files Actually i am trying to compile two . cc - gcc compile multiple files - Stack Overflow. a is a static library. If you are developing exclusively for Windows, that is the tool I would recommend. This includes the executable programs that do actual compiling, and some version-specific libraries and include files. c). C file2. GCC - MinGW-w64 (x86, x64) MinGW-w64 is an alternative C/C++ compiler that works with all Python versions up to 3. c; Link the two object files together ; gcc green. Compile and Link Multiple Source Files. c d. Apr 17, 2020 · In this tutorial we will install multiple versions of GCC and G++ compilers using the apt install command. c You'll be good to go. c source2. out on Unix-like systems. As we can see, the command for linking is almost the same as the one Recently, we have had several customers who decided to compile our C++ library under Linux. com Aug 19, 2020 · # Simply compile with GCC $ gcc helloworld. main. h file; Compile multiple C language files into one project, variable declaration and use of . gcc -L looks in directory for library files. o 3 -rw-r--r-- 1 13042 users 2312 Mar 13 13:40 green. c path/to/mylib. cpp xyz. This is where the compiler actually integrates the code in neuron. As source becomes larger divide it into multiple files; Compile each source file: gcc -c green. Jan 29, 2022 · 2. h files with the -I option and for lib files (. Jun 10, 2020 · After adding the repository above, you can then install multiple GGC versions using their version number. 0. S) files -- supports the given option. Furthermore, by use of the update-alternatives tool you will learn how to easily switch between multiple GCC and G++ compiler versions and how to check the currently selected compiler version. Customize run options. o files together without the -c to link them together and produce an executable: Jan 23, 2022 · Step 2) Select the installer with GCC for Windows compiler. I was wondering if anyone knows of a java compiler online that supports multiple files. ? Are you building any innovative solution for your students or recruitment?I used to have a shell script that would compile all of the FILE. c . That said, the GCC 8 release series is end of life for half a year now and this port should be removed rather sooner than later in favor of lang/gcc10 or later. (In the example above it will be filename1. aChoose the installer with GCC Compiler, e. /contrib/download_prerequisites Feb 15, 2021 · The GNU Compiler Collection is an advanced piece of software with dependencies. Normally, you would compile this collection of code by executing the following command: gcc -o Splitting your program into multiple files On line 1 (commented out) I show the gcc command to compile this program, and you can see that we simple add Multiple Source Files: If your program consists of several source files, you would need to compile each of them into an object file and then link the resulting GCC uses a separate linker program (called ld. The compiler may have been built with multiple libraries for several architectures (multilib). Trouble shooting compilation errors. 6. Compiling multiple C files with gcc. Jan 20, 2022 · Step 3: Compile/Build. GCC for 32-bit and 64-bit Windows with a real installer & updater. This is all perfectly normal behavior, you'll usually get your makefile to compile things separately and link them at the end, so you don't have to recompile every singleThe most basic project is an executable built from source code files. This command will result in a new file being created. h file; 2019. So is every second spent waiting for the build system to actually start compiling code. C files and one . In order to use newlib nano, we add the spec file to our GCC compile multiple files; linux GCC compile multiple . C language object files created with the compiler are binary compatible with the GCC and C/C++ language library. i. c as the simplest possible compiling command. The Fortran compiler is described in a separate manual. Dec 26, 2014 · gcc does the instrumentation and provides the library for code coverage, while gcov is the utility to analyze the generated data. GCC can compile programs written in C, C++, Objective C, or Fortran. Here we will see how to compile multiple cpp file in C++ program. c", you can compile them together, or you can do it in intermediate steps by creating first the object files ". c kodunu kullan. exe file includes additionally the GCC/G/GFortran compiler and GDB debugger from MinGW-W64 project (version 8. so # # In order to create a shared library, position independent code # must be generated. Use the ls command to list your directory. 