From 82093d1889ee6343b29f99a03f6d0e384d6b818c Mon Sep 17 00:00:00 2001
From: Denis Benato <benato.denis96@gmail.com>
Date: Wed, 22 Jan 2025 22:40:56 +0100
Subject: [PATCH] Add libpcap

---
 build.sh | 109 +++++++++++++++++++++++++++++++++++--------------------
 1 file changed, 69 insertions(+), 40 deletions(-)

diff --git a/build.sh b/build.sh
index 02c10f2..9092627 100755
--- a/build.sh
+++ b/build.sh
@@ -101,19 +101,19 @@ setup_toolchain() {
     export SYSROOT="$LFS"
     #unset LD_LIBRARY_PATH
 
-    echo "[binaries]" > meson_cross.txt
-    echo "c = '$CC'" >> meson_cross.txt
-    echo "cpp = '$CPP'" >> meson_cross.txt
-    echo "ar = '$AR'" >> meson_cross.txt
-    #echo "windres = 'x86_64-w64-mingw32-windres'" >> meson_cross.txt
-    echo "strip = '$STRIP'" >> meson_cross.txt
-    echo "exe_wrapper = 'wine64'" >> meson_cross.txt
-    echo "" >> meson_cross.txt
-    echo "[host_machine]" >> meson_cross.txt
-    echo "system = 'linux'" >> meson_cross.txt
-    echo "cpu_family = '$CPU_FAMILY'" >> meson_cross.txt
-    echo "cpu = '$CPU'" >> meson_cross.txt
-    echo "endian = '$TARGET_ENDIANNESS'" >> meson_cross.txt
+    echo "[binaries]" > "$CROSS_TOOLS_DIR/meson_cross.txt"
+    echo "c = '$CC'" >> "$CROSS_TOOLS_DIR/meson_cross.txt"
+    echo "cpp = '$CPP'" >> "$CROSS_TOOLS_DIR/meson_cross.txt"
+    echo "ar = '$AR'" >> "$CROSS_TOOLS_DIR/meson_cross.txt"
+    #echo "windres = 'x86_64-w64-mingw32-windres'" >> "$CROSS_TOOLS_DIR/meson_cross.txt"
+    echo "strip = '$STRIP'" >> "$CROSS_TOOLS_DIR/meson_cross.txt"
+    echo "exe_wrapper = 'wine64'" >> "$CROSS_TOOLS_DIR/meson_cross.txt"
+    echo "" >> "$CROSS_TOOLS_DIR/meson_cross.txt"
+    echo "[host_machine]" >> "$CROSS_TOOLS_DIR/meson_cross.txt"
+    echo "system = 'linux'" >> "$CROSS_TOOLS_DIR/meson_cross.txt"
+    echo "cpu_family = '$CPU_FAMILY'" >> "$CROSS_TOOLS_DIR/meson_cross.txt"
+    echo "cpu = '$CPU'" >> "$CROSS_TOOLS_DIR/meson_cross.txt"
+    echo "endian = '$TARGET_ENDIANNESS'" >> "$CROSS_TOOLS_DIR/meson_cross.txt"
 }
 
 host_toolchain() {
@@ -1530,6 +1530,61 @@ if [ ! -f "$STEPS_DIR/audit-userspace" ]; then
     touch "$STEPS_DIR/audit-userspace"
 fi
 
+# build libcap2
+if [ ! -f "$STEPS_DIR/libcap2" ]; then
+    if [ ! -d "$TMP_BUILD_DIR/libcap2" ]; then
+        tar -xzf "$BASE_DIR/sources/libcap-2.73.tar.gz"
+        mv "libcap-2.73" "$TMP_BUILD_DIR/libcap2"
+    fi
+    cd "$TMP_BUILD_DIR/libcap2"
+
+    mkdir -vp build
+    cd        build
+
+    # NOTE: with CGO_ENABLED we need all relevant make options in build(), check() and package() otherwise the package is not reproducible
+    _common_make_options=(
+        CGO_CPPFLAGS="$CPPFLAGS"
+        CGO_CFLAGS="$CFLAGS"
+        CGO_CXXFLAGS="$CXXFLAGS"
+        CGO_LDFLAGS="$LDFLAGS"
+        CGO_REQUIRED="1"
+        GOFLAGS="-buildmode=pie -mod=readonly -modcacherw"
+        GO_BUILD_FLAGS="-ldflags '-compressdwarf=false -linkmode=external'"
+    )
+
+
+    make_options=(
+        "${_common_make_options[@]}"
+        DYNAMIC=yes
+        KERNEL_HEADERS=/usr/include
+        lib=lib
+        prefix=/usr
+        sbindir=bin
+        -C ..
+    )
+
+    make "${make_options[@]}"
+
+    export GOPATH="$srcdir"
+
+    make_options=(
+        "${_common_make_options[@]}"
+        DESTDIR="$LFS"
+        RAISE_SETFCAP=no
+        lib=lib
+        prefix=/usr
+        sbindir=bin
+        install
+        -C ..
+    )
+
+    make "${make_options[@]}"
+
+    cd "$BASE_DIR"
+
+    touch "$STEPS_DIR/libcap2"
+fi
+
 for f in "$LFS"/usr/bin/*; do
     if "$READELF" -h $f | grep -Fq "Executable"; then
         echo "Stripping $f..."
@@ -1580,33 +1635,7 @@ fi
 
 #"$TARGET_MACHINE_TRIPLET-strip" --strip-unneeded $LFS/bin/*
 
-# build libcap2
-#if [ ! -f "$STEPS_DIR/libcap2" ]; then
-#    if [ ! -d "$TMP_BUILD_DIR/libcap2" ]; then
-#        tar -xzf "$BASE_DIR/sources/libcap-2.73.tar.gz"
-#        mv "libcap2" "$TMP_BUILD_DIR/libcap2"
-#    fi
-#    cd "$TMP_BUILD_DIR/libcap2"
-#
-#    mkdir -vp build
-#    cd        build
-#
-#    echo "rootsbindir=/usr/sbin" > configparms
-#
-#    "../configure"                        \
-#        --prefix=/usr                     \
-#        --disable-static                  \
-#        --target=$TARGET_MACHINE_TRIPLET                 \
-#        --host=$(build-aux/config.guess)  \
-#        --build=$(build-aux/config.guess) \
-#
-#    make -j 32
-#    make DESTDIR=$LFS install
-#
-#    cd "$BASE_DIR"
-#
-#    touch "$STEPS_DIR/libcap2"
-#fi
+
 
 # Remove man pages: totally useless
 rm -rf "$LFS"/usr/share/man