==== LFS 13.0 ====
=== Scripts ===
/etc/profile.d/build-default-flags.sh
<codeprism lang=bash>
# Graphite (LTO -fgraphite-identity -floop-nest-optimize -floop-interchange)
COMMON_FLAGS="-march=native -O3 -pipe -flto=auto -ffat-lto-objects -fgraphite-identity -floop-nest-optimize -floop-interchange"
export LDFLAGS="-flto=auto -Wl,-O1 -Wl,--as-needed"
source /etc/flags-store/export.list
alias clear-flags='unset CFLAGS CXXFLAGS FCFLAGS FFLAGS RUSTFLAGS LDFLAGS'
</codeprism>
/etc/flags-store/toggle-flags.sh
<codeprism lang=bash>
#!/usr/bin/env bash

FLAG_DIR="/etc/flags-store"

GREEN='\033[0;32m'
YELLOW='\033[1;33m'
CYAN='\033[0;36m'
NC='\033[0m'

if [ ! -d "$FLAG_DIR" ]; then
    echo -e "${YELLOW}경고: 플래그 디렉터리($FLAG_DIR)가 존재하지 않습니다.${NC}"
        echo -e "정보: 플래그 디렉터리($FLAG_DIR)를 생성합니다."
        mkdir -pv $FLAG_DIR
        echo -e "${GREEN}정보: 기본 플래그 파일을 생성합니다.${NC}"
        echo -e '#Basic C, CXX  and LD Flags. (native,O3,pipe)\nCOMMON_FLAGS="-march=native -O3 -pipe"\nexport CFLAGS="${COMMON_FLAGS}"\nexport CXXFLAGS="${COMMON_FLAGS}"\nexport FCFLAGS="${COMMON_FLAGS}"\nexport FFLAGS="${COMMON_FLAGS}"\nexport RUSTFLAGS="-C target-cpu=native -C opt-level=3"\n\nexport LDFLAGS="-Wl,-O1 -Wl,--as-needed"' | tee ${FLAG_DIR}/safe.flags
        echo -e "${NC}"
fi

mapfile -t FLAG_FILES < <(ls "$FLAG_DIR"/*.flags 2>/dev/null)

echo -e "${CYAN}==============================================${NC}"
echo -e " 현재 적용된 CFLAGS: ${GREEN}${CFLAGS:-"None"}${NC}"
echo -e "----------------------------------------------"
echo -e " 사용 가능한 플래그 목록:"

for i in "${!FLAG_FILES[@]}"; do
    filename=$(basename "${FLAG_FILES[$i]}")
    description=$(head -n 1 "${FLAG_FILES[$i]}" | sed 's/^#//g' | xargs)
    echo -e "  $((i+1))) ${YELLOW}${filename%-6}${NC} \t- ${CYAN}${description}${NC}"
done

echo -e "  c) ${GREEN}Clear-Flags${NC} (Unset all)"
echo -e "  q) Quit"
echo -e "----------------------------------------------"

read -p " 플래그 번호를 선택하십시오: " choice

if [[ "$choice" == "q" ]]; then
    echo "취소되었습니다."
elif [[ "$choice" == "c" ]]; then
    unset CFLAGS CXXFLAGS FCFLAGS FFLAGS RUSTFLAGS LDFLAGS MAKEFLAGS COMMON_FLAGS
    echo -e "${GREEN}>>> 모든 플래그가 초기화되었습니다.${NC}"
elif [[ "$choice" =~ ^[0-9]+$ ]] && [ "$choice" -ge 1 ] && [ "$choice" -le "${#FLAG_FILES[@]}" ]; then
    selected_file="${FLAG_FILES[$((choice-1))]}"
    source "$selected_file"
    echo -e "${GREEN}>>> [$(basename "$selected_file")] 적용 완료!${NC}"
else
    echo -e "${RED}잘못된 선택입니다.${NC}"
fi