0-3ubuntu1~18. Forum. s file · 1. GCC is capable of preprocessing and compiling several files either into several assembler input files, or into one assembler input file; then each assembler input file produces an object file, and linking combines all the object files (those newly compiled, and those specified as input) into an executable file. gcc -lgg -L. c, code2. A program can be split up into multiple files. Get a GNU GCC toolchain that compiles to a linux executable while running on windows. com/jacobsorberCourses https://jacobsorber. Many open-source projects including the GNU tools and the Linux kernel are compiled with GCC. txt and the . o object files) with the "ar" command. 03 (mingw)-nosetup. Syntax to compile multiple files at once using GCC gcc -o Syntax to run a C program Example to compile and run above program. c files into . 1) Here, the default Ubuntu repositories have a meta-package as build-essential. NOTE: The codeblocks-20. To compile the source code into Assembler instructions: $ gcc -S source. gcc -o executable sourcefile. If multiple files are found an ambiguity error is produced. Code: Mar 30, 2019 · If you have multiple source files you can compile by. You need the following in order to build GCC: A Unix-like environment (Windows users can use the Windows Subsystem for Linux or Cygwin) Enough memory and hard disk space (it depends, 256 MiB will not be enough). cpp', or select the 'Run' menu) ⇒ Run As ⇒ Local C/C++ Application ⇒ (If ask, choose Cygwin's gdb debugger) ⇒ The output 'Hello, world GNU Compiler Collection. cpp, file2. To allow warnings, debug symbols in the output: $ gcc source. , codeblocks-17. Jan 30, 2022 · java compiler not installed on this system codeblocks. The solution to this would be to split the source code into multiple files, each containing a set of closely-related functions (or, in C++, all the source code for a single class). What most people mean by the phrase "compiling a program" is actually two separate steps in Introduction to gcc compiling multiple source files Multi-file compilation in the same directory. In this article we will explore some of the best and worst compiler flags for GCC (and Clang). When -o flag is used it links object code to create the executable file from file_name. c -lm I get this error multiple times /tmp/cc5TzMPo. We need to inform VS of what type of C++ code this is, so go the Project menu and select Edit Settings Jan 23, 2022 · Step 2) Select the installer with GCC for Windows compiler. c sourcefile_n. cpp', or select the 'Run' menu) ⇒ Run As ⇒ Local C/C++ Application ⇒ (If ask, choose Cygwin's gdb debugger) ⇒ The output 'Hello, world Jan 31, 2022 · Gnu Gcc Compiler Download Windows 10 64 Bit. Asked 4 Months ago Answers: 5 Viewed 82 times. Mar 25, 2013 · Compile your code with gcc -o program yourcode. Allow warnings, debug symbols in output. SO) file using gcc/ g++. 0 C/C++ Extension Version: latest Hello, i know that his is something vscode / tasks,json related but is there a way / setting to compile multiple source and header files with To compile it, go to a Unix Shell window, connect to the directory into which you downloaded the program, and enter the following command: gcc -Wall -g -c hello. C -o myprog Syntax to compile multiple files at once using GCC gcc -o Syntax to run a C program Example to compile and run above program. For an explanation of the difference between the Apr 19, 2015 · Hi I’m trying to write my own code and I need to write some functione to different . cpp files in c++ program - Here we will see how to compile multiple cpp file in C++ program. 1, or GCC 5. c c. You can link multiple objects together to produce an executable. cpp', or select the 'Run' menu) ⇒ Run As ⇒ Local C/C++ Application ⇒ (If ask, choose Cygwin's gdb debugger) ⇒ The output 'Hello, world Using the GNU Compiler Collection by Richard M. 1, you would probably encounter ABI issues. c file2. You appear to have multiple copies of cilk. Compiling for Multiple CPU Architectures. … In the next step, we can run the program. The GNU project is an free-software and mass-collaboration project launched by Richard Stallman in 1983 In this case, GCC will create default output executable a. 6_08 Beta supports system UI scaling on Windows and Linux (automatically integer-rounded). Click on the green buttons that describe your host platform. C -o myprog Patreon https://www. c file aren't simply the . If compilation is successful, the LLVM utilities should be able to assembleGCC (originally called the GNU C Compiler, and now called the GNU Compiler Collection) was initially released in 1987, but it was far from the first C compiler available. In the following tutorial, you will learn how to install GCC on Ubuntu Download Gnu Gcc Compiler Code Blocks Mac Free; Compiler converts the code into machine code so that CPU can understand the code and perform task according to the instructions written in code. An optional second option may be specified if the first option is not supported. This file is unique to the current step and is a different file for each step in a job. o object files, and then linking together. c] [source2. 