expression-compiler

This is just me practicing compiler engineering after a long time of not doing so :)

How to Compile

First clone the repository

git clone https://github.com/OmarAzizi/expression-compiler.git && cd expression-compiler

Then make the build directory and change into it

mkdir build && cd build

Run the build command

cmake -GNinja -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ -DLLVM_DIR=/usr/lib/llvm ../ && ninja

Then go into the src directory inside of build where you will find the calc executable and run the following command:

./calc "with a: a*3" | llc -filetype=obj -relocation-model=pic -o=expr.o

Note: The expression could be changed to anything you want, with any amount of variables

Then link expr.o with the runtime library rtcalc.c as follows:

clang -o expr expr.o ../../rtcalc.c

After running the expr executable you will be asked to input a value for a

Example of compiling an expression