unset FLAG_DIR FLAG_FILES

export MAKEFLAGS="-j$(nproc)"
</codeprism>
/etc/flags-store/export.list
<codeprism lang=bash>
export CFLAGS="${COMMON_FLAGS}"
export CXXFLAGS="${COMMON_FLAGS}"
export FCFLAGS="${COMMON_FLAGS}"
export FFLAGS="${COMMON_FLAGS}"
export RUSTFLAGS="-C target-cpu=native -C opt-level=3"
</codeprism>
/etc/flags-store/01-safe.flag
<codeprism lang=bash>
#Basic (-native -O3 - pipe)
COMMON_FLAGS="-march=native -O3 -pipe"
export LDFLAGS="-Wl,-O1 -Wl,--as-needed"
source /etc/flags-store/export.list
</codeprism>
/etc/flag-store/02-lto.flags
<codeprism lang=bash>
#LTO (Basic + -flto=auto -ffat-lto-objects)
COMMON_FLAGS="-march=native -O3 -pipe -flto=auto -ffat-lto-objects"
export LDFLAGS="-flto=auto -Wl,-O1 -Wl,--as-needed"
source /etc/flags-store/export.list
</codeprism>
/etc/flags-store/03-graphite.flags
<codeprism lang=bash>
ln -sv /etc/profile.d/build-default-flags.sh /flags-store/03-graphite.flags
</codeprism>
/etc/flags-store/04-kernel.flags
<codeprism lang=bash>
#Kernel (-native -O2 - pipe)
COMMON_FLAGS="-march=native -O2 -pipe"
source /etc/flags-store/export.list
</codeprism>
/etc/flags-store/99-debug.flags
<codeprism lang=bash>
# DEBUG (Graphite -fopt-info)
COMMON_FLAGS="-march=native -O3 -pipe -flto=auto -ffat-lto-objects -fgraphite-identity -floop-nest-optimize -floop-interchange -fopt-info"
export LDFLAGS="-flto=auto -Wl,-O1 -Wl,--as-needed"
source /etc/flags-store/export.list
</codeprism>

==== Optimize Failed Package ====
  * Glibc: LTO-x (safe: -march=native -O3 -pipe)
  * TCL: LTO-x (safe: -march=native -O3 -pipe)
  * libtool: LTO-x (safe: -march=native -O3 -pipe)
  * OpenSSL: LTO-x (safe: -march=native -O3 -pipe)
  * Linux-6.18.10: LTO-x, O3-x (safe: -march=native -O2 -pipe)
  * frei0r-2.5.1: LTO-x -march=native-x (safe: -O3 -pipe)
  * Node.js-22.22.0: LTO-x (safe: -march=native -O3 -pipe) (--shared-sqlite: x)
  * SpiderMonkey from firefox-140.8.0: LTO-x (safe: -march=native -O2 -pipe)
  * libaio-0.3.113: LTO=x (safe: -march=native -O3 -pipe)
  * FFmpeg-8.0.1: LTO=x (safe: -march=native -O3 -pipe)
  * ristretto-0.13.4: Graphite-X (safe: -march=native -O3 -pipe -flto=auto -ffat-lto-objects)

==== 책과 다른 방식의 컴파일이 필요한 패키지 ====
  
==== Chapter 8.30. GCC-15.2.0 ====
<codeprism lang=bash cmdout=2-12>
 gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/15.2.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../configure --prefix=/usr LD=ld \
--enable-languages=c,c++ --enable-default-pie --enable-default-ssp \
--enable-host-pie --disable-multilib --disable-bootstrap \
--disable-fixincludes --with-system-zlib --with-isl --enable-lto
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 15.2.0 (GCC)</codeprism>
==== BLFS 13.0 ====
  * [[BLFS Build Order]]
=== Chapter 11. General Utilities ===
pinentry-1.3.2
<codeprism lang=bash>
sed -i "/FLTK 1/s/3/4/" configure   &&
## sed -i '14456 s/1.3/1.4/' configure
sed -i '14466 's/1.3/1.4/' configure
</codeprism>