04LTS Xenial - Install_gcc7_ubuntu_16. c myprog2. cpp', or select the 'Run' menu) ⇒ Run As ⇒ Local C/C++ Application ⇒ (If ask, choose Cygwin's gdb debugger) ⇒ The output 'Hello, world This set of Linux / Unix questions and answers focuses on various stages of compilation for gcc compiler. / -o test main. Shortcut to compile-run [ default: f6 ]. The -c option means to compile the source code file into an object file but not to invoke the linker. c:(. 03mingw-setup. What next? Save your progress! If you want to come back to this project later, you can create a Raspberry Pi account to save your progress so far. The checksums for the installer and patches can be found in . obj) It specifies that GNU MAKEFILE will clear all LOCAL_XXX variables except LOCAL_PATH for you, such as LOCAL_MODULE, LOCAL_SRC_FILES, LOCAL_SHARED_LIBRARIES, When asked to compile a source file, GHC normally generates two files: an object file, GCC and other programs will honour the TMPDIR variable as well. c file but instead of giving default Jun 28, 2020 · The A. where the -c flag tells the compiler to stop after the compilation phase, without linking. Once the file is extracted, a new folder named gcc-9. 3 and it is installed in the /usr/bin/gcc-6. The RISC-V GCC compiler can generate code for all (supported) extensions and ABIs, a separate compiler binary is not needed for each base ISA. Full C preprocessing transforms the file into a C++ translation unit as seen by the compiler. Oct 23, 2017 · In the Export program dialog choose GCC (ARM Embedded) for the Export Target. The current official mean-ing is "GNU Compiler Collection", which refers generically to the complete suite of tools. o) and libraries. • Disadvantages:. c hellofunc. Using the OpenCL API, developers can launch compute kernels written using a limited subset of the C programming language on a GPU. In compilation, gcc only requires header files ( . The ultimate output is in the form of an object file for eachCompiling multiple C files with gcc - Stack Overflow. If you’re looking for how to compile your programs before submitting, check the compiling homework section below. Compiler. c files into corresponding object files. h, and X. c' then 'avr-gcc -g -mmcu=atmega328p -o serial. 4. You need to use g++ to compile C++ program, as follows. I just wat to ask if there is a chance to specify the output destination of foo. Sep 21, 2012 · To use your processor's vector hardware, tell the compiler to use intrinsics to generate SIMD code, include the file that defines the vector types, and use a vector type to put your data into vector form. These are the output of the compiler/assembler. h files) to ensure that external function calls have correct parameters matched with the definition. , John Love-Jensen Jan 29, 2022 · 2. c -o main. cpp', or select the 'Run' menu) ⇒ Run As ⇒ Local C/C++ Application ⇒ (If ask, choose Cygwin's gdb debugger) ⇒ The output 'Hello, world Apr 17, 2020 · In this tutorial we will install multiple versions of GCC and G++ compilers using the apt install command. For example, common binary names for the GCC compiler include c++, gcc and g++. It is usually very simple to compile a program that has been divided across multiple source files. Compiling multiple files (Opt 1) • gcc -Wall main. out". The -c option is useful for efficiently making projects that have multiple source code files. This guide provides an introduction to optimizing compiled code using safe, sane CFLAGS and CXXFLAGS. I can call ocamlc one final time when I have all the . The above command executes the complete compilation process and outputs an executable with name a. NET and C++ developers on Windows. This makes it easier to edit and understand, especially in the case of large programs--it also allows the Compiling multiple files. Jan 27, 2018 · A shared library is created with GCC's -shared flag and naming the resultant file with the suffix . From the main menu, choose Terminal > Configure DefaultDownload TDM-GCC Compiler for free. cpp', or select the 'Run' menu) ⇒ Run As ⇒ Local C/C++ Application ⇒ (If ask, choose Cygwin's gdb debugger) ⇒ The output 'Hello, world Aug 23, 2019 · There are multiple kinds of binary / object / executable code files. When working with multiple files the question of how to include properly files always comes up. Here's a Jan 23, 2022 · Step 2) Select the installer with GCC for Windows compiler. o; andes:~rcomp1/softdev> gcc -c green. To Execute a C program, we need to follow three steps. Nov 21, 2021 · Example: This will compile the source. May 15, 2020 · clang / gcc OS and Version: Ubuntu 20. cc B. 95x to 1. c; gcc -c blue. codepad. 