debian-build-flags.sh

echo 'export DEB_CFLAGS_MAINT_APPEND="-O3 -march=native -ftree-vectorize -flto -fprefetch-loop-arrays"' | sudo tee -a /etc/dpkg/buildflags.conf
echo 'export DEB_CXXFLAGS_MAINT_APPEND="-O3 -march=native -ftree-vectorize -flto -fprefetch-loop-arrays"' | sudo tee -a /etc/dpkg/buildflags.conf

debian-rebuild-all.sh

#!/bin/bash

# Directory to hold source packages
SRC_DIR=~/src
mkdir -p $SRC_DIR
cd $SRC_DIR

# Export the optimization flags
export DEB_CFLAGS_MAINT_APPEND="-O3 -march=native -mtune=native -ftree-vectorize -flto -fprefetch-loop-arrays"
export DEB_CXXFLAGS_MAINT_APPEND="-O3 -march=native -mtune=native -ftree-vectorize -flto -fprefetch-loop-arrays"

echo "Starting the recompilation process with CPU-specific and advanced optimizations for all installed packages..."
echo "Source directory: $SRC_DIR"
echo "Optimization flags: $DEB_CFLAGS_MAINT_APPEND, $DEB_CXXFLAGS_MAINT_APPEND"

# Get the list of installed packages
PACKAGES=$(dpkg --get-selections | grep -v deinstall | awk '{print $1}')

# Total packages count
TOTAL_PACKAGES=$(echo "$PACKAGES" | wc -l)
echo "Total packages to process: $TOTAL_PACKAGES"
PROCESSED=0
SKIPPED=0
RECOMPILED=0

# Loop through each package
for pkg in $PACKAGES; do
    PROCESSED=$((PROCESSED + 1))
    echo "[$PROCESSED/$TOTAL_PACKAGES] Processing $pkg..."
    
    # Download the source package
    if ! apt source $pkg; then
        echo "Error: Failed to download source for $pkg. Skipping..."
        SKIPPED=$((SKIPPED + 1))
        continue
    fi
    
    # Enter the source package directory
    if ! cd $pkg-*/; then
        echo "Error: Failed to enter source directory for $pkg. Skipping..."
        SKIPPED=$((SKIPPED + 1))
        continue
    fi
    
    # Install the build dependencies
    echo "Installing build dependencies for $pkg..."
    if ! sudo apt build-dep -y $pkg; then
        echo "Error: Failed to install build dependencies for $pkg. Skipping..."
        cd $SRC_DIR
        rm -rf $pkg-*/
        SKIPPED=$((SKIPPED + 1))
        continue
    fi
    
    # Build the package with CPU-specific and advanced optimization flags
    echo "Building $pkg with CPU-specific and advanced optimizations..."
    if ! DEB_BUILD_OPTIONS="parallel=$(nproc)" dpkg-buildpackage -b -uc -us; then
        echo "Error: Failed to build $pkg. Skipping..."
        cd $SRC_DIR
        rm -rf $pkg-*/
        SKIPPED=$((SKIPPED + 1))
        continue
    fi
    
    # Install the newly built package
    echo "Installing the newly built package for $pkg..."
    if ! sudo dpkg -i ../$pkg*.deb; then
        echo "Error: Failed to install the built package for $pkg. Skipping..."
        cd $SRC_DIR
        rm -rf $pkg-*/
        SKIPPED=$((SKIPPED + 1))
        continue
    fi
    
    echo "$pkg processed successfully."
    RECOMPILED=$((RECOMPILED + 1))
    
    # Clean up and go back to the source directory
    cd $SRC_DIR
    rm -rf $pkg-*/
done

# Clean up
sudo apt-get clean

echo "Recompilation and installation process completed."
echo "Total packages processed: $PROCESSED"
echo "Total packages skipped due to errors: $SKIPPED"
echo "Total packages recompiled with CPU-specific and advanced optimizations: $RECOMPILED"