68 lines
1.5 KiB
Markdown
68 lines
1.5 KiB
Markdown
## Steps to run this code
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These are the steps to run code for Assignment-A3.
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---
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> [!IMPORTANT]
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> Tested on Linux and Windows.
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### Prerequisites
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1. open-jdk (version 11 or higher)
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2. gcc
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3. Set open-jdk and gcc as environment variables using bin folder in path (For Windows Users only)
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4. Common sense
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### Steps For Linux
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1. Compile `A3.java`:
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```shell
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javac A3.java
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```
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2. Generate header file:
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```shell
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javac -h . A3.java
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```
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3. Compile C code:
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```shell
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gcc -shared -o libA3.so -fPIC -I"$JAVA_HOME/include" -I"$JAVA_HOME/include/linux" A3.c
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```
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> [!NOTE]
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> If you get an error saying _"fatal error: jni.h: No such file or directory"_, this might be because you haven't set `$JAVA_HOME` environment variable. Usually JVM stuff is in `/usr/lib/jvm/java-<version>-openjdk-amd64`. To set `JAVA_HOME` environment variable, run: `export $JAVA_HOME=/usr/lib/jvm/java-17-openjdk-amd64` (for version 17, adjust for your version accordingly.)
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4. Run program:
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```shell
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java -Djava.library.path=. A3
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```
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### Steps For Windows
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1. Compile `A3.java`:
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```shell
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javac A3.java
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```
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2. Generate header file:
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```shell
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javac -h . A3.java
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```
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3. Set `JAVA_HOME` to the path of your jdk file location:
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> Note that this is my file location for jdk. It may differ for you.
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```shell
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set JAVA_HOME=C:\Program Files\openjdk-23.0.1_windows-x64_bin\jdk-23.0.1
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```
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4. Compile C code:
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```shell
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gcc -shared -o A3.dll -fPIC -I"%JAVA_HOME%\include" -I"%JAVA_HOME%\include\win32" A3.c
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```
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5. Run program:
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```shell
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java -Djava.library.path=. A3
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```
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