2) Firstly, start by updating the packages list: sudo apt update. o andes:~rcomp1/softdev> file green. gcc -g -o ProgramName file1. c files in a directory to FILE. c -o hw # Compile multiple files $ gcc helloworld1. c stack. " github. 1MSYS package manager. CPP C preprocessor. For example, if the currently supported gcc compiler is version 6. 1, or libstdc++. Create a list based on a spreadsheet. This is both the most general name for the compiler, and the name used when the emphasis is on compiling C programs (as the abbreviation formerly stood for Jan 20, 2022 · Step 3: Compile/Build. c (you can add more …) and you will have an object file for each of your source file. Copy. The most recent stable releases from the GCC compiler project, for 32-bit and 64-bit Windows, cleverly Upload screenshot of ad (required): Select a file , or drag & drop file here. In the File Explorer title bar, select the New File button and This task will invoke the g++ compiler to create an executable file based on the source code. The RISC-V cross-compiler supports two build modes: a generic ELF/Newlib toolchain and a more sophisticated Linux-ELF/glibc toolchain. Offer Details: There is no need for -c flag [NOTE] when you're specifying the output binary using -o Command to Compile Multiple Files in GCC? Toolbox Tech. gcc -o executable sourcefile_1. I lost it and am trying to remake it and have the following which I know is very similar but can't tell where I am going To make the script run you'd comment out the echo line above, and uncomment the gcc line. Features. c -o two. c files) into object files (. Dec 03, 2021 · Step 2) Select the installer with GCC for Windows compiler. You'll be good to go. Learn vocabulary, terms and more with flashcards, games and other study tools. Warnings : -Wall turns on most warnings. c file, Make uses an inference rule to infer that dependency. Compiling and Running C Programs with GCC: The command to compile a C source file with GCC is: $ gcc - o OUTPUT_BINARYSOURCE_FILES. If the -o option is omitted, the compiler creates a file named after the source file with the . GCC-XML parses a C++ source file as it is seen by the compiler when it is built. C main Aug 21, 2020 · Depending upon the source file it also has the logic to potentially serial compile the file if it deems a parallelized compile ineffective. 04 LTS. exe which includes MinGW's GNU GCC compiler download and GNU GDB debugger with Code::Blocks source files. Follow the links on this page to download the correct version for your development environment. c src_print2. Mar 05, 2020 · Run the downloaded installer. To generate the *. It means the program is compiled. Step 4: Run. To run the program, right-click on the 'FirstProject' (or anywhere on the source 'test. cpp This produces an object file named file. Also, as mentioned here, all the files are in same directory, you can even shorten the statement as. • gcc –Wall main. So, I'm trying to building a Flow that takes the responses from a Form I've created and sends me an email with all of the responses in the body of the email. Compiles multiple files using handlebars. c # Compile into an executable file named hw $ gcc helloworld. /a. FAQ. c sourcefile_2. Note that this is an optimization switch, not a portability switch. h' is not specified in the list of files on the command line. c test2. c compiles three files and Simple makefile for compiling a program from # two C source files. Threads/ Processes are the mechanism by which you can run multiple code segments at a time, threads appear To compile C program with pthread. In most cases, the same file is getting compiled multiple times over and over again. 2021/12/02 I have multiple C# sources files (around 50) in a directory. man gcc for more options. Oct 30, 2012 · GCC Compiler Options 1. For example, Codertocat/Hello-World. Compile and Link Multiple Source Files. In Microsoft Teams, from the Files tab at the top of your channel, select More > Open in SharePoint , and then select New > List. Because the Macintosh platform includes more than one processor family, it is often important to compile software for multiple processor architectures. To install the gcc and g++ compilers, you will need the build-essential package. h, and implementation files 2007/03/19 As source becomes larger divide it into multiple files; Compile each source file: gcc -c green. so extensions. you can run your programs on the fly online and you can save and share them with others. Most Useful Options with Examples: Here source. . o and filename2. codepad is an online compiler/interpreter, and a simple collaboration tool. gcc source. 