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The default GCC version in Ubuntu 12.04 is 4.6. But this version will be on the road when compiling Android 4.0 source code, the following is the method of installing and setting up GCC4.4.The first method:Install GCC 4.4First, install GCC 4.4 (and friends):apt-get install gcc-4.4 g++-4.4 g++-4.4-multilib gcc-4.4-multilibSet 4.4 To is the defaultThen set 4.4 to is higher priority than 4.6:update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.4

Environment: kali-linux-2016.1-i386Software version: jdk-8u91-linux-i586DownloadHttp://www.oracle.com/technetwork/java/javase/downloads/index.htmlUnzip the package copyTAR-XZVF jdk-8u91-linux-i586.gzMV jdk1.8.0_91//usr/binInstall RegistrationUpdate-alternatives--install/usr/bin/java Java/usr/bin/jdk1.8.0_91/bin/java 1Update-alternatives--install/usr/bin/javac Javac/usr/bin/jdk1.8.0_91/bin/javac 1Update-

Install Hadoop in Linux (pseudo distribution mode) before writing: when installing Hadoop in Linux, pay attention to permission issues and grant hadoop permissions to non-root users. This article does not cover how to create a new user in Linux. Step 1: Install JDK1. download java. sun. com2. decompress the tar.gz file tar-xzvf jdk-7u17-linux-x64.tar.gz3. move the extracted folder to the/usr/local/jdk-1.7 directory mv/usr/local/src/jdk1.7.0 _ 17/usr/local/jdk-1.74. modify profilevi/etc/profile a

Install JDK 1.6 in Ubuntu and set it to the default JDK 1. download the Liunx JDK in Windows, my jdk-6u43-linux-i586.bin2. upload JDK to Ubuntu3. manually install JDK through secureCRT (I installed under/usr/local/bin/jdk1.6.0 _ 43): First modify the permission sudo chmod u + x jdk-6u43-linux-i586.bin to install sudo-s. /jdk-6u43-linux-i586.bin4. configure the environment variable to open the profile file sudo nano/etc/profile and add # author ylchou # date 2013-06-23export JAVA_HOME =/usr/local

Ubuntu uses different versions of gccubuntu system different versions have different gcc, such as ubuntu10.04 default gcc version is gcc-4.4.1, ubuntu10.10gcc default version is gcc-4.4.5. but in actual use, because of cross-compilation or other specific requirements, we... Ubuntu uses gcc of different versionsDifferent versions of ubuntu have different gcc, such as ubuntu 10.04 default gcc version is gcc-4.4.1, ubuntu 10.10gcc default version is gcc-4.4.5.However, in actual use, we want to use

Ubuntu delete openjdk install SunJDK1. download the installation package to the official website: jdk-7-linux-i586.tar.gz2. create the installation directory: sudomkdir/usr/lib/jvm3. decompress: tarzxvf. /jdk-7-linux-i586.tar.gz-C/usr/lib/jvm4. set the environment variable :... ubuntu delete openjdk install Sun JDK 1. download the installation package to the official website: jdk-7-linux-i586.tar.gz2. create the installation directory: sudo mkdir/usr/lib/jvm3. decompress: tar zxvf. /jdk-7-linux-

the current jdkupdate-alternatives -- display java7. configure the default jdkupdate-alternatives -- install/usr/bin/java/usr/local/jdk1.7.0 _ 17/bin/java 300update-alternatives -- install/usr/bin/javac/usr/local/jdk1.7.0 _ 17/bin/javac 300update-alternatives -- install/usr/bin/javap/usr/local/jdk1.7.0 _ 17/bin /javap

Ubuntu14.04 install JDK and ubuntu14.04jdk Download from Sun's official website Http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html Select accept license, and then select JDK download suitable for your model. Decompress the file and modify the file name. sudo mkdir /usr/lib/jvmsudo tar zxvf jdk-8u11-linux-i586.tar.gz -C /usr/lib/jvmcd /usr/lib/jvmsudo mv jdk1.8.0_11 java Add Environment Variables sudo vim ~/.bashrc Add the following content export JAVA_HOME=/usr

the online search error occurred because the Linux system is not the default point to the JDK version of the installation , so, to view the next[email protected] ~]# which Java/usr/bin/java[email protected] ~]# ls/usr/bin/java-llrwxrwxrwx. 1 root root 22 September 11:37/usr/bin/java-/etc/alternatives/java[email protected] ~]# Ll/etc/alternatives/javalrwxrwxrwx. 1 root root 35 September 11:37/etc/

update-alternatives--install/usr/bin/java java/usr/lib/jvm/jdk1.7.0_60/bin/java sudo update-alternatives--Install/usr/bin/javac javac/usr/lib/jvm/jdk1.7.0_60/bin/javac sudo update-alternatives--install/usr/bin/jar jar /usr/lib/jvm/jdk1.7.0_60/bin/jar sudo update-alternatives--install/usr/bin/javah javah/usr/lib/jvm/jd

JVM and rename them to the Java folder$ sudo MKDIR/USR/LIB/JVM$ sudo tar zxvf jdk-8u25-linux-i586.tar.gz-c/USR/LIB/JVM$ CD/USR/LIB/JVM$ sudo mv jdk1.8.0_25 Java2. Add an environment variable (~ represents the root directory of the current user)$ sudo vi ~/.BASHRCAdd the following environment variable configuration content in the tail line:Export Java_home=/usr/lib/jvm/javaExport JRE_HOME=${JAVA_HOME}/JREExport Classpath=.:${java_home}/lib:${jre_home}/libExport Path=${java_home}/bin: $PATH3. Con

the followingsudo update-alternatives--install/usr/bin/java Java/usr/lib/jvm/jdk7/bin/java 300sudo update-alternatives--install/usr/bin/javac Javac/usr/lib/jvm/jdk7/bin/javac 300sudo update-alternatives--install/usr/bin/jar Jar/usr/lib/jvm/jdk7/bin/jar 300Performsudo update-alternatives--config java(sudo update-

-alternatives -- install/usr/bin/Java/usr/local/jdk1.7.0 _ 17/bin/Java 300Sudo Update-alternatives -- install/usr/bin/javac/usr/local/jdk1.7.0 _ 17/bin/javac 300Sudo Update-alternatives -- install/usr/bin/Jar/usr/local/jdk1.7.0 _ 17/bin/jar 300Sudo Update-alternatives -- install/usr/bin/javah/usr/local/jdk1.7.0 _ 17/bi

Compile android source code 3 --- install JDK 6 on ubuntuFor Android 2.3 and later versions, JDK 6, that is, JDK 1.6, must be used instead of copying files to/urs/lib/jvm. Cd download Sudo su Sudo cp jdk-6u45-linux-x64.bin/usr/lib/jvm2. jdk-6u45-linux-x64.bin File Installation # Chmod 777 jdk-6u45-linux-x64.bin grants the current user permission to execute#. Jdk-6u45-linux-x64.bin.bin3. Change the environment variable 4. Configure the default JDK version Sudo update-