MSP430FR5969: Tutorial on how to extend the makefile functionality

@echo off
setlocal enabledelayedexpansion

REM Get Git version information
for /f "tokens=*" %%i in ('git describe --long --dirty --tags 2^>nul') do set GIT_DESCRIBE=%%i

REM Check if git describe command worked
if "%GIT_DESCRIBE%"=="" (
    echo WARNING: Git command failed or no tags found. Using default values.
    set GIT_DESCRIBE=v0.0.0-0-dev-dirty
)

REM Split the git describe output into components
set "version=%GIT_DESCRIBE:-= %"

REM Extract components
for /f "tokens=1,2,3,4" %%a in ("%version%") do (
    set VERSION_TAG=%%a
    set COMMITS_PAST=%%b
    set COMMIT=%%c
    set DIRTY=%%d
)

REM Initialize build info variables
set "BUILD_INFO_COMMITS="
set "BUILD_INFO_DIRTY="

REM Add commits info if not zero
if NOT "%COMMITS_PAST%"=="0" (
    set "BUILD_INFO_COMMITS=.%COMMITS_PAST%"
)

REM Add dirty marker if present
if NOT "%DIRTY%"=="" (
    set "BUILD_INFO_DIRTY=+"
)

REM Combine build info
set "BUILD_INFO=%COMMIT%%BUILD_INFO_COMMITS%%BUILD_INFO_DIRTY%"

REM Get build environment information
for /f "tokens=*" %%d in ('date /T') do set DATE=%%d
for /f "tokens=*" %%t in ('time /T') do set TIME=%%t
set "BUILD_DATE=%DATE%, %TIME%"
for /f "tokens=*" %%u in ('echo %username%') do set USERNAME=%%u
for /f "tokens=*" %%h in ('hostname') do set HOSTNAME=%%h
set "BUILD_MACHINE=%USERNAME%@%HOSTNAME%"

REM Display build information
echo Build Time: %BUILD_DATE%
echo Build Version: %VERSION_TAG%
echo Build Info: %BUILD_INFO%

REM Create compiler flags
set "GEN_OPTS__FLAG=--define=VERSION_TAG=\"%VERSION_TAG%\" --define=VERSION_BUILD_INFO=\"%BUILD_INFO%\" --define=VERSION_BUILD_MACHINE=\"%BUILD_MACHINE%\" --define=VERSION_BUILD_DATE=\"%BUILD_DATE%\""

REM Create a variables file that can be included in other batch files
echo @echo off > version_vars.bat
echo set "VERSION_TAG=%VERSION_TAG%" >> version_vars.bat
echo set "BUILD_INFO=%BUILD_INFO%" >> version_vars.bat
echo set "BUILD_MACHINE=%BUILD_MACHINE%" >> version_vars.bat
echo set "BUILD_DATE=%BUILD_DATE%" >> version_vars.bat
echo set "GEN_OPTS__FLAG=%GEN_OPTS__FLAG%" >> version_vars.bat

REM Create a variables file for makefile inclusion
echo VERSION_TAG=%VERSION_TAG% > version_vars.mk
echo BUILD_INFO=%BUILD_INFO% >> version_vars.mk
echo BUILD_MACHINE=%BUILD_MACHINE% >> version_vars.mk
echo BUILD_DATE=%BUILD_DATE% >> version_vars.mk
echo GEN_OPTS__FLAG=%GEN_OPTS__FLAG% >> version_vars.mk

echo.
echo Variables have been written to:
echo - version_vars.bat (for batch files)
echo - version_vars.mk (for makefiles)
echo.
echo To use in the current command prompt session, run:
echo call version_vars.bat

endlocal & (
    REM Export variables outside of the local scope
    set "VERSION_TAG=%VERSION_TAG%"
    set "BUILD_INFO=%BUILD_INFO%"
    set "BUILD_MACHINE=%BUILD_MACHINE%"
    set "BUILD_DATE=%BUILD_DATE%"
    set "GEN_OPTS__FLAG=%GEN_OPTS__FLAG%"
)