cr.bat

@echo off
setlocal enableextensions enabledelayedexpansion

@REM v1: w/ cmake==
@REM ===========================
@REM cd build	
@REM cmake --build .

@REM rem ...
@REM Debug\hello.exe


@REM v2: w/o cmake
@REM ===========================
@REM e.g. cl main.cpp /std:c++20 /Fobuild\ /Febuild\main.exe
@REM cl main.cpp /std:c++%1 /Fobuild\ /Febuild\main.exe

@REM for cl     : c++latest (for c++23)
@REM for clang++: c++23

set CPP_VERSION=c++23

echo .
echo -------------------------
echo Compilation
echo -------------------------
echo -- Using %CPP_VERSION%

@REM Print clang version and date
for /f "tokens=3" %%v in ('clang++ --version ^| find "clang version"') do (
    echo -- clang++ version: %%v
    curl -s "https://api.github.com/repos/llvm/llvm-project/releases/tags/llvmorg-%%v" | find "published_at"
)

@REM cl main.cpp /std:%CPP_VERSION% /Fobuild\ /Febuild\main.exe
set CMD=clang++ -std=%CPP_VERSION% -fexceptions -Wall -Wextra -Wpedantic -fcolor-diagnostics main.cpp -o build/main.exe
echo -- cmd:
echo %CMD%
%CMD%
echo .

if %ERRORLEVEL% neq 0 (
    echo . & echo -- Compilation failed! Exiting...
    exit /b %ERRORLEVEL%
)
echo -- Compilation succeeded

build\main.exe

@REM v3: compiles if the source file is newer than the executable
@REM ===========================
@REM This script:
@REM First checks if main.exe exists at all - if not, we need to compile
@REM If it exists, compares the timestamp of main.cpp with main.exe
@REM Only compiles if the source file is newer than the executable

@REM if not exist main.exe goto compile

@REM set SRC_FILE=main.cpp
@REM set EXE_FILE=main.exe

@REM REM Get timestamps and sizes for both files
@REM for %%i in (%SRC_FILE%) do set SRC_TIME=%%~ti & set SRC_SIZE=%%~zi
@REM for %%i in (%EXE_FILE%) do set EXE_TIME=%%~ti & set EXE_SIZE=%%~zi

@REM REM Compare both timestamp and size
@REM if "%SRC_TIME%" gtr "%EXE_TIME%" goto compile

@REM goto run

@REM :compile
@REM echo Compiling %SRC_FILE%...

@REM cl main.cpp
@REM if %ERRORLEVEL% neq 0 (
@REM     echo --- Compilation failed! Exiting...
@REM     exit /b %ERRORLEVEL%
@REM )

@REM :run
@REM main.exe