Build error dev cpp

Dev C++, created by Bloodshed programming, is a free IDE for programming in C/C++. It works with Windows 7, 8 and 10 and can be used to compose Windows or control centre based C/C++ programs effectively, and you can also make an installer for your application.

In this article, we’re going over what is the Dev C++ build error, and quick fixes for the error.

---

What is the Dev C++ build error?

Build represents a compilation of the code. If the code is built successfully, it is now executable and does not have any errors. An error is the illicit use of commands or operations, leading to abnormal functionality. An error prevents the code from being built or compiled and hence becomes non-executable.

There are five different types of errors commonly seen in C/C++.

• Syntax error
• Run-time error
• Linker error
• Logical error
• Semantic error

The syntax error is also known as compilation error or build error.

---

Syntax errors

Syntax errors occur due to a violation of the basic rules or syntax for writing the code in the C/C++ language. This error prevents the code from getting compiled. All the syntax errors detected by the compiler need to be resolved for the code to compile successfully.

The most common syntax errors are forgetting to put a semicolon, incorrect number of parenthesis and using a variable without the declaration, among others.

Note the words failed and Error 1 in the snipped above. This indicates that the code ran into a build error.

Also read: How to create a project in Dev C++?

---

Ensure that the version being used is the latest and is supported by your device.

The first step to follow when a build error occurs is to check the errors and the lines where it is happening. Then, under the Compiler tab in the bottom panel, the error message is mentioned alongwith the line number.

Follow the message and attempt to debug the code. The error in the above snippet is expected ‘;’ before return, which indicates that the 6th line is missing a semicolon.

---

Paranthesis

Build errors may occur due to the incorrect opening/closing of the parenthesis or an incorrect number of them. Always make sure that function calls like main(), or any other user-defined function has the opening and closing brackets next to them with or without the parameters in them depending on the type of function.

When writing a conditional statement like if, if-else, for, switch, while and others, double-check the number of opening parenthesis. Nested loops might often have a confusing set of brackets. Always keep practising making both the start and end set of parenthesis when starting a new loop.

---

Spell check

While coding, the spellings of variables, functions, methods, and keywords often go wrong and sometimes may not be detected as a spelling error in the console, which makes it tricky to fix the errors. C/C++ is a case-sensitive language.

All user-defined variables, functions and methods must be called in the same case for the code to build error-free. Try to keep the names of variables and functions easy to remember, something meaningful to its function in the code and not very complicated in terms of the casing.

---

Semicolon

Forgetting a semicolon is one of the worst nightmares of any coder. The absence of a single semicolon can prevent the entire program from building.

If the semicolon is missed within a loop, it can cause many more errors that may make no sense. Ensure to insert a semicolon after every single line of code, with the given exceptions of functions and beginnings of loops.

---

Data type

Every initialised variable and user-defined function has a specific data type. Data types include int or integer, str or string, float and many others. Using the wrong data type under these variables can cause the entire program to break down.

When writing a command for taking input or initialising the values for the variables, double-check the originally initialised data type for it. If the function is an array or tuple, or dictionary, check all the individual parameters before calling them.

---

Syntax

While C and C++ are both similar and can be written in the same software, there are a few key differences in the syntax of the two languages. For instance, the commands for input and output in C are scanf and print; on the other hand, cin and cout are C++ commands.

Writing a C code in C++ and vice-versa often leads to syntax errors that may be correct in the other language. Always use syntax for the language in which the file/project was created.

Another important aspect of the syntax is the include files. There are specific header files to be written initially in the code to use specific functions like input-output, mathematical functions and others. The absence of header files prevents the function from being verified and used; hence the build may fail.

Also read: How to add a header file in Dev C++?

Dev cpp compiler error

1) На Раздел распространяются все Правила Форума.
2) Перед тем, как создать новый топик, убедитесь, что Вы читали Правила создания тем в Разделе.
3) Вопросы, не связанные с программированием (настройки MS Visual Studio, книги, библиотеки и т.д.),
обсуждаются в разделе C/C++: Прочее
4) Вопросы разработки .NET (Windows Form, C++/CLI и т.п.) приложений на Visual C++/C# обсуждаются в разделе .NET.
5) Нарушение Правил может повлечь наказание со стороны модераторов.

