Long double is printed incorrectly in CodeBlocks using MinGW/long double

2021-04-08 03:19 FabQrz imported from Stackoverflow

The problem:

My code work's fine using Cygwin (long double is printed like having 16 bytes of memory, and the min, and max values are OK), but using MinGW the CodeBlocks say long double have 12 bytes of memory (if I modify the code to show the size in int instead long double, in long double is -2,000000), and the min and max values it's printed like -0,000000 both.

Codeblocks version: 20.03.
MinGW-W64 project (version 8.1.0, 32/64 bit, SEH).

I tried with the prompt but, is the same thing!

I saw in a post that this problem is generated by Windows, but if it works with Cygwin, then there is a solution that maybe someone somewhere knows...

Observation:

I can use Cygwin, but Portuguese has so many accented words, and I use them to name my directories, so when I use Cygwin the things are complicated, and I don't know how can I include some libs like conio.h correctly, and the MinGW has included libs like conio.h so I prefer to learn how to resolve this problem.

#include <stdio.h>
#include <math.h>

int main()
{
// Declaration of variables
long double min, max, size;

// Size
size = sizeof(long double);

// Min and Max
min = pow(2, (sizeof(long double)*8))*(-1);
max = pow(2, (sizeof(long double)*8));

// Print of results
printf("Size of long double: %Lf\n", size);
printf("Min of long double: %Lf\n", min);
printf("Max of long double: %Lf\n", max);

// end of main
return(0);
}

In mingw:

In cygwin:

1 answer

answered 2021-04-08 15:43 FabQrz
Download separated "MinGW-W64 Online Installer" (the mingw included in the codeblocks is 32bits because this is printed 12bit)

and

Install the version 7.3.0. (the version 8.1.0 is bugged because this is printed 0.000000 or -0.000000).

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C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\include\gtest\internal\gtest-port.h||In function 'int testing::internal::posix::StrCaseCmp(const char*, const char*)':|
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C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\src\gtest.cc|4900|error: '_set_error_mode' was not declared in this scope|
C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\src\gtest.cc|4900|note: suggested alternative: 'SetErrorMode'|
C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\src\gtest.cc|4920|error: '_CRT_ASSERT' was not declared in this scope|
C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\src\gtest.cc|4920|note: suggested alternative: 'C_ASSERT'|
C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\src\gtest.cc|4921|error: '_CRTDBG_MODE_FILE' was not declared in this scope|
C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\src\gtest.cc|4921|error: '_CRTDBG_MODE_DEBUG' was not declared in this scope|
C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\src\gtest.cc|4920|error: '_CrtSetReportMode' was not declared in this scope|
C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\src\gtest.cc|4920|note: suggested alternative: 'SetErrorMode'|
C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\src\gtest.cc|4922|error: '_CRTDBG_FILE_STDERR' was not declared in this scope|
C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\src\gtest.cc|4922|error: '_CrtSetReportFile' was not declared in this scope|
C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\src\gtest-death-test.cc||In function 'void testing::internal::DeathTestAbort(const string&)':|
C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\src\gtest-death-test.cc|296|error: '_exit' was not declared in this scope|
C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\src\gtest-death-test.cc|296|note: suggested alternative: '_Exit'|
C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\src\gtest-death-test.cc||In member function 'virtual void testing::internal::DeathTestImpl::Abort(testing::internal::DeathTest::AbortReason)':|
C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\src\gtest-death-test.cc|527|error: '_exit' was not declared in this scope|
C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\src\gtest-death-test.cc|527|note: suggested alternative: '_Exit'|
C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\src\gtest-death-test.cc||In member function 'virtual testing::internal::DeathTest::TestRole testing::internal::WindowsDeathTest::AssumeRole()':|
C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\src\gtest-death-test.cc|771|error: '_MAX_PATH' was not declared in this scope|
C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\src\gtest-death-test.cc|771|note: suggested alternative: 'MAX_PATH'|
C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\src\gtest-death-test.cc|773|error: 'executable_path' was not declared in this scope|
C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\src\gtest-death-test.cc|308|note: in definition of macro 'GTEST_DEATH_TEST_CHECK_'|
C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\src\gtest-death-test.cc|797|error: 'executable_path' was not declared in this scope|
C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\src\gtest-death-test.cc|308|note: in definition of macro 'GTEST_DEATH_TEST_CHECK_'|
C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\src\gtest-filepath.cc|49|error: '_MAX_PATH' was not declared in this scope|
C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\src\gtest-filepath.cc|101|note: in expansion of macro 'GTEST_PATH_MAX_'|
C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\src\gtest-filepath.cc|49|note: suggested alternative: 'MAX_PATH'|
C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\src\gtest-filepath.cc|101|note: in expansion of macro 'GTEST_PATH_MAX_'|
C:\Users\alexz\OneDrive\Desktop\googletest-release-1.10.0\googletest\src\gtest-filepath.cc|102|error: 'cwd' was not declared in this scope|
googletest\CMakeFiles\gtest.dir\build.make|75|recipe for target 'googletest/CMakeFiles/gtest.dir/src/gtest-all.cc.obj' failed|
CMakeFiles\Makefile2|170|recipe for target 'googletest/CMakeFiles/gtest.dir/all' failed|
C:\Users\alexz\OneDrive\Programe\C\Testare program C\Google Test\Makefile|144|recipe for target 'all' failed|
||=== Build failed: 23 error(s), 0 warning(s) (0 minute(s), 5 second(s)) ===|
||=== Run: all in googletest-distribution (compiler: GNU GCC Compiler) ===|