2008/10/22 Compiling multiple files in parallel would decrease compilation time up to 2 I use MinGW/gcc with 5 compile processes on a quadcore, 2021/07/06 Compilation; Assembly; Linking. For example, the following command will compile the source file 'main. From the Lists app in Microsoft 365, select +New list or from your site's home page, select + New > List . cSet the appropriate CMAKE_FOO_COMPILER variable(s) to a valid compiler name or full path in a list file using set(). -o filename Specifies the name of the output file. You could compile all of them in a single command: > g++ -o(CC) is usually the gcc compiler, but other alternatives are available. c b. c file but instead of giving default Patreon https://www. so) with -L. Say you have code1. This will cause the compiler to generate a . To compile multiple programs at once with multiple source code files, use gcc -c file1. Suppose that your program has two source Separate Compilation of Multi-File Programs. Specify the Output Executable Name. Compiling multiple . The GNU project is an free-software and mass-collaboration project launched by Richard Stallman in 1983 Dec 27, 2020 · Compile and link multiple files: When -c flag is used, it invokes the compiler stage which translates source code to object code. make Compiling multiple files. o bin/shared/answer. NVIDIA is now OpenCL 3. You can compile and run c++ without IDE with these commands. source1 and source2) into executable, run: $ gcc source1. Make sure you both zip archives in the same directory! If you want to compile the OS/2 version, you need the EMX compiler. Run thedownloaded installer and accept the default options to install GCC Sep 21, 2012 · To use your processor's vector hardware, tell the compiler to use intrinsics to generate SIMD code, include the file that defines the vector types, and use a vector type to put your data into vector form. Instead of compiling A. c is the C program code file. [root@host ~]# cpp helloworld. The linking stage simply is not done. c > helloworld. multiplatform support for Linux, macOS, Windows, GCC, Clang, Visual Studio and others As an example, compiling C source (. Details: If you have your two source files, you can compile them into object files without Details: How to compile multiple files on linux with GCC. To test your program open If you have multiple source files you can compile by. -o test test. "GCC" is a common shorthand term for the GNU Compiler Collection. If you have questions about what you are doing or seeing, then you should consult INSTALL since it contains the commands and specifies the behavior by the development team. If you get an "internal compiler error (ICE)" or test failures, see below. Open file using, 2. Feb 01, 2022 · Gnu Gcc Compiler For Mac Compiling and executing a program on C is very simple using XCode on Mac. Looking for Multiple Files, Connecting to DB, Debugging, etc. How To Convert 2 Png Files Into A Pdf Can Vlc Open Heic Files clang / gcc OS and Version: Ubuntu 20. A wide range of choices for you to choose from. Next time, I will know how to deal with this kind of issues. GCC can compile programs written in any of these languages. cmo files to link them to an executable. The reverse is very simple, just compile it into executable normally, then use objdump to g is the GNU C compiler. Press i to go to insert mode. or. cc We could could require "well-behaved Find the formats you're looking for Gcc Compile Multiple C Files here. Compile and Run Program. Aug 20, 2019 · Libc selection in GCC is implemented with specs files. obj. Write your first program on bash. This can be achieved with `-fPIC` flag when # c-files are compiled. h header_print2. The release notes contains a list of compatible versions. If not you need to download a gcc compiler and install it. I want to compile all these templates into a single file so that I can load it using requireJS. Copy snippet. For example, if you were building a simple database program called mydb , the command Re: compiling and linking multiple files using gcc. The combination of these results in a free C/C++ compiler for Windows. The code can be used during the compilation of code and running executable by linking the . Use a text editor such as nano or vi to create a C program called hello. o; andesWhen you invoke GCC, it normally does preprocessing, compilation, assembly and linking. I would like the last command doing Is it possible to insert compile module after compiled "make" without installing. The Open MPI wrapper compilers are driven by text files that contain, among other things, the flags that are passed to the underlying compiler. C C program Source files. Command to Compile Multiple Files in GCC? Toolbox Tech. As far as I understand, I can use ocamlc -c to perform compilation only. The first is to use a single command line to compile all the files. c++. Even more so with C++11, it may take some time for it to compile on your machine. From ArchWiki. c files with gcc in unix and i also have one . gcno files, the following option has to be added for each file