Полезные ссылки:
FAQ Раздела Обновления для FAQ Раздела Поиск по Разделу MSDN Library Online

Dev-C++ Совершенно не хочет компилить никакие проекты.
При попытке откомпилить проект(msdos app) оно грит:
Compiler: Default compiler
Building Makefile: «F:Program FilesDev-CppProjectsDOSMakefile.win»
Executing make.
make.exe -f «F:Program FilesDev-CppProjectsDOSMakefile.win» all
g++.exe -c main.cpp -o main.o -I»F:/Program Files/Dev-Cpp/include/c++» -I»F:/Program Files/Dev-Cpp/include/c++/mingw32″ -I»F:/Program Files/Dev-Cpp/include/c++/backward» -I»F:/Program Files/Dev-Cpp/include»

make.exe: *** [main.o] Error 1

и так всегда

Вроде бы все настроил, все фолдеры указал, а он все равно упирается. Мож где че позабыл?

версия — Dev-C++ 4.9.8.0.
проект создавал через file->new->project->winapp

/* Declare Windows procedure */
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);

/* Make the class name into a global variable */
char szClassName[ ] = «WindowsApp»;

int WINAPI WinMain (HINSTANCE hThisInstance,
HINSTANCE hPrevInstance,
LPSTR lpszArgument,
int nFunsterStil)

<
HWND hwnd; /* This is the handle for our window */
MSG messages; /* Here messages to the application are saved */
WNDCLASSEX wincl; /* Data structure for the windowclass */

/* The Window structure */
wincl.hInstance = hThisInstance;
wincl.lpszClassName = szClassName;
wincl.lpfnWndProc = WindowProcedure; /* This function is called by windows */
wincl.style = CS_DBLCLKS; /* Catch double-clicks */
wincl.cbSize = sizeof (WNDCLASSEX);

/* Use default icon and mouse-pointer */
wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);
wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
wincl.lpszMenuName = NULL; /* No menu */
wincl.cbClsExtra = 0; /* No extra bytes after the window class */
wincl.cbWndExtra = 0; /* structure or the window instance */
/* Use Windows’s default color as the background of the window */
wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND;

/* Register the window class, and if it fails quit the program */
if (!RegisterClassEx (&wincl))
return 0;

/* The class is registered, let’s create the program*/
hwnd = CreateWindowEx (
0, /* Extended possibilites for variation */
szClassName, /* Classname */
«Windows App», /* Title Text */
WS_OVERLAPPEDWINDOW, /* default window */
CW_USEDEFAULT, /* Windows decides the position */
CW_USEDEFAULT, /* where the window ends up on the screen */
544, /* The programs width */
375, /* and height in pixels */
HWND_DESKTOP, /* The window is a child-window to desktop */
NULL, /* No menu */
hThisInstance, /* Program Instance handler */
NULL /* No Window Creation data */
);

/* Make the window visible on the screen */
ShowWindow (hwnd, nFunsterStil);

/* The program return-value is 0 — The value that PostQuitMessage() gave */
return messages.wParam;
>

/* This function is called by the Windows function DispatchMessage() */

LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
<
switch (message) /* handle the messages */
<
case WM_DESTROY:
PostQuitMessage (0); /* send a WM_QUIT to the message queue */
break;
default: /* for messages that we don’t deal with */
return DefWindowProc (hwnd, message, wParam, lParam);
>

Источник

Dev-C++ — [Build Error] [main.o] Error 1

Hi again everyone, Im running into big trouble with my compiler Dev-C++, every time i compile any project, whether it is 1 im working on, or a completely fresh 1 I get the same error every single time, I have been on the bloodshed forums and IRC channel but Im not getting anywhere with it. I am interested in working with Windows Programming in C/C++ at the moment and every project I try to compile gives the same error.

and this is my compile log

I have tried many times re-installing the program aswell as re-configuring it and installing with fresh configurations etc. nothing seems to work, I get the same error over and over again. anyone know why or how to overcome it ?

21 Contributors 45 Replies 21K Views 8 Years Discussion Span Latest Post 8 Years Ago Latest Post by muhammad raees

What is the code in main.cpp, and where is main.cpp located?

Hi again. I have found out how to compile and link my program, I can only do it step by step using the command line but it works like that. however Im getting lots of error messages like these.

