Why Change in Ld_Library_Path at Runtime Dosen'T Reflect on The Executable Once The Executable Gets Loaded

Why change in LD_LIBRARY_PATH at Runtime dosen't Reflect on the Executable once the Executable gets loaded

Unfortunately setting LD_LIBRARY_PATH from within a running program will have no effect on it. The reason for this is that LD_LIBRARY_PATH is processed by the dynamic link loader (ld.so), which is the program which starts your program. Your program itself doesn't process LD_LIBRARY_PATH so changing it will have no effect.

CLion C++ can't read/open .txt file in project directory

if inputFile.is_open() always returns false, inputFile.open("twoday.txt"); is not opening the file correctly, presumably because it can't find "twoday.txt"

Try setting an explicit path like "c:/path/twoday.txt" or "/path/twoday.txt" if you're using Linux. You could also try writing a file instead to see where it shows up, or something more exotic to return the current path.

Android Studio CMake Error: Build Command failed

@rpurohit was nearly right, Clang isn't working properly. But to change the Compiler you need to change build.gradle, in my build.gradle it was Line 12:

apply plugin: 'com.android.application'

1 android {
2    compileSdkVersion 25
3    buildToolsVersion '25.0.2'
4    defaultConfig {
5       applicationId 'com.example.hellojni'
6       minSdkVersion 23
7       targetSdkVersion 25
8       versionCode 1
9       versionName "1.0"
10      externalNativeBuild {
11          cmake {
12              arguments '-DANDROID_TOOLCHAIN=clang' --> gcc
            }
        }
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    externalNativeBuild {
        cmake {
            path "src/main/cpp/CMakeLists.txt"
        }
    }
    productFlavors {
        arm7 {
            // in the future, ndk.abiFilter might also work
            ndk {
                abiFilter 'armeabi-v7a'
            }
        }
        arm8 {
            ndk {
                abiFilters 'arm64-v8a'
            }
        }
        arm {
            ndk {
                abiFilter 'armeabi'
            }
        }
        x86 {
            ndk {
                abiFilter 'x86'
            }
        }
        x86_64 {
            ndk {
                abiFilter 'x86_64'
            }
        }
        mips {
            ndk {
                abiFilters 'mips', 'mips64'
            }
        }
        universal {
            ndk {
                abiFilters 'mips', 'mips64', 'x86', 'x86_64'
            }
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:25.2.0'
    compile 'com.android.support.constraint:constraint-layout:1.0.1'
}

Xcode project not showing list of simulators

Click on the project name (Right to the Run button). Three options will appear.

1. Edit scheme
2. New scheme
3. Manage scheme

You can click on "New scheme" and then click on "OK" in popup window.

You will have simulators list back.

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