Install on Linux

Hagane COBOL is tested on the following platforms:

OS	JDK
Ubuntu 26.04	OpenJDK 21
AlmaLinux 9	OpenJDK 11

1. Install the dependencies

Ubuntu

sudo apt-get update
sudo apt-get install -y default-jdk build-essential bison flex gettext texinfo libgmp-dev autoconf

AlmaLinux

sudo dnf -y update
sudo dnf install -y java-11-openjdk-devel gcc make bison flex automake autoconf diffutils gettext

2. Build and install Hagane COBOL

Download the source code of the latest release, then build and install it.

Shift_JIS source code (default)

curl -L -o hagane-cobol-v1.0.0.tar.gz https://github.com/yutaro-sakamoto/Hagane-COBOL/archive/refs/tags/v1.0.0.tar.gz
tar zxvf hagane-cobol-v1.0.0.tar.gz
cd Hagane-COBOL-1.0.0
./configure --prefix=/usr/
make
sudo make install

UTF-8 source code

curl -L -o hagane-cobol-v1.0.0.tar.gz https://github.com/yutaro-sakamoto/Hagane-COBOL/archive/refs/tags/v1.0.0.tar.gz
tar zxvf hagane-cobol-v1.0.0.tar.gz
cd Hagane-COBOL-1.0.0
./configure --prefix=/usr/ --enable-utf8
touch cobj/*.m4
make
sudo make install

3. Set CLASSPATH

Add libcobj.jar to the CLASSPATH environment variable, for example in ~/.bashrc:

export CLASSPATH="$CLASSPATH:/usr/lib/opensourcecobol4j/libcobj.jar"

4. Check the installation

cobj --version

Next, see Usage to compile and run your first program.