Hey i was also suffering that problem when i came upon your thread, and i found however , when out of nowhere my brain said why did this work yesterday and not today, the answer is i had started a windows project today instead of a console application and that …

The only thing im concerned about there, is why are you using dos to complie when dev cpp has a very useful compilers which uses makefiles (which are a godsend in bigger projects)

ive never used g++ in cmd so im not sure what the correct syntax for it …

./Borland/libxml library/lib/libxml2-bcc.lib: file not recognized: File format not recognized

that error is referring to libxml2-bcc.lib. gcc and g++ do not recognize libraries wth *.lib file extension, only *.a file extension. That library was built for a different compiler.

might be a dumb question — but did you check your computer to see if those -I

paths actually exist?

Is C:Dev-Cppbin in your path?

C:TestGnuC>path
PATH=C:WINNTsystem32;C:WINNT;C:WINNTSystem32Wbem;C;iccbin;C:Dev-Cppbin;C:BC5BIN;C:watcomBINNT;C:watcomBINW;c:Perlbin;C:Program FilesActiveState Komodo 3.1;C:Program FilesCommon FilesGTK2.0bin;C:Program FilesCommon FilesAutodesk Shared;C:Program FilesAutodeskDWG TrueView;..tool;C:Program Filesdoxygenbin;C:Program FilesSubversionbin;C:Program FilesMicrosoft Visual StudioCommonToolsWinNT;C:Program FilesMicrosoft Visual StudioCommonMSDev98Bin;C:Program FilesMicrosoft Visual StudioCommonTools;C:Program FilesMicrosoft Visual StudioVC98bin;C:Program FilesMicrosoft Visual StudioCommonIDEIDE98;C:Program Filesvslickwin;C:NECTOOLSBIN;..tool;C:COSMICEVAL08;c:nectools32bin;

Yes I have checked all of the paths and they all exist. this even happens when I compile a project from scratch..ie.

Dave what do you mean by is C:Dev-Cppbin in my path ? and what is all of that within the code box? I thought it may have come from command prompt or something like that so i tried typing.

I dont have a clue what any of that is for, could you explain it? thanks.

I’m asking you what I think your make utility is asking you. Does it know where to look for g++?

The stuff in the box is a copy of my result when I execute the path command in a command shell. It is telling me that the path to g++ is indeed available to my system. Yours tells you this is not so.

When you install Dev-Cpp, do you need to reboot to update the path? (It’s been so long since I’ve done this that I forget.)

>>When you install Dev-Cpp, do you need to reboot to update the path?

I think it depends on which version of Windows is running. W2K/XP, definitely not. Win95/98/ME, I’m not sure either (I never used ME)

Oh right. Im running windows xp professional with sp1, im never prompted to reboot or anything like that, it has always worked perfect until now, im continuously getting these errors. yes g++.exe is in the c:Dev-Cppbin directory. do you have any suggestions on what i should do?

Add c:Dev-Cppbin to your path. Reboot.

(But it does appear to find the make utility, which I would assume is in the same directory, so I’m reaching for straws.)

Add c:Dev-Cppbin to your path. Reboot.

(But it does appear to find the make utility, which I would assume is in the same directory, so I’m reaching for straws.)

I use XP Pro too.

you might also check the length of the PATH environment variable. On my computer it’s so long that there isn’t any room left to add more. So I have a batch file to truncate the PATH to bare necessity so that I can run other command-line programs from command prompt.

Look at the end of the PATH as shown in command prompt — if the last path isn’t all there, then you probably have to same problem that I do.

you might also check the length of the PATH environment variable. On my computer it’s so long that there isn’t any room left to add more. So I have a batch file to truncate the PATH to bare necessity so that I can run other command-line programs from command prompt.

You can change this. I’ve forgotten how I did it, but I ran into the same problem. Increasing the enviroment size fixed it.

I think it’s a parameter to command.com in config.sys.

this is probably not relivent to this thread — but here is what I found in MSDN for environment variables

• The maximum individual environment variable size is 8192bytes.

• The maximum total environment variable size for all variables, which includes variable
names and the equal sign, is 65,536KB.

Ah ok I will try to do that in a few moments once I find out how lol. but why isnt there lots of other .exe files (or directories) listed in path, I have many other applications installed.

That didnt work, but I dont think I did it correctly. how would i add that to path ?