which should generate coverage information: As an example, compiling C source (. This may happen when you download a Linux distribution's development group which contains various packages to facilitate development. On line 1 (commented out) I show the gcc command to compile this program, and you can see that we simple add neuron. The above lists of processor model names are not exhaustive - other processor models correctly supporting the same instruction set as those listed are expected to work. c), you probably don't want to build a library as an intermediate step, although you could do it that way. Dec 25, 2021 · Individual vendor compatibility checklists (these are more up-to-date than the table above) GCC (Updated 2021-02) C++11 core language support status (complete as of 4. c where % is the unix prompt. gcc -Idir: Includes the directories ofIn cross compiling, the following (confusing) terminology is used: Build platform: Architecture of the build machine. Intel C++ has an identical performance where other compiler faces scalar instructions. Perform the below steps to install GCC Compiler on Ubuntu 20. Compile the C library and all other parts of the glibc package (including the threading and math libraries, NSS modules, and transliteration modules) using the GCC -fstack-protector, -fstack-protector-strong or -fstack-protector-all options to detect stack overruns. ino one, the web IDE created it for me when I choose to start a new project) with an include for the new . Quick and Easy way to compile and run programs online. gcc -Wall -g -c hello. 0 will be created. Many options have multi-letter names; therefore multiple single-letter options may not be grouped: -dv is very different from -d-v. The best comprehensive IDE for . Notes on GCC and standard C inline functions. c, type: Jan 23, 2022 · Step 2) Select the installer with GCC for Windows compiler. Cross and Native File reference. c' to an object file: $ gcc -Wall -c main. 2. gcc file1. To Edit the file: 3. Testing. o' containing the machine code for the main function. obj file depends on a like-named . The compiler then tries to find that file. gcc -o hellomake hellomake. c and then how i will use myprog with the . c hello_fn. ld会去找GCC命令中的参数-L 2. Don’t worry if you are not familiar with AT&T syntax, I will teach you. Jose E. Paste your code below, and codepad will run it and give you a short URL you can use to share it in chat or email. Extract the contents of that file to where you like and open Visual Studio. The GCC (GNU Compiler Collection) Steering Committee has lifted a long-standing requirement that all code contributions must be assigned to the FSF (Free Software Foundation). 0_1 Sep 15, 2020 · BPF is currently generated using the LLVM compiler suite. com. Nov 21, 2021 · The two new files magicsquare and run_magicsquare. Jul 09, 2014 · # Compile an executable named yourProgram from yourProgram. Filenames: Header files are usually in the format filename. Compile-run C/C++ source code and execute Makefile in Atom. To compile a file without linking it, use the -c option: g++ -o file. If you tell gcc to just compile (by using the -c option), this is what it produces. I C program after preprocessing file. 1. In its most basic form, gcc compiler can be used as : gcc main. java files from the command line is super simple. High Salary. exe. Libraries. define any compile-time flags CFLAGS = -Wall -g #. – Compiles BOTH files and makes a. Create this file with Leafpad (or, in terminal, nano Makefile), then write: all: gcc -o program yourcode. md Some index files failed to download. Compile the current actively opened C/C++ file. c: Type the following lines (program): After writing your program, press Ctrl + O and hit Enter key to save your program. data+0x0): multiple Hello. 0 Keys within sections are now case sensitive. Create a CMakeLists. The main design point of Meson is that every moment a developer spends writing or debugging build definitions is a second wasted. c -o some/out/dir/foo. c -I. 2OpenMPI compilers. Run thedownloaded installer and accept the default options to install GCC Feb 16, 2018 · Without this flag, on Mac OS X, you are likely to encounter duplicate symbols when linking 502. pyd for Windows) file is written into the target directory and your module, yourmod, is available for you to import as with any other Python module. To prevent this, the revdep-rebuild command should be run against the libstdc++. h on your system. GCC Practice. I won’t go into too many details, but the easiest way to think about specs files is that they are CFLAGS and LDFLAGS which are conveniently bundled into a single configuration. where the -c flag tells the compiler to stop after the compilation phase# which compilers to use set(CMAKE_C_COMPILER i686-w64-mingw32-gcc) set(CMAKE_CXX_COMPILER i686-w64-mingw32-g++)