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Adding file: C:\CodeBlocks20.03Small\ConsoleApplication\program01INc\bin\Debug\program01INc.exe Changing directory to: C:/CodeBlocks20.03Small/ConsoleApplication/program01INc/. Set variable: PATH=.;C:\Program Files\CodeBlocks\MinGW\bin;C:\Program Files\CodeBlocks\MinGW;C:\Program Files\Microsoft MPI\Bin;C:\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\ProgramData\Oracle\Java\javapath;C:\Program Files (x86)\Intel\iCLS Client;C:\Program Files\Intel\iCLS Client;C:\Windows\System32;C:\Windows;C:\Windows\System32\wbem;C:\Windows\System32\WindowsPowerShell\v1.0;C:\Program Files\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files\Microsoft\Web Platform Installer;C:\Program Files\Microsoft SQL Server\110\Tools\Binn;C:\Program Files (x86)\Skype\Phone;C:\Program Files (x86)\Git\bin;C:\Program Files (x86)\Git\cmd;C:\Users\Roger.dnx\bin;C:\Program Files\Microsoft DNX\Dnvm;C:\Program Files\Microsoft SQL Server\130\Tools\Binn;C:\Program Files (x86)\GtkSharp\2.12\bin;C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET Web Pages\v1.0;c:\Program Files (x86)\Microsoft SQL Server\110\Tools\Binn;c:\Program Files\Microsoft SQL Server\110\DTS\Binn;C:\Program Files\Intel\WiFi\bin;C:\Program Files\Common Files\Intel\WirelessCommon;C:\Windows\System32\OpenSSH;C:\Program Files (x86)\FreeFem++;C:\Program Files\dotnet;C:\Program Files\Microsoft SQL Server\Client SDK\ODBC\170\Tools\Binn;C:\Program Files (x86)\Microsoft VS Code\bin;C:\Users\Roger\AppData\Local\Programs\Python\Python38-32\Scripts;C:\Users\Roger\AppData\Local\Programs\Python\Python38-32;C:\Users\Roger\AppData\Local\Programs\MiKTeX 2.9\miktex\bin\x64;C:\texlive\2017\bin\win32;C:\Users\Roger\AppData\Local\Microsoft\WindowsApps;;C:\Program Files (x86)\clisp-2.49 Starting debuggee: C:\MinGW\bin\gdb.exe -nx -fullname -quiet -args C:/CodeBlocks20.03Small/ConsoleApplication/program01INc/bin/Debug/program01INc.exe done Setting breakpoints Debugger name and version: GNU gdb (GDB) 7.6.1 Starting the debuggee failed: No executable specified, use `target exec'. Debugger finished with status 0

In building my project I used the defaults from the 'Select Compiler Dialog Box'.

Note01: It looks as if you should (date 11th April 2021) always use the default directory, to install. I installed a version of Code::Blocks in 'C:\Program Files\CodeBlocksSmall' when I went to uninstall it, the uninstaller would only accept 'C:\Program Files\CodeBlocks' as the directory to uninstall from. I deleted the CodeBlocksSmall directory manually.

Related question Starting the debuggee failed: No executable specified, use `target exec'

=======================

I have hopefully made progress towards an answer.

It looks as if a prior installation of 'MinGW' was inadvertently being used by the attempted debugging session(this is no longer possible). See the involvement of the file

"C:\MinGW\bin\gdb.exe", in the line

"Starting debugger: C:\MinGW\bin\gdb.exe -nx -fullname -quiet -args"

It looks to me as if I need to at least change the behaviour indicated by the above line, to

"Starting debugger: C:\Program Files\CodeBlocks\MinGW\bin\gdb.exe -nx -fullname -quiet -args"