I generally right-click My Computer, and select Properties to bring up the System Properties dialog. In the Advanced tab, click the Environment Variables. button. Then find the path variable and edit it. Alternatively, I think you can add it to the autoexec.bat which should be in the root directory.

You’ll know you’ve done it correctly when you go to a command shell and type path, like you did earlier, and it now shows the d:dev-cppbin as being part of the path.

Thanks, I have did that, It has been added to path successfully but Dev-C++ still doesnt work. I have rebooted as soon as i added C:Dev-Cppbin; to path but the error is still the same. any mroe suggestions ?

What is the code in main.cpp, and where is main.cpp located?

This happens every single time i try to compile any project whether it would be a template given by Dev-C++ when creating a windows application or something I have been working on. I save all the files like the source, resource, header and all the files created by the compiler in the same directory, «C:Dev-Cpp» from which I create a another directory depending on what Im creating for example «C:Dev-CppNew_Project» is where I have saved all the files of a brand new project. and here is what main.cpp contains.

Have you tried compiling using the command-line?

yes I have tried that, it doesnt work.

I save all the files like the source, resource, header and all the files created by the compiler in the same directory, «C:Dev-Cpp» from which I create a another directory depending on what Im creating for example «C:Dev-CppNew_Project» is where I have saved all the files of a brand new project. and here is what main.cpp contains.

So you’re saying that you are saving main.cpp in the compiler’s home directory «C:Dev-Cpp»? First, that a practice I generally avoid. Though I doubt it’s the problem here.

It looks to me that the make utility is not finding the source file. Could you post your makefile and .dev file? And state which directory these are in? And am I correct in understanding that you have main.cpp saved in «C:Dev-Cpp»?

Thanks, I have did that, It has been added to path successfully but Dev-C++ still doesnt work. I have rebooted as soon as i added C:Dev-Cppbin; to path but the error is still the same. any mroe suggestions ?

you definitely have a config problem. Your path is wrong &/or dev c++ isnt installed correctly.

some of the following has already been suggested, but ill put it here for completeness anyway.

1st start up a cmd prompt box (click on start, then run & then type ‘cmd’ in the text box).

from the cmd prompt box:

You can test the path setting by just typing ‘g++’. If the path is correct you will see something like:

g++: no input files

you can also try typing ‘make’, which should produce:

make: *** No targets specified and no makefile found. Stop.

If neither work, your path setting is definitely wrong.
If one works & not the other, you have a mixed up configuration.

You can try searching for «g++» and make sure that the folder that it is actually in is alos the folder in the path setting.

I have carried out both of those commands in command prompt, and they both produced what expected.

To keep things simple I will attempt to make another windows project and compile it on the root («C:»), I will post the makefile(*.win) and project file(*.dev) here.

As you can see this contains only the source file, and still produces the same error.

So is your main.cpp file in the same directoty as the .dev file and the make file?

Yes all of the files that have something to do with the project are stored in the same directory..source, resource, header, object, makefile, project, icons (this brand new project in C: only has a project file and source file and the makefile that is created..)

Do you have any idea about the problem or could you recommend me to try somewhere else please? I have tried on the IRC channel but the 2 people who ever replied didnt know and I did not get a solution ont he bloodshed forum. If not can you recommend any more free compilers that I could try to use. Thanks for your help.

I think I’ve exhausted my attempts. I don’t understand what the issue is.

Ok, thanks a lot for all of your help on this. I will try something new, I will post back if I ever solve the problem..

Hi again. I have found out how to compile and link my program, I can only do it step by step using the command line but it works like that. however Im getting lots of error messages like these.

Im sure I have had these before when actually using the IDE. but I cant remember how to correct them. do you know how ? (these functions are within libraries that require me only to include windows.h I think. which I have)

Hi again everyone, Im running into big trouble with my compiler Dev-C++, every time i compile any project, whether it is 1 im working on, or a completely fresh 1 I get the same error every single time, I have been on the bloodshed forums and IRC channel but Im not getting anywhere with it. I am interested in working with Windows Programming in C/C++ at the moment and every project I try to compile gives the same error.

and this is my compile log

I have tried many times re-installing the program aswell as re-configuring it and installing with fresh configurations etc. nothing seems to work, I get the same error over and over again. anyone know why or how to overcome it ?

