fix bionic-host build

[Grimler91]

Replaces #20958

[TomJo2000]

#### make completed successfully (14:31 (mm:ss)) ####

INFO: READELF=llvm-readelf ... /home/runner/.termux-build/_cache/android-r27-api-24-v0/bin/llvm-readelf
INFO: Generating undefined symbols regex to /tmp/tmp.5AzZrY8TDF
INFO: Done ... 0s
INFO: Total symbols 2365
INFO: Generating OpenMP symbols regex to /tmp/tmp.PSMRtng4UL
INFO: Done ... 0s
INFO: Total OpenMP symbols 2505
INFO: Identifying files with nproc=4
INFO: Done ... 0s
INFO: Found 31 / 34 files
INFO: Running symbol checks on 31 files with nproc=4
INFO: Done ... 11s
INFO: Found files with undefined symbols
INFO: Showing result
ERROR: ./opt/bionic-host/lib/ld-android.so contains undefined symbols:
     1: 00000000     0 NOTYPE  GLOBAL DEFAULT   UND __cxa_finalize
     2: 00000000     0 NOTYPE  GLOBAL DEFAULT   UND __cxa_atexit
     3: 00000000     0 NOTYPE  GLOBAL DEFAULT   UND __register_atfork
ERROR: ./opt/bionic-host/lib/libdl.so contains undefined symbols:
     1: 00000000     0 NOTYPE  GLOBAL DEFAULT   UND __cxa_finalize
     2: 00000000     0 NOTYPE  GLOBAL DEFAULT   UND __cxa_atexit
     3: 00000000     0 NOTYPE  GLOBAL DEFAULT   UND __register_atfork
    24: 00000000     0 NOTYPE  GLOBAL DEFAULT   UND abort
    25: 00000000     0 NOTYPE  GLOBAL DEFAULT   UND memcpy
ERROR: ./opt/bionic-host/lib64/ld-android.so contains undefined symbols:
     1: 0000000000000000     0 NOTYPE  GLOBAL DEFAULT   UND __cxa_finalize
     2: 0000000000000000     0 NOTYPE  GLOBAL DEFAULT   UND __register_atfork
     3: 0000000000000000     0 NOTYPE  GLOBAL DEFAULT   UND __cxa_atexit
ERROR: ./opt/bionic-host/lib64/libdl.so contains undefined symbols:
     1: 0000000000000000     0 NOTYPE  GLOBAL DEFAULT   UND __cxa_finalize
     2: 0000000000000000     0 NOTYPE  GLOBAL DEFAULT   UND __register_atfork
     3: 0000000000000000     0 NOTYPE  GLOBAL DEFAULT   UND __cxa_atexit
INFO: Done ... 7s
INFO: Found 4 files with undefined symbols after exclusion
ERROR: Refer above
Error: Process completed with exit code 1.

Looks like some library isn't getting linked.

[twaik]

Maybe we should just omit the undefined symbols checking? Building is controlled by AOSP building system, I do not think we should make sure everything is fine.
Also there is another way to obtain ubuntu packages directly from repos, without guessing package names and their urls.

termux-packages/x11-packages/audacity/build.sh

Lines 44 to 95 in 091d05f

	# Function to obtain the .deb URL
	obtain_deb_url() {
	local url="https://packages.ubuntu.com/noble/amd64/$1/download"
	local retries=5
	local wait=5
	local attempt
	local deb_url
	for ((attempt=1; attempt<=retries; attempt++)); do
	local PAGE="$(curl -s "$url")"
	>&2 echo page
	>&2 echo "$PAGE"
	if deb_url=$(echo "$PAGE" | grep -Eo 'http://.*\.deb' | head -n 1); then
	if [[ -n "$deb_url" ]]; then
	echo "$deb_url"
	return 0
	else
	# deb_url is empty or server answered with `internal server error`, retry
	>&2 echo "Attempt $attempt: Received empty URL or server answered with `Internal server error` page. Retrying in $wait seconds..."
	fi
	else
	# The command failed, retry
	>&2 echo "Attempt $attempt: Command failed. Retrying in $wait seconds..."
	fi
	sleep "$wait"
	done
	# Failed after retries, output error to stderr and exit with code 1
	>&2 echo "Failed to obtain URL after $retries attempts."
	exit 1
	}
	termux_step_host_build() {
	termux_setup_cmake
	termux_setup_ninja
	( # Running build in a subshell to avoid variable mess
	# We must build the `image-compiler` for building.
	# See https://github.com/audacity/audacity/blob/Audacity-3.6.4/BUILDING.md#selecting-target-architecture-on-macos
	_PREFIX="$TERMUX_PKG_HOSTBUILD_DIR/prefix"
	# Building both gtk2.0 and alsa only for building host-side tool seems to be excessive.
	# Let's download them from ubuntu repos.
	# To avoid messing with `apt update` and `apt download` we will get download links directly from ubuntu servers.
	mkdir "$_PREFIX"
	for i in libgtk2.0-0t64 libgtk2.0-dev libasound2-dev; do
	wget "$(obtain_deb_url $i)" -O "$TERMUX_PKG_HOSTBUILD_DIR/tmp.deb"
	dpkg-deb -R "$TERMUX_PKG_HOSTBUILD_DIR/tmp.deb" "$TERMUX_PKG_HOSTBUILD_DIR/tmp"
	cp -rf "$TERMUX_PKG_HOSTBUILD_DIR"/tmp/* "$_PREFIX"
	rm -rf "$TERMUX_PKG_HOSTBUILD_DIR/tmp.deb" "$TERMUX_PKG_HOSTBUILD_DIR/tmp"
	unset _URL
	done