Now when I try to run a debugging session failure occurs differently, see below

Active debugger config: GDB/CDB debugger:Default Building to ensure sources are up-to-date Selecting target: Debug Adding source dir: C:\Codeblocks20.03\ConsoleApp\program01INcForAnswer
Adding source dir: C:\Codeblocks20.03\ConsoleApp\program01INcForAnswer
Adding file: C:\Codeblocks20.03\ConsoleApp\program01INcForAnswer\bin\Debug\program01INcForAnswer.exe Changing directory to: C:/Codeblocks20.03/ConsoleApp/program01INcForAnswer/. Set variable: PATH=.;C:\Program Files\CodeBlocks\MinGW\bin;C:\Program Files\CodeBlocks\MinGW;C:\Program Files\Microsoft MPI\Bin;C:\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\ProgramData\Oracle\Java\javapath;C:\Program Files (x86)\Intel\iCLS Client;C:\Program Files\Intel\iCLS Client;C:\Windows\System32;C:\Windows;C:\Windows\System32\wbem;C:\Windows\System32\WindowsPowerShell\v1.0;C:\Program Files\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files\Microsoft\Web Platform Installer;C:\Program Files\Microsoft SQL Server\110\Tools\Binn;C:\Program Files (x86)\Skype\Phone;C:\Program Files (x86)\Git\bin;C:\Program Files (x86)\Git\cmd;C:\Users\Roger.dnx\bin;C:\Program Files\Microsoft DNX\Dnvm;C:\Program Files\Microsoft SQL Server\130\Tools\Binn;C:\Program Files (x86)\GtkSharp\2.12\bin;C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET Web Pages\v1.0;c:\Program Files (x86)\Microsoft SQL Server\110\Tools\Binn;c:\Program Files\Microsoft SQL Server\110\DTS\Binn;C:\Program Files\Intel\WiFi\bin;C:\Program Files\Common Files\Intel\WirelessCommon;C:\Windows\System32\OpenSSH;C:\Program Files (x86)\FreeFem++;C:\Program Files\dotnet;C:\Program Files\Microsoft SQL Server\Client SDK\ODBC\170\Tools\Binn;C:\Program Files (x86)\Microsoft VS Code\bin;C:\Users\Roger\AppData\Local\Programs\Python\Python38-32\Scripts;C:\Users\Roger\AppData\Local\Programs\Python\Python38-32;C:\Users\Roger\AppData\Local\Programs\MiKTeX 2.9\miktex\bin\x64;C:\texlive\2017\bin\win32;C:\Users\Roger\AppData\Local\Microsoft\WindowsApps;C:\Program Files (x86)\clisp-2.49 Starting debugger: C:\MinGW\bin\gdb.exe -nx -fullname -quiet -args C:/Codeblocks20.03/ConsoleApp/program01INcForAnswer/bin/Debug/program01INcForAnswer.exe failed

Installed sublime text 3 for c++ but showing "No such file or directory" include "wchar.h"

I've been trying to run simple c++ program

#include<iostream>
using namespace std;        
void main(){
    cout<<"helloworld";
}

But got a error like this:

In file included from d:\mingw\lib\gcc\mingw32\9.2.0\include\c++\bits\postypes.h:40:0,                   
                 from d:\mingw\lib\gcc\mingw32\9.2.0\include\c++\iosfwd:40,                              
                 from d:\mingw\lib\gcc\mingw32\9.2.0\include\c++\ios:38,                                 
                 from d:\mingw\lib\gcc\mingw32\9.2.0\include\c++\ostream:38,                             
                 from d:\mingw\lib\gcc\mingw32\9.2.0\include\c++\iostream:39,                            
                 from my.cpp:1:                                                                         
d:\mingw\lib\gcc\mingw32\9.2.0\include\c++\cwchar:44:10: fatal error: wchar.h: No such file or directory 
 #include <wchar.h>                                                                                      
                   ^                                                                                     
compilation terminated."

I have updated sublime-build file for windows and also changed environment variables. Please help me to fix this error in sublime. I am using MinGW compiler.

What is the CMake command to copy a resource directory to a build directory?
I am learning CMake in hurry at random order. I have a workspace in which an OpenCV project is being developed. The project contains a directory resources containing some images for testing.

During the development, I often have to build and run the app so the resources directory must be copied to the build before I can run it. If the previous build has already contain the resources directory, don't need to recopy it unless there are some changes in the resources directory.
```
cmake_minimum_required(VERSION 3.0.0)
project(cpp-opencv-project VERSION 0.1.0)

find_package(OpenCV REQUIRED)

include_directories(${OpenCV_INCLUDE_DIRS})

add_executable(${PROJECT_NAME} codes/main.cpp)

target_link_libraries(${PROJECT_NAME} ${OpenCV_LIBS})

set(CPACK_PROJECT_NAME ${PROJECT_NAME})
set(CPACK_PROJECT_VERSION ${PROJECT_VERSION})
include(CPack)
```
Question

What is the CMake code to smartly copy the resources directory to build directory?

Related questions

Long double is printed incorrectly in CodeBlocks using MinGW/long double

1 answer

See also questions close to this topic

=======================

Now when I try to run a debugging session failure occurs differently, see below

Question