I was getting this EXACT same error, and i fixed it by renaming my initial file from test to test.cpp (duuhh) and moving the project into a different folder Dev-Cppprojects

In my case it seems it was just the stupppid mistake of creating the new file and not renaming it properly.

Hi again. I have found out how to compile and link my program, I can only do it step by step using the command line but it works like that. however Im getting lots of error messages like these.

Im sure I have had these before when actually using the IDE. but I cant remember how to correct them. do you know how ? (these functions are within libraries that require me only to include windows.h I think. which I have)

I dont use dev-cpp, only MSVC++. Including windows.h is okay for compilation, but you should specifythe required libraries when you link them in the command prompt. For the MSVC I use something like cl main.cpp /link user32.lib gdi32.lib You would need to do something like that in dev-cpp also.

We’re a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.

Reach out to all the awesome people in our software development community by starting your own topic. We equally welcome both specific questions as well as open-ended discussions.

Источник

Dev-C++ — не хочет компилять

0 пользователей читают эту тему (0 гостей и 0 скрытых пользователей)

0 пользователей:

Hi, thanks for your help.

I assume you are using Dev-C++ to develop and a makefile thru Cygwin to
compile and run.

No, I only use Dev-C++. Before installation of Cygwin everything worked.
However I assume that during installation of Cygwin or GiNaC library something
happened which now causes the problems (please see my first post for a
description of the installation steps I performed).

It cannot find the library files in the linkjng phase. It should just be
looking just for gsl, etc. The «lib» prefix and the «.a» extension are not
needed, but it shouldn’t matter if you have them. But is it linking to the
entire path ../../../../Program Files/GnuWin32/lib/ . This will override the
directory link -L»C:/MinGW/lib». Also, by not being contained in quotes, it
will not be able to find the file.

I noticed your files and libraries both are prefixed with -L. One of them
should have a different prefix.

I can’t understand why everything worked before installation of cygwin, I
didn’t change compiler options manually (maybe during installation this
happened automatically?) or the project itself. The ../../../../ paths are the
same as before, I once added them under ProjectOptions->Parameters (i.e. not
contained in quotes or leaving out the prefixes). The MinGW path instead of
the Dev-Cpp path appears due to the following reason: I have two copies of
mingw32, one in MinGW and one in Dev-Cpp. This caused error messages, so I
had to put the path C:/MinGW/lib under compiler options -> Directories . This
solved the problem.

If you can’t figure it out post your makefile. I hope its not the usual
Linux style makefile.

Here’s the content of Makefile.win, which is automatically produced by Dev-C++
:

Project: UsingGSL

Makefile created by Dev-C++ 4.9.9.2

CPP = g++.exe
CC = gcc.exe
WINDRES = windres.exe
RES =
OBJ = GSLExample1.o $(RES)
LINKOBJ = GSLExample1.o $(RES)
LIBS = -L»C:/MinGW/lib» «../../../../Program Files/GnuWin32/lib/libgsl.a»
«../../../../Program Files/GnuWin32/lib/libgslcblas.a» «../../../../Program
Files/GnuWin32/lib/libgslcblas.dll.a»
INCS = -I»C:/Dev-Cpp/include» -I»C:/Program Files/GnuWin32/include»
CXXINCS = -I»C:/Dev-Cpp/lib/gcc/mingw32/3.4.2/include» -I»C:/Dev-
Cpp/include/c++/3.4.2/backward» -I»C:/Dev-Cpp/include/c++/3.4.2/mingw32″ -I»C
:/Dev-Cpp/include/c++/3.4.2″ -I»C:/Dev-Cpp/include» -I»C:/Users/Martin/Desktop
/NumericalRecipes/NumericalRecipesThirdEditionSourceCodeCDROMv3.0/code»
-I»C:/Program Files/GnuWin32/include»
BIN = UsingGSL.exe
CXXFLAGS = $(CXXINCS)
CFLAGS = $(INCS)
RM = rm -f

.PHONY: all all-before all-after clean clean-custom

all: all-before UsingGSL.exe all-after

clean: clean-custom
${RM} $(OBJ) $(BIN)

$(BIN): $(OBJ)
$(CPP) $(LINKOBJ) -o «UsingGSL.exe» $(LIBS)

GSLExample1.o: GSLExample1.cpp
$(CPP) -c GSLExample1.cpp -o GSLExample1.o $(CXXFLAGS)